| 摘要 |
The exercise device includes a pair of U-shaped brackets that are mounted on the toy and bottom edges of the door. Suspended between the brackets are a plurality of elas tic cords of different elasticities. By selecting different cords, different tensions or resistances ca n be obtained for exercise routines. An ankle strap may be used to exercise the leg muscles. In some versio ns, spacers may be provided between the U-shaped brackets and the door to prevent rocking.
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