Patent Publication Number: US-7223216-B1

Title: Exerciser with multiple bungee cord resistance and enhanced bench movements

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
   This application claims the benefit of U.S. patent application Ser. No. 09/738,317, entitled “EXERCISER WITH MULTIPLE BUNGEE CORD RESISTANCE AND ENHANCED BENCH MOVEMENTS,” McBride, and filed Dec. 18, 2000, now U.S. Pat. No. 6,595,905, the contents of which are incorporated herein by reference in their entirety. 

   FIELD OF THE INVENTION 
   This invention relates generally to exercisers and more specifically to exercisers with multiple resistance and bench movements that enable a user to perform various different exercises. 
   BACKGROUND AND SUMMARY OF THE INVENTION 
   Recent years have seen an increasing awareness of the benefits of physical exercise and widespread use of exercisers. The therapeutic value of progressive resistance exercises has long been recognized. Exercising muscles against progressively increasing resistance not only results in added strength and endurance in the muscles, but also in a more efficient functioning of the cardiovascular and respiratory systems. 
   Various types of exercisers have been suggested which use elastomeric members such as resistance bands to provide non-gravity resistance to the performance of the exercises. 
   One such exerciser is described in U.S. Pat. No. 5,674,167 issued to Piaget et al. The exerciser taught by Piaget et al. includes a first plurality of resistance cords for providing resistance to pivotal movement of first and second arm members and a second plurality of resistance cords for providing resistance to a leg member. Each plurality of resistance cords are releasably secured to a fixed anchor such that the first plurality of resistance cords provides resistance to the arm members independently from the resistance provided by the second plurality of resistance cords to the leg member. A user may exercise his/her arms and legs without complex maneuvering or adjustments to the exercise machine as taught by Piaget et al. However, varying the resistance by using elastomeric resistance as taught by Piaget et al. involves adding or subtracting individual resistance cords to the apparatus, which can be both burdensome and time consuming. Further, since the resistance cords are typically separate units, they can be lost or misplaced, increasing costs for replacement, and frequently are strewn about the apparatus in a manner to create substantial tripping hazards. 
   Another such exerciser is described in U.S. Pat. No. 5,906,566 issued to Whitcomb. The exerciser taught by Whitcomb includes a single plurality of resistance elements for either providing resistance to handle grips or to a leg unit which are connected to opposite ends of the resistance elements. Whitcomb provides an exercise machine having a single plurality of resistance elements, which are not removed from the exercise machine during normal usage, thus eliminating the risks and cost described above with respect to loose resistance elements. Even though the exercise machine is relatively versatile, it includes numerous pivotally movable components, which can be relatively bulky and can require many steps to maneuver the exercise machine into various positions for effecting the different modes of exercise. These extra steps require extra time to move the exercise machine between different positions and can significantly lengthen the workout. Thus, the ability to maneuver the exerciser into various positions for effecting the different modes of exercise quickly is greatly desirable to help reduce unnecessary time between exercises. 
   While the cited prior art exercisers are effective for their intended purpose, there is always a continuing need for new and improved exercisers which are cost-effective, convenient for transportation and storage, versatile, capable of providing variable resistance and relatively easy to maneuver between various positions for effecting different modes of exercise. 
   To achieve this need, an exerciser comprising a frame assembly including a lower frame portion constructed and arranged to be stably supported in an operative position on a horizontal surface is provided. The frame assembly also includes rigid upright frame structure defines laterally spaced left and right free end portions. A user support assembly is operatively connected with the lower frame portion constructed and arranged to support a user thereon. Left and right moving assemblies are disposed in normal inoperative positions with respect to the user support assembly constructed and arranged to be manually engaged and individually manually moved away from the normal inoperative position thereof into a desired extended position by a user supported on the user support assembly. 
   The left and right moving assemblies comprise left and right upper pulley members rotatably mounted on the left and right upper free end portions of the rigid upright frame structure respectively and left and right lower pulley members rotatably mounted on the frame assembly at fixed positions below the upper pulley members respectively. The left and right moving assemblies also comprise left and right flexible elongated structures trained around the left and right upper and lower pulley members respectively and left and right user hand grip units connected with left and right end portions of the left and right flexible elongated structures extending in positions to enable a user supported on the user support assembly to move the left and right user hand grip units away from inoperative positions thereof into desired extended positions. 
   The left and right flexible elongated structures include left and right bungee cords having fixed ends and movable ends provided with stop structure thereon for engaging cooperating stop structure associated with left and right pulley members respectively so as to determine inoperative positions thereof and enable resilient movements therefrom to desired extended positions and to resiliently return the left and right user hand grip units to the inoperative positions thereof when no longer moved by the user. 
   Connecting structure is provided on the frame assembly which is constructed and arranged to enable the fixed end of the left and right bungee cords to be fixed in selected fixed positions on the frame assembly which provide selected different resilient bias of the bungee cords when in the inoperative and extended positions thereof. 
   Generally, exercisers of this type have been known to provide a user support assembly or bench for supporting users while they effect various different modes of exercise. Numerous exercisers that incorporate benches for providing support to users have heretofore been known in the art. 
   Some exercisers incorporate benches such as a split bench having a seat back and a seat member hingeably connected so that the bench can be adjusted for use in connection with both a flat bench position and a sitting position. Snyderman et al U.S. Pat. No. 5,069,447 represents an example of one such exerciser. 
   Other exercisers, especially those configured to provide multiple exercises or a bench which may be maneuvered between various positions may be cumbersome to transport and may take up a large area. One such exerciser, such as Rockwell U.S. Pat. No. 4,634,127, includes a bench assembly which may be moved into a storage position. The exercise machines taught by Piaget et al. and Whitcomb may also be moved into a storage position, but both exercise machines require a relatively complex series of movements and adjustments before being moved into the storage positions thereof. 
   Consequently, there exists a need in the art to provide an exerciser that is cost-effective, convenient for transportation and storage, versatile, and relatively easy to maneuver between various positions for effecting different modes of exercise. 
   Another aspect of the present invention is to provide an exerciser comprising a frame assembly that includes a lower frame portion constructed and arranged to be stablely supported in an operative position on a horizontal surface and left and right rigid upright support members fixed at lower end portions thereof on the lower frame portion. The left and right rigid upright support members extend upwardly from the lower frame portion when in the operative position thereof. The left and right rigid upright support members have integral laterally spaced left and right upper free ends disposed above the lower frame portion in outwardly diverging relation with respect to one another. A user support assembly is operatively connected with the lower frame portion and is constructed and arranged to support a user thereon. Left and right moving assemblies are disposed in normal inoperative positions with respect to the user support assembly and are constructed and arranged to be manually engaged and individually manually moved away from the normal inoperative position thereof into a desired extended position by a user supported on the user support assembly. 
   The left and right moving assemblies comprise left and right upper pulley members rotatably mounted on the left and right upper free end portions of the left and right rigid upright support members respectively and left and right lower pulley members rotatably mounted on the frame assembly at fixed positions below the upper pulley members respectively. 
   Left and right flexible elongated structures are trained around the left and right upper and lower pulley members respectively. Left and right user hand grip units are connected with left and right end portions of the left and right flexible elongated structures extending in positions to enable a user supported on the user support assembly to move the left and right user hand grip units away from inoperative positions thereof into desired extended positions. 
   The left and right flexible elongated structures include left and right bungee cords having fixed ends fixed directly to the frame structure and movable ends provided with stop structure thereon for engaging cooperating stop structure associated with left and right pulley members respectively so as to determine inoperative positions thereof and enable resilient movements therefrom to desired extended positions and to resiliently return the left and right user hand grip units to the inoperative positions thereof when no longer moved by the user. 
   Another aspect of the present invention is achieved by an exerciser that comprises a frame assembly including a lower frame portion constructed and arranged to be stablely supported in an operative position on a horizontal surface and left and right rigid upright support members fixed at lower end portions thereof on the lower frame portion. The left and right rigid upright support members extend upwardly from the lower frame portion when in the operative position thereof. The left and right rigid upright support members have integral laterally spaced left and right upper free ends disposed above the lower frame portion in outwardly diverging relation with respect to one another. 
   A user support assembly is operatively connected with the frame assembly and is constructed and arranged to support a user thereon. The user support assembly includes a user seat member, a user seat back member and an elongated support member having one end connected to the upright frame assembly and extending in an operative position generally horizontally outwardly therefrom. The user support assembly also includes an outer leg structure that is constructed and arranged to engage and be supported on the horizontal surface in spaced relation to the frame extending in an operative position in supporting relation with respect to the elongated support member to maintain the elongated support member in the generally horizontally outwardly extending relation from the lower frame portion. Seat mounting structure constructed and arranged to mount the user seat member for movement horizontally with respect to the elongated support member when in the operative position thereof between an outer position and a inner position and spaced inwardly of and at generally the same level as the outer position. Seat back mounting structure operatively associated with the seat back member that is constructed and arranged to enable the seat back member to be selectively retained in a bench position extending in generally horizontally aligned relation to the user seat member in an outer position thereof and an upright position extending generally inwardly in inclined relation to the user seat member in an inner position thereof. 
   The upright frame assembly includes a lower frame portion constructed and arranged to be stablely supported on a horizontal surface and an upstanding portion extending upwardly from the lower frame portion, and a seat support portion extending upwardly from the lower frame portion in horizontally spaced relation to the upstanding portion. The elongated support member is pivotally mounted on the seat support portion so as to be moved between the operative position thereof and an upright storage position wherein the elongated support member, the outer leg structure and the seat and seat back members are alongside the upstanding portion. 
   Left and right moving assemblies are disposed in normal inoperative positions with respect to the user support assembly and are constructed and arranged to be manually engaged and individually manually moved away from the normal inoperative position thereof into a desired extended position by a user supported on the user support assembly. The left and right moving assemblies have left and right portions operatively associated with cooperating structure on the left and right upper free ends. 
   Other objects, aspects, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims. 

   
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING 
     The accompanying drawings, which are incorporated in and constitute a part of the specification, of embodiments of the invention, together with the general description given above and the detailed description of the embodiments given below, serve to explain the principles of the invention wherein: 
       FIG. 1  is a perspective view of an exerciser embodying the principles of the present invention shown in an inline bench position; 
       FIG. 2  is a side view of the exerciser of  FIG. 1  showing the leg-engaging unit in a normal inoperative position thereof and the user support assembly in the inline bench or outer position thereof; 
       FIG. 3  is a side view of the exerciser of  FIG. 1  showing the leg-engaging unit connected to the exerciser in a normal inoperative position thereof and the user support assembly in the upright or inner position thereof; 
       FIG. 4  is a side view of a hand grip unit of  FIG. 1 ; 
       FIG. 5  is a side view of a bungee cord of  FIG. 1 ; 
       FIG. 6  is a bottom plan view of the user seat back of  FIG. 1 ; 
       FIG. 7  is a side view of the exerciser of  FIG. 2  but showing the arm lift unit being operated to cause the leg-engaging unit to be extended away from the user support assembly while a user is effecting an arm curl exercise; 
       FIG. 8  is a side view of the exerciser of  FIG. 2  but showing the arm lift unit removed from the exerciser and the leg-engaging unit being extended away from the user support assembly while a user is effecting a leg extension exercise; 
       FIG. 9  is a side view of the exerciser of  FIG. 2  but showing the hand grip units being extended away from the lower pulley members while a user is effecting a seated rowing exercise; 
       FIG. 10  is a side view of the exerciser of  FIG. 2  but showing the hand grip units being extended away from the lower pulley members while a user is effecting an alternative seated rowing exercise; 
       FIG. 11  is a side view of the exerciser of  FIG. 2  but showing the hand grip units being extended away from the lower pulley members while a user is effecting a military press exercise; 
       FIG. 12  is a side view of the exerciser of  FIG. 4  showing the hand grip bar assembly connected to the exerciser and being extended toward the user support assembly while a user is effecting a lat pull down exercise; 
       FIG. 13  is a side view of the exerciser of  FIG. 3  but showing the hand grip units being extended away from the lower pulley members while a user is effecting a bench press or chest fly exercise; 
       FIG. 14  is a side view of the exerciser of  FIG. 1  showing the user seat assembly in the upright storage position thereof; 
       FIG. 15  is a perspective view of another exerciser embodying the principles of the present invention; 
       FIG. 16  is a side view of the exerciser of  FIG. 15  showing a leg-engaging unit in a normal inoperative position thereof and the user support assembly in the inline bench or outer position thereof; 
       FIG. 17  is a side view of the exerciser of  FIG. 15  showing the leg-engaging unit connected to the exerciser in a normal inoperative position thereof and the user support assembly in the upright or inner position thereof; 
       FIG. 18  is a side view of the exerciser of  FIG. 15  showing a upright pull down unit connected to the exerciser in a normal inoperative position thereof; 
       FIG. 19  is a rear view of the exerciser of  FIG. 15  with the upright pull down unit connected to the exerciser in a normal inoperative position thereof; 
       FIG. 20  is a side view of the exerciser of  FIG. 15  showing a pull down bar connected to the exerciser in a normal inoperative position thereof; 
       FIG. 21  is a perspective view of the pull down bar shown in  FIG. 20 ; 
       FIG. 22  is a side view of the exerciser of  FIG. 15  but showing the leg unit being extended away from the lower pulley members while a user is effecting a leg extension exercise; 
       FIG. 23  is a side view of the exerciser of  FIG. 15  but showing the pull down bar being extended away from the upper pulley members while a user is effecting an arm exercise or a lat pull down exercise; 
       FIG. 24  is a side view of the exerciser of  FIG. 15  but showing the upright pull down unit being extended away from the upper pulley members while a user is effecting an arm exercise or a lat pull down exercise; 
       FIG. 25  is a side view of the exerciser of  FIG. 15  but showing the hand grip units being extended away from the lower pulley members while a user is effecting an arm curl exercise; 
       FIG. 26  is a side view of the exerciser of  FIG. 15  but showing the hand grip units being extended away from the lower pulley members while a user is effecting a military press exercise; 
       FIG. 27  is a side view of the exerciser of  FIG. 15  but showing the hand grip units being extended away from the lower pulley members while a user is effecting a bench press or chest fly exercise; 
       FIG. 28  is a rear view of the exerciser of  FIG. 15  with an the for adjusting resistance provided to the exercising assemblies; 
       FIG. 29  is a rear view of another exerciser embodying the principles of the present invention capable of adjusting resistance provided to the exercising assemblies; 
       FIG. 30  is a rear view of the exerciser of  FIG. 29 , but having further adjustment capabilities for adjusting resistance provided to the exercising assemblies; 
       FIG. 31  is a side view of the exerciser of  FIG. 15  showing the user seat assembly in an upright storage position thereof; 
       FIG. 32  is an enlarged view of a pivot mechanism of the exerciser of  FIG. 15  when the user seat assembly is in the inline bench position thereof; and 
       FIG. 33  is an enlarged view of a pivot mechanism of the exerciser of  FIG. 15  when the user seat assembly is in the upright storage position thereof. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring now more particularly to the drawings,  FIGS. 1–3  illustrate an exerciser, generally indicated at  10 , embodying the principles of the present invention. The exerciser  10  comprises a frame assembly, generally indicated at  12 , having bungee cords  63  mounted thereto to provide resilient resistance to first and second moving assemblies, generally indicated at  32 ,  34 , respectively, a leg-engaging unit, generally indicated at  144 , and a hand grip bar assembly, generally indicated at  160 . The exerciser  10  further comprises a user support assembly, generally indicated at  22 , movable between an inner and outer position thereof by seat back mounting structure. 
