| 摘要 |
An exercise apparatus (10) particularly for developing and conditioning abdominal muscle group of the torso of a user while seated on a fixed seat (36) of a fixed frame (13). Three separate movable frames, called a crunch frame, a sway frame, and a twist frame are provided to allow the user to individually or simultaneously exercise abdominal muscles while crunching (bending forward), swaying (bending from side-to-side), or twisting (rotating his torso). Variable resistance to the movement of the frames is provided by weights (22) and pulleys (20, 80, 82, 84A, 84B, 86A, 86B, 88, 90, 92A, 92B, 94A, 94B, 96A, 96B) operatively connected by a cable (26) to the crunch frame, sway frame, and twist frame.
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