RESISTANCE DEVICE, SYSTEM, AND METHOD FOR USE WITH AN EXERCISE APPARATUS

[0001] This application is a continuation-in-part and claims priority to U.S. application Ser. No. 13/926,452 filed on Jul. 29, 2013, which claims priority to U.S. application Ser. No. 13/890,083, filed on May 8, 2013, which claims priority to U.S. Application No. 61/644,238, filed on May 8, 2012; the entirety of these applications are incorporated by reference.

[0002] The present invention relates to resistance members, and, more particularly, to a resistance device, system, and method for use with an exercise apparatus.

[0003] Wheeled exercise devices are known for use in exercising different muscle groups of the upper body and torso in a prone position. U.S. Pat. No. 5,261,866 to Mattox discloses a wheeled exercise device which employs a central wheel rotatably mounted on an axle. A pair of handgrips is telescopically mounted on the axle ends. A length of elastic tubing is telescopically connected mounted to the opposite ends of the axle. A pair of foot pads is adjustably mounted on the elastic tubing. The pads may be moved to different points along the length of the tubing to accommodate users of different size and strength. The user kneels or stands on the pads, grips the hand grips, and rolls the wheel and axle forward, away from, the pads until the user is in the prone position. Thereafter, the user rolls the axle wand wheel backward, until the starting position is reached.

[0004] U.S. Pat. Ser. No. 6,203,476 to Wang et. al. describes a physical exercising apparatus which includes a first transverse frame bar having a longitudinal center through hole, a second transverse frame bar, two wheels respectively mounted on wheel holders for supporting the second transverse frame bar on the floor, and a single elastic cord member inserted through the longitudinal center through hole on the first transverse frame bar and connected between the wheel holders for stretching by the user when the user holds the first transverse frame bar in place and moves the second transverse frame bar relative to the first transverse frame bar.

[0005] While the foregoing exercise devices offer some utility, the devices are limited in use for outward extension of the handle portion against the resistance of the elastic tubing. Thus, such devices are limited in capability for use in exercising the muscle groups of the lower torso and legs and aerobic conditioning. In addition, such devices are mostly incapable of achieving high degrees of resistance. Thus, what is needed is an exercise apparatus which uses a pair of wheeled straight axle members connected at the opposite ends thereof by one or more resistance bands so that when exercising in the prone position the user is capable of exercising both the upper and lower muscle groups and enhancing aerobic conditioning. The present invention satisfies these needs.

[0006] It is therefore an object of the present invention to provide a wheeled exercise device which combines isotonic exercise of the upper and lower muscle groups with aerobic conditioning in a fluid and seamless movement.

[0007] To overcome the problems associated with the prior art and in accordance with the purpose of the present invention, as embodied and broadly described herein, briefly, a resistance device for use with an exercise apparatus is provided. The resistance device includes a resistance member having a first portion and a second portion separated by a length, a first coupling member defining a first channel sized to receive the resistance member along the length of the resistance member, and a second coupling member disposed a distance from the first coupling member, the second coupling member defining a second channel sized to receive at least one of the first portion and the second portion of the resistance member. The first coupling member and the second coupling member are configured to couple to a portion of an exercise apparatus.

[0008] In accordance with a feature of the present invention, the second coupling member of the resistance device includes a u-shaped body having a top portion and a bottom portion opposite the top portion and the second channel is disposed along the top portion of the u-shaped body.

[0009] In accordance with a further feature of the present invention, the second coupling member defines a third channel disposed along the bottom portion of the u-shaped body.

[0010] In accordance with yet another feature of the present invention, the first portion of the resistance member includes a first terminal end and the second portion of the resistance member includes a second terminal end.

[0011] In accordance with yet another feature, the first channel is substantially enclosed and the second channel includes an upper surface area exposed to an outside ambient environment.

[0012] In accordance with yet another feature, at least one of the first portion and the second portion is slideably coupled within the second channel.