   The frame assembly  12  includes a lower frame portion, generally indicated at  14 , constructed and arranged to be stablely supported in an operative position on a horizontal surface  16  and the user support assembly  22  is operatively connected with the lower frame portion  14  to support a user thereon. 
   First and second rigid upright support members  18 ,  20  are fixed at lower end portions  28 ,  30  thereof on the lower frame portion  14  and extend upwardly from the lower frame portion  14  when in the operative position thereof. The first and second rigid upright support members  18 , 20  have first and second rigid upper free end portions  24 ,  26 , respectively. The upper free end portions  24 ,  26  are configured to curve or extend upwardly from the lower portions  28 ,  30  thereof in outwardly diverging relation with respect to one another. 
   A pair of separate moving assemblies  32 ,  34  is disposed in normal inoperative positions with respect to the user support assembly  22 . Each moving assembly  32 ,  34  is constructed and arranged to be manually engaged and individually manually moved away from the normal inoperative position thereof into a desired extended position by a user supported on the user support assembly  22 . 
   The first and second moving assemblies  32 ,  34  include first and second upper pulley members  36 ,  38  rotatably mounted on the upper free end portions  24 ,  26  of the first and second rigid upright support members  18 ,  20 , respectively. First and second lower pulley members  40 ,  42  are rotatably mounted on the frame assembly  12  at fixed positions below the upper pulley members  36 ,  38 , respectively. First and second flexible elongated structures, generally indicated at  48 ,  50 , are trained around the lower pulley members  40 ,  42  and extend upwardly over the first and second upper pulley members  36 ,  38  respectively. Terminal end portions  52 ,  54  of the first and second flexible elongated structures  48 ,  50  extend downwardly from the upper pulley members  36 ,  38  toward the lower frame portion  14 . 
   Movement preventing structures, generally indicated at  44 ,  46 , on the lower frame portion  14  are operatively associated with the terminal end portions  52 ,  54  of the first and second flexible elongated structures  48 ,  50 , respectively, (only the movement preventing structure  44  and its operatively associated terminal end portions  52  are seen in  FIGS. 1–3 ). The movement preventing structures  44 ,  46  are constructed and arranged to prevent upward movements of the terminal end portions  52 ,  54 . 
   First and second user hand grip units  56 ,  58  are connected with first and second end portions  60 ,  62  of the first and second flexible elongated structures  48 ,  50 , respectively. The end portions  60 ,  62  are at opposite ends of the first and second flexible elongated structures  48 ,  50  as the terminal end portions  52 ,  54 . The end portions  60 ,  62  extend outwardly from the lower pulley members  40 ,  42  in positions to enable a user supported on the user support assembly  22  to move the user hand grip units  56 ,  58  away from inoperative positions thereof into desired extended positions. 
   The first and second flexible elongated structures  48 ,  50  include bungee cords  63 , which constitute resilient resistance structures, at the terminal end portions  52 ,  54  thereof. The bungee cords  63  resiliently resist movement of the user hand grip units  56 ,  58  and the end portions  60 ,  62  of the flexible elongated structures  48 ,  50  away from the inoperative positions thereof into desired extended positions. The bungee cords  63  are further configured to resiliently return the user hand grip units  56 ,  58  to the inoperative positions thereof when no longer moved by the user. 
   The lower frame assembly  14  may be formed from a rigid material, such as steel, and includes a substantially symmetrical U-shaped support base  64 . The U-shaped support base  64  has a generally straight central section  66  and a pair of spaced legs  68  which extend from the central section  66  to provide support to the lower frame portion  14  of the exerciser  10 . A cross member  70  extends between the support legs  68  in parallel spaced relation to the central section  66  and a support bar  72  extends from the mid-portion of the central section  66  toward the cross member  70  in order to provide additional support to the lower frame portion  14 . A cover plate  74 , which may be made from steel, plastic, wood, such as plywood, or any other type of material, is positioned in abutting relation to the cross member  70  so as to form a common plane therewith which substantially covers the area extending between the spaced legs  68 . As best shown in  FIG. 1 , a mounting support member  76  vertically extends from the central section  66  of the support base  64 . The mounting support member  76  has a hollow transverse cross section, preferably substantially rectangular in form so as to provide sufficient strength and support to the lower frame assembly  14  of the exerciser  10 . Other exercise components, such as the hand grip bar assembly  160 , can be positioned within the mounting support member  76  to provide added versatility to the exerciser  10 , as will be further described in detail below. 
   A pulley mounting member  80  is mounted to an upper portion  78  of the mounting support member  76 , such as by transversely extending therethrough, so as to form a cross or t-shape therewith. The pulley mounting member  80  is preferably tubular in form and bonded to the mounting support member  76 , for example, by welding, for additional structural rigidity of the lower frame portion  14 . It may be preferable to mount the pulley mounting member  80  forwardly or rearwardly of the mounting support member  76 . 
   A protruding member  81  outwardly and upwardly extends from the pulley mounting member  80  such that during certain exercises described below, the user may position his/her feet thereon, e.g. for resting purposes. The protruding member  81  is generally C-shaped and may be adapted to retain the bungee cords  63  within a confined area of lateral movement in cooperation with the pulley mounting member  80 . 
   In the illustrated embodiment, each rigid upright support member  18 ,  20  is mounted, preferably by fasteners or bonding, such as welding, at respective lower portions  28 ,  30  thereof to the mounting support member  76 . The rigid upright support members  18 ,  20  may be positioned on opposite sides of the mounting support member  76  and slightly above the pulley mounting member  80  such that the lower end portions  28 ,  30  thereof abut the upper portion  78  of the mounting support member  76 . 
   A guide pulley member  87  may be rotatably mounted on a lower portion  88  of the mounting support member  76  to extend outwardly therefrom. The guide pulley member  87  is configured to guide an elongated flexible non-extensible element  158  extending from the hand grip bar assembly  160 , as will be described in greater detail below. 
   A pair of horizontally spaced rollers  82  might be rotatably mounted on the generally straight central section  66  of the lower frame  14  for rotation about a horizontal axis parallel to the central section  66 . The rollers  82  are positioned to facilitate the transport of the exerciser  10  to different locations of use, as will be described in further detail below. 
   The movement preventing structures  44 ,  46  include a series of lower pulley members  84 ,  86 . Each lower pulley member  84 ,  86  is rotatably mounted on the lower portion  88  of the mounting support member  76  by a lower bungee cord stop structure  90 ,  92 , respectively. The lower bungee cord stop structures  90 ,  92  extend across a peripheral portion of the associated lower pulleys  84 ,  86 . 
   The movement preventing structure  46  and the lower bungee cord stop structure  92  are not visible in  FIG. 1 , however, these elements are represented by the movement preventing structure  44  and the lower bungee cord stop structure  90 , respectively, shown in  FIG. 1 . 
   Alternatively, in an embodiment not shown, the first and second elongated structures  48 ,  50  could be fixed at the terminal ends  52 ,  54  thereof to the mounting support member  76  to prevent upward movements of the terminal portions  52 ,  54 . For example, the lower pulleys  84 ,  86  and stop structures  90 ,  92  may be removed from the mounting support member  76  by securing the terminal portions  52 ,  54  of each elongated structure  48 ,  50 , respectively to the mounting support member  76 . 
     FIG. 1  best illustrates the first and second upper pulley members  36 ,  38  having an upper stop structure  94 ,  96 , respectively, which extends across a peripheral portion thereof. The upper stop structures  94 ,  96  rotatably mount the first and second upper pulley members  36 ,  38 , respectively on the upper free end portions  24 ,  26  of the first and second rigid upright support members  18 ,  20 . 
   As illustrated, a pair of lower stop structures  98 ,  100  diagonally extends upwardly and outwardly from the pulley mounting member  80 . The lower stop structures  98 ,  100  rotatably mount the lower pulley members  40 ,  42  in horizontally spaced relation on the pulley mounting member  80  such that the lower stop structures  98 ,  100  extend across a peripheral portion of the lower pulley members  40 ,  42 , respectively. 
   The first and second flexible elongated structures  48 ,  50  further include first and second flexible elongated non-extensible elements  102 ,  104 , such as, for example, nylon cords or other flexible elongated non-extensible elements. The first and second flexible elongated non-extensible elements  102 ,  104  are trained around the lower pulley members  40 ,  42  so as to provide the first and second outwardly extending end portions  60 ,  62 , respectively, of the first and second flexible elongated structures  48 ,  50 . 
   Each non-extensible element  102 ,  104  has a stop element  106 ,  108 , respectively, fixed to the respective end portion  60 ,  62  thereof. Each non-extensible element  102 ,  104  interengages with the respective lower stop structure  98 ,  100  to determine the inoperative position of the first and second moving assemblies  32 ,  34 , respectively. More specifically, the stop elements  106 ,  108  cooperate with the stop structure  98 ,  100  of the respective lower pulley members  40 ,  42  to determine the inoperative positions of the end portions  60 ,  62  of the non-extensible elements  102 ,  104 . 
   The end portions  60 ,  62  of the non-extensible elements  102 ,  104  have respective looped end portions  110 ,  112 . The looped end portions  110 ,  112  are configured to connect with the first and second hand grip units  56 ,  58 , respectively. The stop elements  106 ,  108  are fixed on the non-extensible elements  102 ,  104  in spaced relation to the looped end portions  110 ,  112  thereof. Looped intermediate portions  114 ,  116  are disposed between the associated stop elements  106 ,  108  and the respective looped end portions  110 ,  112  of the non-extensible elements  102 ,  104 . The looped intermediate portions  114 ,  116  are configured to selectively receive the first and second hand grip units  56 ,  58 , respectively, in connecting relation thereto. 
     FIG. 4  illustrates the hand grip unit  56 . The hand grip units  56 ,  58  are the same in construction and the description of the hand grip unit  56  will suffice for both. As best shown in  FIG. 4 , each hand grip unit  56 ,  58  includes a tubular gripping member  57  which is manually engageable by the user during various exercises. A flexible strap  59 , such as nylon or cable, extends through the gripping member  57  to provide free ends  61 . A binding member  65  binds the free ends  61  together and secures the gripping member  57  between the free ends  61 . 
   A latching or securing member  67  is releasably secured to the binding member  65  at one end thereof in a position which facilitates the other end thereof to latch onto the first and second moving assemblies  32 ,  34 , respectively, through the looped portions  110 ,  112 ,  114 , or  116 . When the latching member  67  is latched onto one of the first and second moving assemblies  32 ,  34 , a force exerted on the gripping member  57  by the user moves the respective moving assembly  32 ,  34  on which the gripping member  57  is attached. 
   It may be preferable to store the hand grip units  56 ,  58 , when not in use, by connecting the latching member  67  through both looped portions  110 ,  114  or  112 ,  116  of the non-extensible elements  102 ,  104 , respectively (as illustrated in  FIG. 1 ). 
   Alternatively, the hand grip units  56 ,  58  may include the tubular gripping member  57  and any known flexible or rigid member for securing the latching member  67  thereto. The latching member  67  may be of any known configuration. 
   In the embodiment illustrated in  FIG. 1 , the bungee cords  63  are grouped into a first and second series of resiliently extensible bungee cords  118 ,  120  associated with the first and second moving assemblies  32 ,  34 , respectively. Each series of bungee cords  118 ,  120  may include three bungee cords  63 , each providing a resilient resistance. 
   In the illustrated embodiment, each series of bungee cords  118 ,  120  includes one bungee cord  63  that provides ten pounds of resistance and two bungee cords  63  that each provide twenty pounds of resistance. However, any number of bungee cords  63  may be used in each series  118 ,  120  and the bungee cords  63  can have equal or different resilient resistances so as to provide the desired resilient resistance. 
   Each bungee cord  63  in the first and second series  118 ,  120  has an upper end portion  122  trained around one of the upper pulley members  36 ,  38  and a lower end portion  124  trained about one of the lower pulleys  44 ,  46 , respectively. 
   As best shown in  FIG. 5 , an upper hook connector  126  is fixed on each terminal end  128  of the bungee cords  63  and a lower hook connector  130  is fixed on each terminal end  132  of the bungee cords  63 . The upper hook connectors  126  selectively engage with first and second connecting terminals  134 ,  136 , respectively, so that the first and second connecting terminals  134 ,  136  move substantially in the same direction when the respective moving assemblies  32 ,  34  are moved away from the normal inoperative position thereof. 
