Exercise or therapy device or apparatus

Undertaking

Patent

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Details

272117, 272118, 272DIG4, A63B 2102

Patent

active

045429006

ABSTRACT:
An exercise or therapy device provides for the foot to be fixed and the knee to be biased to a flexed position such that the quadriceps muscles straighten the leg or extend the knee against resistance. Preferably the user is seated with his foot or feet fixed against a foot support, and the posterior of the knee is engaged by a movable member which biases the knee in a flexing direction with a selectable force. The seat preferably is movable back and forth to accommodate the flexing and extending of the knee. The femur is not fixed as in many machines where the knee is fixed and the foot moves. The device is particularly suited for strengthening of the quadriceps, but is useful in connection with many different types of knee therapy or knee strengthening. The device is also effective for strengthening the hip flexors and extensors and the hamstrings. A basic concept of the device involves its simulation of natural sports activity involving running, in which the foot is planted and the knee moves to accommodate the activity. Various adjustments are provided on the device to accommodate different users. Preferred versions of the device are assembled in a unitary frame.

REFERENCES:
patent: D263978 (1982-04-01), Brentham
patent: 2855199 (1958-10-01), Noland et al.
patent: 3850430 (1974-11-01), Hamilton
patent: 4256302 (1981-03-01), Keiser et al.

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