[0013] In accordance with a further feature of the present invention, the resistance member is of a predetermined resistance value substantially equal to a positive integer.

[0014] In accordance with a further feature, an embodiment of the present invention includes a resistance system for use with an exercise apparatus having a plurality of resistance devices, each resistance device including a resistance member having a distal portion and a proximal portion separated by a length, a first coupling member sized to couple to the resistance member along the length of the resistance member, and a second coupling member disposed a distance from the first coupling member, the second coupling member defining a resistance member opening sized to receive at least one of the distal portion and the proximal portion of the resistance member.

[0015] In accordance with yet another feature of the present invention, the resistance system includes a roller sized and shaped to mate with at least one of the first coupling member and the second coupling member.

[0016] In accordance with yet another feature of the present invention, the plurality of resistance devices each include a predetermined resistance value having a color corresponding to the predetermined resistance value.

[0017] In accordance with another feature of the present invention, the distal portion and the proximal portion of the resistance member each include a terminal end.

[0018] In accordance with another feature of the present invention, the first coupling member includes a u-shaped body defining a resistance member channel sized to receive a portion of the length within the resistance member channel.

[0019] In accordance with an additional feature, the resistance member channel is substantially enclosed.

[0020] In accordance with a further feature, the second coupling member includes a u-shaped body having a top portion and a bottom portion and the resistance member opening is disposed along at least one of the top portion and the bottom portion of the u-shaped body.

[0021] In accordance with a further feature, the at least one of the distal portion and the proximal portion of the resistance members is slideably coupled with the resistance member opening.

[0022] In accordance with the present invention, a method of coupling a resistance system to an exercise apparatus is disclosed that includes providing a plurality of resistance devices, the plurality of resistance devices each including a resistance member having a first portion and a second portion separated by a length, a first coupling member sized to couple to the resistance member along the length, and a second coupling member disposed a distance from the first coupling member, the second coupling member defining a resistance member opening sized to receive at least one of the first portion and the second portion of the resistance member. The method also includes providing an exercise apparatus including a first axle and a second axle, coupling the first coupling member to the resistance member along the length, coupling the first coupling member to the first axle, coupling the second coupling member to the second axle, and coupling the at least one of the first portion and the second portion of the resistance member within the resistance member opening of the second coupling member.

[0023] In accordance with an additional feature, the method may also include providing a first roller and a second roller, coupling the first roller to the first axle, and coupling the second roller to the second axle.

[0024] In accordance with a further feature, the method may also include providing a third coupling member sized to couple to a second one of the resistance members along the length, and a fourth coupling member disposed a distance from the third coupling member, the fourth coupling member defining a resistance member opening sized to receive at least one of the first portion and the second portion of the second one of the resistance members. The method also includes coupling the third coupling member to the second one of the resistance members along the length, coupling the third coupling member to the first axle, coupling the fourth coupling member to the second axle, and coupling the at least one of the first portion and the second portion of the second one of the resistance members within the resistance member opening of the fourth coupling member.

[0025] In accordance with yet another feature, the method may also include adjusting a position of the at least one of the first portion and the second portion of the resistance member within the resistance member opening of the second coupling member.

[0026] In accordance with an additional feature, the method may also include exchanging the resistance member for a second one of the resistance members, the resistance member having a predetermined resistance value different than a predetermined resistance value of the second one of the resistance members.

[0027] Additional advantages of the present invention will be set forth in part in the description that follows and in part will be obvious from that description or can be learned from practice of the invention. The advantages of the invention can be realized and obtained by the method particularly pointed out in the appended claims.

[0028] Although the invention is illustrated and described herein as embodied in a resistance device, system, and method for use with an exercise apparatus, it is, nevertheless, not intended to be limited to the details shown because various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims. Additionally, well-known elements of exemplary embodiments of the invention will not be described in detail or will be omitted so as not to obscure the relevant details of the invention.