   The connecting terminals  134 ,  136  are fixedly disposed on adjacent ends  138 ,  140  of the associated non-extensible element  102 ,  104  to provide resilient resistance thereto. For example, the adjacent ends  138 ,  140  of the non-extensible elements  102 ,  104  may be fixedly disposed on the connecting terminals  134 ,  136  by a hook connector or by tying the ends  138 ,  140  around the respective connecting terminal  134 ,  136 . The connecting terminals  134 ,  136  are disposed in close proximity to the associated upper stop structure  94 ,  96  when the moving assemblies  32 ,  34  are in an inoperative position thereof. The lower hook connector  130  selectively engages a third connecting terminal  142 , which is connected with the leg-engaging unit  144  to provide resilient resistance thereto, as will be described in further detail below. The lower hook connectors  130  may be configured to have an enlarged portion  171 , which might selectively engage the associated lower bungee cord stop structure  90 ,  92  when the moving assemblies  32 ,  34  are in an inoperative position thereof. 
   It is contemplated that the leg-engaging unit  144 , the hand grip bar assembly  160 , or the combination thereof may constitute the third moving assembly. 
   The number of hook connectors  126 ,  130  connected to each connecting terminal  134 ,  136 ,  142  determines the number of bungee cords  63  resisting movement of the corresponding moving assembly  32 ,  34 ,  144  away from the inoperative position thereof. In the illustrated embodiment, each bungee cord  63  provides a resilient resistance and the total resistance provided with respect to any moving assembly  32 ,  34 ,  144  can be varied by virtue of a selection of any one, any two or all three bungee cord hook connectors  126 ,  130 , respectively to be connected to the associated connecting terminal  134 ,  136 ,  142 . 
   It may be preferable for the connecting terminals  134 ,  136 ,  142  to be constructed in the form of rigid annular members, such as metal rings, but the connecting terminals  134 ,  136 ,  142  could be formed into any rigid or flexible configuration capable of being engaged by the hook elements  126 ,  130 . For example, as shown in  FIGS. 1–4  and  7 – 13 , the third connecting member  142  is formed into a hook up bracket having three separate connecting portions thereof, two of which being engaged by the hook elements  126 ,  130  and one of which being engaged by the connector  156 . 
   As illustrated in  FIGS. 2–4 ,  7  and  8 , the leg-engaging unit  144  is disposed in a normal inoperative position with respect to the user support assembly  22 . The leg-engaging unit  144  includes an L-shaped member  145  that is pivotally attached to an outer end portion  146  of the user support assembly  22 . The L-shaped member  145  is engaged to be moved away from the normal inoperative position thereof into a desired extended position by a user supported on the user support assembly  22 , as will be described in greater detail below. 
   The L-shaped member  145  includes a generally straight portion  147  and a downwardly angled portion  149 . A pair of horizontally aligned and fixedly spaced leg-engaging members  148 ,  150  is pivotally mounted to the angled portion  149  of the L-shaped member  145 . The leg-engaging members  148 ,  150  are pivotally movable with the angled portion  149  from a normal inoperative position disposed outwardly of the user support assembly  22 . Another pair of horizontally aligned and fixedly spaced leg-engaging members  151 ,  153  are mounted to the angled portion  149  above the other pair of leg-engaging members  148 ,  150  in vertically spaced relation with respect thereto. 
   A pair of leg curl members  152 ,  154  are mounted to the generally straight portion  147  outwardly of the outer end portion  146  so as to engage a user&#39;s legs during leg curl exercises. The leg curl members  152 ,  154  are positioned in a normal inoperative position spaced upwardly and outwardly from the inoperative position of the leg-engaging members  148 , 150  and move with the leg-engaging unit  144 . 
   In the illustrated embodiment, a pulley member  159  is rotatably mounted to the angled portion  149  of the L-shaped member  145 . An elongated flexible non-extensible element  158  has one end connected to a selectively connectable and disconnectable connector  156 , which is selectively connected to the third connecting terminal  142 . The elongated flexible non-extensible element  158  extends away from the third connecting terminal  142  toward the leg-engaging unit  144 . The elongated flexible non-extensible element  158  abuts a pair of rollers  203 , i.e., the lower roller of the pair, and is trained around the pulley member  159 . The elongated flexible non-extensible element  158  extends from the pulley member  159  through the pair of rollers  203 , i.e., between the upper and lower rollers, to the guide pulley member  87 . The elongated flexible non-extensible element  158  is trained around the guide pulley member  87  and extends upwardly along the centrally located upright frame member  162  toward the hand grip bar assembly  160 . 
   The bungee cords  63 , which constitute the terminal end  52 ,  54  of the first and second flexible elongated structures  48 ,  50 , are connected to the third connecting terminal  142  in opposing relation to the connector  156  by the lower hook connectors  130 . 
   The elongated flexible non-extensible element  158  facilitates the first and third connecting terminals  134 ,  142  and the second and third connecting terminals  136 ,  142  to move away from one another when one of the moving assemblies  32 ,  34 ,  144  is moved away from the normal inoperative position thereof. 
   As best shown in FIGS.  1  and  7 – 14 , the hand grip bar assembly  160  is mounted to extend upwardly from the mounting support member  76 . A centrally located upright rigid frame member  162  is disposed within the interior of the mounting support member  76  and is fixedly secured therein by welding or any known manner such as, for example screws, nuts and bolts, friction fit, interference fit or any fastener arrangement known in the art. 
   Alternatively, the fastener arrangement may include a pin and opening arrangement whereby the pin is removable received through a pair of horizontally aligned openings (not shown) extending through the mounting support member  76  and the frame member  162 . That way, the fastener could allow optional removable attachment of the frame member  162  of the hand grip assembly bar  160 . 
   The hand grip bar assembly  160  is carried by the central upright rigid frame member  162  in a normal inoperative position with respect to the user support assembly  22 . An upper inclined end  170  of the hand grip bar assembly  160  may be pivoted away from the leg-engaging unit  144  with respect to the central upright rigid frame member  162  via a pivot pin  165 . The upper inclined end  170  may be retained in either the upright position ( FIG. 1 ) or the pivoted position ( FIG. 14 ) by a pin and opening arrangement. Alternatively, the central upright rigid frame member  162  may be configured to stop pivotal movement of the upper inclined end  170  away from the leg-engaging unit  144 . 
   The pin and opening arrangement may include a pin  163 , which is removably received through a pair of vertically spaced aligned openings (not shown) extending through the central upright rigid frame member  162 . The pin  163  may be removably received through any two of the aligned openings to allow pivotal adjustment of the upper portion  170  for accommodating the leg-engaging unit  144  when the exerciser is moved into the storage position thereof, as will be further described below. The pin  163  may be removed from the openings to allow the upper inclined end  170  to pivot away from the leg-engaging unit  144 . 
   The elongated flexible non-extensible element  158  extends upwardly from the guide pulley member  87  along the centrally located upright frame member  162  and over two upper pulleys  167 ,  168 . The two upper pulleys  167 ,  168  are rotatably mounted on the upper inclined end  170  of the centrally located upright frame member  162 . 
   A manually engageable hand grip bar  172  defines an opening  173  in a mid-portion thereof. The hand grip bar  172  is latched to a conventional latching mechanism  177  that is disposed on the end of the elongated flexible non-extensible element  158 . The elongated flexible non-extensible element  158  and latching mechanism  177  extends from both upper pulleys  167 ,  168 , and latches the hand grip bar  172  through the opening  173  therein. 
   In the exemplary embodiment, the hand grip bar  172  may be engaged by a user and moved away from the normal inoperative position of the hand grip bar assembly  160  into a desired extended position thereof by a user supported on the user support assembly  22 . 
   The upper inclined end  170  may include a pair of J-shaped supporting elements  161 , which are rigidly mounted to opposite sides thereof. The J-shaped supporting elements  161  are configured to receive and retain the hand grip bar  172  therebetween to stabilize and preclude swinging thereof when not being used. Alternatively, the J-shaped supporting elements  161  may be pivotally mounted to opposite sides of the upper inclined end  170 . 
   An annular stop element  175  is disposed between the latching mechanism  177  and the upper inclined end  170 . The upper inclined end  170  together with the uppermost pulley member  168  precludes the stop element  175  and the elongated flexible non-extensible element  158  from moving due to the resilient bias exerted by the bungee cords  63 . 
   In the embodiment illustrated in  FIGS. 1–3 , the connector  156  is connected to the connecting terminal  142  so as to render the leg-engaging unit  144  and the hand grip bar assembly  160  to have the movement thereof away from the inoperative position thereof resisted by the bungee cords  63 . That way, the bungee cords  63  may provide resistance to the movement of the leg-engaging unit  144  and the hand grip bar assembly  160  without disconnecting or connecting the connector  156 . 
     FIG. 5  illustrates a bungee cord  63  having the hook connectors  126 ,  130  disposed on opposite terminal ends  128 ,  132  thereof. The hook connectors  126 ,  130  are of the same construction and operation as one another. Each hook connector  126 ,  130  includes a flexible movable element  169  extending from the enlarged annular portion  171 . The flexible movable elements  169  are preferably made from plastic so as to allow easy passage of the respective connecting terminal  134 ,  136 ,  142  therethrough. That way, each hook connector  126 ,  130  may be quickly connected to and quickly disconnected from the respective connecting terminal  134 ,  136 ,  142 . 
   The annular portions  171  of the hook connectors  126 ,  130  are constructed to engage the respective upper stop structures  94 ,  96  and the stop structures  90 ,  92 , respectively, when the first and second moving assemblies  32 ,  34  are moved into the normal inoperative positions thereof. 
   Extending through each hook connector  126 ,  130  is a conventional fastener  157 , which fixedly secures each bungee cord  63  thereto. The fastener  157  secures the bungee cords  63  to the annular portions  171  so that forces exerted on the bungee cords  63  can be transmitted through the respective hook connector  126 ,  130  without the bungee cords  63  becoming unattached from the annular portions  171 . 
   The hook connectors  126 ,  130  may be molded from a plastic material, however, it is contemplated that the hook connectors  126 ,  130  may be constructed in any known manner. The hook connectors  126 ,  130  may be of any known material capable of providing sufficient strength or rigidity that may easily connect and disconnect from the connecting terminals  134 ,  136 ,  142 . 
   As best shown in  FIGS. 1–3 , the user support assembly  22  includes an elongated support member  174 . The elongated support member  174  has one end  176  connected to a U shaped frame support member  188 , with the opened portion of the U configuration facing downwardly toward the cross member  70 . Spaced ends  190  of the support member  188  are integrally attached to cross member  70  in substantially perpendicular relation thereto. The elongated support member  174  extends in an operative position generally horizontally outwardly from a pivoted frame bracket member  182  extending from the support member  188 . The elongated support member  174  is pivotally attached to the support member  188  by a pivot pin  213 , which horizontally extends through both the elongated support member  174  and the pivoted frame bracket member  182 . 
   In the illustrated embodiment, the pivoted frame bracket member  182  provides a projecting flange  215 , which projects outwardly from the pivoted frame bracket member  182  toward the leg-engaging unit  144 , and an upwardly extending flange  217 . The projecting flange  215  and the upwardly extending flange  217  define a pair of centrally disposed fastener-receiving holes  219 ,  220 , respectively, therein. The fastener-receiving holes  219 ,  220  can align with fastener-receiving holes (not shown) in the elongated support member  174  for removably receiving a removable fastener or pin  216  therethrough, as will be described in greater detail below. 
   A slide frame unit  178  supports a user seat member  180  in slidable relation with respect to the elongated support member  174  to be moved horizontally with respect thereto. The user seat member  180  is slidably mounted on the elongated support member  174  to be moved into operative position thereof between an outer position and an inner position. The inner position of the user seat member  180  is spaced inwardly of and at generally the same level as the outer position. 
   In the illustrated embodiment, a pivoted strut frame  184  and a pivoted support frame unit  181  are disposed in supporting relation to a seat back member  186 . The seat back member  186  is pivotally connected to the slide frame unit  178  by the pivoted support frame unit  181 . A removable cylindrical shaft member  185  extends through and is supported in journaling openings  141  ( FIG. 10 ) formed in the slide frame unit  178  and the pivoted support frame unit  181 . Thus, the pivoted support frame unit  181  and the removable cylindrical shaft member  185  cooperate to form a pivot axis about which the user seat back member  186  may pivot relative to the user seat member  180  without obstruction. The removable cylindrical shaft member  185  may be removable from the journaling openings  141  such that the seat back member  186  may be detached from the user seat member  180 . 
     FIG. 6  best illustrates the pivoted support frame unit  181  and the seat back member  186 . One end  189  of the pivoted strut frame  184  is connected to the seat back member  186 . The pivoted support frame unit  181  includes a pair of longitudinally elongated support members  198  and a pair of cross support members  191 , which are fixedly secured to the seat back member  186 . A cylindrical shaft  183  extends through a through hole (not shown) in the end  189  of the pivot strut frame  184  and is fixedly secured to each of the longitudinally elongated support members of the pivoted support frame unit  181 . The end  189  of the pivot strut frame  184  is pivotally connected to the shaft  183  so that the pivot strut frame  184  may be pivoted relative to the seat back member  186 . 
   As best illustrated in  FIGS. 3 and 13 , a pair of U-shaped mounting brackets  223 ,  225  extends upwardly from the elongated support member  174  in spaced relation with respect to one another in the longitudinal direction along the elongated support member  174 . Each mounting bracket  223 ,  225  may have an opening (not shown) formed therethrough for receiving a removable pin, such as a similar removable pin as the removable pin  163  described above, therethrough. The free ends of the mounting brackets  223 ,  225  open upwardly so that the pivoted strut frame  184  may be received therebetween. Another end  187  of the pivoted strut frame  184  may be pivotally connected through the openings in the mounting brackets  223 ,  225  of either one of the mounting brackets  223 ,  225  by a cylindrical shaft, such as, for example, a releasable locking pin. 
