Abstract:
An exercise apparatus for providing multi-directional training to the body of a user is disclosed. The exercise apparatus allows the user to exercise the mid-section, hips, legs, ankles and connective tissues enjoining all the muscles in these areas. The exercise apparatus comprises a support, two foot platforms, and means for attaching the foot platforms to the support. The exercise apparatus is designed to be free standing or to be mounted onto other supporting structures. The apparatus has multiple interchangeable parts, attachments and accessories for allowing several types of exercises.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is based upon U.S. provisional patent application Ser. No. 61/293,234, filed Jan. 8, 2010, and U.S. provisional patent application Ser. No. 61/367,538, filed Jul. 26, 2010, and is a continuation-in-part of co-pending U.S. patent application Ser. No. 12/785,658, filed May 24, 2010, which in turn is a divisional of U.S. patent application Ser. No. 12/287,731, filed Oct. 14, 2008, now U.S. Pat. No. 7,722,514, each of which is incorporated herein by reference in its entirety. 
     
    
     FIELD OF INVENTION 
       [0002]    The present invention relates to an exercise apparatus and more specifically to a multi-attachment exercise apparatus with interchangeable and adjustable parts for multi-directional training of the user. 
       BACKGROUND OF THE INVENTION 
       [0003]    The human body moves in multi-planar directions and incorporates a multitude of muscles all working in combination simultaneously in almost all aspects of life. Strength, mobility, flexibility, cardio-conditioning, balance, muscle awareness, and coordination are all important during daily life, particularly in the area of sports conditioning and movement but also in normal human activities found in everyday life, such as loading groceries into a car, walking the dog on a slippery sidewalk in the snow, raking leaves, etc. Existing exercise devices do not allow the user to train all these aspects simultaneously even though we live in a world that requires such skills. 
         [0004]    Existing swing training fitness devices are designed to simulate the walking patterns of a user. They are limited in their functionality and are usually fixed in a single use design. They swing forward and backward in an arced path, with the user standing on two pedals attached to two solid bars with a pivot point at about waist height and usually with the other end of each bar above the pivot point for the user to hold onto. As the user swings each leg alternatively forward and backward, the user&#39;s legs simulate a walking pattern. Such a device can be used for a cardio exercise, but it provides very limited strength to the user. Exercises particularly in the mid-section, hips, legs, ankles, and the connective tissues enjoining all of muscles in these areas are not provided by the existing fitness devices. Further, the training and coordination of the lower body in conjunction with the upper body is not served by these products. 
       SUMMARY OF THE INVENTION 
       [0005]    The purpose of the present invention is to provide an exercise apparatus for allowing multi-planar and multi-directional training to the body of a user, wherein the exercise apparatus comprises a main frame, a plurality of foot platforms, and means for attaching the foot platforms to the main frame. The main frame further comprises a holding bar and a plurality of support bars. The main frame may be supported by a stand or a rigid surface. 
         [0006]    It is an object of the present invention to provide an exercise apparatus which allows a user to exercise mid-section, hips, legs, ankles, and the connective tissues enjoining all of the muscles in these areas. 
         [0007]    It is further an object of the present invention to provide an exercise apparatus to allow for training and coordination of the mid-section, hips, legs, ankles with the upper body of the user for better strength, mobility, flexibility, cardio-conditioning, balance, muscle awareness, and coordination. 
         [0008]    It is further an object of the present invention to provide an exercise apparatus to allow rotational and multi-directional ankle training. 
         [0009]    It is further an object of the present invention to provide an exercise apparatus which can be mounted on devices having attachment means and a supporting frame. 
         [0010]    It is further an object of the present invention to provide a stand or support upon which an exercise apparatus can be mounted, thereby making it a stand-alone product. 
         [0011]    It is further an object of the present invention to provide an exercise apparatus which has multiple interchangeable parts, attachments, and accessories allowing for various upper and lower body applications to be performed. 
         [0012]    These objects, as well as other objects which will become apparent from the discussion that follows, are achieved, in accordance with the present invention. 
         [0013]    In one embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns, comprises:
       a support including two or more connecting points;   two elongate foot platforms adapted to be attached to and hang from said connecting points in substantially parallel side by side arrangement, each of said foot platforms being adapted for movement in a substantially horizontal X-Y plane with at least two degrees of freedom; and   at least one elongate hanging member, connecting each of said foot platforms to at least one of said connecting points on said support, allowing said movement of said foot platforms in said X-Y plane with said at least two degrees of freedom.       
 
         [0017]    In another embodiment of the invention, one or both foot platforms each have a vibratory mechanism to vibrate the bottom of a user&#39;s foot. 
         [0018]    In another embodiment of an exercise apparatus of the invention, a controller is positioned on the support, and frequency and duration of vibration are controlled by the controller. 
         [0019]    In another embodiment of an exercise apparatus of the invention, the at least one hanging member is adjustable in length. 
         [0020]    In another embodiment of an exercise apparatus of the invention, the exercise apparatus further comprises at least one connecting member extending from one foot platform to the other foot platform. 
         [0021]    In another embodiment of an exercise apparatus of the invention, at least one connecting member is elastic, non-elastic, or a combination thereof. 
         [0022]    In another embodiment of an exercise apparatus of the invention, the exercise apparatus comprises two hanging members for attaching opposite sides of each foot platform to said support. 
         [0023]    In another embodiment of an exercise apparatus of the invention, the hanging member is a tension element selected from the group consisting of a chain, a band, a rod, a tube, a strap, a cable and a combination of at least two such tension elements. 
         [0024]    In another embodiment of an exercise apparatus of the invention, the tension element is non-elastic. 
         [0025]    In another embodiment of an exercise apparatus of the invention, at least a portion of the tension element is elastic, thereby supporting the foot platform with a third degree of freedom. 
         [0026]    In another embodiment of an exercise apparatus of the invention, the tension element is flexible. 