[0029] Other features that are considered as characteristic for the invention are set forth in the appended claims. As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one of ordinary skill in the art to variously employ the present invention in virtually any appropriately detailed structure. Further, the terms and phrases used herein are not intended to be limiting; but rather, to provide an understandable description of the invention. While the specification concludes with claims defining the features of the invention that are regarded as novel, it is believed that the invention will be better understood from a consideration of the following description in conjunction with the drawing figures, in which like reference numerals are carried forward. The figures of the drawings are not drawn to scale.

[0030] Before the present invention is disclosed and described, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. The terms “a” or “an,” as used herein, are defined as one or more than one. The term “plurality,” as used herein, is defined as two or more than two. The term “another,” as used herein, is defined as at least a second or more. The terms “including” and/or “having,” as used herein, are defined as comprising (i.e., open language). The term “coupled,” as used herein, is defined as connected, although not necessarily directly, and not necessarily mechanically. The term “providing” is defined herein in its broadest sense, e.g., bringing/coming into physical existence, making available, and/or supplying to someone or something, in whole or in multiple parts at once or over a period of time.

[0031] As used herein, the terms “about” or “approximately” apply to all numeric values, whether or not explicitly indicated. These terms generally refer to a range of numbers that one of skill in the art would consider equivalent to the recited values (i.e., having the same function or result). In many instances these terms may include numbers that are rounded to the nearest significant figure. In this document, the term “longitudinal” should be understood to mean in a direction corresponding to an elongated direction of the damper assembly of the wheeled exercise apparatus from the first axle to the second axle.

[0050] Unless specifically defined otherwise, all technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0051] Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are now described. Reference now will be made in detail to the presently preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like numerals represent like features.

[0052] The present invention provides a wheeled exercise apparatus 10 for concurrent upper and lower body isotonic exercise combining functionality, strength, power, and cardiovascular health while exercising in a prone or upright position. The apparatus 10 includes at least two resistance bands 12, 13. A first and a second straight axle 20, 21 include a transverse pair of wheeled assemblies 30 on opposite ends. The first and second straight axles 20, 21 are also connected at the opposite ends by the resistance bands 12, 13. At least one pedal support member 23 is connected to the second straight axle 21 between the wheeled assemblies 30 and the resistance bands 12, 13.

[0053] The first and the second straight axles 20, 21 are desirably constructed of an alloy, but may be constructed of any metal or plastic material in the form of a bar, tube or any combination thereof which is well known in the art. The straight axle ends may be constructed so that the end portions thereof include tubular sections 24, having clear holes, for receiving quick release pins 31 capable of securing the wheeled assemblies 30 in the tubular sections 24 of the straight axle ends. In this manner, the wheeled assemblies 30 are easily disconnected, or snap out of, from the straight axles 20, 21 when not in use.

[0054] The wheeled assemblies 30, may, but need not, include a clutch mechanism 35 for alternating engagement of the wheels, of the wheeled assemblies 30, between freewheel or unidirectional rotation. When engaged for unidirectional rotation the user is able to travel forward or backward while exercising in a prone position. In a preferred embodiment, the clutch 35 is a one-way freewheel clutch, such as a sprag clutch. A sprag clutch is a one-way freewheel clutch, and resembles a roller bearing, but instead of cylindrical rollers, non-revolving asymmetric figure-of-eight shaped sprags are used. When the unit rotates in one direction the rollers slip or free-wheel, but when a torque is applied with the feet or hands in the opposite direction, the rollers tilt slightly, producing a wedging action and binding because of a friction force.