   Pivotally connecting the end  187  between the free ends of the mounting bracket  223  generally decreases the angle at which the user seat member  180  and the seat back member  186  are positioned with respect to one another. In other words, the seat back member  186  may be disposed at a steeper inclination with respect to the user seat member  180  by pivotally connecting the end  187  between the free ends of the mounting bracket  225 . 
   The pivoted support frame unit  181  and the pivoted strut frame  184  constitute the seat back mounting structure. The seat back mounting structure can be constructed and arranged to enable the seat back  186  to be selectively retained in an inline bench position and an upright position thereof. In the inline bench position, the seat back  186  extends in generally horizontally aligned relation to the user seat member  180  and the pivoted strut frame  184  is moved into a position between the mounting structures  223 ,  225 , which are upwardly extending from the elongated support member  174 . 
   In the upright position, the pivoted strut frame  184  extends generally inwardly in inclined relation to the user seat member  180  in response to the movement of the user seat member  180  between the outer and inner positions thereof, respectively. One of the ends  187 ,  189  of the pivoted strut frame  184  is releasably secured between the free ends of either mounting bracket  223 ,  225 . 
   The slide frame unit  178  includes a series of rollers  194 . The rollers  194  are conventionally secured to the slide frame unit  178 , such as for example, by fasteners, so as to engage oppositely facing sides of the elongated support member  174 . The rollers  194  are constructed and arranged to roll along the elongated support member  174  in rolling relation thereto as the user seat member  180  is moved between the inner or outer positions thereof, such as during the rowing exercise shown in  FIG. 10 . 
   A releasably engageable lock  196  is disposed in operative relation between the slide frame unit  178  and the elongated support member  174 . The releasably engageable lock  196  releasably locks the user seat member  180  in either of the inner or outer positions thereof by extending through the horizontally aligned holes  197 ,  199 , respectively, in the elongated support member  174 . 
   In an alternative embodiment not shown, the elongated support member  174  may be telescopically constructed so as to permit movement of the user seat member  180  from the outer position thereof to the inner position thereof by moving the elongated support member in a telescoping manner. 
   The elongated support member  174  is pivoted at its end  176  so as to be moved between the operative position thereof and an upright storage position. In the operative position, the fastener-receiving holes in the elongated support member  174  align with the fastener-receiving holes  219  in the projecting flange  215 . By inserting the removable pin  216  through the aligned holes, the elongated support member  174  may be releasably locked into its operative position. 
   In the storage position, the elongated support member  174 , an outer leg structure  192  and the seat and seat back members  180 ,  186  are pivoted about the end  176  so as to be positioned alongside the upright frame member  162  and the mounting support member  76 . In the storage position, the fastener-receiving holes in the elongated support member  174  align with the fastener-receiving holes  220  in the upwardly extending flange  217 . By inserting the removable pin  216  through the aligned holes, the elongated support member  174  may be releasably locked into its storage position. 
   The outer leg structure  192  is generally U-shaped and opens downwardly to have a pair of spaced ends  193 . The outer leg structure  192  is fixed, preferably by welding, to the elongated support member  174 . The spaced ends  193  of the outer leg structure  192  engage and are supported on the horizontal surface  16  in spaced relation to the frame  12 . The spaced legs  193  support the elongated support member  174  while the elongated support member  174  is in the generally horizontally outwardly extending relation from the U shaped member  188  and the lower frame portion  14 . A support member  202  extends between the spaced ends  193  of the outer leg structure  192  so as to provide support to the user support assembly  22  when a user is positioned thereon. 
   Extending vertically from the mid-portion of the outer leg structure  192  is an arm support mounting member  200 . The arm support mounting member  200  has a hollow transverse cross section, preferably substantially rectangular in form so as to provide sufficient mounting structure for the leg-engaging unit  144 . A rubber stop member  201  is mounted on the arm support mounting member  200 . The angled portion  149  of the leg-engaging unit  144  abuts the rubber stop member  201  when in the normal inoperative position thereof. 
   As illustrated in  FIGS. 1–3  and  7 – 14 , it may be preferable to fixedly mount a pair of rollers  203  to the lower portion of the arm support mounting member  200 . However, the pair of rollers  203  may be fixedly mounted to the lower portion of the support member  202  as well. The pair of rollers  203  may be configured to facilitate movement of the elongated flexible non-extensible element  158  thereby as the leg-engaging unit  144  is moved from the inoperative position thereof to the extended position thereof. For example, the pair of rollers  203  roll when the elongated flexible non-extensible element  158  moves thereby to allow smooth movement of the leg-engaging unit  144 . The pair of rollers  203  may engage the elongated flexible non-extensible element  158  in rolling relation to thereby reduce frictional wear on the elongated flexible non-extensible element  158  during movement. 
   An upper arm supporting pad  204  has a mounting member  205  extending downwardly therefrom to extend into the arm support mounting member  200 . The mounting member  205  is secured within the hollow configuration of the arm support mounting member  200  by a fastener such that the arm supporting pad  204  is downwardly angled toward the leg-engaging unit  144 . 
   It may be preferable for the fastener to be a pin and opening arrangement whereby a pin  207  is removably received through a series of vertically spaced aligned openings  209  extending through the arm support mounting member  200  and the mounting member  205 . The openings  209  are disposed in vertically spaced relation in a series. The pin  207  may be removably received through any two of the series of aligned openings  209  to allow height adjustment of the upper arm supporting pad  204  for accommodating users of different physical sizes. The pin  207  may be removed from the openings  209  to remove the upper arm supporting pad  204  and the mounting member  205  from the arm support mounting member  200 . The upper arm supporting pad  204  and the mounting member  205  may also be fixedly attached to the arm support mounting member  200 , for example, by welding. Other fasteners capable of fixedly attaching the upper arm supporting pad  204  and the mounting member  205  to the arm support mounting member  200  may be used. 
   An arm lift unit  206  includes a pair of horizontally aligned and fixedly spaced hand-engaging members  208 . The hand-engaging members  208  are attached to a linkage bar  210 , which is pivotally mounted to the generally straight portion  147  of the L-shaped member  145  by a U-shaped bracket member  211  in spaced relation from the outer end  146 . The linkage bar  210  may be a chain or any other rigid structure for connecting the hand-engaging members  208  to the leg-engaging unit  144 . 
   The arm lift unit  206  enables a user supported on the user support assembly  22  with their upper arms engaged on the arm-engaging pad  204  to move the leg-engaging unit  144  from the inoperative position thereof to the extended positions thereof. 
   The outer end  146  of the user support assembly  22  upwardly and outwardly extends from the arm support mounting member  200 . The outer end  146  pivotally mounts the leg-engaging unit  144  thereto by a pivot pin  212  so that the user may move the leg-engaging unit  144  away from the normal inoperative position thereof into the desired extended position. Due to the arrangement of the elongated flexible non-extensible element  158  and the pulley member  159 , when the leg-engaging unit  144  is moved away from the normal inoperative position thereof into the desired extended position, the resistance provided thereto may be essentially doubled. 
   Although the construction of the exerciser  10  has been described hereinabove having the leg-engaging unit  144  connected with the hand grip bar assembly  160 , a second exemplary embodiment may include an exerciser having the leg-engaging unit  144  and the hand grip bar assembly  160  as separate, independent moving assemblies. 
   For example, the guide pulley member  87  may be removed from the mounting support member  76  and the elongated flexible non-extensible element  158  may be divided into two elongated flexible non-extensible elements, a first elongated flexible non-extensible element being provided for the leg-engaging unit  144  and a second elongated flexible non-extensible element being provided for the hand grip bar assembly  160 . The first elongated flexible non-extensible element may be fixedly secured to the mounting support member  76  at one end thereof and the connector  156  at the opposite end thereof. By securing the first elongated flexible non-extensible element to the mounting support member  76 , the leg-engaging unit  144  would be selectively operable by connecting the connectable and disconnectable connector  156  to the third connecting terminal  142 , as will be further described below. 
   The second elongated flexible non-extensible element might extend downwardly toward the lower frame portion  14  such that a selectively connectable and disconnectable connector, similar to hook connectors  126 ,  130 , could be fixedly secured thereto. The connector could then be selectively connected to the third connecting terminal  142  so as to render the hand grip bar assembly  160  selectively operable, as will be further described below. 
   With the leg-engaging unit  144  and the hand grip bar assembly  160  being separate, independent moving assemblies, the operations thereof are similar to that described below. However, the user may selectively switch the connecting terminal  142  from being used with the leg-engaging unit  144  to being used with the hand grip bar assembly  160 . For example, the third connecting terminal  142  may be disconnected from the connector  156  and connected the connector suspended from the second elongated flexible non-extensible element of the hand grip bar assembly  160  instead. 
   Alternatively, the pulley member  159  may be replaced with a connecting element, i.e., a metal connector, such that the first elongated flexible non-extensible element directly connects with the leg-engaging unit  144 . That way, the first elongated flexible non-extensible element connects to the third connecting terminal  142  at one end thereof and to the leg-engaging unit  144  via the connecting element at an opposite end thereof. By replacing the pulley member  159  with a connecting element, the amount of resistance provided to the leg-engaging unit  144  by the bungee cords  63  is not changed, i.e., the resistance is not increased. 
   OPERATION  
   In  FIGS. 7–13 , a user U is shown schematically. Motions of the user&#39;s arms, legs, or body, as well as motions of the moveable parts of the exerciser  10  are illustrated by broken lines. Resistance is provided by the resilient bungee cords  63  and can be adjusted to suit the user&#39;s requirements and physical abilities, as described above. Various exercises are described below in connection with different positions of the user. 
   Before certain hand, arm or chest exercises can be performed, each hand grip unit  56 ,  58  must be attached to the respective moving assembly  32 ,  34 . To attach the hand grip units  56 ,  58 , the user U latches each hand grip unit  56 ,  58  to either the respective looped end portion  110 ,  112  or to the respective looped intermediate portion  114 ,  116  depending on the user&#39;s physical size. For example, a user of large physical size may be more comfortable with the hand grip unit  56 ,  58  attached to the looped intermediate portions  114 ,  116 . 
   The exercises illustrated in  FIGS. 7 ,  8 ,  9 ,  11  and  12  are performed with the user support assembly  22  in the outside position thereof. The exerciser  10 , however, enables the user U to execute a variety of physical exercises with the user support assembly  22  in the upright or inside position thereof. ( FIG. 3 ). 
   The hand grip units  56 ,  58  are identical in construction and operation, therefore only the operation of the hand grip unit  56  will be described below. 
   After latching the hand grip unit  56  to one of the looped portions  110 ,  114 , the user U may perform various arm, chest and shoulder exercises therewith by moving the hand grip unit  56  away from the pulley member  40 . 
   As shown in  FIGS. 1–3  and  7 – 14 , the first connecting terminal  134  is connected with the flexible elongated non-extensible element  102  via the upper hook element  126 . That way, the first connecting terminal  134  and the flexible elongated non-extensible element  102  move substantially in the same direction when the moving assembly  32  is moved away from the normal and operative position thereof. Particularly, as the hand grip unit  56  is moved away from the lower pulley member  40 , the lower hook connector  130  engages the lower bungee cord stop structure  90 , which in turn, allows the moving assembly  32  to be manually moved downwardly away from the normal inoperative position thereof. 
   The bungee cords  63  may be constructed such that the hook elements  126 ,  130  are permitted to move relatively away from one another so that the manual movement of the first and second moving assemblies  32 ,  34  away from the inoperative positions thereof cause the first and second connecting terminals  132 ,  134  to move away from the third connecting terminal  142 . The bungee cords  63  connected to the first and second connecting terminals  132 ,  134  provide resilient resistance throughout the operative extent thereof to the movement of the first and second moving assemblies  32 ,  34  away from the inoperative positions thereof. 
   Without sufficient manual force on the hand grip unit  56  away from the lower pulley  40 , the bungee cords  63  provide a resilient bias throughout the operative extent thereof to move the first and third connecting terminals  134 ,  142  toward one another. The resilient bias of the bungee cords  63  will move the moving assembly  32  toward the normal inoperative position thereof until the stop element  106  on the flexible elongated non-extensible element  102  abuts the stop structure  98 . 
   During various exercises, as will be described in greater detail below, it may be preferable for the user U to maintain manual force on the hand grip unit  56  away from the lower pulley member  40 . That way, the bungee cords  63  provide continuous resilient resistance to the exercised muscle throughout the exercise. 
   It may be preferable for the lower hook element  130  to be precluded from movement so that the lower hook element and will not abut the lower pulley member stop structure  90  when the first and second moving assemblies  32 ,  34  are in the inoperative positions thereof. For example, the lower hook element  130  may be connected with the leg-engaging unit  144  and/or the hand grip bar assembly  160  via the third connecting terminal  142 . 
   The operation of the leg-engaging unit  144  will now be described ( FIGS. 2 and 8 ). To prepare the leg-engaging unit  144  for certain leg exercises, the user U connects the lower hook element(s)  130  to the third connecting terminal  142  so that the bungee cord  63  may provide resilient resistance to the leg-engaging unit  144 . The hook element(s)  130  and the connector  156  are connected to the third connecting terminal  142  so that they move together as the leg-engaging unit  144  is moved into its extended position. 
   Movement of the leg-engaging unit  144  away from the inoperative position thereof causes the third connecting terminal  142  to move away from the first and second connecting terminals  134 ,  136 . Thus, enabling the bungee cords  63  connected to the first and second connecting terminals  134 ,  136  to provide resilient resistance throughout the operative extent thereof to the movement of the leg-engaging unit  144  away from the inoperative position thereof. 
