Apparatuses, systems, and methods for improvement of physical fitness

The present application includes various embodiments of apparatuses, systems, kits, and methods for physical exercise of a user. Some embodiments, for example, include an apparatus comprising: a strap having a first end, a second end, a length between the first end and the second end, the strap having an elastic portion between and spaced apart from the first end and the second end; a first handle configured to be coupled to the strap on a first side of the elastic portion such that the first handle is spaced apart from the elastic portion; a second handle configured to be coupled to the strap on a second side of the elastic portion such that the second handle is spaced apart from the elastic portion; and one or more suspension members configured to be coupled (i) to the strap at a first point between the elastic portion and the first handle, and at a second point between the elastic portion and the second handle, and (ii) to be coupled to a supporting structure.

BACKGROUND

1. Field of the Invention

The present invention relates generally to improvement of physical fitness and, more particularly, but not by way of limitation, to an apparatus that can be used to perform a variety of exercises with a variety of levels of assistance and/or resistance.

2. Description of Related Art

One example of an apparatus or piece of equipment that can be suspended from a horizontal bar is disclosed in U.S. patent application Ser. No. 13/368,916, filed Feb. 8, 2012 and published as US 2012/0202662, which is incorporated by reference in its entirety. Additional examples of exercise apparatuses are disclosed in U.S. Pat. No. 7,217,227; U.S. Pat. No. 7,651,448; U.S. Pat. No. 8,012,071; and U.S. Pat. No. 8,033,966.

SUMMARY

This disclosure includes embodiments of apparatuses, systems, kits, and methods. Some embodiments can, for example, be useful for recreational exercise, rehabilitative exercise and/or physical therapy (e.g., after injury, surgery, joint replacement, etc.).

Some embodiments of the present apparatuses comprise: a strap having a first end, a second end, a length between the first end and the second end, the strap having an elastic portion between and spaced apart from the first end and the second end; a first handle configured to be coupled to the strap on a first side of the elastic portion such that the first handle is spaced apart from the elastic portion; a second handle configured to be coupled to the strap on a second side of the elastic portion such that the second handle is spaced apart from the elastic portion; a first suspension member configured to be coupled to a supporting structure and to the strap at a first point between the elastic portion and the first handle; and a second suspension member configured to be coupled to a supporting structure and to the strap at a second point between the elastic portion and the second handle; where each suspension member comprises: (i) a first flexible member configured to be adjustably coupled to the strap; (ii) a first bracket having a width, a height, and a thickness that is smaller than each of the width and the height, the first bracket coupled to the first strap; (iii) a second bracket including a slot having a width and a height, the width of the slot being less than the width of the first bracket and being larger than the height of the first bracket, the height of the slot being larger than the thickness of the first bracket and being smaller than the height of the first bracket; and (iv) a second flexible member coupled to the second bracket and defining a loop through which the second bracket will fit.

In some embodiments of the present apparatuses, the strap includes a strap assembly comprising: an elastic segment that includes at least a part of the elastic portion of the strap; a first substantially-inelastic segment configured to be coupled to the elastic segment and to extend to the first end of the strap; and a second substantially-inelastic segment configured to be coupled to the elastic segment and to extend to the second end of the strap. In some embodiments, the first substantially inelastic segment and second substantially inelastic segment are each configured to be removably coupled to the elastic segment. Some embodiments further comprise: a first connector assembly comprising: (i) a first connector clamped to the elastic segment without penetrating the elastic segment, and (ii) a second connector coupled to the first substantially inelastic segment, the second connector configured to be releasably coupled to the first connector; and a second connector assembly comprising: (iii) a third connector clamped to the elastic segment without penetrating the elastic segment, and (iv) a fourth connector coupled to the second substantially inelastic segment, the fourth connector configured to be releasably coupled to the third connector.

Some embodiments of the present apparatuses further comprise: a first adjuster coupled to the one or more suspension members, and coupled to the strap between the first end of the strap and the elastic portion; and a second adjuster coupled to the one or more suspension members, and coupled to the strap between the second end of the strap and the elastic portion. In some embodiments, the first and second suspension members are configured to be coupled to a supporting structure and in substantially-fixed relation to the strap, with a part of the strap between the first and second points at which the first and second suspension members are coupled to the strap forming a U-shape onto which the feet of a user can be positioned such that the elastic portion can assist the user in performing pull-ups from the supporting structure. In some embodiments, the first and second suspension members are configured to be coupled to a supporting structure and in substantially-fixed relation to the strap, with a part of the strap between the first and second points at which the first and second suspension members are coupled to the strap forming a U-shape onto which the trunk of a user can be positioned such that the elastic portion can assist the user in performing push-ups from the ground or from the handles. In some embodiments, the apparatus is further configured such that the elastic portion can assist the use in performing push-ups from the ground while the user's feet are positioned in the handles.

Some embodiments of the present apparatuses comprise: a strap having a first end, a second end, and a length between the first end and the second end, the strap having an elastic segment, a first substantially inelastic segment between the first end and the elastic segment, and a second substantially inelastic segment between the second end and the elastic segment; a first handle configured to be coupled to the strap on a first side of the elastic segment such that the first handle is spaced apart from the elastic segment; a second handle configured to be coupled to the strap on a second side of the elastic segment such that the second handle is spaced apart from the elastic segment; one or more suspension members configured to be coupled (i) to the strap at a first point between the elastic segment and the first handle, and at a second point between the elastic segment and the second handle, and (ii) to be coupled to a supporting structure; a first connector assembly comprising: (i) a first connector clamped to the elastic segment without penetrating the elastic segment, and (ii) a second connector coupled to the first substantially inelastic segment, the second connector configured to be releasably coupled to the first connector; and a second connector assembly comprising: (iii) a third connector clamped to the elastic segment without penetrating the elastic segment, and (iv) a fourth connector coupled to the second substantially inelastic segment, the fourth connector configured to be releasably coupled to the third connector.