[0055] The resistance bands 12, 13 are constructed at least in part of any resilient elastic material which is well known in the art. The resistance bands work form variety of strengthening exercises. The bands 12, 13 allow the user to target specific areas of the body and work the muscles from different angles for a more complete resistance workout. Both natural rubber latex and synthetic rubber may, but need not, be used in the manufacture resistance bands. In the preferred embodiment, the resistance bands are natural rubber so as to provide greater strength and elasticity. The resistance bands 12, 13 may, for example, be of a solid rubber construction, constructed of with a plurality of extruded rubber strands that are bound to make a strong band, with an over-layered band having a strip of rubber that overlaps, or with a layered on mandrills style construction of the band in layers, with each layer stopping at a different location along the band.

[0056] In one embodiment, the exercise apparatus includes a series of paired resistance bands in a system whereby each band provides an increasingly greater peak resistance, or work energy, when extended. This system provides a range of work energy throughout the elastic region so that the user is capable of building strength progressively, and to thereby reduce the risk of muscular injury or damage. To accommodate differing training motions, the user simply chooses a one or more of the bands, in the series of the system, to accommodate the desired predetermined work energy to be expended in each repetition of a set. This allows the user to customize each repetition in a given workout routine and progress through the increasing levels of work energy throughout the elastic region as his or her strength increases. The varying levels of work energy are desirably indicated with the system by unique color coding of the resistance bands in the series so that a predetermined level of resistance is easily identified by the user.

[0057] In FIG. 1, the straight axles 20, 21 include pulley shaped end portions 25 proximal to the wheel assemblies 30. The pulley shaped portions 25 define a groove, or channel, having a plurality of radially extending pin formations 26. With this embodiment, the resistance bands 12, 13 are constructed with ends thereof having a plurality of evenly spaced clear holes 14. Fasteners 16, such as a clip, or a hook and loop tie, are provided for securing the ends of the resistance bands into a looped formation with the inner margins of the looped ends, of the resistance bands 12, 13, secured to the radially extending pin formations 26 extending through the clear holes 14. In this manner, the bands 12, 13 are adjustable to a predetermined length depending on the physical stature of the user, to be exercised, or the desired exercise to be performed.

[0058] Drawing FIGS. 4, 5, 8, and 9 illustrate the presently preferred embodiment where the resistance bands 32, 33 are configured with tapered ends 36 so that the bands 32, 33 are capable of being releasably fastened to the clips 34. Here, the clips 34 are desirably constructed of a polymer such as injection or rotationally molded plastic with channels, or grooves for securing the bands 32.

[0059] The first straight axle 20 desirably includes a foam rubber handle grip 27 positioned centrally and extending between the pulley shaped formations. The second straight axle 21 preferably includes a pair of pedal shaped platforms 23, one each for supporting a foot of the user, rigidly attached to the second straight axle 21 with a threaded fastener, rivet, or weld. The pedal shaped platforms 23 desirably include straps 29 for holding the feet securely against the platforms 23 when the user is exercising in a pulling motion with respect to the platforms 23.

[0060] Referring now to FIGS. 4-7, in yet another embodiment of the present invention, the exercise apparatus 10 includes a damper assembly adapted to limit a range of said collapsing motion within the elastic region of the resistance bands 32, 33, upon release of an applied stress by the user. In this manner, the damper assembly provides a safety stop against the relative collapsing motion of the axles 20, 21 once the person exercising has reached a maximum sustainable exertion against the resistance bands with any given repetition.

[0061] The damper assembly includes a transverse damper frame which is capable of spanning a predetermined distance between the axles 20, 21. The frame has oppositely aligned end members which are joined end-to-end with a longitudinal member 41. The ends members are preferably configured as built up member including an interior truss-like member with polymer concave faced clips fastened to distal edges of the truss-like members. The end members have outer concave faced surfaces 40 which are adapted to openly couple with the axles 20, 21. Each of the end members have a distal face 40 which is configured to securely bias against the axles 20, 21, preferably at a midpoint thereof. The distal faces 40 may, but need not, be configured as a concave face having an arc interior diameter slightly greater that the exterior diameter of the axles 20, 21, With the presently preferred embodiment, the concave faces 40, which are positioned in alignment to receive the first axle 20, also include a pin or lever (not shown) which is operable to releasably secure the faces 40 of the end member to the first axle 20 so that the damper frame cooperates with the forward and backward rolling motion of the first axle 20 while exercising.

