| 摘要 |
A physical exercise device is disclosed comprising a central connecting means, a pair of base frames having the same construction and symmetrically connected to opposite sides of the central connecting means, a pair of foot boards symmetrically mounted on the top of the respective base frames such that they can be moved away and toward each other, and a spring means connected between each base frame and the associated foot board to bias the foot boards toward each other. An operator may exercise his legs by placing his feet on the foot boards to strengthen the muscles of the abdomen and waist as well as the muscles of the legs in order to enhance, promote and maintain general health.
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