         [0027]    In another embodiment of an exercise apparatus of the invention, the support is substantially C-shaped and arranged in a substantially horizontal plane. 
         [0028]    In another embodiment of an exercise apparatus of the invention, the support comprises two substantially U-shaped sections arranged in a substantially horizontal plane. 
         [0029]    In another embodiment of an exercise apparatus of the invention, the support is substantially vertical. 
         [0030]    In another embodiment of an exercise apparatus of the invention, a hanging member for attaching the foot platform to the support comprising a holding bar which has a ring at one end adapted to slide over the support to form a connecting point. 
         [0031]    In another embodiment of an exercise apparatus of the invention, a hanging member for attaching the foot platform to the support has a clip at one end for attachment to the support at a connecting point. 
         [0032]    In another embodiment of an exercise apparatus of the invention, a hanging member is easily detachable from the support. 
         [0033]    In another embodiment of an exercise apparatus of the invention, the connecting points are adapted to attach at least one fitness accessory to the support. 
         [0034]    In another embodiment of an exercise apparatus of the invention, the exercise apparatus further comprises an ankle training accessory, adapted to be attached to the foot platform. 
         [0035]    In another embodiment of an exercise apparatus of the invention, the ankle training accessory is a circular pivot plate, a half ball, a rotatable disc, or a longitudinally extending member. 
         [0036]    In another embodiment of an exercise apparatus of the invention, the foot platform is centrally attached to allow it to rock up and down, thereby providing ankle training. 
         [0037]    In another embodiment of an exercise apparatus of the invention, an exercise apparatus described herein can be mounted on a stand or other structural support such as a wall mount or larger exercise apparatus. 
         [0038]    In another embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns comprises:
       a support including two or more connecting points and comprising two sections that can be separated, wherein one section of the support can be moved relative to the other section;   two foot platforms adapted to be attached to and hang from said connecting points in substantially parallel side by side arrangement, each of said foot platforms being adapted for movement in a substantially horizontal X-Y plane with at least two degrees of freedom; and   at least one elongate hanging member, connecting each of said foot platforms to at least one of said connecting points on said support, allowing said movement of said foot platforms in said X-Y plane with said at least two degrees of freedom.       
 
         [0042]    In another embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns comprises:
       a support including two or more connecting points;   two elongate foot platforms adapted to be attached to and hang from said connection points in substantially parallel side by side arrangement, each of said foot platforms being adapted for movement in a substantially horizontal X-Y plane with at least two degrees of freedom;   at least one elongate hanging member, connecting each of said foot platforms to at least one of said connecting points on said support, allowing said movement of said foot platforms in said X-Y plane with said at least two degrees of freedom; and   at least one limiter to limit the swinging or rotational movement of an upper portion of each hanging member.       
 
         [0047]    In another embodiment of an exercise apparatus of the invention, the angle of rotation of the upper end of the hanging member is limited. 
         [0048]    In another embodiment of an exercise apparatus of the invention, the limiter is mechanical, hydraulic, or electrical. 
         [0049]    In another embodiment of an exercise apparatus of the invention, the hanging member is rigid or substantially rigid. 
         [0050]    In another embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns comprises:
       a support including two or more connecting points;   two elongate foot platforms adapted to be attached to and hang from said connecting points in substantially parallel side by side arrangement, each of said foot platforms being adapted for movement in a substantially horizontal X-Y plane with at least two degrees of freedom and wherein said foot platforms each have multi-directional wheels, rollers, or castors to support the foot platform; and   at least one elongate hanging member, connecting each of said foot platforms to at least one of said connecting points on said support, allowing said movement of said foot platforms in said X-Y plane with said at least two degrees of freedom.       
 
         [0054]    In another embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns comprises:
       a support including two or more connecting points;   two elongate foot platforms adapted to be attached to and hang from said connecting points in substantially parallel side by side arrangement, each of said foot platforms being adapted for movement in a substantially horizontal X-Y plane with at least two degrees of freedom and wherein said foot platforms each have multi-directional wheels, rollers, or castors to support the foot platform;   at least one elongate hanging member, connecting each of said foot platforms to at least one of said connecting points on said support, allowing said movement of said foot platforms in said X-Y plane with said at least two degrees of freedom; and   a base comprising at least one contoured surface upon which the wheels of the foot platforms can move with at least two degrees of freedom.       
 
         [0059]    In another embodiment of an exercise apparatus of the invention, the base comprises two or more sections that fit together. 
         [0060]    In another embodiment of an exercise apparatus of the invention, the contoured surfaces form an upwardly turned saucer shape. 
         [0061]    In another embodiment of an exercise apparatus of the invention, the contoured surfaces form a pipeline shape. 
         [0062]    In another embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns comprises: 
         [0063]    a support for a user to grip; and 
         [0064]    a base comprising at least two longitudinally extending members, foot platforms, and support members supporting the foot platforms and being slidable within or on the longitudinally extending members, wherein the foot platforms are slidable substantially horizontally on the support members, to provide at least two degrees of freedom. 
         [0065]    In another embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns comprises:
       a support for a user to grip; and   a base comprising at least two longitudinally extending members, foot platforms, and support members supporting the foot platforms and being slidable within or on the longitudinally extending members, wherein the foot platforms are slidable substantially horizontally on the support members, to provide at least two degrees of freedom.       
 
         [0068]    In another embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns comprises:
       a base comprising at least two longitudinally extending members, foot platforms, and support members supporting the foot platforms and being slidable within or on the longitudinally extending members, wherein the foot platforms are slidable substantially horizontally on the support members, to provide at least two degrees of freedom.       
 
         [0070]    In another embodiment of an exercise apparatus of the invention, three longitudinally extending members extend longitudinally. 
         [0071]    In another embodiment of an exercise apparatus of the invention, two longitudinally extending members extend laterally. 