   As the leg-engaging unit  144  is moved towards its extended position, the L-shaped member  145  is pivoted about the outer end portion of  146 . The flexible non-extensible element  158  slides between the pair of rollers  203  so as to allow the leg-engaging unit  144  to move smoothly from the normal inoperative position thereof into the desired extended position thereof. In the extended position, the angled portion  149  is disposed in substantially parallel relation with respect to the horizontal surface  16 . 
   The operation of the hand grip bar assembly  160  will now be described ( FIGS. 1–3  and  12 ). 
   It will be appreciated that the third connecting terminal  142  need not be disconnected from the connector  156  to prepare the hand grip bar assembly  160  for certain arm, chest and shoulder exercises. Since the connector  156  remains connected to the third connecting terminal  142 , the user may quickly switch from using either the leg-engaging unit  144  or the hand grip bar assembly  160  to using the other of the two operable assemblies  144 ,  160 . 
   When the third connecting terminal  142  is connected to the hook connector  156 , the resilient bias of the bungee cords  63  causes the stop element  175  positioned on the flexible non-extensible element  158  to abut against the uppermost pulley  168  and the inclined portion  170 . The stop element  175  remains stationary while the third connecting terminal  142 , which remains connected to the connector  156 , moves in substantially the same direction as the hook connector  156  when the hand grip bar assembly  160  is engaged and moved away from the normal inoperative position thereof. When moved away from the normal inoperative position thereof, the manually engageable hand grip bar  172  is moved toward a desired extended position thereof by manual force exerted by a user U supported on the user support assembly  22 . As the hand grip bar  172  is moved away from its normal inoperative position and toward its desired extended position, the bungee cords  63  provide resilient resistance to the movement thereof as the hand grip bar  172  is moved. The stop element  175  and the latching mechanism  177  move together with the hand grip bar  172  as the hand grip bar  172  is moved away from its normal inoperative position. 
   The operation of exerciser  10  has been fully described above, however, to show the versatility of the exerciser  10  various exercise examples will be described in greater detail below. 
   Although exercises can be performed individually or successively, it is contemplated that the exercises described herein may be performed in any sequence. An exemplary workout having a particular exercise sequence is described below, but more or less exercises can be performed at the user&#39;s discretion. 
   As shown in  FIG. 7 , the hand grip units  56 ,  58  are latched to the looped end portions  110 ,  112 , respectively, and the third connecting terminal is connected to the connector  156 . The user support assembly  22  is in its inline bench position thereof or outer position thereof so that the user seat member  180  and the seat back member  186  are substantially parallel to the horizontal surface  16 . 
   First, the user U straddles the user seat member  180  with his/her feet so as to face the leg-engaging unit  144 . The user&#39;s lower legs (i.e., their shins) engage the leg-engaging members  148 ,  150  and the user&#39;s upper legs (i.e., the back of their knees) engage the leg-engaging members  151 ,  153  that are mounted to the angled portion  149 . The user U may then be seated on the user seat member  180  such that the user&#39;s upper legs rest on the leg-engaging members  151 ,  153 . The user&#39;s upper arms (i.e., their tricep muscle area) are supported on the upper arm supporting pad  204 . The mounting member  205  and the upper arm supporting pad  204  may be vertically adjusted in accordance with the user&#39;s physical size. 
   As best shown in  FIG. 7 , once positioned on the user seat member  180  with their upper arms on the upper arm supporting pad  204 , the user may perform a preacher curl exercise. To perform the preacher curl exercise, the user U would manually grasp the hand-engaging members  208  with an under the handle grip (palms facing upward). The user U would then pull the hand-engaging members  208  toward his/her shoulders, which in turn, causes the linkage bar  210  attached to the straight portion  147  to move the leg-engaging unit  144  from its normal inoperative position into its desired extended position. The bungee cords  63  provide resistance to the movement of the leg-engaging unit  144  as described above and the user U is able to exercise his/her bicep muscle. 
   Alternatively in this position and not shown, the user U may vary his/her grip from an under the handle grip on the hand-engaging members  208  to an over the handle grip on the hand-engaging members  208 . By switching his/her grip on the hand-engaging members  208  and by pulling the hand-engaging members  208  toward his/her shoulders, the user U may exercise different muscles (i.e., their forearm). 
   In some instances, it may be preferable for the user U to use his/her legs during the preacher curl exercise to assist his/her arms in moving the leg-engaging unit  144  from its normal inoperative position into its desired extended position. By using his/her legs to help move the leg-engaging unit  144  into its desired extended position, the user U may have a higher load on his/her arms during the return or “negative” stroke. In the “negative” stroke, the leg-engaging unit  144  is returned to its normal inoperative position from its desired extended position. As a result of this technique, the user U could resist more weight or resistance than he/she could lift using only his/her arms during the “negative” stroke of the preacher curl exercise, which may help the user U build more muscle mass. 
   While sitting on the seat member  180  after finishing the preacher curl exercise, the user U may remove the mounting member  205  and the upper arm supporting pad  204  from the arm support mounting member  200  by removing the pin  207  from the horizontally aligned openings  209 . The pin  207  may then be replaced through the openings  209  in the mounting member  205  once the mounting member  205  is removed from the arm support mounting member  200 . 
   With the mounting member of  205  and the arm supporting pad  204  removed from the arm support mounting member  200 , the user U may easily access the leg-engaging unit  144  to perform a leg extension exercise or a leg-curl exercise, as best shown in  FIG. 8 . 
   To perform the leg extension exercise, the user U remains in the same position as during the preacher curl exercise and extends his/her legs forwardly and outwardly from the outer leg structure  192  until his/her legs are substantially parallel with the horizontal surface  16 . This movement causes the leg-engaging members  148 ,  150  of the leg-engaging unit  144  to move from the normal operative position thereof into the desired extended position thereof and provides resilient resistance to the user&#39;s legs, especially their quadriceps muscle. While performing a leg extension exercise, the user U may hold onto the seat back member  186  or user seat member  180  for additional support. Also, the user U may grasp the hand-engaging members  208  during the leg extension exercise to assist the leg-engaging unit  144  in moving from its normal inoperative position to its desired extended position. By using his/her arms to help move the leg-engaging unit  144  into its desired extended position, this technique allows the user U to have a higher load on his/her legs during the return or “negative” stroke. That way, the user U can resist more weight or resistance than he/she could lift using only his/her legs during the “negative” stroke of the leg extension exercise, which may help the user U build more muscle mass, as described above. 
   After the leg extension exercise, the user U may perform the leg-curl exercise. To perform the leg-curl exercise, the user U would reposition himself/herself on the user support assembly  22 . The user U repositions himself/herself by standing up from his/her seated position on the user seat member  180 . Then he/she moves to straddle the user seat member  180  with his/her feet so as to face the rigid upright support members  18 ,  20 . The user&#39;s lower legs (i.e., their shins) engage the leg-engaging members  148 ,  150  and the user&#39;s upper legs (i.e., their thigh or quadriceps muscle) engage the leg-engaging members  151 ,  153 . 
   The user U would then lay face down on the user support assembly  22  so that his/her legs (i.e., their calves) engage the leg curl members  152 ,  154 . Once positioned, the user U may perform the leg curl exercise to exercise his/her hamstring muscle by bending his/her knee to move the angled portion  149  so that it is substantially parallel to the horizontal surface  16 . 
   After finishing the leg curl exercise, the user U is finished with the leg-engaging unit  144  in the exemplary workout. 
   The user U may perform various arm, chest and shoulder exercises using the hand grip units  56 ,  58 . For example, a bicep curl may be performed by the user U when he/she is standing above the seat back member  186  with his/her feet straddling the seat back member  186  so as to face the rigid upright support members  18 ,  20 . The user U grasps the hand grip units  56 ,  58  so that his/her arms are fully extended downwardly and his/her palms face the rigid upright support members  18 ,  20 . Then, the user U would bend his/her arms upwardly at his/her elbows so that the hand grip units  56 ,  58  would be pulled toward his/her shoulders. The bungee cords  63  resiliently resist this upward movement to exercise the bicep muscle of the user&#39;s arm. 
     FIGS. 9 and 10  illustrate two different seated rowing exercises.  FIG. 9  shows one seated rowing exercise which may be performed by the user U by sitting on the seat back member  186  facing the rigid upright support members  18 ,  20 . The user U grasps the hand grip units  56 ,  58  with an over the handle grip and slightly leans backward toward the leg-engaging unit  144 . Then, the user U may clasp his/her fingers together so as to bring the hand grip units  56 ,  58  together. The user U pulls the hand grip units  56 ,  58  simultaneously toward his/her chest or abdomen against the resilient bias of the bungee cords  63 . 
   The user U may not choose to clasp his/her fingers together when performing the seated row exercise, for example, due to personal preference. In this case, the hand grip units  56 ,  58  may be moved independently of one another against the resilient bias of the bungee cords  63 . 
   Alternatively,  FIG. 10  shows another seated rowing exercise. As illustrated, the user U may perform a different seated rowing exercise using the sliding capabilities of the user seat member  180 . In this exemplary exercise, the user U might remove the removable cylindrical shaft member  185  of the pivoted frame support unit  181  from the journaling openings  141  to detach the seat back member  186  from the user seat member  180 . Then, the user U may remove the releasably engageable lock  196  from the aligned holes  197  or  199  so that the user seat member  180  can slide along the elongated support member  174  in the longitudinal direction thereof. That way, instead of pulling the hand grips  56 ,  58  toward his/her chest or abdomen as in the above described seated rowing exercise, the user U might hold the hand grip units  56 ,  58  near his/her chest or abdomen and roll the user seat member  180  along the elongated support member  174  against the resilient bias of the bungee cords  63 . 
   One way that the user U may roll the user seat member  180  along the elongated support member  174  via the sliding frame unit  178  would be to position his/her feet on the pulley mounting bar  80 , the protruding member  81  or the spaced ends  190  of the support member  188  for support.  FIG. 10  shows the user U supporting his/her feet on the spaced ends  190 , however, the user U may choose to rest his/her feet on the protruding member  81 . Then, by extending his/her legs outwardly, the user could move the user seat member  180  from end  176  of the elongated support member  174  to the opposite end  179  thereof against the resilient bias of the bungee cords  63 . 
   The user U may reconnect the seat back member  186  and the user seat member  180  together by reinserting the cylindrical shaft member  185  through the journaling openings  141 . It may be preferable for the user U to lock the user seat member  180  from moving by reinserting the releasably engageable lock  196  into the aligned openings  197 ,  199  before reconnecting the seat back member  186  thereto. Either way, once the seat back member  186  and the user seat member  180  are reconnected, the user U may perform other exemplary exercises described below. 
   As shown in  FIG. 11 , a military or shoulder press may be performed to exercise the arms and shoulders of the user U. First, the user U repositions himself/herself so as to be facing the leg-engaging unit  144  in a seated position on the seat back member  186 . Then, the user U grasps the hand grip units  56 ,  58  with an over the handle grip and bends his/her arms so to position them laterally and inline with his/her shoulders with his/her palms face upwardly. The user U would then extend the hand grip units  56 ,  58  above his/her head so to extend his/her arms against the resistance of the bungee cords  63 . 
   To perform arm, chest and shoulder exercises with the hand grip bar assembly  160 , the user U may connect the latching mechanism  177  through the opening  173  in the hand grip bar  172  to secure the hand grip bar  172  to the elongated flexible non-extensible element  158 . Alternatively, the user U may remove the hand grip bar  172  from the J-shaped supporting elements  161 , if the hand grip bar  172  is already connected to the hand grip bar assembly  160 . 
   As best shown in  FIG. 12 , the user U may sit in a seated position on the seat back member  186  so as to face the rigid upright support members  18 ,  20 . In this seated position, the user U may perform a lat pull down exercise, where the user U grasps the hand grip bar  172 , slightly leans toward the leg-engaging unit  144 , and pulls the hand grip bar  172  towards his/her chest or abdomen. Alternatively, another pull down exercise can be performed by the user U sitting vertically on the seat back member  186  and pulling the hand grip bar  172  toward the back of his/her neck. The user U may also perform the lat pull down exercise while facing the leg-engaging unit  144  in this seated position. 
   In the exemplary workout, the user U may then sit up from his/her seated position on the seat back member  186  so as to stand above the user seat member  180  with his/her feet straddling the user seat member  180 , facing the rigid upright support members  18 ,  20 . To perform the tricep pull down exercise (not shown), the user U manually grasps the hand grip bar  172  with an over the handle grip so that the user&#39;s arms are bent at an angle equal to or less than 90 degrees. As the user extends his/her arms downwardly so as to straighten his/her arms, the hand grip bar  172  is moved from the normal inoperative position thereof to the extended position thereof against the resilient resistance of the bungee cords  63  to exercise the user&#39;s triceps muscle. 
   As best shown in  FIG. 13 , a bench press exercise and/or a chest fly exercise may be performed to exercise certain arm, chest and shoulder muscles. However, to effect these exercises, it may be preferable to move the user seat member  180  from the outer position thereof into the inner position thereof such that the seat back member  186  is disposed at a upwardly sloping angle with respect to the user seat member  180 . 
   In order to move the user support assembly  22 , the user U removes the releasably engageable lock  196  from the aligned holes  197 . That way, the user seat member  180  can move from the outer position thereof to the inner position thereof via the rollers  194  sliding along the elongated support member  174 . The user seat member  180  is moved to its inner position along the elongated support member  174  and releasably locked in the inner position thereof by the releasably engageable lock  196  extending through the horizontally aligned holes  199 . 
   The chest fly exercise may be performed with the user U in the seated position such that the angled seat back support member  186  supports his/her back. To perform the chest fly exercise, the user U would grasp the hand grip units  56 ,  58  and laterally extend his/her arms so that the hand grip units  56 ,  58  are extended away from his/her chest. Then, the user U moves the hand grip units  56 ,  58  in an forwardly arcuate, sweeping motion so as to bring the hand grip units  56 ,  58  together in front of his/her chest against the resilient resistance of the bungee cords  63 . The user U would resist the resilient bias of the bungee cords  63  as he/she move his/her arms back to the laterally extended position in a rearwardly arcuate, sweeping motion. 
