Undertaking
Patent
1984-05-21
1988-04-05
Apley, Richard J.
Undertaking
272137, 272139, A63B 2102
Patent
active
047354127
ABSTRACT:
The invention relates to a portable exercise device designed for use by a person in the supine position. The invention consists of three main component parts being, a sturdy rectangular base, resilient means and three straps. The base is placed on the bottom of the user's feet and when the legs are extended the force is transmitted through the resilient means to the straps and then to the muscles of the user's back. While the material used in constructing the invention may vary the basic design must remain unchanged if the invention is to be used effectively in conjunction with the therapeutic exercise program. Of particular importance in this regard are those features of the invention which encourage isotonic contractions of the muscles and the arrangement of the three straps on the user's back which permits interdependent movement of at least two but preferably three of the loops.
REFERENCES:
patent: 1734238 (1929-11-01), Sweeney
Apley Richard J.
Cannon Alan W.
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