[0062] The damper assembly also includes a rolling horizontal support element 42. The support element has upper and lower surfaces, a vertical bracket 43, and a third axle and wheel assembly 44. The upper surface of the horizontal support 42 is adapted for supporting the ventral torso of the person while exerting a fully extended stress on the resistance bands 32, 33, in a prone position. The lower surface is rigidly connected to the longitudinal member 41. The vertical bracket 43 includes an upper portion and a lower portion. The upper portion is connected to the lower surface of the horizontal support 42, and the lower portion includes axially aligned clear holes adapted to receive the third axle and wheel assembly.

[0063] In use, the present invention allows the user a flexibility to exercise either in a confined space, or by locomotion in an open space, such as a large gymnasium or on an outdoor path including an incline. When exercising in a confined location, the wheeled assemblies 30 are disengaged, in a freewheeling condition, so that the user generally stays in the same position relative to the space, with the force of the bands 12, 13 returning each of the straight axles 20, 21 back into position with repetitive equal and opposite motions of the arms and legs. For locomotion, the user simply engages the one-way clutch and operates the first and second straight axles so that the expansive and contractive forces cause the entire device to travel, with each repetition, in a forward or rearward directions depending on the desired result.

[0064] The present invention may, but need not, be further adapted to include adjustable foot straps 29 so that the second straight axle may be inverted, with the user being capable of standing on the strap 29 and performing those exercises such as squats, military presses, curls, and/or triceps extensions. When performing such exercises it is desirable to un-snap and release the wheel assemblies from the tube ends of the straight axles for ease in use. However, when exercising in the prone position, with the hands gripping the first straight axle and the feet supported on the platform members, the wheel assemblies are snap locked back into their respective positions on opposing ends of the straight axles. In this manner, the present invention allows versatility in its capability to provide a complete isotonic body resistance and aerobic training system. The primary principal in burning calories, shredding fat and building muscle is rather basic with the more muscle fiber that is under stress for the longer period of time to equal the maximum amount of calories burned per unit time. When used for its primary purpose “in the prone position” the present invention forces the user to use every muscle in the lower body “just like doing squats”, and, at the same time, using every muscle in the upper body “just like military presses”. Most importantly, the motion of the wheels requires that the core be constantly engaged, like using an abdominal wheel as illustrated in the prior art, and accomplishes cardiovascular conditioning.

[0065] With reference now to FIG. 10, a resistance system 1000 for use with the wheeled exercise apparatus 10 is shown in a perspective view. The resistance system 1000 is not limited for use with the wheeled exercise apparatus 10; rather, the resistance system 1000 may be used with other exercise apparatuses as well, with or without wheels. FIG. 10 depicts the resistance system 1000 having a plurality of resistance devices 1002a-n configured to couple to the exercise apparatus 10, where the indicator “a-n” is intended to represent any number of resistance devices.

[0066] In one embodiment, each resistance device 1002a-n includes a resistance member 1004. The resistance member 1004 is defined in its broadest possible sense as an object used to resist, overcome, or bear force. Similar to the bands 12, 13 described above, the resistance members 1004 advantageously allow the user to target specific areas of the body and work the muscles from different angles for a more complete resistance workout. In one exemplary embodiment, the resistance member 1004 is a resistance band made of a resilient elastic material. In other embodiments, the resistance member 1004 may be made of another durable material suitable for undergoing repeated use without exhibiting signs of wear and tear, such as a high quality rubber, latex rubber, a natural latex material, and many others.