   Another exercise that may be performed with the user U sitting in the user seat assembly  22  when the user seat assembly  22  is in the inner position thereof is a bench press exercise, which exercises the arms and chest of the user U. The user U would grasp the hand grip units  56 ,  58  with an over the hand grip and bends his/her arms so to position them laterally and inline with his/her shoulders with his/her palms face forwardly. The user U would then extend the hand grip units  56 ,  58  forwardly away from his/her chest so to extend his/her arms against the resistance of the bungee cords  63 . 
   The hand grip units  56 ,  58  may be stored on the pulley mounting member  80  when not in use. Also, the user U may grasp the hand grip units  56 ,  58  with different grips on the hand grip units  56 ,  58 , e.g., an under the handle grip, so as to exercise different muscle groups of the user U for each exercise described hereinabove. 
   It may be preferable for the exerciser  10  to be stored in the storage position thereof after the user U completes his/her workout. In this case, after moving the user support assembly  22  into the inline bench position shown in  FIG. 7 , the user U might remove the removable pin  216  from the holes  219 . Then, the user U pivots the user support assembly  22  with respect to the frame assembly  12  about the pivoted frame bracket member  182 . This pivotal movement positions the user support assembly  22  substantially parallel to the mounting support member  76  such that the user support assembly  22  is spaced from the mounting support member  76 . The user may then insert the removable pin  216  through the holes  220  to hold or retain the user support assembly substantially parallel to the mounting support member  76  in its storage position. 
   For example, the user U may lift the outer leg structure  192  upwardly such that the elongated support member  174  pivots within the pivoted frame bracket member  182 . It may be preferable for the user U to place the hand-engaging members  208  within the J-shaped supporting elements  161  so that the user support assembly  22  is releasably secured in the storage position thereof. That way, the J-shaped supporting elements  161  may help retain the exerciser  10  in the storage position thereof. As a result, even if the removable pin  216  is removed from the pivoted frame bracket  182 , either accidentally or deliberately, the J-shaped supporting elements  161  retain the hand-engaging members  208  therein and the user seat assembly  22  of the exerciser  10  will not move out of its storage position. 
   The hand grip bar  172  may also be supported in the J-shaped supporting elements  161  or may be removed therefrom and placed onto the cover plate  74  (as shown for the arm lift unit  206  in  FIG. 14 ). 
   Once in the storage position thereof, the user U may transport the exerciser  10  to different locations of use by tilting the frame assembly  12  onto the rollers  82 . By tilting the frame assembly  12  in a direction opposed to the direction of the outward extent of the user support assembly  22  when in the operative position, the rollers  82  can support the exerciser  10  thereon so as to facilitate movement thereof. The user U may tilt the frame assembly  12  onto the rollers  82  by holding onto the first and second rigid upright support members  18 ,  20  and pulling the support members  18 ,  20  backward (toward the rollers  82 ). It may be preferable to transport the exerciser  10  with the user support assembly  22  in the storage position thereof. 
   As further shown in  FIG. 14 , once the exerciser  10  is stored in the storage position thereof, the arm lift unit  206  may be stored on the cover plate  74   
     FIGS. 15–27  show another exerciser, generally indicated at  300 , which is another embodiment of the exerciser  10  described above. In the following description of the embodiments illustrated in  FIGS. 15–27 , only the points of difference of the embodiments illustrated in  FIGS. 15–27  from the embodiment illustrated in  FIGS. 1–14  will be described. That is, in those embodiments, the constituent parts the same as those in the embodiment illustrated in  FIGS. 1–14  are referenced correspondingly in the drawings and the description about them will be omitted. The exerciser  300  operates in a substantially similar manner as the exerciser  10 , but realizes different construction. 
   The exerciser  300  comprises a frame assembly, generally indicated at  302 , having a left and right series of bungee cords  118 ,  120  each including a number of bungee cords  63 , respectively, mounted thereto to provide resilient resistance to first and second moving assemblies, generally indicated at  332 ,  334  ( FIG. 15 ), respectively, a leg-engaging unit or leg unit, generally indicated at  344  ( FIG. 15 ), a upright pull down bar unit assembly, generally indicated at  360  ( FIG. 18 ), or a pull down bar, generally indicated at  365  ( FIG. 20 ), all of which are described in greater detail below. The exerciser  300  also includes a user support assembly  322 , which is described in greater detail below. 
   The frame assembly  302  includes a lower frame portion, generally indicated at  304 , constructed and arranged to be stablely supported in an operative position on a horizontal surface and the user support assembly  322  is operatively connected with the lower frame portion  304  to support a user thereon. 
   First and second rigid upright support members  306 ,  308  are fixed at lower marginal portions  310 ,  312  thereof on the lower frame portion  304  and extend upwardly from the lower frame portion  304  when in the operative position thereof. The first and second rigid upright support members  306 ,  308  have first and second rigid upper free end portions  314 ,  316 , respectively. The upper free end portions  314 ,  316  are configured to curve or extend upwardly from the lower marginal portions  310 ,  312  thereof in outwardly diverging relation with respect to one another, similar to how upper free end portions  24 ,  26  are configured. Lower free end portions  318 ,  320  are configured to curve or extend outwardly from the lower marginal portions  310 ,  312  thereof in horizontally spaced relation with respect to one another. 
   A pair of separate moving assemblies  332 ,  334  is disposed in normal inoperative positions with respect to the user support assembly  322 . Each moving assembly  332 ,  334  is constructed and arranged to be manually engaged and individually manually moved away from the normal inoperative position thereof into a desired extended position by a user supported on the user support assembly  322 . 
   The first and second moving assemblies  332 ,  334  include first and second upper pulley members  336 ,  338  rotatably mounted on the upper free end portions  314 ,  316  of the first and second rigid upright support members  306 ,  308 , respectively. First and second lower pulley members  340 ,  342  are rotatably mounted on the lower free end portions  318 ,  320  of the first and second rigid upright support members  306 ,  308  at fixed positions below the upper pulley members  336 ,  338 , respectively. First and second flexible elongated structures, generally indicated at  344 ,  346 , are trained around the first and second upper pulley members  336 ,  338  and the first and second lower pulley members  340 ,  342 , respectively. Terminal end portions  348 ,  350  of the first and second flexible elongated structures  343 ,  346  extend downwardly from the upper pulley members  336 ,  338  toward the lower frame portion  14 . The terminal end portions  348 ,  350  can be fixedly secured to one or more end-fixing structures  352 ,  354  mounted on the lower free end portions  318 ,  320  of the first and second rigid upright support members  306 ,  308 , respectively. The end-fixing structures  352 ,  354  are constructed and arranged to prevent upward movements of the terminal end portions  348 ,  350  and in this embodiment are generally arcuate shaped although other shapes could be used as well. 
   First and second user hand grip units  56 ,  58  are connected with first and second end portions  60 ,  62  of the first and second flexible elongated structures  343 ,  346 , respectively (only the user hand grip unit  56  connected to respective end portion  60  is shown in  FIG. 25 ). The end portions  60 ,  62  are at opposite ends of the first and second flexible elongated structures  343 ,  346  as the terminal end portions  348 ,  350 . The end portions  60 ,  62  extend outwardly from the lower pulley members  340 ,  342  in positions to enable a user supported on the user support assembly  22  to move the user hand grip units  56 ,  58  away from inoperative positions thereof into desired extended positions. 
   The first and second flexible elongated structures  343 ,  346  include the left and right series of bungee cords  63 , which constitute resilient resistance structures, at the terminal end portions  348 ,  350  thereof. The bungee cords  63  resiliently resist movement of the first and second moving assemblies  332 ,  334 , the leg-engaging unit  344 , the upright pull down bar unit assembly  360  or the pull down bar  365  and the end portions  60 ,  62  of the flexible elongated structures  343 ,  346  away from the inoperative positions thereof into desired extended positions. The bungee cords  63  are further configured to resiliently return the first and second moving assemblies  332 ,  334 , the leg-engaging unit  344 , the upright pull down bar unit assembly  360  or the pull down bar  365  to the inoperative positions thereof when no longer moved by the user. 
   The lower frame assembly  304  may be formed from a rigid material, such as steel, and includes a substantially symmetrical support base  364 . The support base  364  has a generally straight central section  366  and a pair of spaced legs  368  which transversely extend from the central section  366  to provide support to the lower frame portion  304  of the exerciser  300 . A cross member  370  extends between the support legs  368  in parallel spaced relation to the central section  366  and a support brace  372  extends upward from each support leg  368  to support respective lower free end portions  318 ,  320  of the first and second rigid upright support members  306 ,  308  in order to provide additional support to the lower frame portion  304  and the lower free end portions  318 ,  320 . A cover plate (not shown), which may be made from steel, plastic, wood, such as plywood, or any other type of material, could be positioned in abutting relation to the cross member  370  so as to form a common plane therewith which substantially covers the area extending between the spaced legs  368 . As best shown in  FIG. 15 , a mounting support member  376  vertically extends from the central section  366  of the support base  364 . The mounting support member  376  has a hollow transverse cross section, preferably substantially rectangular in form so as to provide sufficient strength and support to the lower frame assembly  304  of the exerciser  300 . Other exercise components, such as the upright pull down bar assembly  360 , for example, can be positioned within the mounting support member  376  to provide added versatility to the exerciser  300 , as will be further described in detail below. 
   In the illustrated embodiment, each rigid upright support member  306 ,  308  is mounted, preferably by fasteners or bonding, such as welding, at respective lower marginal portions  310 ,  312  thereof to the mounting support member  376 . The rigid upright support members  306 ,  308  may be positioned on opposite sides of the mounting support member  376  such that the lower marginal portions  310 ,  312  thereof abut an upper portion  378  of the mounting support member  376 . 
     FIG. 15  best illustrates the first and second upper pulley members  336 ,  338  having an upper stop structure  394 ,  396 , respectively, which extends across a peripheral portion thereof. The upper stop structures  394 ,  396  rotatably mount the first and second upper pulley members  336 ,  338 , respectively on the upper free end portions  314 ,  316  of the first and second rigid upright support members  306 ,  308 . 
   The first and second flexible elongated structures  343 ,  346  further include first and second flexible elongated non-extensible elements  372 ,  374 , such as, for example, nylon cords or other flexible elongated non-extensible elements. The first and second flexible elongated non-extensible elements  372 ,  374  are trained around the lower pulley members  340 ,  342  so as to provide the first and second outwardly extending end portions  60 ,  62 , respectively, of the first and second flexible elongated structures  343 ,  346 . 
   Each non-extensible element  372 ,  374  can have a stop element in the form of looped end portions  377 ,  378 , respectively, fixed to the respective end portion  60 ,  62  thereof. Each non-extensible element  372 ,  374  interengages with the respective lower pulley members  340 ,  342  to determine the inoperative position of the first and second moving assemblies  332 ,  334 , respectively. More specifically, the stop elements  377 ,  378  cooperate with the respective lower pulley members  340 ,  342  to determine the inoperative positions of the end portions  60 ,  62  of the non-extensible elements  372 ,  374 . 
   The looped end portions  377 ,  378  are configured to connect with the first and second hand grip units  56 ,  58 , respectively. The looped end portions  377 ,  378  selectively engage a selectively connectable and disconnectable connector  406 , which is connected with the leg-engaging unit  344 , the upright pull down assembly  360  or the pull down bar  365  to provide resilient resistance thereto, as will be described in further detail below. 
   In the embodiment illustrated in  FIG. 15 , the bungee cords  63  are grouped into a first and second series of resiliently extensible bungee cords  118 ,  120  associated with the first and second moving assemblies  332 ,  334 , respectively. Each series of bungee cords  118 ,  120  may include any number of bungee cords  63 , each providing a resilient resistance. 
   In the illustrated embodiment, each series of bungee cords  118 ,  120  includes one bungee cord  63  that provides ten pounds of resistance and two bungee cords  63  that each provide twenty pounds of resistance. However, any number of bungee cords  63  may be used in each series  118 ,  120  and the bungee cords  63  can have equal or different resilient resistances so as to provide the desired resilient resistance. As shown in  FIGS. 28 ,  29  and  30  and described in greater detail below, the exerciser  300  can include an adjusting mechanism to change the resistance of each series of bungee cords  118 ,  120 . 
   Each bungee cord  63  in the first and second series  118 ,  120  has an upper end portion  122  trained around one of the upper pulley members  336 ,  338  and a lower end portion  124  fixed to the end-fixing structure  352 ,  354 , respectively. 
   As described above with respect to  FIG. 5 , upper hook connectors  126  can be fixed on the upper end portions  122  of the bungee cords  63 . The upper hook connectors  126  selectively engage with first and second connecting terminals  134 ,  136 , respectively, so that the first and second connecting terminals  134 ,  136  move substantially in the same direction when the respective moving assemblies  332 ,  334  are moved away from the normal inoperative position thereof. 
   The connecting terminals  134 ,  136  are fixedly disposed on adjacent ends  138 ,  140  of the associated non-extensible element  372 ,  374  to provide resilient resistance thereto. For example, the adjacent ends  138 ,  140  of the non-extensible elements  372 ,  374  may be fixedly disposed on the connecting terminals  134 ,  136  by a hook connector or by tying the ends  138 ,  140  around the respective connecting terminal  134 ,  136 , for example. The connecting terminals  134 ,  136  are disposed in close proximity to the associated upper stop structure  94 ,  96  when the moving assemblies  332 ,  334  are in an inoperative position thereof. 
   It may be preferable for the connecting terminals  134 ,  136  to be constructed in the form of rigid annular members, such as metal rings, but the connecting terminals  134 ,  136  could be formed into any rigid or flexible configuration capable of being engaged by the hook elements  126 . 