In some embodiments of the present apparatuses, the one or more suspension members comprise: a first suspension member configured to be coupled to a supporting structure and to the strap at a first point between the elastic segment and the first handle; and a second suspension member configured to be coupled to a supporting structure and to the strap at a second point between the elastic segment and the second handle; where each suspension member comprises: a first flexible member configured to be adjustably coupled to the strap; a first bracket having a width, a height, and a thickness that is smaller than each of the width and the height, the first bracket coupled to the first strap; a second bracket including a slot having a width and a height, the width of the slot being less than the width of the first bracket and being larger than the height of the first bracket, the height of the slot being larger than the thickness of the first bracket and being smaller than the height of the first bracket; and a second flexible member coupled to the second bracket and defining a loop through which the second bracket will fit.

Some embodiments of the present apparatuses further comprise: a first adjuster coupled to the one or more suspension members, and coupled to the strap between the first end of the strap and the elastic segment; and a second adjuster coupled to the one or more suspension members, and coupled to the strap between the second end of the strap and the elastic segment. In some embodiments, the one or more suspension members are configured to be coupled to a supporting structure and in substantially-fixed relation to the strap, with a part of the strap between the first and second points at which the one or more suspension members is coupled to the strap forming a U-shape onto which the feet of a user can be positioned such that the elastic portion can assist the user in performing pull-ups from the supporting structure. In some embodiments, the one or more suspension members are configured to be coupled to a supporting structure and in substantially-fixed relation to the strap, with a part of the strap between the first and second points at which the one or more suspension members is coupled to the strap forming a U-shape onto which the trunk of a user can be positioned such that the elastic portion can assist the user in performing push-ups from the ground or from the handles. In some embodiments, the apparatus is further configured such that the elastic portion can assist the use in performing push-ups from the ground while the user's feet are positioned in the handles. Some embodiments further comprise: a supporting structure having a bar to which the one or more suspension members can be coupled.

Some embodiments of the present kits comprise any embodiment of the present apparatuses that comprises a removable elastic segment (e.g., first and second substantially inelastic segments configured to be removably coupled to the elastic segment), where the elastic segment is a first elastic segment; and comprise an additional or alternate elastic segment. In some embodiments, the additional or alternate elastic segment has a higher modulus of elasticity than the first elastic segment.

Some embodiments of the present methods comprise: coupling the suspension member(s) of any embodiment of the present apparatuses to a supporting structure with a part of the strap between the first and second points at which the one or more suspension members are coupled to the strap forming a U-shape.

Some embodiments of the present methods comprise: positioning at least one foot of a user onto the U-shape and performing pull-ups such that the elastic portion assists the user in performing the pull-ups.

Some embodiments of the present methods comprise: positioning the trunk of a user onto the U-shape and performing push-ups such that the elastic portion assists the user in performing the push-ups. In some embodiments, at least one hand of the user is supported by a surface while performing the push-ups. In some embodiments, at least one hand of the user is supported by at least one of the handles while performing the push-ups.

Some embodiments of the present methods comprise: adjusting the position of the one or more suspension members relative to at least one of the first end of the strap and the second end of the strap.

Some embodiments of the present methods comprise: adjusting, after positioning at least one foot of the user, the position of the one or more suspension members relative to at least one of the first end of the strap and the second end of the strap to increase the length of strap between the first and second points at which the one or more suspension members is coupled to the strap.

Details associated with the embodiments described above and others are presented below.

DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

The terms “comprise” (and any form of comprise, such as “comprises” and “comprising”), “have” (and any form of have, such as “has” and “having”), “include” (and any form of include, such as “includes” and “including”) and “contain” (and any form of contain, such as “contains” and “containing”) are open-ended linking verbs. As a result, a bait station that “comprises,” “has,” “includes” or “contains” one or more elements possesses those one or more elements, but is not limited to possessing only those elements. Likewise, a method that “comprises,” “has,” “includes” or “contains” one or more steps possesses those one or more steps, but is not limited to possessing only those one or more steps.

Referring now to the drawings, and more particularly toFIGS. 1-2, shown therein and designated by the reference numeral10is one embodiment of the present apparatuses. In the embodiment shown, apparatus10is generally portable and usable with different support structures (e.g., in different places), as described below in more detail. In the embodiment shown, apparatus10comprises: a strap (e.g., a primary strap)14, a first handle18, and a second handle22. Strap14can comprise any suitable material that permits apparatus10to function as described in this disclosure. For example, strap14can comprise a woven strap-like or webbing material with a flat cross-sectional shape (e.g., polyester, nylon, cotton, and/or the like), and/or having a width of at least, or between any two of: 0.5, 1, 2, 3, 4, or more inches. In the embodiment shown, handles18and22are each circular (e.g., similar to the circular handles used in gymnastics) that can comprise one or materials such as wood, polymer, and/or the like; and that can be coupled to strap14by doubling strap over itself around a portion of the handle and then affixing the strap to itself (e.g., with stitches, adhesive, rivets, and/or the like) to form a loop, as shown. In the embodiment shown, strap14has a first end26, a second end30, and a length between first end26and second end30. In the embodiment shown, strap14also includes an elastic portion34between and spaced apart from first end26and second end30.

