Invention Grant
US4848742A Lumbar stretch rocker 失效
腰部拉伸摇杆

Lumbar stretch rocker
Abstract:
This invention is an exercise apparatus upon which the user rests his or her hips and feet while lying on a flat surface such as a floor. It provides means by which a user can pull or push with the hands and feet while the user oscillates, rocks, or rotates his body to stretch or relax the back muscles. It can be used directly on a flat surface or on a base.
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