| 摘要 |
An exercising device for strengthening joints of the body, particularly the ankle joint, wherein a plate engageable against the foot of the user imparts controlled resistance in all directional movements of the joint through elastic limbs having one set of corresponding ends attached to predetermined points around the periphery of the plate and the other set of corresponding ends attached to a pair of handles which are gripped by the user for varying the degree of resistance imparted by the limbs.
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