Elastic portion34can, for example, comprise at least one of: natural rubber (e.g., latex), synthetic rubber (e.g., latex), rubberized neoprene, ethylene propylene diene monomer (EPDM) rubber, various natural gums, shock cord or bungee cord, and/or various other elastic materials, or a combination of any two or more of the foregoing; and/or can comprise a plurality of strands of material (e.g., in a woven, or laminated configuration). Elastic portion34can also have any suitable modulus of elasticity and/or tensile strength. For example, in some embodiments, elastic portion34has a tensile strength of at least 300 lbs, 500 lbs, 750 lbs, 1000 lbs, 1500 lbs, or more. In the embodiment shown, first handle18is configured to be coupled to (and is shown coupled to) the strap on a first side of elastic portion34(e.g., at first end26, as shown) such that handle18is spaced apart from elastic portion34. Similarly, in the embodiment shown, second handle22is configured to be coupled (and is shown coupled) to the strap on a second side of elastic portion34(e.g., at second end30, as shown) such that handle22is spaced apart from elastic portion34. In other embodiments first end26can extend beyond handle18(e.g., such that handle18is configure to be coupled to strap between first end26and elastic portion34); and/or second end30can extend beyond handle22(e.g., such that handle22is configured to be coupled to strap between second end30and elastic portion34). In the embodiment shown, other than elastic portion34, strap14is substantially inelastic (e.g., may comprise woven strap material, such as, for example, any of the types of strap material used for automotive seatbelts, cargo tie-downs, and the like). In some embodiments, elastic portion34has a flat cross-sectional shape; and/or has a width substantially equal to the width of the portions of strap14between elastic portion34and ends26and30(e.g., of at least, or between any two of: 0.5, 1, 2, 3, 4, or more inches). For example, in some embodiments, the entire length of strap14(including elastic portion34) has a flat cross-sectional shape with a nominal width of 2 inches (and, in some such embodiments, elastic portion34has a thickness of 4.75 millimeters). In some embodiments, elastic portion34is covered by a sleeve of material (e.g., cotton fabric), such as, for example, to provide a soft outer surface for contact with a user during use.

In some embodiments, apparatus10also comprises one or more suspension members configured to be coupled (i) to the strap at a first point42between elastic portion34and first handle18, and at a second point46between elastic portion34and second handle22; and (ii) to be coupled to a supporting structure (e.g., bar204, as shown inFIGS. 3-8). For example, in the embodiment shown, apparatus10comprises two suspension members: a first suspension member38athat is configured to be coupled (i) to the strap at the first point42, and (ii) to be coupled to a supporting structure (e.g., bar204, as shown inFIGS. 3-8); and a second suspension member38bthat is configured to be coupled to the strap at second point46, and to a supporting structure (e.g., bar204, as shown inFIGS. 3-8). In other embodiments, a single supporting member can be configured to be coupled to the strap at both points42and46, and to a supporting structure (e.g., at one or more points). Points42and46can be spaced apart by a distance of, for example: equal to, greater than, or between any of: 6, 12, 18, 24, 30, or more inches. In the embodiment shown, suspension members38aand38bcomprise a flexible, substantially-inelastic strap material (e.g., may comprise woven strap material, such as, for example, any of the types of strap material used for automotive seatbelts, cargo tie-downs, and the like) similar to that of strap14(e.g., substantially-inelastic members54and58), but having a smaller width (in other embodiments, suspension members can have a width that is less than or greater than that of members54and58). For example, suspension members38aand38bcan each comprise a woven strap-like or webbing material with a flat cross-sectional shape (e.g., polyester, nylon, cotton, and/or the like), and/or having a width of at least, or between any two of: 0.5, 1, 2, 3, 4, or more inches. In other embodiments, the one or more suspension members can be substantially rigid.

In the embodiment shown, strap14includes a strap assembly comprising: an elastic segment50that includes at least a part (e.g., all, as shown) of elastic portion34; a first substantially-inelastic segment54configured to be coupled to elastic segment50and extend to first end26of the strap; and a second substantially-inelastic segment58configured to be coupled to elastic segment34and extend to second end30of the strap. In some embodiments, such as the one shown, first segment54is substantially identical to second segment58. Elastic segment50(e.g., elastic portion34) can comprise, for example, at least one of: natural rubber (e.g., latex), synthetic rubber (e.g., latex), rubberized neoprene, ethylene propylene diene monomer (EPDM) rubber, various natural gums, shock cord or bungee cord, and/or various other elastic materials, or a combination of any two or more of the foregoing; and/or can comprise a plurality of strands of material (e.g., in a woven, or laminated configuration). In some embodiments, elastic segment50(e.g., and elastic portion34) has a relaxed (un-stretched) length equal to, or between any two of: 12 inches, 18 inches, 24 inches, 30 inches, 36 inches, or more. In some embodiments, first and second segments54and58each has a length equal to, or between any two of: 4 feet, 5 feet, 6 feet, 7 feet, 8 feet, 9 feet, 10 feet, or more.