[0067] The resistance member 1004 may include a predetermined resistance value, e.g., 10 pounds, 20 pounds, 40 pounds, 60 pounds, etc. Advantageously, each resistance member 1004 provides an increasingly greater peak resistance or work energy when in use, allowing the resistance device 1002 to be tailored in accordance with the various strength levels of individual users. As an added advantage, as a particular user builds strength and endurance, the user can add additional resistance members 1004 to the exercise apparatus 10 and/or exchange one resistance member 1004 for another resistance member 1004 having a greater predetermined resistance value. FIG. 10 depicts three resistance devices 1002a-n coupled to the axles 20, 21 on both sides of a damper assembly 1006. In other embodiments, more or less than three resistance members 1004 may be utilized on each side of the damper assembly 1006.

[0068] As mentioned above, and similar to the bands 12, 13, the resistance member 1004 may be of a color corresponding to the predetermined resistance value. For example, a yellow resistance member 1004 may correspond to the resistance member providing 10 pounds of resistance, a green resistance member 1004 may correspond to the resistance member providing 20 pounds of resistance, and so on.

[0069] With reference now to FIG. 11, which depicts a perspective view of the resistance device 1002, the resistance member 1004 can be seen having a first portion 1100, i.e., distal portion, and a second portion 1102, i.e., proximal portion, separated by a length 1104. In a preferred embodiment, the first and second portions 1100, 1102 each include a terminal end 1106, 1108, respectively. In other embodiments, the first and second portions 1100, 1102 may form a continuous loop.

[0070] In order to couple the resistance device 1002 to a portion of the exercise apparatus 10 (FIG. 10), e.g., the axle 20 or the axle 21 (FIG. 10), the resistance device 1002 includes a first coupling member 1110 defining a first channel 1112, i.e., resistance member channel, sized to receive the resistance member 1004. More specifically, the first coupling member 1110 is positioned at a location along the length 1104 of the resistance member 1004. The location may vary according to the overall length 1104 of the resistance member 1004 or in accordance with other design features of the resistance member 1004.

[0071] In use, such as when the user is assembling the resistance device 1002, the user can simply insert the resistance member 1004 within the first channel 1112. To minimize the likelihood of the resistance member 1004 moving within the first channel 1112, the first channel 1112 is depicted as being substantially enclosed. The term “substantially enclosed” is defined as to surround on all sides and may include a nominal opening on one or more sides. In other embodiments, the first channel 1112 may be completely enclosed.

[0072] With reference now to FIGS. 10 and 12, in order to couple the resistance device 1002 (FIG. 10) to the opposing axle 20, 21 the resistance device 1002 includes a second coupling member 1200 (FIG. 12) disposed a distance from the first coupling member 1110. The distance between the first coupling member 1110 and the second coupling member 1200 will naturally increase and decrease as the user operates the exercise apparatus 10 (FIG. 10) in the rolling extending and collapsing motion.

[0073] The second coupling member 1200 can be seen having a u-shaped body 1202 configured to mate with the axle 20 (FIG. 10). The u-shaped body 1202 is depicted having a top portion 1204 and a bottom portion 1206 which may be mirror images of each other. In other embodiments, the top and bottom portions 1204, 1206 may be different shapes with respect to each other.

[0074] The u-shape facilitates in securing the second coupling member 1200 around the axle 20 when using the exercise apparatus 10, yet still allows the user to easily remove the second coupling member 1200 when desired, such as during storage. FIG. 12 depicts the first coupling member 1110 also having a u-shaped body 1208. Alternative shapes of the bodies 1202, 1208 include but are not limited to, round, square, or another shape that allows the first and second coupling members 1110, 1200 to securely couple to the axles 20, 21.

[0075] In some embodiments, the first coupling member 1110 and the second coupling member 1200 may include identical or nearly identical features with respect to each other. Said another way, the first coupling member 1110 may include the features described with respect to the second coupling member 1200 and the second coupling member 1200 may include the features described with respect to the first coupling member 1110.