   As illustrated in  FIGS. 15–18  and  20 , the leg-engaging unit  344  is disposed in a normal inoperative position with respect to the user support assembly  322 . The leg-engaging unit  344  includes an movable member  345  that is pivotally attached to an outer end portion  347  of the user support assembly  322 . The movable member  345  is engaged to be moved away from the normal inoperative position thereof into a desired extended position by a user supported on the user support assembly  322 , as will be described in greater detail below. 
   A pair of horizontally aligned and fixedly spaced leg-engaging members  358 ,  360  is pivotally mounted to the movable member  345 . The leg-engaging members  358 ,  360  are pivotally movable with the movable member  345  from a normal inoperative position disposed outwardly of the user support assembly  322 . Another pair of horizontally aligned and fixedly spaced leg-engaging members  361 ,  363  are mounted to the movable member  145  above the other pair of leg-engaging members  358 ,  360  in vertically spaced relation with respect thereto. 
   In the illustrated embodiment, an outer leg portion  400  is fixedly connected to an elongated support member  402  of the user support assembly  322 . A rubber stop member  401  is mounted on the outer leg portion  400  and abuts the movable member  345  when the leg-engaging unit  344  is in the normal inoperative position thereof. A pulley member  403  is rotatably mounted to the outer leg portion  400 . An elongated flexible non-extensible element  404  has a connecting terminal  405  at one end connected to a selectively connectable and disconnectable connector  406  for selectively connecting the elongated flexible non-extensible element  404  to the looped end portions  377 ,  378 . The elongated flexible non-extensible element  404  has another end  407  connected to the movable member  345  at a connecting terminal  351 . The elongated flexible non-extensible element  404  extends away from the movable member  345  through the pulley  403  toward the looped end portions  377 ,  378 . The elongated flexible non-extensible element  404  can be secured to the elongated support member  402 , when not in use, by securing the connecting terminal  405  to structure  408  extending downwardly from the elongated support member  402 . 
   The bungee cords  63  can connect to the elongated flexible non-extensible element  404  when the selectively connectable and disconnectable connector  406  is connected to the looped end portions  377 ,  378 , for example, by a connecting terminal (similar to connecting terminal  156  shown in  FIG. 1 ). 
   As best shown in  FIGS. 18–19 , the upright pull down assembly  360  is mounted to extend upwardly from the mounting support member  376 . A centrally located upright rigid frame member  410  is disposed within the interior of the mounting support member  376  and is fixedly secured therein by welding, fasteners or any known manner such as, for example screws, nuts and bolts, friction fit, interference fit or any fastener arrangement known in the art. 
   Alternatively, the fastener arrangement may include a pin and opening arrangement whereby the pin is removable received through a pair of horizontally aligned openings (not shown) extending through the mounting support member  376  and the frame member  410 . That way, the fastener could allow optional removable attachment of the frame member  410  of the upright pull down assembly  360 . 
   The upright pull down assembly  360  is carried by the central upright rigid frame member  410  in a normal inoperative position with respect to the user support assembly  322 . An upper inclined end  412  of the upright pull down assembly  360  extends upwardly and away from the rigid frame member  410  to support a hand grip bar  172 . 
   Guide pulley members  414 ,  418  may be rotatably mounted on the upper inclined end  412  of the upright pull down bar assembly  360  to guide an elongated flexible non-extensible element  416 . The elongated flexible non-extensible element  416  extends from the hand grip bar  172  of the upright pull down bar assembly  360  and can be selectively connected to the looped end portions  377 ,  378  through a connecting terminal  425  with the selectively connectable and disconnectable connector  406 . The lower pulley members  340 ,  342  can be pivoted as shown in  FIG. 19  to allow for connection of the elongated flexible non-extensible element  416  to the looped end portions  377 ,  378  of the non-extensible elements  372 ,  374 . 
   The elongated flexible non-extensible element  416  extends downwardly from the guide pulley members  414 ,  418  along the centrally located upright frame member  410  to selectively connect to the looped end portions  377 ,  378 . 
   The manually engageable hand grip bar  172  is the same hand grip bar shown in the hand grip bar assembly  160  and may be engaged by a user and moved away from the normal inoperative position of the upright pull down assembly  360  into a desired extended position thereof by a user supported on the user support assembly  322 . 
   The upper inclined end  412  may include a pair of J-shaped supporting elements  422 , which are rigidly mounted to opposite sides thereof. The J-shaped supporting elements  422  are configured to receive and retain the hand grip bar  172  therebetween to stabilize and preclude swinging thereof when not being used. Alternatively, the J-shaped supporting elements  422  may be pivotally mounted to opposite sides of the upper inclined end  412 . 
   A stop element  424  is disposed between the latching mechanism  177  and the upper inclined end  412 . The upper inclined end  412  together with the uppermost guide pulley member  414  precludes the stop element  424  and the elongated flexible non-extensible element  416  from moving due to the resilient bias exerted by the bungee cords  63 . 
   As shown in  FIGS. 20 and 21 , a pull down bar  365  can be connected to the left and right series of bungee cords  118 ,  120 . The pull down bar  365  includes a central portion  426  having connector receiving portions  428  extending outwardly from handle portions  430  to receive the hook connectors  126  of each bungee cord  63  in the left and right series of bungee cords  118 ,  120 . 
   In  FIGS. 17 and 19 , the connector  406  is connected to the looped end portions  377 ,  378  so as to render the leg-engaging unit  344  and the upright pull down assembly  360  to have the movement thereof away from the inoperative position thereof resisted by the bungee cords  63 . That way, the bungee cords  63  may provide resistance to the movement of the leg-engaging unit  344  and the upright pull down assembly  360 . 
   As best shown in  FIGS. 15–20 , the user support assembly  322  includes the elongated support member  402 . The elongated support member  402  has one end  440  connected to the outer leg structure  400  and another end  441  connected to a pivoted frame bracket member  442 . The elongated support member  402  extends in an operative position generally horizontally outwardly from the pivoted frame bracket member  442  extending from the mounting support member  376 . The elongated support member  402  is pivotally attached to the support member  376  by a pivot pin  444 , which horizontally extends through both the elongated support member  402  and the pivoted frame bracket member  442 . 
   In the illustrated embodiment, the pivoted frame bracket member  442  provides a projecting flange  446 , which projects outwardly from the pivoted frame bracket member  442  toward the leg-engaging unit  344 , and a downwardly extending flange  448 . The pivoted frame bracket member  442  and the downwardly extending flange  446  define a pair of centrally disposed fastener-receiving holes  450 ,  452 , respectively, therein. The fastener-receiving holes  450 ,  452  can align with fastener-receiving holes (not shown) in the elongated support member  402  for removably receiving a removable fastener or pin  444  therethrough, as will be described in greater detail below. 
   In the illustrated embodiment, the user support assembly  322  includes a seat back member  456  and a user seat member  458 . The seat back member  456  can be selectively retained in a bench position extending in generally horizontally aligned relation to the user seat member  458  in an outer position thereof and an upright position extending generally inwardly in inclined relation to the user seat member  456  in an inner position thereof. 
   Alternatively, the seat back member  456  and the user seat member  458  can be fixedly connected to the elongated support member  402 . Alternatively, the exerciser  300  can use the pivoted user support assembly  122  discussed above. 
   In an alternative embodiment not shown, the elongated support member  402  may be telescopically constructed so as to permit movement of the user seat member  458  from the outer position thereof to the inner position thereof by moving the elongated support member in a telescoping manner. 
   The elongated support member  402  is pivoted at its end  460  so as to be moved between the operative position thereof and an upright storage position. In the operative position, the fastener-receiving holes in the elongated support member  402  align with the fastener-receiving holes  450  in the pivoted frame bracket member  442 . By inserting a removable pin  462  through the aligned holes, the elongated support member  402  may be releasably locked into its operative position. 
   In the storage position, the elongated support member  402 , the outer leg structure  400  and the seat back and seat members  456 ,  458  are pivoted about the end  460  so as to be positioned alongside the mounting support member  376  (and the upright frame member  410  if the upright pull down assembly is attached to the exerciser  300 ). In the storage position, the fastener-receiving holes in the elongated support member  402  align with the fastener-receiving holes  452  in the downwardly extending flange  448 . By inserting the removable pin  462  through the aligned holes, the elongated support member  402  may be releasably locked into its storage position. 
   The outer leg structure  400  is generally T-shaped with a pair of spaced ends  464  that engage and are supported on the horizontal surface in spaced relation to the frame  302 . The outer leg structure  400  is fixed, preferably by welding or fasteners, to the elongated support member  402 . The spaced ends  464  support the elongated support member  402  while the elongated support member  402  is in the generally horizontally outwardly extending relation from the pivoted frame bracket member  442  and the lower frame portion  304 . 
   Although not shown, an upper arm supporting pad (similar to pad  204  described above) could be positioned within the hollow configuration of the movable member  345  and secured thereto by a fastener. Additionally, an arm lift unit could be provided on the movable member  345  so that a user could effect arm exercises similar to those described above. 
     FIG. 28  shows an adjustment mechanism or connecting structure, generally indicated at  500 , for use with the exerciser  300  with no modification to the exerciser  300 . 
   The adjustment mechanism or connecting structure  500  includes a substantially U-shaped bracket portions  502 ,  504  which cooperate to slidably mount the adjustment mechanism or connecting structure  500  to the mounting support member  376 . Bracket portion  502 , for example, has two leg portions (not shown) which extend through openings formed in the bracket portion  504 . Fasteners  506  are secured to the leg portions in order to fixedly secure the bracket portions  502 ,  504  together. 
   End-fixing structures  508 ,  510  extend from the bracket portion  504  to receive the terminal end portions  348 ,  350  of the first and second flexible elongated structures  343 ,  346 . 
   A series of pulley members  512 ,  514  have mounting openings  516 ,  518  formed therein for receiving cooperating end-fixing structures  352 ,  354 . The series of pulley members  512 ,  514  can be rotatably mounted to the end-fixing structures  352 ,  354 . The terminal end portions  348 ,  350  extend through the series of pulley members  512 ,  514  for engagement with the end-fixing structures  508 ,  510  extending from the bracket portion  504 . 
   The adjustment mechanism or connecting structure  500  is configured to be slidably received along the mounting support member  376  in a vertical direction to change the resistance (either reduce or increase) the resistance provided by the bungee cords  63 . For example, an upward movement of the adjustment mechanism or connecting structure would cause an increase in resistance provided by the bungee cords while a downward movement would cause a decrease in the resistance. 
   Because the end-fixing structures  508 ,  510  carry the terminal end portions  348 ,  350  as the adjustment mechanism or connecting structure  500  is moved along the mounting support member  376 , the resistance provided by the bungee cords  63  can be changed. 
   The operation of the exerciser  300  is identical with or without the adjustment mechanism or connecting structure  500 , but with the adjustment mechanism or connecting structure  500  resistance adjustment can be realized. 
   In the following description of the embodiments illustrated in  FIGS. 29–30 , only the points of difference of the embodiments illustrated in  FIGS. 29 and 30  from the embodiment illustrated in  FIGS. 15–28  will be described. 
     FIG. 29  shows an exerciser  600  having lower pulley members  602 ,  604  which differ from lower pulley members  340 ,  342  described above. The pulley members  602 ,  604  are configured to receive each bungee cord  63 , after each bungee cord has been trained about the upper pulley members  336 ,  338 . By “pre-loading” the bungee cords  63  by training the bungee cords  63  over the upper pulley members  336 ,  338 , the resistance provided by those bungee cords will be increased over the resistance provided in exerciser  300 . 
   The operation of the exerciser  600  is identical to the operation of the exerciser  300  with or without the adjustment mechanism or connecting structure  500 . However, when connecting the hand grips  56 ,  58 , the leg-engaging unit  344 , the pull down assembly  360  or the pull down bar  365  to exerciser  600 , the bungee cords  63  will be selectively connected to theses exercising assemblies through the connecting terminals  134 ,  136  instead of through the looped end portions  377 ,  378  of exerciser  300 . 
   Although exercisers  500  and  600  are described as separate embodiments herein, it is possible to replace the lower pulley members  340 ,  342  of exerciser  500  with the lower pulley members  602 ,  604  of exerciser  600 . Additionally, the bungee cords  63  could be “pre-loaded” as described above when the lower pulley members  602 ,  604  replace the lower pulley members  340 ,  342 . 
     FIG. 30  shows the exerciser  600 , but with end-fixing structures  606 ,  608  extending from the mounting support member  376  to receive the terminal end portions  348 ,  350  of the first and second flexible elongated structures  343 ,  346 . The end-fixing structures  606 ,  608  are aligned in series along the mounting support member  376 . 
   The pulley members  602 ,  604  receive each bungee cord  63 , after each bungee cord has been trained about the upper pulley members  336 ,  338 , so that the bungee cords  63  are “pre-loaded” as shown in  FIG. 29 . The end-fixing structures  606 ,  608  provide additional adjustment by allowing for the terminal end portions  348 ,  350  to be selectively received by the end-fixing structures  606 ,  608 . 
   Positioning the terminal end portions  348 ,  350  on the uppermost end-fixing structures  606 ,  608  will provide the greatest resistance, while positioning the terminal end portions  348 ,  350  on the lowermost end-fixing structures  606 ,  608  will provide the least resistance. In some situations, it may be preferable to have different resistances for each terminal end portion  348 ,  350 . In this case, terminal end portion  348  could be positioned on the uppermost end-fixing structure  606  while terminal end portion  350  be positioned on the lowermost end-fixing structure  608 . Accordingly, the left and right series of bungee cords, will provide different resistances to the exercising assembly attached thereto. 
   Operation 
   In  FIGS. 22–27 , a user U is shown schematically. Motions of the user&#39;s arms, legs, or body, as well as motions of the moveable parts of the exerciser  300  are illustrated by broken lines. Resistance is provided by the resilient bungee cords  63  and can be adjusted to suit the user&#39;s requirements and physical abilities, as described above. Various exercises are described below in connection with different positions of the user. 