First and second segments54and58can be configured to be coupled to elastic segment in any manner that permits the apparatus to function as described in this disclose. In some embodiments, first and/or second segments54and58are non-removably coupled to elastic segment (e.g., by way of stitches, adhesives, rivets, and/or the like). For example, in the embodiment shown, first segment54and second segment58are each stitched (and/or crimped, glued, riveted, and/or the like) to elastic segment50in connection portions62that can overlap (e.g., do overlap in the embodiment shown) at least part of the elastic portion. In other embodiments, first substantially inelastic segment54and second substantially inelastic segment58are each configured to be removably coupled to elastic segment50(e.g., via connectors such as, for example: clips, buckles, clamps, or the like (not shown, but suitable types of buckles and connectors are used for automotive seat-belt buckles, other canvas straps, and the like)). Such embodiments can further comprise: a first connector (not shown, but at or in place of connection portion62) configured to couple the first substantially-inelastic segment to the elastic segment; and a second connector (not shown, but at or in place of connection portion62) configured to couple the second substantially-inelastic segment to the elastic segment. Some embodiments of the present kits comprise a plurality of elastic segments (e.g., each with a different modulus of elasticity or strength to provide different levels of assistance or resistance, as described in more detail below).

In some embodiments, apparatus10comprises a first adjuster66coupled to the one or more suspension members, and coupled to the strap between the first end of the strap and the elastic portion; and apparatus10comprises a second adjuster70coupled to the one or more suspension members, and coupled to the strap between the second end of the strap and the elastic portion. For example, in the embodiment shown, apparatus10comprises a first adjuster66coupled to first suspension member38aand coupled to strap14between first end26and elastic portion34; and apparatus10comprises a second adjuster70coupled to second suspension member38band coupled to strap14between second end30and elastic portion34. In the embodiment shown, first suspension member38ais (e.g., non-removably) coupled in fixed relation to adjuster66, and second suspension member38bis (e.g., non-removably) coupled in fixed relation to adjuster70. In the embodiment shown, adjusters66and70are each configured such that (i) if the adjuster is in a first configuration, the adjuster will slide relative to strap14(e.g., to adjust the position of point42or46, and thereby the length of strap14that is between the adjuster and the respective first end26or second end30of the strap); and (ii) if the adjuster is in a second configuration, the adjuster will resist sliding relative to the strap (such that the length of strap14that is between the adjuster and the respective first end26or second end30of strap14is substantially constant). For example, and as described in more detail below with reference toFIGS. 9A-9K, adjusters66and70can comprise a mechanism that is similar in some respects to a type of mechanism often used in automotive lap belts to adjust the position of the buckle (and thereby the length of the lap belt).

In the embodiment shown, suspension members38aand38bare each non-removably coupled to the respective one of adjusters66or70. For example, in the embodiment shown, suspension members38aand38bloop through an opening (e.g., opening324described below with reference toFIGS. 9B-9D) and are securely fastened back to themselves (e.g., via stitches, adhesive, rivets, and/or the like). In other embodiments, adjusters38aand38bare removably coupled to their respective adjusters (e.g., via hooks, buckles, connectors, or the like).

In some embodiments, first suspension member38ais configured to be coupled to adjuster66and a supporting structure such that adjuster66is spaced apart from a supporting structure if first suspension member66is coupled to the supporting structure; and second suspension member38bis configured to be coupled to adjuster70and a supporting structure such that adjuster70is spaced apart from a supporting structure if second suspension member38bis coupled to the supporting structure. For example, in the embodiment shown, first suspension member38ahas a first end74configured to be coupled (and shown coupled) to first adjuster66, and a second end78configured to be coupled to a supporting structure (e.g., as shown inFIGS. 3-8); and second suspension member38bhas a first end82configured to be coupled (and shown coupled) to the second adjuster, and the second end86configured to be coupled to a supporting structure (e.g., as shown inFIGS. 3-8).

In the embodiment shown, apparatus10also comprises: a first connector94coupled (and shown coupled) to second end78of the first suspension member and configured to couple the first suspension member to a supporting structure; and a second connector98coupled (and shown coupled) to second end of the second suspension member and configured to couple the second suspension member to a supporting structure. For example, in the embodiment shown, connectors94and98each comprises a carabiner. Additionally, in the embodiment shown, suspension members38aand38beach comprise an enlarged connection portion102(e.g., where each suspension member is doubled over and stitched to itself to hold the respective connector94or98) having a thickness that is greater than the thickness of the rest of the respective suspension members38aand38b. As such, connection portions102can also serve as connectors, such as, for example, to close suspension members38aand/or38bin a door (between the door and the door jamb) such that one or both of connection portions102are on one side of the door and the remainder of apparatus10is on the other side of the door (e.g., so that the door acts an anchor for the apparatus during use). In other embodiments, these connectors can comprise any suitable structure (e.g., clips, tabs, buckles, and/or the like. In some embodiments, suspension members38aand38beach has a length equal to, or between any two of: 12 inches, 18 inches, 24 inches, 28 inches, 30 inches, 36 inches, or more. For example, in some embodiments, segments54and58of strap14each has a length of 8 feet; elastic segment50(and elastic portion30) has a relaxed length of 30 inches; and/or suspension members38aand38beach has a length of 28 inches.