         [0072]    In another embodiment of an exercise apparatus of the invention, each longitudinally extending member comprises two sections that have a hinge connector. 
         [0073]    In another embodiment of an exercise apparatus of the invention, each section has means for raising or lowering the section. 
         [0074]    In another embodiment of an exercise apparatus of the invention, each section has a concave upper surface. 
         [0075]    In another embodiment of the invention, an exercise apparatus for training the body of a user in multi-directional patterns comprises:
       a support including two or more connecting points;   two elongate foot platforms adapted to be attached to and hang from said connecting points in substantially parallel side by side arrangement, each of said foot platforms being adapted for movement in a substantially horizontal X-Y plane with at least two degrees of freedom; and   at least one elongate hanging member, connecting each of said foot platforms to at least one of said connecting points on said support, allowing said movement of said foot platforms in said X-Y plane with said at least two degrees of freedom.       
 
         [0079]    In another embodiment of the invention, in an improved exercise apparatus comprising foot platforms suspended from a support bar, the improvement for training the body of a user in multi-directional patterns, which comprises:
       support including two or more connecting points;   two elongate foot platforms adapted to be attached to and hang from said connecting points in substantially parallel side by side arrangement, each of said foot platforms being adapted for movement in a substantially horizontal X-Y plane with at least two degrees of freedom; and   at least one elongate hanging member, connecting each of said foot platforms to at least one of said connecting points on said support, allowing said movement of said foot platforms in said X-Y plane with said at least two degrees of freedom.       
 
         [0083]    The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of the invention as illustrated in the accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0084]      FIG. 1 , comprising  FIGS. 1   a - 1   d , depicts an exercise apparatus  100  with its basic parts. 
           [0085]      FIG. 2 , comprising  FIGS. 2   a  and  2   b , depicts the exercise apparatus  100  with an attachment for upper body workout. 
           [0086]      FIG. 3  depicts an upper body bicycle attachment for the exercise apparatus. 
           [0087]      FIG. 4 , comprising  FIGS. 4   a - 4   d , depicts various clip-ons for the foot platforms. 
           [0088]      FIG. 5 , comprising  FIGS. 5   a - 5   e , depicts an exercise apparatus and portions thereof. 
           [0089]      FIG. 6 , comprising  FIGS. 6   a - 6   d , depicts another embodiment of an exercise apparatus according to the inventions. 
           [0090]      FIG. 7 , comprising  FIGS. 7   a - 7   d , depicts pivot point structures that regulate resistance and limit swinging movement of the hanging members and foot platforms. 
           [0091]      FIGS. 8 ,  9   a , and  9   b  each depict another embodiment of an apparatus according to the invention. 
           [0092]      FIG. 10 , comprising  FIGS. 10   a  and  10   b , depicts an embodiment of an exercise apparatus according to the invention where a base with contoured surfaces comprises a skate platform. 
           [0093]      FIG. 11  depicts an embodiment of an exercise apparatus according to the invention where upper body exercisers are positioned on a crossbar. 
           [0094]      FIG. 12  depicts an embodiment of an exercise apparatus according to the invention with different support arms and hanging members. 
           [0095]      FIG. 13 , comprising  FIGS. 13   a  to  13   d , depicts an embodiment of an exercise apparatus according to the invention with upper body systems where the resistance is regulated and the swinging movement is limited by servo motors and magnets. 
           [0096]      FIG. 14  depicts an embodiment of an exercise apparatus according to the invention where elements can be adjusted to accommodate users of different dimensions. 
           [0097]      FIGS. 15 to 20  depicts other embodiments of an exercise apparatus according to the invention where foot platforms are supported by a base. 
           [0098]      FIG. 21  depicts a representation of a foot platform according to the invention that is useful in embodiments such as those shown in  FIGS. 15 to 20 . 
           [0099]      FIGS. 22-27  depict other embodiments of the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0100]    The preferred embodiments of the present invention will now be described with reference to  FIGS. 1-21  of the drawings. Identical elements in the various figures are designated with the same reference numerals. 
         [0101]    Embodiments of the present invention provide an exercise apparatus for multi-directional and multi-planar training of the body of the user. In the description of the present invention, numerous specific details are provided, such as examples of components and/or mechanisms, to provide a thorough understanding of the various embodiments of the present invention. One skilled in the relevant art will recognize, however, that an embodiment of the present invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention. 
         [0102]      FIG. 1   a  illustrates an exercise apparatus  100  along with its various parts. The exercise apparatus  100  consists of a main frame  10  which supports foot platforms  20  substantially in parallel by means of hanging members or elements  30 , such as chains, cables, ropes, bands, or rods. The main frame  10  comprises a C-shaped holding bar  12  and support bars  14 . The holding bar  12  of the main frame  10  is attached to the support bars  14 . The user steps on the foot platforms  20  and holds the holding bar  12  when commencing a workout. The support bars  14  are adapted to be attached to a mounting support, such as a wall or floor, with the aid of mounting means. The mounting support can be a wall, or a separate stand, or any supporting frame such as a SUPERCELL™ exercise system available commercially from Vortex Fitness Equipment of Wilmington, Del. 
         [0103]    The hanging elements  30  used to attach the foot platforms  20  to the main frame  10  are adapted for moving in multiple directions, with two degrees of freedom in an X-Y plane, thereby allowing the user to train his/her body in multi-directional patterns for better strength, mobility, flexibility, cardio-conditioning, balance, muscle awareness and coordination. Multiple connection points  40  on the holding bar  12  permit adjustment of the distance between the foot platforms  20 , and also permit the foot platforms  20  to be suspended at a slight angle (away from strictly parallel) to accommodate “pigeon toed” users and the like. Further, additional connection points  40  could be positioned vertically to raise or lower hanging elements  30  and/or to raise or lower ends of platforms  20 , whereby the platforms  20  are raised, lowered, and/or tilted. Optionally, holding bar  12  can be rotatably held at the ends of support bars  14  with a mechanical arrangement, such as a pop pin arrangement, so that holding bar  12  can be tilted up or down and locked in position, as shown in  FIG. 14 . 