[0076] With reference to FIG. 13, in one embodiment, the second coupling member 1200 defines a second channel 1300, i.e., second resistance member channel, disposed along the top portion 1204 of the second coupling member 1200. The second channel 1300 is sized to receive the first portion 1100 or the second portion 1102 of the resistance member 1004 within the second channel 1300. In the same vein, as best seen in FIG. 14, the second coupling member 1200 is depicted defining a third channel 1400 disposed along the bottom portion 1206 of the second coupling member 1200. A person of ordinary skill in the art can appreciate that the second channel 1300 may be disposed on the bottom portion 1206 and the third channel 1400 may be disposed on the top portion 1204. Said another way, the top portion 1204 may be the bottom portion 1206, depending on the respective orientation of the second coupling member 1200 with respect to a ground surface. The second and third channels 1300, 1400 may be referred to herein as openings.

[0077] When assembling the resistance device 1002 (FIG. 10), or when the user desires to exchange the resistance members 1004, the user can simply insert the resistance member 1004 within the second and third channels 1300, 1400. This is due in part to the second and third channels 1300, 1400 including an upper surface area 1302, 1402, respectively, exposed to an outside ambient environment. Such exposure also advantageously allows the user to slide the resistance member 1004 within the channels 1300, 1400 to shorten or lengthen the distance between axles 20, 21 (FIG. 10) in accordance with the user's preference and strength. Said another way, with brief reference to FIG. 14, in conjunction with FIG. 15 depicting a close-up perspective view of the second coupling member 1200, the user may shorten the portion of the terminal end 1106 of the resistance member 1004 that extends beyond the axle 20, thereby making it easier to operate the apparatus in the extended and collapsing motion due to the decrease in length between the axles 20, 21. Such advantageous feature is also conducive for adjusting the exercise apparatus 10, more specifically, the distance between axles 20, 21, in accordance with the height of the user. In other embodiments, the first channel (FIG. 13) and/or the second channel 1400 (FIG. 14) may be enclosed.

[0078] With reference now to FIG. 15, a plurality of second coupling members 1200a-n are depicted having an indicia 1500 identifying the predetermined resistance value. In one embodiment, the predetermined resistance value is substantially equal (e.g., within 5-20% deviation) to a positive integer value. More specifically, the predetermined resistance value is a weight rounded to the nearest whole number, e.g., 10 pounds, 20 pounds, 40 pounds, 60 pounds, etc., as mentioned above. In other embodiments, the predetermined resistance value may increase in increments, e.g., 0.5 pounds that are not equal to a positive integer value.

[0079] With reference now to FIG. 16, an enlarged perspective view of the second coupling member 1200 is depicted coupled to the axle 20. More specifically, in one embodiment, the resistance system 1000 (FIG. 1) includes a roller 1600 sized and shaped to mate with the first coupling member 1110 and the second coupling member 1200 and the axle 20. For brevity, the roller 1600 will be described herein in conjunction with the second coupling member 1200. Advantageously, in order to increase safety for the user when using the exercise apparatus 10, the roller 1600 prevents the second coupling member 1200 from sliding along the axle 20.

[0080] FIG. 16 depicts the roller 1600 having a pair of opposing sidewalls 1602, 1604 separated by a length 1606. The length 1606 is slightly longer, than a second coupling member length 1608, which allows the second coupling member to securely fit between the opposing sidewalls 1602, 1604. The term “slightly longer” is defined herein as within less than ½-¾ of an inch. In other embodiments, the second coupling member 1200 may be directly secured to the axle 20 or another coupling fastener may be used. In the same vein, the roller 1600 includes a circumference 1610 slightly greater than a circumference 1612 of the axle 20, which assists in preventing the roller 1600 from sliding along the axle 20 during use of the exercise apparatus 10.

[0081] Referring now to FIG. 17, in conjunction with FIGS. 10-16, there is provided an exemplary process-flow diagram depicting a method of coupling a resistance system to an exercise apparatus. The steps delineated in the exemplary process-flow diagram of FIG. 17 are merely exemplary of the preferred order of coupling the resistance system to the exercise apparatus, and said steps may be carried out in another order, with or without additional steps included therein.