Referring now toFIGS. 3-8, shown there are examples of a use of the present apparatuses. In the embodiment shown, apparatus10is shown coupled to a supporting structure200. In the embodiment shown, supporting structure200includes a pull-up bar204(e.g., of sufficient strength to permit a user208to perform standard body-weight pull-ups) such as, for example, that may be part of a gym rack or other exercise equipment, a playground gym, or the like. In the embodiment shown, suspension members38aand38bare configured to be coupled (and are shown coupled) to the supporting structure via connectors94and98(e.g., the carabiners94and98can be hooked around bar204). In other embodiments, suspension members38aand38bcan be wrapped around the bar and the carabiners94and98each hooked around the respective suspension members38aor38b(or any other structure, pole, and/or the like), carabiners94and98can be hooked to each other such that suspension members38aand38bcooperate to loop around the bar (or any other structure, pole, and/or the like), and/or suspension members38aand38bcan be coupled to the supporting structure in any other way that permits the apparatus to function as described in this disclose (e.g., eye-hooks can be secured to a supporting beam, such as, for example, the top of a suitably stable door frame). Some embodiments of the present apparatuses and systems include a supporting structure (e.g.,200) having a bar (e.g.,204) to which the one or more suspension members can be coupled.

In some embodiments, the one or more suspension members are coupled to in substantially-fixed relation to strap14, with a part of the strap between first and second points at which the one or more suspension members is coupled to the strap forming a U-shape212onto which the feet of a user208can be positioned (and are shown positioned) such that elastic portion34can assist the user in performing pull-ups from the supporting structure. For example, in the embodiment shown, first and second suspension members38aand38bare coupled in fixed relation to the strap (e.g., such that the part of the respective suspension member does not move longitudinally relative to the strap) via adjusters66and70that are in the second configuration discussed above (in which adjusters66and70resist sliding relative to the strap).

Examples of methods of using the apparatus can comprise any one or more of:coupling (e.g., as shown) the one or more suspension members (e.g.,38aand38b) to a supporting structure (e.g.,200) with a part of strap14between first and second points42and46at which the one or more suspension members are coupled to the strap forming a U-shape212;adjusting the position of the one or more suspension members (e.g.,38aand38b) relative to at least one of first end26of the strap and second end30of the strap;positioning at least one foot of a user208onto U-shape212(FIGS. 3-4);performing pull-ups (FIG. 4) such that the elastic portion assists the user in performing the pull-ups;positioning the trunk (e.g., chest) of a user208onto U-shape212(FIGS. 5-8);performing push-ups such that the elastic portion assists the user in performing the push-ups (FIGS. 6 and 7); and/oradjusting (e.g., after positioning at least one foot of the user and/or after the use performs one or more pull-ups), the position of the one or more suspension members (e.g.,38aand38b) relative to at least one of first end26of the strap and second end30of the strap to increase the length of strap between first and second points42and46at which the one or more suspension members are coupled to the strap.

The position of the one or more suspension members (e.g.,38aand38b) relative to at least one of first end26of the strap and second end30of the strap can be adjusted with adjuster66and/or adjuster70. For example, in the embodiment shown when tension is placed on strap below adjuster66(as indicated by arrow216), adjuster66will resist sliding relative to the strap if adjuster is in the configuration shown (second configuration described above). However, if the tab or handle portion (320) of adjuster66is lifted relative to the strap, as described below, adjuster66will be permit a user to slide the adjuster (and thereby suspension member38a) relative to strap14, to adjust the position of suspension member38arelative to first end of strap26. Adjuster70can function in a similar manner to adjust the position of suspension member38brelative to second end30. If the length of strap14that is between points42and46is adjusted such that U-shape does not touch surface (e.g., ground)220(or touches surface220less than it would if a user positioned one his or her feet onto the U-shape), then when the user positions one or more feet onto the U-shape, as shown, elastic portion34will stretch when the user positions one or more feet onto the U-shape (and provide a force in upward direction228that can assist the user in performing push-ups). In this way, the shorter the length of strap14that is between points42and46(such that elastic portion34stretches by a greater amount, and thereby causes a relatively greater tension in the elastic portion, when the user steps onto U-shape212of the strap), the greater the assistive force; and the longer the length of strap14that is between points42and46(such that elastic portion34stretches by a relatively smaller amount, and thereby causes a relatively smaller tension in the elastic portion, when the user steps onto U-shape212of the strap), the less the assistive force.

As illustrated inFIG. 4, if one or more feet of a user (or knees, such as if the user is kneeling or lacks one or both lower legs) are positioned onto U-shape212of the strap, pull-ups can be performed such that elastic portion34assists the user in performing the pull-ups. As a user's strength and/or skill improves over time, the length of strap14between points42and46can be increased (e.g., points42and46can be moved closer to respective ends26and30) such that the assistive force provided by elastic portion34decreases, and the user must provide greater force to complete the pull-up (e.g., eventually performing full-body-weight pull-ups without assistance). As such, embodiments of the present apparatus can enable a user without sufficient strength and/or skill to full-body-weight pull-ups to perform pull-ups with a full range of motion. After completion of the assisted pull-ups, the position of the suspension members relative to the strap can be adjusted (via adjusters66and70) to increase the length of the strap between adjusters66and70and thereby reduce (e.g., and eliminate) tension in elastic portion34before the user's foot or feet are removed from the U-shape (212).