         [0104]    The holding bar  12  has swivel snap hooks or clips  42  which are further attached to a carabiner  44  to lock the links of one end of the hanging elements  30 . A snap hook or the carabiner  44  can be used to adjust the length of each respective hanging element  30 . On the other end of the hanging elements  30 , bungee cords or similar elastic members  50  can be attached to connect the hanging elements  30  to foot platforms  20 . This gives the platform an additional degree of freedom of movement, in the vertical or “Z” direction, enabling the user to bounce up and down. Alternatively, non-elastic members  50  can be used to connect the foot platforms  20  to the hanging elements  30 . 
         [0105]    In another embodiment only the carabiner  44  can be used to lock the links of the hanging elements  30 . The present invention contemplates the use of swivel snap hooks  42 , whereas other types of hooks or connecting means can be used without altering the scope of the invention. 
         [0106]    In an optional embodiment of the invention, to limit the relative spacing of platforms  20 , at least one member  16 , preferably one or two, extends between platforms  20 . Each member  16  is attached to a platform  20  at an attachment point  18 . A member  16  comprises elastic, for example, a spring or band, or non-elastic material of a length of from about 15 to about 45 cm. 
         [0107]    In another embodiment the hanging elements  30  are slidably attached to the main frame  10  as illustrated in  FIG. 1   b . Ring members  46  can be used to attach the hanging elements  30  to the holding bar  12 , thereby allowing the user to adjust the points of attachment of the hanging elements  30  to the most comfortable position. 
         [0108]    In still another embodiment, the holding bar  12  is provided with various connecting elements  48  to allow the user to attach the hanging elements  30  at specific points on the holding bar  12  as illustrated in  FIG. 1   c.    
         [0109]    In still another embodiment, provisions  70  are made on the support bars  14  of the main frame  10  for accommodating crossbars  60  or similar structures as illustrated in  FIG. 1   d . The crossbars are affixed to the support bars by means of pop pins  64 , or the like. Various accessories can be attached to the crossbars  60  to facilitate several types of workouts. 
         [0110]    One such accessory can be a detachable device for upper body training as illustrated in  FIG. 2   a . This accessory allows the user to train the upper body either in unison or in isolation to the lower body. The attachment includes two horizontal handles mounted on an upright bar  80 , the bottom end of which is pivotally mounted on a crossbar  60  fitted between the support bars  14  of the main frame  10 . The bar  80  is lockable in a fixed upright position, or in any one of several different tilted positions, but when unlocked it can tilt freely in any direction. Bar  80  may end in a ball in socket  72  so that bar  80  can be rotated or pivoted in all directions. 
         [0111]    With the attachment shown in  FIG. 2   a , an elastic member  90  is used to provide resistance to tilting motion of the bar  80 . One way of attaching an elastic member  90  is to connect it between the top end of the handle  80  and a post  110  attached to a second crossbar  62 . Another way is to attach multiple elastic members  94  to the bottom of the bar  80  as shown in  FIG. 2   b . In this embodiment, one end of the elastic members is attached to the bottom end of the bar  80  and while the other end is attached at various points to the main frame  10 . The bar  80 , which is pivoted on the crossbar  60  and may end in a ball in socket  72 , can be moved in any direction away from the vertical or can be rotated or twisted using the handles  66   a  and  66   b ; however, it is continually biased toward the upright position by the elastic members  94 . As in the case of the embodiment of  FIG. 2   a , the bar  80  in the embodiment of  FIG. 2   b  can be locked in the upright position, or in one of a number of different non-upright positions as selected by the user, to prevent tilting movement. 
         [0112]    Optionally, bar  80  and socket  72  may have means to adjust pressure on the ball. 
         [0113]    Another such upper body training accessory can be a detachable exercise bicycle device  120  with an adjustable resistance to facilitate an upper body workout of the user as illustrated in  FIG. 3 . The hand operated bicycle device  120  is mounted on a post  130  which is attached to the crossbar  60 . When coupled to a device for measuring the energy expended by the user, this type of accessory is sometimes referred to as an “ergometer.” 
         [0114]    To provide information about the use of the exercise apparatus, a number of electronic sensors may be disposed at various points on the apparatus. For example, as shown in  FIG. 2   b , metal sensors  68   a  and  68   b  may be mounted on the handles  66   a  and  66   b , respectively, to sense the heart rate of the user. A motion sensor  24  may be mounted on the movable bar  80  to sense the position, speed and/or acceleration of the bar. 
         [0115]    On or more such motion sensors  122   a  and  122   b  may also be fitted to the hand-operated bicycle device, as shown in  FIG. 3 . 
         [0116]    In still another embodiment of the invention, the foot platforms  20  are fitted with various accessories for ankle training in multiple directions. The accessory can be a pivotal circular plate  140  as shown in  FIG. 4   a . The accessory can also be a half ball  146  made up of a material such as rubber as shown in  FIG. 4   b . A rotatable disc  136  can also be used as an accessory for the foot platforms  20  for developing rotational strength of the ankle of user as shown in  FIG. 4   c . These accessories may be both attachable and detachable, so that the user can apply them to the foot platforms  20  whenever an ankle exercise is required. 
         [0117]    In still another embodiment of the invention, a foot platform  26  is pivoted centrally as shown in  FIG. 4   d  so that the platform can rock up and down. This extra degree of freedom, in addition to the basic two degrees of freedom afforded the foot platform by the hanging elements  30 , enables the user to perform ankle training. 
