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A training device includes a continuous elastic loop having attached thereon at least one of a hand grip or a foot cradle, a non-scissoring sleeve slidably wrapped around a first portion of the continuous elastic loop, and an anchoring portion non-slidably connected to the non-scissoring sleeve. The

A training device includes a continuous elastic loop having attached thereon at least one of a hand grip or a foot cradle, a non-scissoring sleeve slidably wrapped around a first portion of the continuous elastic loop, and an anchoring portion non-slidably connected to the non-scissoring sleeve. The elastic loop provides uniform resistance (i.e., tension) while providing total body muscle engagement whether conducting isometric, concentric, or eccentric muscle contractions. The training device provides portability, ease of use and greater effectiveness for the user while exercising.

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1. A training device comprising: a continuous elastic loop having a cross section that is rectangular in shape, wherein the continuous elastic loop is formed from a single layer of material that provides a uniform resistance when placed in tension, and a cross sectional width of the loop in a range

1. A training device comprising: a continuous elastic loop having a cross section that is rectangular in shape, wherein the continuous elastic loop is formed from a single layer of material that provides a uniform resistance when placed in tension, and a cross sectional width of the loop in a range from ¾ inch to 2 inches, and a perimeter of the loop in a range from 6 feet to 24 feet;an anchoring portion including a strap and a door anchor operatively connected to the strap, wherein the strap has a distal end and a looped near end and the door anchor is positioned intermediate the distal end and the looped near end so as to be retained relative to a door to anchor the training device, such that when the door anchor is retained by the door the distal end is disposed on an opposite side of the door than the continuous elastic loop;a non-scissoring flexible sleeve slidably wrapped around a first portion of the continuous elastic loop and non-slidably connected to the looped near end of the strap of the anchoring portion, wherein the non-scissoring flexible sleeve extends through the looped near end while wrapped around the first portion of the continuous elastic loop; andat least one non-rigid hand grip slidably wrapped around a second portion of the continuous elastic loop and configured to receive at least one hand of a user around the second portion of the continuous elastic loop for the user to exert force away from the door upon the training device while anchored thereby stretching the continuous elastic loop. 2. The training device of claim 1, further comprising: a trap fixedly connected to the non-scissoring flexible sleeve and operably connected to the anchoring portion to retain the non-scissoring flexible sleeve and the anchoring portion in the non-slidably connected relationship; andan inner surface of the continuous elastic loop, wherein the trap is disposed inwardly from the inner surface. 3. The training device of claim 1, further comprising: a fastener disposed at the distal end of the strap opposite the looped near end of the strap operatively connected to the non-scissoring flexible sleeve and configured for the fastener to engage the strap forming a second loop to anchor the training device to an object encircled by the second loop,wherein the strap includes channels configured for the fastener to engage the strap at one of the channels forming the second loop to anchor the training device to the object encircled by the second loop;wherein the channels and the fastener are disposed on the opposite side of the door relative to the continuous elastic loop when the door anchor is retained by the door. 4. The training device of claim 1, further comprising: at least one foot cradle fixedly secured to the at least one non-rigid hand grip slidably connected to the continuous elastic loop and configured to receive at least one foot of a user for the user to exert force upon the training device while anchored thereby stretching the continuous elastic loop. 5. A training device comprising: a continuous elastic loop having a cross section that is rectangular in shape, wherein the continuous elastic loop is formed from a single layer of material that provides a uniform resistance when placed in tension, and a cross sectional width of the loop in a range from ¾ inch to 2 inches, and a perimeter of the loop in a range from 6 feet to 24 feet, the continuous elastic loop having attached thereon at least one of a hand grip or a foot cradle;a non-scissoring flexible sleeve slidably wrapped around a first portion of the continuous elastic loop;an anchoring portion non-slidably connected to the non-scissoring flexible sleeve; andthe anchoring portion comprising a strap having a distal end and a looped near end, wherein the non-scissoring flexible sleeve is connected with the looped near end while extending therethrough and wrapped around the first portion of the continuous elastic loop. 6. The training device of claim 5, wherein the anchoring portion includes: the strap having a fastener at the distal end, the looped near end non-slidably connecting the anchoring portion to the non-scissoring flexible sleeve and the fastener configured to engage the strap forming a second loop to anchor the training device to an object encircled by the second loop. 7. The training device of claim 6, wherein the strap includes channels having dimensions corresponding to dimensions of the fastener such that the fastener engages the strap at one of the channels forming the second loop to anchor the training device to the object encircled by the second loop. 8. The training device of claim 5, wherein the anchoring portion includes: the strap having a door anchor positioned along the strap intermediate the looped near end and the distal end, and the looped near end non-slidably connecting the anchoring portion to the non-scissoring flexible sleeve and the door anchor configured to be retained relative to a door to anchor the training device such that when the door anchor is retained by the door the distal end of the strap is disposed on an opposite side of the door than the continuous elastic loop. 9. The training device of claim 5, wherein the anchoring portion includes: the strap having a door anchor positioned along the strap intermediate the looped near end and the distal end, and the looped near end non-slidably connecting the anchoring portion to the non-scissoring flexible sleeve, whereinthe strap has a thickness smaller than 0.25 inches and the door anchor has at least one dimension larger than 0.25 inches such that the strap passes through a slot between a door and a door frame or a floor while the door anchor is retained on an opposite side of the door from the continuous elastic loop to anchor the training device. 