As illustrated inFIGS. 6 and 7, if the trunk (e.g., chest) of a user is positioned onto U-shape212of the strap, push-ups can be performed such that elastic portion34assists the user in performing the push-ups. As a user's strength and/or skill improves over time, the length of strap14between points42and46can be increased (e.g., points42and46can be moved closer to respective ends26and30) such that the assistive force provided by elastic portion34decreases, and the user must provide greater force to complete the push-up (e.g., eventually performing full-body-weight push-ups without assistance). As such, embodiments of the present apparatus can enable a user without sufficient strength and/or skill to full-body-weight push-ups to perform push-ups with a full range of motion. As shown inFIGS. 5 and 6, at least one hand (e.g., both hands) of the user can be supported by handle18and/or handle22while performing the push-ups (e.g., such that the user will engage a greater number of stabilizer muscles because handles18and22are unstable (e.g., can move laterally in any direction if not stabilized by the user)); and/or at least one foot (e.g., both feet) of the user can be supported by the ground. As shown, inFIGS. 7 and 8, at least one hand (e.g., both hands) of the user can be supported by the surface (e.g., ground) while performing the push-ups; and at least one foot (e.g., both feet) of the user can be supported by handle18and/or handle22while performing the push-ups (e.g., such that the user will engage a greater number of stabilizer muscles because handles18and22are unstable (e.g., can move laterally in any direction if not stabilized by the user)).

Apparatus10can be used in a variety of other ways and for a variety of other exercises as well. For example, with suspension members38aand38bcoupled to bar200, as shown, U-shape212can be extended horizontally such that a user208can stand in U-shape212of the strap and perform resisted running (such that elastic portion34resists motion of the user in the direction in which the user would travel if not held back by the strap). Elastic portion34can thus provide resistance for this and various other exercise (e.g., as opposed to providing assistance, as described above for the pull-ups and push-ups depicted inFIGS. 3-8).

FIGS. 9A-9Kdepict various views of components of one embodiment of an assembled adjuster (e.g.,66or70) suitable for use with some embodiments of the present apparatuses. More specifically,FIG. 9Adepicts a perspective view of the overall adjuster assembly66,FIGS. 9B-9Ddepict various views of an adjuster frame or body300,FIGS. 9E-9Gdepict various views of a handle extension member304,FIGS. 9H-9Idepict side and end views of a locking bar308,FIG. 9Jdepicts a cutaway side view of adjuster frame300and locking bar308of adjuster66coupled to strap14and suspension member38ato illustrate the function of adjuster66; andFIG. 9Kdepicts a cutaway side view of a locking member400coupled to strap14and suspension member38ain addition to adjuster66to illustrate the function of locking member400. AlthoughFIGS. 9A-9Kare described with reference to adjuster66, the structure and function of adjuster70are substantially identical in at least some embodiments. Additionally, dimensions (in inches) are shown for one non-limiting example of adjuster66.

As shown inFIGS. 9B-9D, in the embodiment shown, adjuster frame or body300includes a substantially-planar portion312, a pair of spaced-apart substantially-planar wing portions316that are not parallel (e.g., substantially perpendicular, as shown) to main portion312, and a handle or tab portion320extending from main portion312. In this embodiment, main portion312includes an elongated opening324disposed in a first plane (the plane of main portion312) that has a width328at least as large as (e.g., larger than) the width of strap14. In this embodiment, body or frame300also includes a pair of spaced-apart slots332disposed in a second plane (the respective planes of wing portions316). As shown, each slot332is angled along its length relative to main portion312, such that the distance between the slot and main portion312decreases as the distance from tab portion320increases. In this embodiment, handle portion320also includes a plurality of holes336for coupling body300to handle extension member304, as described below.

As shown inFIGS. 9E-9G, handle extension portion304includes a cavity340for receiving body300, and a plurality of holes344configured to align with holes336of body300(such that screws can be threaded through holes336and into handle extension member304). In this embodiment, handle extension member304has an elongated shape configured to extend a distance348past tab portion320of body300(if member304is coupled to body300) to provide a lever that decreases the amount of force needed to actuate the adjuster66, as described below. In this embodiment, cavity340also includes an upper curved portion352that is configured to permit strap14to slide within the adjuster66when member304is coupled to body300.

As shown inFIGS. 9H and 9I, in this embodiment, locking bar308includes a main cylindrical portion356(e.g., having a width at least as large as the width of strap14) and rectangular end portions360that are sized and/or shaped to be slidably received in slots332and prevent bar308from rotating relative to body300. Rod308is configured to extend between and into (i.e., such that rectangular end portions360extend into) each of slots332such that the rod is slidable relative to the body. The outer surface364of cylindrical portion can be knurled or otherwise textured to resist sliding of strap14relative to bar308when the adjuster is in a locked configuration, as described below.

FIG. 9Jdepicts locking bar308coupled to body300with strap14and suspension member38acoupled to the adjuster. In the embodiment shown, a portion of suspension member38aextends through opening324and around a front part of portion312of body300(opposite tab portion320), and is doubled over and affixed to itself (e.g., with stitches, adhesive, rivets, and/or the like) to form a loop, as shown. In the embodiment shown, strap14extends through opening324twice and around rod308. As described above, adjuster66is configured such that (i) if the adjuster is in a first (unlocked) configuration, the adjuster will slide relative to strap14; and (ii) if the adjuster is in a second (locked) configuration, the adjuster will resist sliding relative to the strap. InFIG. 9J, the adjuster is shown in the second (locked) configuration. More specifically, bar308is disposed at the end of the slot that is closest to main portion312of body300, such that if there is tension in direction368on the portion of strap14between adjuster66and elastic portion34, bar308will remain in the depicted position to lock strap against body14and thereby resist sliding of the strap relative to the adjuster66. To permit sliding of strap14relative to the adjuster (e.g., relative to bar308and body300), handle portion320is moved in direction372away from strap14to cause bar308to slide away from handle portion320and permit strap to slide relative to bar308and body300. The rate at which strap14is permitted to slide relative to adjuster can be adjusted by changing the distance between handle portion320and strap14(e.g., the further handle portion320is lifted in direction372relative to strap14, the faster strap14will be permitted to slide relative to the adjuster).