         [0118]    In still another embodiment of the invention, the exercise apparatus  100  is mounted on a stand  200  with crossbars  230  using a ladder hook-on assembly  150  thereby making it a stand-alone product as shown in  FIG. 5   a . The ladder hook-on assembly  150  is attached to the support bars  14  of the main frame  10  of the exercise apparatus  100  as shown in  FIG. 5   b . Ladder hook-on assembly  150  helps in adjusting the height and position of the exercise apparatus  100  and can be attached or detached from the stand  200  as well as from the exercise apparatus  100  with ease. 
         [0119]    Motion sensors  22   a  and  22   b  can be provided on the foot platforms to sense the motion imparted by the user. These and the other sensors that may be provided on the exercise apparatus are connected to an electronic system (not shown) for processing and signals and providing an image display in response to these signals. 
         [0120]    In  FIG. 5   b  each platform  20  has a vibrator  52  attached thereto. The vibrators  52  communicate with a vibrator control  54 , wirelessly or through wiring  56 . Vibrators  52  may have batteries or may be connected to a power source (not shown). 
         [0121]    An exploded view of the stand  200  is illustrated in  FIG. 5   c . The stand  200  has vertical members  210  which are attached to each other by crossbar  230  forming a ladder-like frame structure. The vertical members  210  are attached to horizontal members  220  by well known means, such as gusset plates  250 . The horizontal members  220  are provided with leveling feet  260  which can be adjusted to raise, lower, or tilt stand  200  as desired. The side view of the stand  200  as shown in  FIG. 5   d  depicts the connection between the vertical members  210  and horizontal members  220  by the gusset plate  250  and the arrangement of the leveling feet  260  on the horizontal members  220 .  FIG. 5   e  depicts the use of hexagonal lock nuts  270  on the horizontal members  220  in attaching the feet  260 . 
         [0122]    The exercise apparatus  100  can optionally be mounted with ladder hook-on assembly  150  or another locking or mounting assembly on a wall or any supporting structure, such as a girder, a crossbeam, or another, larger exercise apparatus. 
         [0123]    In still another embodiment of the invention, the exercise apparatus  100  can be adapted to be used by a physically challenged person. A person having a disabled leg can rest the disabled leg on a foot rest mounted on the apparatus and perform the exercise with the other leg. Also, the exercise apparatus can be designed to be used by a person in a wheelchair. The user can perform upper body exercise by attaching an add-on to the main frame  10 . A locking device can be provided to lock the wheelchair of the user to avoid movement of the wheelchair while the user is performing the exercise. Various other alterations in the design of the equipment can be made to help a physically challenged person in performing several types of exercises without changing the scope of the invention. 
         [0124]    In still another embodiment of the invention, one or more sensors can be disposed within the exercise apparatus  100 . The sensors can be integrated with a screen display for interactive use. The sensors can also be used to sense the heartbeat rate or other body conditions of the user in order to display these conditions on a screen and to notify the user about his/her physical health status. Various other types of sensors, such as pulse sensor, heart rate sensor, motion sensor and/or the like can also be used for information transfer between the exercise device and the user. 
         [0125]    In still another embodiment of the invention, the exercise apparatus  100  can be equipped with electricity generating means to convert the physical energy of the user into electrical energy. Generated electrical energy can be used to power the exercise apparatus  100 , lighting of the exercise room, or the like. 
         [0126]    While support bar  14  is preferably perpendicular to member  308  of ladder hook-up assembly  150 , bar  14  can be rotatably positioned at an angle other than 90° by use of a plate  628  and pop pins  630 , as shown in  FIG. 14 . 
         [0127]    In another embodiment of the invention shown in  FIGS. 6   a  to  6   d , support members  290  are attached to a handle bar  292  and an attachment member  294 , which attachment member  294  can be attached to a wall mount or a stand, such as stand  300 . A platform support  302  is attached to each support member  290  at a pivot point  304 . 
         [0128]    Each platform support  302  comprises a longitudinally extending member or hanging member  306  and a foot platform  310 . Hanging member  306  may comprise two or more adjustable elements. In  FIG. 6   a , upper section  314  and lower section  318  can be fixed in length or preferably they can be adjusted against each other to vary the height of a platform  310 . Platform  310  is attached to the lower portion  318  of hanging member  306 , and elastic bands  320  extend from hanging member  306  to the ends of platform  310 . 
         [0129]    Elastic bands  320  are attached to lower portion  318 . Each foot platform  310  can pivot around pivot point  322 . 
         [0130]    Variations of the portion of the invention shown in  FIG. 6   a  are shown in  FIGS. 6   b  and  6   c . In  FIG. 6   b , hanging member  306  has holes  326  in lower section  318  to accommodate repositioning foot platform  322 . Similarly, the lateral surfaces of hanging member  306  have hooks or similar means  308  to receive an end of an elastic band  320  as a foot platform  322  is repositioned. 
         [0131]    In  FIG. 6   c , a foot platform  310  is pivotably positioned at the end of lower section  318 , with elastic bands  320  fixedly attached to section  318 . Upper section  316  and lower section  318  are adjustably joined at point  330 , where, for example, one or more bolts or pop pins  332  engage reciprocal openings  334  in sections  314  and  318 . 
         [0132]    The aspect of the invention reflected in  FIG. 6   d  comprises a hanging member  306  with a spring loaded lever  340 , to secure the longitudinal relationship between sections  314  and  318 . Sections  314  and  318  have engaging surfaces  342  and  344 , respectively, which are held in position when lever  340  is released. 
         [0133]      FIGS. 7   a  to  7   d  are cross-sectional views of pivot point  304  and hanging member  306  junctures. In  FIG. 7   a , a ball end  350  of hanging member  306  is received in socket  352  in pivot point  304 . A force plate  354  is rotably connected to an end of threaded bold  358  that extends through and engages threaded opening  360 . The other end of bolt  358  is affixed to turning knob  362 . When turning knob  362  is turned in a clockwise direction, force plate  354  is forced against ball  350  to lock hanging member  306  at a desired position to regulate resistance and to limit swinging movement. 