[0082] In said process, the method begins at step 1700 and immediately proceeds to the step 1702 of providing, e.g., bringing into physical existence, a plurality of resistance devices, such as the resistance devices 1002a-n described above. In one embodiment, the resistance devices 1002a-n each include a resistance member, such as the resistance member 1004, having a first portion and a second portion separated by a length. A first coupling member is provided that is sized to couple to the resistance member along the length. A second coupling member is also provided that defines a resistance member opening sized to receive at least one of the first portion and the second portion of the resistance member within the resistance member opening. In a preferred embodiment, step 1702 includes providing an exercise apparatus having a first axle and a second axle each including a pair of wheel assemblies disposed on opposite ends of the axles. In one embodiment, the exercise apparatus is the exercise apparatus 10 described above. In other embodiments, the exercise apparatus may be another exercise apparatus with or without wheel assemblies.

[0083] In step 1704, the first coupling member is coupled to the resistance member along the length. The location of the first coupling member with respect to the length may vary depending on the distance between axles, the user height, the user's comfort level, etc.

[0084] In one embodiment, the method includes providing a first roller and a second roller, such as the roller 1600 described above with reference to FIG. 16. In this embodiment, the first roller is coupled to the first axle and the second roller is coupled to the second axle. Advantageously, the roller 1600 is configured to prevent the coupling members from sliding along the axles. In other embodiments, an alternative device may be coupled to the axles to prevent the coupling members from sliding along the axles.

[0085] In one embodiment, the method proceeds to step 1706, which includes coupling the first coupling member to the first axle. In step 1708, the second coupling member is coupled to the second axle. In the embodiments in which the roller is provided, the coupling members are coupled to the rollers prior to being coupled to the axles, in order to increase the safety features when operating the exercise apparatus. As such, the first coupling member and the second coupling member may be directly or indirectly coupled to the axles. In the same vein, in one embodiment, the method includes providing a third coupling member sized to couple to a second one of the resistance members along the length,

[0086] The method proceeds to step 1710, which includes coupling at least one of the first portion and the second portion of the resistance member within the resistance member opening of the second coupling member. Advantageously, the user may adjust a position of the first portion and/or the second portion of the resistance member within the resistance member opening of the second coupling member. Such adjustment in the position of the first portion and/or the second portion of the resistance member within the resistance member opening provides the user with the ability to tailor the distance between the axles to accommodate the user height, the user's comfort level, etc.

[0087] In order to adjust the resistance provided by the exercise apparatus, the user may conveniently exchange the resistance member for a second resistance member. In a preferred embodiment, the resistance member includes a predetermined resistance value different than a predetermined resistance value of the second resistance member. It is within the scope of the method of the present invention to couple a plurality of resistance devices to the axles in order to increase the intensity for the user when exercising using the exercise apparatus. The method ends at step 1712.

[0088] In one embodiment, rather than operating the exercise device 10 in the rolling extending and collapsing motion with the wheels coupled to the axles 20, 21, the wheels may be removed from the axles 20, 21 and a pair of stability platforms, e.g., a left side stability platform and a right side stability platform, may be coupled to the exercise device 10. The stability platforms may be coupled to the exercise device 10, or another exercise device, through the use of a quick release pin, a pull pin, or another type of fastener. The stability platforms provide an increasingly stable surface for the user to stand on when performing exercises such as squats, military presses, curls, and/or triceps extensions, as mentioned above. In one embodiment, the stability platforms include a length of 2-4 feet and a width of 3-5 feet. In other embodiments, the length and the width may be outside of these ranges.

[0089] While the present invention has been described in connection with the illustrated embodiments, it will be appreciated and understood that certain modifications may be made without departing from the true spirit and scope of the invention.