Referring now toFIGS. 9K and 10A-10B, an optional locking member400is shown for use with adjuster66to lock strap14relative to adjuster66even in the absence of tension in direction368on the portion of strap14between elastic portion34and adjuster66(e.g., if a user is using handle18without engaging elastic portion34). In the embodiment shown, locking member400includes a substantially planar body404with two spaced-apart slots408and412each having a width equal to or larger (e.g., 5% larger) than the width of strap14. Body404also includes opening416and420in each end to permit strap14to be inserted into the respective slot408or412. As shown inFIG. 9K, locking member400can be coupled to strap14such that the loop that couples suspension member38ato body300is also disposed in slot408. In some embodiments, opening416is omitted such that suspension member38is non-removably disposed within slot408. In use, once the position of adjuster66relative to strap14is set to a desired position, both sections of strap14(on either side of bar308) can be pinched and/or otherwise inserted through opening320into slot312such that strap14extends twice through slot412. In the configuration shown inFIG. 9K, locking member400helps to resist sliding of strap14relative to adjuster66, even without tension in direction368on the portion of strap14between elastic portion34and adjuster66(e.g., with tension only in direction376on the portion of strap between adjuster66and handle18). In other embodiments, any suitable locking member can be used to resist sliding of strap14relative to adjuster66in the absence of tension in direction368on the portion of strap14between elastic portion34and adjuster66.

FIG. 11depicts a front view of an alternate handle18athat can be used with the present apparatuses. AlthoughFIG. 11is described with reference to handle18a, the structure of both handles is substantially identical in at least some embodiments. In the embodiment shown, strap14extends through the longitudinal opening of a substantially-rigid piece of circular tubing450and the strap is affixed to itself (e.g., with stitches, adhesive, rivets, and/or the like) such that tubing450and strap14cooperate to define a loop, as shown. In some embodiments, strap14extends twice through tube450to form a second flexible loop454. In other embodiments, loop454comprises a separate loop of material that also extends through tube450.

FIGS. 12A and 12Bdepict perspective and side views, respectively, of a second embodiment10aof the present apparatuses. Apparatus10ais similar in several respects to apparatus10, and similar reference numerals will therefore be used to refer to elements of apparatus10athat are similar in at least some respects (e.g., form and/or function) to elements of apparatus10. For example, apparatus10aincludes a strap14ahaving an elastic portion34a, and one or more suspension members (e.g., two suspension members38c,38d). As such, the differences between apparatus10aand apparatus10will therefore primarily be described here. Apparatus10adiffers from apparatus10in two primary respects. First, in the embodiment shown, apparatus10aincludes a first suspension member38cconfigured to be coupled to a supporting structure (e.g.,204) and to strap14at a first point between elastic portion34aand first handle18; and a second suspension member38dconfigured to be coupled to a supporting structure (e.g.,204) and to strap14a(substantially-inelastic segment58a) at a second point between elastic portion34aand second handle22. However, the structure of suspension members38c,38ddiffers relative to suspension members38a,38b. Second, in the embodiment shown, apparatus10aincludes an elastic segment50aof strap14athat is coupled to substantially-inelastic segments54a,54bby quick-release connector assemblies to facilitate removal and replacement of elastic segment50a. While both of these differences are included in the depicted embodiment of apparatus10a, it should be understood that either feature may individually or separately be incorporated into other embodiments (e.g., an embodiment of the present apparatuses can include suspension members38c,38dbut not the quick-release connectors, or vice versa).

FIGS. 13A-13Cdepict various enlarged views of a suspension member38c(which, in the depicted embodiment, is identical to suspension member38d) of apparatus10a. In the embodiment shown, suspension member38ccomprises: a first flexible member500(e.g., a canvas or other webbing or strap material) configured to be adjustably coupled to strap14(e.g., to first substantially inelastic segment54a), such as, for example, via adjuster66. In this embodiment, suspension member38cfurther comprises a first bracket504having a width508, a height512, and a thickness516that is smaller than each of width508and height512. As shown, first bracket504can be coupled to flexible member500by looping first flexible member500through two slots520in first bracket504such that flexible member500loops around a portion of first bracket504between slots520, as shown. In this embodiment, suspension member38cfurther comprises a second bracket524including a slot528having a width532and a height536. In this embodiment, width532is less than width508of first bracket504and is larger than height512of first bracket504, and height536is larger than thickness516of first bracket504and is smaller than height512of first bracket504. As a result, a side of first bracket504defined by width512can be inserted through slot528and bracket504then rotated such that width508of first bracket is aligned with (smaller) width532of slot528height512of first bracket504is aligned with height536of slot528to prevent bracket504from passing back through slot528, as shown inFIGS. 13B-13C.