         [0134]    In a variation of the structure shown in  FIG. 7   a , as shown in  FIG. 7   b , the ball end  350  of hanging member  306  is received in a socket  352 , and at least one hydraulic cylinder  366  extends from a support plate  368  on hanging member  306  to support member  290 , to create means to regulate resistance and to limit swinging movement. Each hydraulic cylinder is pneumatically connected through a tube  370  to a control valve  374 . 
         [0135]    Another representation of a swing limiter aspect of the invention is shown in  FIGS. 7   c  and  7   d , where a support member  290  has a socket  352  that receives a ball  350  on the end of hanging member  306 . A stop plate  380 , preferably circular, with an opening  382  is positioned on the lower surface of support member  290  such that hanging member  306  extends therethrough. An adjustable height bumper  384  is positioned around hanging member  306 , and stop member  384  is raised or lowered to adjust or limit the amount or degree of swing of hanging member  306 . When stop member  384  is adjacent stop plate  380 , as in  FIG. 7   c , there is essentially no swing. However, when height bumper  384  is lowered, as is  FIG. 7   d , there is more swing for hanging member  306  (and any foot platform attached thereto). 
         [0136]    In the top view of  FIG. 7   e , stop plate  380  can be seen positioned below support member  290 . 
         [0137]    In the embodiment of the invention set forth in  FIGS. 7   f  to  7   i , the motion of a stop member  384  is limited by a stop block  386  that is positioned on support member  290  with a pop pin, screw, or other attachment mechanism  388 . As stop block  386  is positioned away from ball  350 , handing member  306  has more motion. Stop block  386  can be straight, curved, or otherwise configured to impart a desired limitation on the motion of hanging member  306 . 
         [0138]      FIG. 8  is a single arm embodiment of the invention where an exercise apparatus  390  comprises an upper support structure  392  with a handle bar or crossbar  394 , attached to a stand  398 . On each side of upper support structure  392  a hanging member  400  extends from a pivot point  402  to a foot platform  404 . Each foot platform  404  is tethered by an elastic member  406  to a bottom portion  408  of stand  398 , to create swing limiters. Hanging member  400  has a shock absorber or springing shaft  412  to provide a third degree of movement. 
         [0139]    Apparatus  390  comprises various sensors and analyzers that sense and analyze data that can be inputted to a CPU  416  and then displayed on a monitor  418 . Means to track and record the direction of swing, distance, speed, and acceleration can be housed in pivot points  402 , and parameters such as heart rate, blood pressure, and/or pulse rate can be measured by sensors such as sensors  420  in crossbar  394 . Data can be analyzed in CPU  416  to track, record, store, and/or display the data, to provide biofeedback, or to use the data in an interactive game or program. The CPU may have slots or other openings to receive flash drives, discs, plugs, CDs, or DVDs to receive or export data or programs. 
         [0140]    In the embodiment of the invention shown in  FIGS. 9   a  and  9   b , an exercise apparatus  426  comprises an upper support structure  428  with a handle bar or crossbar  430  attached to a stand  432 . On each side of upper support structure  428  a vertical hanging member  436  extends from a pivot point  440  to a foot platform  442 . Each hanging member  436  is a solid adjustable bar with a height adjustment mechanism  444  for lowering or raising the height of each foot platform  442 . Each foot platform  442  is connected to a hanging member  440  by band, springs, or shock absorbers  446 . 
         [0141]    Apparatus  426  comprises various sensors and analyzers that sense and analyze data that can be inputted to a CPU  450  and then displayed on a monitor  452 . Means to track and record the direction of swing, distance, speed, and acceleration can be housed in pivot points  440 , and parameters such as heart rate, blood pressure, and/or pulse can be measured by sensors  438  in handle bar  430 . Data can be analyzed in CPU  450  to track, record, store, analyze, and/or display the data, to provide biofeedback, or to use the data in an interactive game or program. 
         [0142]    In another embodiment of the apparatus of the invention shown in  FIG. 9   b , each foot platform is suspended from a single pivot point  440  with a wishbone-shaped, two-arms hanging member  448 . An adjustment member  450  positioned below the pivot point  440  can adjust the height of the wishbone structure. 
         [0143]    In the representation of an embodiment of the invention set forth in  FIGS. 10   a  and  10   b , an exercise apparatus  480  comprises an upper support member  482  with a crossbar  484  and a monitor and/or CPU  486 , attached to a stand  488 . Stand  488  extends to and is supported by a base  490  comprising contoured surfaces  492 . A hanging member  494  extends from a pivot point  496  on each side of upper support member  482  to a “skating” foot platform  500 . Each foot platform  500  has multi-directional wheels, rollers, or castors  502 , preferably four. Each wheel, roller, or castor  502  is connected to a foot platform  500  by spring tension means  504 . 
         [0144]    In the embodiment of the invention shown in  FIG. 11 , an exercise apparatus  506  has support members  508  with a crossbar  510 . Multi-position grip handles  512  positioned on crossbar  510  extend upwardly vertically from pivot points  514 . Pivot points  514  provide tension to grip handles  512  to resist any forces exerted in the X-Y plane by a user. The resistance can be provided by the pivot points  514  themselves or by any of other known configurations, including, but not limited to, those shown in  FIGS. 2   a  and  2   b . Optimally crossbar  510  could also include an multidirectional arm unit such as unit  80  shown in  FIGS. 2   a  and  2   b.    
         [0145]    In the exercise apparatus of the invention, the foot platforms can be supported in many different ways to allow for multi-directional swinging of foot platforms.  FIG. 12  represents an embodiment of the invention where an exercise apparatus  516  comprises a support member  518  attached to and supported by a stand  520 . Support member  518  has a crossbar  522  and inwardly extending support members  524 . Here, each support member  524  has two connection points  528  from which a hanging member  530  extends to a platform  532 . Each hanging member  532  can be rigid or flexible, elastic or non-elastic, optimally to provide spring or elastic tension to allow for “Z” direction of movement. 
