Undertaking
Patent
1981-03-04
1983-02-01
Johnson, Richard J.
Undertaking
272142, A63B 2304, A63B 2104
Patent
active
043711600
ABSTRACT:
A foot, ankle, and leg exercise device is designed to develop and/or rehabilitate those specific muscles of the foot, ankle and leg which are not properly developed during the act of running or jogging. The user attaches his/her feet to foot pads on the device. When the pads are lifted by the feet against an adjustable resistance from a combination spring and shock cord mechanism, the anterior muscles of the leg are exercised while the posterior, or prime mover muscles, remain inactive.
REFERENCES:
patent: 735319 (1903-08-01), Urwick
patent: 1671096 (1928-05-01), Anderson
patent: 3421760 (1969-01-01), Freeman
patent: 3672670 (1972-06-01), Burzenski
patent: 4310155 (1982-01-01), White
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