In the embodiment shown, suspension member38cfurther comprises a second flexible member540(e.g., a canvas or other webbing or strap material) coupled to second bracket524and defining a loop through which second bracket524will fit. For example, in the embodiment shown, second bracket524includes a second slot544through which second flexible member540extends. In this embodiment, second flexible member540extends through slot544and is doubled back and stitched to itself at an overlapping portion548, such that second flexible member540defines an openable loop at end548. In this embodiment, end548of second flexible member544can be wrapped around a bar (e.g.,204) and second bracket524can then be passed through the loop at second end548to “tie” second flexible member540around the bar. Additionally, the height of second bracket524relative to the bar can be adjusted by simply wrapping second flexible member540around the bar multiple times before passing second bracket524through the loop at second end548. Once second flexible member540is secured to the bar in this way, first bracket504can be inserted through slot528of second bracket524to secure first flexible member500and substantially-inelastic segment54arelative to the bar.

FIGS. 14-19depict various details of an elastic strap segment50aand its connection to inelastic strap segments of apparatus10a. In the embodiment shown, first substantially inelastic segment54aand second substantially inelastic segment58aare each configured to be removably coupled to elastic segment50a. For example, in the embodiment shown, apparatus10aincludes a first and second connector assemblies62aconfigured to releasably coupled elastic segment50to substantially-inelastic segments54a. In the embodiment shown, first connector assembly62a(between elastic segment50aand first substantially-inelastic segment54a) comprises: a first connector600clamped to elastic segment50awithout penetrating the elastic segment; and a second connector604coupled to first substantially-inelastic segment54a; where second connector604is configured to be releasably coupled to first connector600. Second connector assembly62a(between elastic segment50aand second substantially-inelastic segment58a) is substantially similar to the first connector assembly, and it should therefore be understood that the following description of the depicted embodiment of the first connector assembly is representative of both connector assemblies62a.

In the depicted embodiment, second connector604includes a slot606through which first substantially-inelastic segment54ais looped and then doubled back and stitched to itself to couple segment54ato second connector604. In this embodiment, second connector604includes a female connector having a receptacle608configured to receive a barbed tab612of first connector600, and a pair of opposing, spring-loaded buttons616that can be depressed to release tab612of first (male) connector600when first connector600and second connector604are coupled together as shown inFIGS. 12A and 12B.

In the embodiment shown, first connector600includes a first member620having a planar main portion624, a pair of flanges628extending away from main portion624, and a pair of tabs632extending toward one another from flanges628. In this embodiment, main portion624, flanges628, and tabs632define a channel between flanges628, as shown. In this embodiment, an upper portion of each flange628includes a hole636that can receive a rivet or other fastener (688), as described in more detail below. In the embodiment shown, main portion624includes a tab640, and a pair of elongated protrusions644each with a length extending across a majority of main portion644between flanges628, and each of tab640and protrusions644extend away from main portion624in the same general direction (e.g., parallel to) flanges628. In this embodiment, protrusions644is each rounded and does not include sharp edges.

In the embodiment shown, first connector600also comprises a second member648configured to be coupled to first member644. In the embodiment shown, first member648includes a planar main portion652, a pair of flanges656extending away from main portion652, and a pair of extension660that extend from flanges656beyond an adjacent portion of main portion652, as shown. In this embodiment, main portion652and flanges656define a channel between flanges656, as shown. In this embodiment, an upper portion of each flange656includes a hole664that can receive a rivet or other fastener (688), and a second hole668that can receive a pin (684) extending between flanges656, as described in more detail below. In the embodiment shown, main portion652includes a plateau672, and an elongated protrusion676with a length extending across a majority of plateau672, which itself extends across a majority of main portion644between flanges628. In the embodiment shown, each of plateau672and protrusions676extend away from main portion652in the same general direction (e.g., parallel to) as flanges656. In this embodiment, protrusions676is each rounded and does not include sharp edges. As described in more detail below, second member648is configured for use with elastic bands or straps that have a relatively small thickness (e.g., less than 0.375 inches, such as, for example, 0.25 inches, 0.125 inches).FIG. 18depicts an alternative second member648athat is configured for use with elastic bands or straps that have a relatively large thickness (e.g., greater than 0.25 inches, such as, for example, 0.375 inches). In this embodiment, second member648ais substantially similar to second member648, with the exception that second member648aomits holes668and plateau672, and projection676itself extends across a majority of main portion652abetween flanges656a.

FIG. 19depicts an exploded view of first connector600. In the embodiment shown, a first end680of the elastic band or webbing is inserted between flanges628of first member620(and between tabs632and main portion624) until end680contacts tab640. Second member644is then disposed with protrusion676facing and between protrusions644of first member620, and with each extension660between main portion624and a different one of tabs632of first member624. A pin684can be disposed through holes668of second member648, and first member624and second member648can then be pressed together such that holes664of second member648align with holes636of first member620, such that end680of the elastic band is clamped between protrusions644and676. Rivets688or other connectors can then be inserted through holes648and636to hold first member620and second member648together and prevent end680from pulling away from connector600. In the embodiment shown, first connector is configured to be coupled to an elastic band having a medium thickness692of 0.25 inches. When connector600is used with an elastic band having a smaller thickness (e.g., 0.125 inches), first end680of the elastic band can be doubled over pin684(with a fold in the elastic band adjacent to and/or contacting tab640) before joining first member620and second member648. When connector600is instead used with an elastic band having a larger thickness (e.g., 0.375 inches), second member648acan be used in place of second member648, and pin684omitted entirely.