         [0146]    Various configurations have been described above to provide tension or resistance to movement of a portion of the exercise apparatus. In another embodiment of the invention shown in  FIGS. 13   a  to  13   d , an exercise apparatus  536  comprises a support member  538  supported by a stand  540 . A rear portion  552  of support member  538  has two handgrips  546  extending from pivot points  548  and an exerciser  550  extending from pivot point  558 . Foot platforms  554  are suspended by hanging members  556 , which are each attached to a pivot point  560 . 
         [0147]    A hand grip  546  and pivot point  548  can be appreciated in the cross-section of  FIG. 13   b , a metal ball  562  of hand grip  546  is received in a socket  564  in support member  538 . A servo motor or solenoid  568  is electrically connected to a magnet or eddy current unit  570  adjacent metal ball  562 . Servo motor  568  is in communication with controller  572 , which is in communication through wire  580  with a power source (not shown). A dial or switch  574  controls controller  572 . 
         [0148]    Similarly, as shown in  FIG. 13   c , a metal ball  582  forming part of exercise handle  550  extends into a socket  584  in support member  538  where a servo motor or solenoid  586  is electrically connected to magnets or eddy current units  590  at either side of metal ball  582 . Servo motor  586  communicates with controller  592 , which is in communication through wire  594  with a power source (not shown). A dial or switch  588  controls controller  592 . 
         [0149]    In  FIG. 13   d , the upper end of a hanging member  556  forms a ball  598  that is positioned within a socket  596  in support member  538 . A servo motor or solenoid  600  is electrically connected to a magnet or eddy current unit  602  adjacent ball  598 . Servo motor  600  is in communication with a controller  604 , which in turn is in communication through wire  604  with a power source (not shown). A dial or switch  608  controls controller  604 . 
         [0150]    Another embodiment of the invention is set forth in  FIG. 14 , where an exercise apparatus  610 , ladder hook-on assembly  618 , and stand  622  are configured to accommodate users of different sizes or with special requirements. Various means are useful to adjust the distances between foot platforms and to increase or decrease forces on a user&#39;s lower body or change the angles of plates. 
         [0151]    Adjustable exercise apparatus  610  comprises a C-shaped holding bar  612  and support bars  616 . Holding bar  612  is attached to support bars  616 , which are in turn attached to sleeve members  618 . Sleeve members  618  are fittingly connected to stand  622 , which comprises two cross-members  620 . 
         [0152]    Each cross-member  620  is configured to be adjustable in its length so that the distance between support bars  616  can be adjusted. Each cross-member preferably comprises two sections where one section slides within the other but the relative positions can be fixed by pop pins or similar means. Optimally hydraulic means could be used to slide the sections of cross-members  620  back and forth. 
         [0153]    While, in one embodiment, support bars  616  can be attached to sleeves  618 , in another embodiment the relative position of a support bar  616  to a sleeve  618  can be adjusted. As shown in  FIG. 14 , a support plate  628  with holes  630  will allow support bar  616  to be rotated about sleeve  618 . Pop pins  634  or other means will hold support bar  616  in position. This could be done hydraulically as well. To allow support bars  616  to rotate in this fashion, C-shaped holding bar  612  will have a section  632  that splits or uncouples. For example, optionally opposite sections of holding bar  612  are configured at section  632  to slide along a circular member (not shown) within section  632  or over one another in a male/female arrangement. 
         [0154]    Support bars  616  attach to holding bar  612  at junction points  636 . It is within the scope of the invention that each junction point  636  is configured to permit a portion of holding bar  612  to move back and forth in a direction perpendicular to support bar  616 . The junction point could comprise slidable sleeves that can be fixed together with, for example, pop pins, or a hydraulic cylinder. 
         [0155]    The embodiments of the invention described above mostly comprise a support member from which hanging elements support flat platforms. These configurations are especially appropriate to certain users and exercises, especially those where support for the user at the hip level is important. There are also embodiments of the invention where foot platforms are supported in a different manner. In the embodiment of the invention shown in  FIG. 15 , an exercise apparatus  650  comprises a handlebar member  652  which is connected through stand  654  to a base  656 . Base  656  comprises longitudinal support members  658  that support foot platforms  662 . Each foot platform  662  has a support system comprising slidable or rollable cross-pieces  666  so that foot platforms  662  can independently move, forward, back, or side-to-side. Base  656  may have adjustable supports  668  that raise or lower portions or corners of base  656 . 
         [0156]    The embodiment  FIG. 15  may include means to track, record, etc., the position of each foot platform  662  in three dimensions. Data is communicated to CPU  670 , which displays data on display screens  672 . A controller  674  is in communication with various sensors (not shown). 
         [0157]    In the embodiment of the invention shown in  FIG. 16 , a handlebar  680  is attached to a stand  682  supported by a base  684  comprising two parallel laterally extending members  686 . Handlebar  680  comprises upper body systems  688 , a CPU  690 , and display screen  694 . Foot platforms  696  are supported by support members  698 , the ends  700  of which are supported by lateral members  686 . Support member ends move slidably within or atop lateral members  686  so that the user can move back and forth. In addition, foot platforms  696  move longitudinally along support members  698 , so that the user can move his or her feet in the X-Y direction. 
         [0158]    A variation of the embodiment of  FIG. 16  is shown in  FIG. 17 , where lateral support members  710  comprise sections  712  hinged at hinge  714 , that may be curved or straight. Also, each outside end of a section  712  has a servo mechanism  716  that can raise or lower that outside end. Longitudinal support members  718  are movably supported by sections  712  in turn support foot platforms  718 , so that foot platforms  720  can move in three dimensions. 