   Before certain hand, arm or chest exercises can be performed, each hand grip unit  56 ,  58 , the pull down bar  365  or the upright pull down assembly  360  must be attached to the respective moving assembly  332 ,  334 . To attach the hand grip units  56 ,  58 , the user U latches each hand grip unit  56 ,  58  to either the respective looped end portion  377 ,  378 . To attach the pull down bar  365 , the user U connects one or more bungee cords  63  to the connector receiving portions  428  of the pull down bar  365 . To attach the upright pull down assembly  360 , the user U secures the centrally located upright rigid frame member  410  within the interior of the mounting support member  376  and connects the elongated flexible non-extensible element  416  to the looped end portions  377 ,  378  with connector  406 . 
   The exercises illustrated in  FIGS. 22–27  are performed with the user support assembly  322  in the outside position thereof. The exerciser  300 , however, enables the user U to execute a variety of physical exercises with the user support assembly  122  in the upright or inside position thereof as described above. 
   The hand grip units  56 ,  58  are identical in construction and operation, therefore only the operation of the hand grip unit  56  will be described below. 
   After latching the hand grip unit  56  to the looped portion  377 , the user U may perform various arm, chest and shoulder exercises therewith by moving the hand grip unit  56  away from the lower pulley member  340 . 
   As shown in  FIG. 22 , the first connecting terminal  134  is connected with the flexible elongated non-extensible element  372  via the upper hook element  126  of each bungee cord  63 . That way, the first connecting terminal  134  and the flexible elongated non-extensible element  372  move substantially in the same direction when the moving assembly  332  is moved away from the normal and operative position thereof. Particularly, as the hand grip unit  56  is moved away from the lower pulley member  340 , the terminal end portions  348 ,  350  are prevented from moving upward by end-fixing structures  352 ,  354 , which in turn, allows the moving assembly  332  to be manually moved downwardly away from the normal inoperative position thereof. 
   The bungee cords  63  may be constructed so to provide resilient resistance throughout the operative extent thereof to the movement of the first and second moving assemblies  332 ,  334  away from the inoperative positions thereof. 
   Without sufficient manual force on the hand grip unit  56  away from the lower pulley  340 , the bungee cords  63  provide a resilient bias throughout the operative extent thereof. The resilient bias of the bungee cords  63  will move the moving assembly  332  toward the normal inoperative position thereof until the looped end portion  377 ,  378  abuts the lower pulley member  340 ,  342 . 
   During various exercises, as will be described in greater detail below, it may be preferable for the user U to maintain manual force on the hand grip unit  56  away from the lower pulley member  340 . That way, the bungee cords  63  provide continuous resilient resistance to the exercised muscle throughout the exercise. 
   The operation of the leg-engaging unit  344  will now be described ( FIG. 22 ). To prepare the leg-engaging unit  344  for certain leg exercises, the user U connects the looped end portions  377 ,  378  to the connecting terminal  405  with connector  406  so that the bungee cord  63  may provide resilient resistance to the leg-engaging unit  344 . The looped end portions  377 ,  378  and the connecting terminal  405  move together as the leg-engaging unit  344  is moved into its extended position. 
   Movement of the leg-engaging unit  344  away from the inoperative position thereof causes the connecting terminal  405  to move away from the first and second connecting terminals  134 ,  136 . Thus, enabling the bungee cords  63  connected to the first and second connecting terminals  134 ,  136  to provide resilient resistance throughout the operative extent thereof to the movement of the leg-engaging unit  344  away from the inoperative position thereof. 
   As the leg-engaging unit  344  is moved towards its extended position, the movable member  345  is pivoted about the outer end portion  440  of the elongated support structure  402 . The flexible non-extensible element  404  is trained around the pulley  403  so as to allow the leg-engaging unit  344  to move smoothly from the normal inoperative position thereof into the desired extended position thereof. In the extended position, the movable member  345  is disposed in generally substantially parallel relation with respect to the horizontal surface. 
   The operation of the upright pull down assembly  360  will now be described ( FIGS. 18 ,  19  and  24 ). 
   When the user U connects the elongated flexible non-extensible element  416  to the looped end portions  377 ,  378  with connector  406 , the resilient bias of the bungee cords  63  causes the stop element  175  positioned on the flexible non-extensible element  416  to abut against the uppermost guide pulley  414  and the inclined portion  412 . When moved away from the normal inoperative position thereof, the manually engageable hand grip bar  172  is moved toward a desired extended position thereof by manual force exerted by a user U supported on the user support assembly  322  or standing nearby. As the hand grip bar  172  is moved away from its normal inoperative position and toward its desired extended position, the bungee cords  63  provide resilient resistance to the movement thereof as the hand grip bar  172  is moved. The stop element  175  and the latching mechanism  177  move together with the hand grip bar  172  as the hand grip bar  172  is moved away from its normal inoperative position. 
   The operation of the pull down bar  365  will now be described ( FIGS. 20–21  and  23 ). 
   When the user U connects one or more bungee cords  63  to the connector receiving portions  428  of the pull down bar  365 , the resilient bias of the bungee cords  63  is transferred to the pull down bar  365 . When moved away from the normal inoperative position thereof, the pull down bar  365  is moved toward a desired extended position thereof by manual force exerted by a user U supported on the user support assembly  322  or standing nearby. As the pull down bar  365  is moved away from its normal inoperative position and toward its desired extended position, the bungee cords  63  provide resilient resistance to the movement thereof as the pull down bar  365  is moved. 
   The operation of exerciser  300  has been fully described above, however, to show the versatility of the exerciser  300  various exercise examples will be described in greater detail below. 
   Although exercises can be performed individually or successively, it is contemplated that the exercises described herein may be performed in any sequence. An exemplary workout having a particular exercise sequence is described below, but more or less exercises can be performed at the user&#39;s discretion. 
     FIG. 22  shows a user U performing a leg-extension exercise. To effect this exercise, the user U could straddle the user seat member  458  with his/her feet so as to face the leg-engaging unit  344 . The user&#39;s lower legs (i.e., their shins) engage the leg-engaging members  358 ,  360  and the user&#39;s upper legs (i.e., the back of their knees) engage the leg-engaging members  361 ,  363  that are mounted to the outer end portion  347  of the user support assembly  322 . The user U may then be seated on the user seat member  458  such that the user&#39;s upper legs rest on the leg-engaging members  361 ,  363 . 
   From this position, the user U may easily access the leg-engaging unit  344  to perform a leg extension exercise or a leg-curl exercise, as best shown in  FIG. 22 . 
   To perform the leg extension exercise, the user U extends his/her legs forwardly and outwardly from the outer leg structure  400  until his/her legs are substantially parallel with the elongated support member  402  and the horizontal surface. This movement causes the leg-engaging members  358 ,  360  of the leg-engaging unit  344  to move from the normal operative position thereof into the desired extended position thereof and provides resilient resistance to the user&#39;s legs, especially their quadriceps muscle. While performing a leg extension exercise, the user U may hold onto the seat back member  456  or user seat member  458  for additional support. 
   After the leg extension exercise, the user U may perform the leg-curl exercise as described above, but with his/her legs (i.e., their calves) engage the leg-engaging members  361 ,  363  instead of the leg curl members  152 ,  154  described above. 
   After finishing the leg extension or leg curl exercise, the user U is finished with the leg-engaging unit  344  in the exemplary workout. 
   As shown in  FIGS. 25–27 , the hand grip units  56 ,  58  are latched to the looped end portions  377 ,  378 , respectively. The user support assembly  322  is in its inline bench position thereof or outer position thereof so that the user seat member  458  and the seat back member  456  are substantially parallel to the horizontal surface. 
   The user U may perform various arm, chest and shoulder exercises using the hand grip units  56 ,  58 . For example, a bicep curl is shown in  FIG. 25  and may be performed by the user U when he/she is standing above the seat back member  456  with his/her feet straddling the seat back member  456  so as to face the rigid upright support members  306 ,  308 . The user U grasps the hand grip units  56 ,  58  so that his/her arms are fully extended downwardly and his/her palms face the rigid upright support members  306 ,  308 . Then, the user U would bend his/her arms upwardly at his/her elbows so that the hand grip units  56 ,  58  would be pulled toward his/her shoulders. The bungee cords  63  resiliently resist this upward movement to exercise the bicep muscle of the user&#39;s arm. 
   As shown in  FIG. 26 , a military or shoulder press may be performed to exercise the arms and shoulders of the user U. First, the user U repositions himself/herself so as to be facing the leg-engaging unit  344  in a seated position on the seat back member  456 . Then, the user U grasps the hand grip units  56 ,  58  with an over the handle grip and bends his/her arms so to position them laterally and inline with his/her shoulders with his/her palms face upwardly. The user U would then extend the hand grip units  56 ,  58  above his/her head so to extend his/her arms against the resistance of the bungee cords  63 . 
   As best shown in  FIG. 27 , a bench press exercise and/or a chest fly exercise may be performed to exercise certain arm, chest and shoulder muscles. The chest fly exercise may be performed with the user U in a seated position on the user support assembly  322  facing the leg-engaging unit  344 . To perform the chest fly exercise, the user U would grasp the hand grip units  56 ,  58  and laterally extend his/her arms so that the hand grip units  56 ,  58  are extended away from his/her chest. Then, the user U moves the hand grip units  56 ,  58  in an forwardly arcuate, sweeping motion so as to bring the hand grip units  56 ,  58  together in front of his/her chest against the resilient resistance of the bungee cords  63 . The user U would resist the resilient bias of the bungee cords  63  as he/she move his/her arms back to the laterally extended position in a rearwardly arcuate, sweeping motion. 
   Another exercise that may be performed with the user U sitting in the user seat assembly  322  is a bench press exercise, which exercises the arms and chest of the user U. The user U would grasp the hand grip units  56 ,  58  with an over the hand grip and bends his/her arms so to position them laterally and inline with his/her shoulders with his/her palms face forwardly. The user U would then extend the hand grip units  56 ,  58  forwardly away from his/her chest so to extend his/her arms against the resistance of the bungee cords  63 . 
   To perform arm, chest and shoulder exercises with the upright pull down assembly  360 , the user U may connect the latching mechanism  177  through the opening  173  in the hand grip bar  172  to secure the hand grip bar  172  to the elongated flexible non-extensible element  416 . Alternatively, the user U may remove the hand grip bar  172  from the J-shaped supporting elements  422 , if the hand grip bar  172  is already connected to the upright pull down assembly  360 . 
   As best shown in  FIG. 24 , the user U may sit in a seated position on the seat back member  456  so as to face the rigid upright support members  306 ,  308 . In this seated position, the user U may perform a lat pull down or other arm pull down exercise, where the user U grasps the hand grip bar  172 , slightly leans toward the leg-engaging unit  344 , and pulls the hand grip bar  172  towards his/her chest or abdomen. Alternatively, another pull down exercise can be performed by the user U sitting vertically on the seat back member  456  and pulling the hand grip bar  172  toward the back of his/her neck. The user U may also perform the lat pull down exercise while facing the leg-engaging unit  344  in this seated position. 
   In the exemplary workout, the user U may then sit up from his/her seated position on the seat back member  456  so as to stand above the user seat member  458  with his/her feet straddling the user seat member  458 , facing the rigid upright support members  306 ,  308 . To perform the tricep pull down exercise (not shown), the user U manually grasps the hand grip bar  172  with an over the handle grip so that the user&#39;s arms are bent at an angle equal to or less than 90 degrees. As the user extends his/her arms downwardly so as to straighten his/her arms, the hand grip bar  172  is moved from the normal inoperative position thereof to the extended position thereof against the resilient resistance of the bungee cords  63  to exercise the user&#39;s triceps muscle. 
   To perform arm, chest and shoulder exercises with the pull down bar  365 , the user U may connect the pull down bar  365  to the bungee cords  63  as described above. As best shown in  FIG. 23 , the user U may sit in a seated position on the seat back member  456  so as to face the rigid upright support members  306 ,  308 . In this seated position, the user U may perform arm pull down exercises, where the user U grasps the handle portions  430  of the pull down bar  365 , slightly leans toward the leg-engaging unit  344 , and pulls the pull down bar  365  towards his/her chest or abdomen. 
   Alternatively, another pull down exercise can be performed by the user U sitting vertically on the seat back member  456  and pulling the pull down bar  365  toward the back of his/her neck. The user U may also perform a lat pull down exercise while facing the leg-engaging unit  344  in this seated position. As with the upright pull down assembly  360 , a tricep pull down exercise, as described above, can be effected with the pull down bar  365 . 
   It may be preferable for the exerciser  300  to be stored in the storage position thereof after the user U completes his/her workout ( FIGS. 31–33 ). In this case, the user U might remove the removable pin  462  from the holes  450 . Then, the user U pivots the user support assembly  322  with respect to the frame assembly  302  about the pivoted frame bracket member  446 . This pivotal movement positions the user support assembly  322  substantially parallel to the mounting support member  376  such that the user support assembly  322  is spaced from the mounting support member  376 . The user may then insert the removable pin  462  through the holes  448  to hold or retain the user support assembly substantially parallel to the mounting support member  376  in its storage position. 
   For example, the user U may lift the outer leg structure  400  upwardly such that the elongated support member  402  pivots within the pivoted frame bracket member  446 . The hand grip bar  172  may also be supported in the J-shaped supporting elements  422  if needed or may be removed therefrom. 
   While the principles of the invention have been made clear in the illustrative embodiments set forth above, it will be apparent to those skilled in the art that various modifications may be made to the structure, arrangement, proportion, elements, materials, and components used in the practice of the invention. 
   It will thus be seen that the objects of this invention have been fully and effectively accomplished. It will be realized, however, that the foregoing preferred specific embodiments have been shown and described for the purpose of illustrating the functional and structural principles of this invention and are subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.