| 摘要 |
The present invention consists of a flat, rectangular metal frame that would measure approximately 5 feet long. The front of the frame would be fitted with a pair of handles or handgrips that would be connected on top of the padded elbow. The padded elbow and knee rests would roll back and forth along the frame. The knee rest would include a variable resistance mechanism that could be adjusted to make it harder to move the knee rest. The user would place the machine on the floor, kneel down on the knee rest, lean forward on their elbows and hold the handgrips with their elbows on the elbow rest, and exercise by using his abdominal muscles to move the elbow and knee rests back and forth along the frame. As the user pulls the knee rest up toward the handgrips, his abdominal muscles would contract and receive a good workout.
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