         [0159]    The embodiments of the invention set forth in  FIGS. 18 to 20  are directed to exercise apparatuses wherein the foot platforms are supported in different manners. The exercise apparatus  730  in  FIG. 18  has a handle bar  732  attached to a support  734 , which in turn is attached to a base  736 . Base  736  comprises two longitudinally extending members  738  to which foot platforms  740  are attached through support members  742 . Support members  742  are positioned to be perpendicular to a longitudinally extending member  738  and to be slidable in a track  744  atop or in a lateral surface of longitudinally extending member  738 . Also, foot platform  740  is slidable or movable along support member  742 , with the result that each foot platform  740  has two degrees of movement. 
         [0160]    In the embodiment shown in  FIG. 19 , an exercise apparatus  746  has a handlebar  748  supported by vertical member  752 , which is attached to base  754 . Handlebar  748  has a display  756  and hand grips  760  attached thereto. Foot platforms  762  are supported by support  764  so that each foot platform  762  can move backwards and forwards as well as up and down, in three degrees of freedom. There are roller slides  766  so that the foot platforms  762  can move along supports  764  as well as across center line  770 . 
         [0161]    The embodiment shown in  FIG. 20  is similar to that shown in  FIG. 19  where exercise apparatus  772  has a CPU  774 , sensors to measure movement and pressure to provide biofeedback data, and signals through wires  776 . Power is supplied through a power cord  778  from a power source (not shown). In the embodiment shown in  FIG. 19 , an exercise apparatus  746  has a handlebar  748  supported by vertical member  752 , which is attached to base  754 . Handlebar  748  has a display  756  and hand grips  760  attached thereto. Foot platforms  762  are supported by support  764  so that each foot platform  762  can move backwards and forwards as well as up and down, in three degrees of freedom. There are roller slides  766  so that the foot platforms  762  can move along supports  764  as well as across center line  770 . 
         [0162]    In the invention herein, many different types of foot platforms are useful, especially foot platforms that can slide along a track. Typically, the foot platforms have a top plate, optionally atop a base plate, with wheels adopted to follow a defined pathway. The foot platforms are slidable in as frictionless a manner as possible. 
         [0163]    A representative example of a foot platform is shown in the rear cross-sectional view of  FIG. 21A  and the substantially lateral cross section view in  FIG. 21B . A top plate  820  is supported by a base plate  822 , which has a frame structure  824  that holds wheels  826 . A wheel support bracket  830  holds wheels  826  in the groove  832  in an I-beam rail  834 . 
         [0164]    Other embodiments of foot platforms useful according to the invention are shown in  FIGS. 22   a  to  22   c , which foot plates can provide an extra degree of freedom to a user&#39;s foot. A footplate  840  in  FIG. 22   a  comprises a top plate  842 , a base plate  844 , and an inner air cushion  848  positioned between top plate  842  and base plate  844 . Optionally, footplate  840  has multi-directional wheels, rollers, or casters  850 . In FIG.  22   b , a foot platform  852  comprises a top plate  854 , a base plate  856 , and spring means  858  positioned between top plate  854  and base plate  856 . Foot platform  852  has multi-directional wheels, rollers, or casters  862 . 
         [0165]    The foot platform  864  in  FIG. 22   c  comprises a top plate  866 , a magnetic base plate  868 . The distance between top plate  866  and magnetic base plate  868  is maintained by maintaining charges on plates  866  and  868  to cause them to repel each other and maintain space between. The magnetic forces can be regulated by a controller  872  that is connected to a power source (not shown). 
         [0166]      FIG. 23  is a representation of an exercise apparatus of the invention that simulates an ice skating motion. Handle bars  880  are connected through a support  882  to a frame or base  884 , which base  884  is in a semi-circular, C-shape, or U-shape shape. A foot platform  888  is supported by, and slides on, a base  890  that is attached to a spring system and/or shock absorber system  892 . System  892  has one or more pivot points  896  and  898 . 
         [0167]    In the embodiment of the invention set forth in  FIGS. 24   a  and  24   b , a support  902  comprises pivot points  904  from which hanging members  906  are suspended. Foot platforms  910  are connected to the lower sections  912  of hanging members  906 . Pivot points  904  comprise appropriate adjustable means, such as pop pins  914  so that a user  916  can adjust the height of the hanging members  906  and foot platforms  910 . 
         [0168]      FIGS. 25   a  and  25   b  represent another apparatus of the invention where the foot platforms  920  are positioned to provide a different type of workout to a user  922 . A support frame  924  comprises a handle  928  and means  930  for adjustably holding hanging elements  932 . Foot platforms  920  are attached to hanging elements  932 , which could be chains or straps through elastic bands  936 . The user  922  is positioned on the apparatus so that the user&#39;s legs and feet go in opposite directions. 
         [0169]    A dynamic downhill ski simulator is set forth in  FIGS. 26   a  to  26   d . A support frame  942  is configured so that hanging elements  944  are suspended from pivot points  946 . A handlebar  948  is leveraged out so that as user  950  leans forward, foot platforms  952  tend to tilt forward. A connector member  954 , which can be elastic or non-elastic, connects foot platforms  952 . Optionally, the user can visualize performance in a monitor  956  that displays data collected by sensors and analyzed by a CPU (not shown). Optionally, foot platforms  952  have pivoting members  956  for holding the feet of user  950 , as shown in  FIG. 26   e.    
         [0170]    In another embodiment of the invention, where there are foot platforms that swing freely, a device can temporarily support or stabilize a user prior to or after use. In  FIG. 27   a , a scissor jack platform  960  is positioned beneath a foot platform  962 . The platform  960  can be raised or lowered by mechanical means, such as a lever, or an electrical motor (not shown). 
         [0171]    Alternatively, an air bag  964  could be inflated to stabilize a foot platform  966 . Air bag  964  would be connected to a pump  968  having a controller (not shown) and connected to a power source (not shown). 
         [0172]    While certain embodiments of the present invention have been illustrated and described, it will be clear that the present invention is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions and equivalents will be apparent to those skilled in the art, without departing from the spirit and scope of the present invention, as described in the following claims.