10. The training device of claim 5, wherein the anchoring portion includes: the strap having a door anchor positioned along the strap intermediate the looped near end and the distal end, and the looped near end non-slidably connecting the anchoring portion to the non-scissoring flexible sleeve, whereinthe strap has a thickness smaller than 0.5 inches and the door anchor has at least one dimension larger than 0.5 inches such that the strap passes through a slot between a door and a door frame or a floor while the door anchor is retained on an opposite side of the door from the continuous elastic loop to anchor the training device. 11. The training device of claim 5, wherein the anchoring portion includes: the strap having a door anchor positioned along the strap intermediate the looped near end and the distal end, and the looped near end non-slidably connecting the anchoring portion to the non-scissoring flexible sleeve, whereinthe strap has a thickness smaller than 0.75 inches and the door anchor has at least one dimension larger than 0.75 inches such that the strap passes through a slot between a door and a door frame or a floor while the door anchor is retained on an opposite side of the door from the continuous elastic loop to anchor the training device. 12. The training device of claim 5, wherein: the hand grip is a non-rigid hand grip slidably wrapped around a second portion of the continuous elastic loop and configured to receive at least one hand of a user around the second portion of the continuous elastic loop for the user to exert force upon the continuous elastic loop away from the anchoring portion thereby stretching the continuous elastic loop, wherein stretching the uninterrupted continuous elastic loop provides uniform resistance. 13. A training device comprising: a single layer continuous elastic loop providing a uniform resistance when placed in tension, the single layer continuous elastic loop having a cross section that is rectangular in shape, and a cross sectional width of the loop in a range from ¾ inch to 2 inches, and a perimeter of the loop in a range from 6 feet to 24 feet;an anchoring portion including a strap and a fastener disposed at a distal end of the strap opposite a looped near end of the strap to which the strap operatively connects to the continuous elastic loop and configured for the fastener to engage the strap forming a second loop to anchor the training device to an object encircled by the second loop;a non-scissoring flexible sleeve slidably wrapped around a first portion of the single layer continuous elastic loop and non-slidably connected to the anchoring portion, wherein the non-scissoring flexible sleeve extends through the looped near end while wrapped around the first portion of the single layer continuous elastic loop; andat least one non-rigid hand grip slidably wrapped around a second portion of the single layer continuous elastic loop and configured to receive at least one hand of a user around the second portion of the single layer continuous elastic loop for the user to exert force away from the object upon the training device while anchored thereby stretching the single layer continuous elastic loop. 14. The training device of claim 13, further comprising: an inner surface and an outer surface on the single layer continuous elastic loop;a trap fixedly connected to the non-scissoring flexible sleeve and operatively connected to the anchoring portion to retain the non-scissoring flexible sleeve and the anchoring portion in the non-slidably connected position;wherein the trap is positioned interior the single layer continuous elastic loop offset from the inner surface, wherein the offset of the trap from the inner surface is equal to a thickness of the non-scissoring flexible sleeve. 15. The training device of claim 13, further comprising at least one of: at least one foot cradle slidably connected to the single layer continuous elastic loop and configured to receive at least one foot of a user for the user to exert force upon the training device while anchored thereby stretching the continuous elastic loop, orat least one foot cradle operatively connected to the non-rigid hand grip and configured to receive at least one foot of a user for the user to exert force upon the training device while anchored thereby stretching the single layer continuous elastic loop. 16. The training device of claim 13, wherein the strap includes channels of a size and shape corresponding to the fastener to engage the strap at one of the channels forming the second loop to anchor the training device to the object encircled by the second loop. 17. The training device of claim 13 further comprising: a door anchor operatively connected to the strap and configured to be retained relative to a door to anchor the training device. 18. The training device of claim 13 further comprising: a door anchor operatively connected to the strap and configured to be retained relative to a door to anchor the training device, wherein the door anchor has a shape conforming to a shape of a portion of the door to anchor the training device to the portion of the door. 19. The training device of claim 1, wherein the non-scissoring flexible sleeve has a width measured in a first direction which is larger than its thickness measured in a direction perpendicular to the first direction. 20. The training device of claim 13, wherein the non-scissoring flexible sleeve has a width measured in a first direction which is larger than its thickness measured in a direction perpendicular to the first direction.