Apparatus for testing or exercising muscles of the lower trunk o

Details Apparatus for testing or exercising muscles of the lower trunk o Apparatus for testing or exercising muscles of the lower trunk o

1988-11-03

1989-08-22

Apley, Richard J.

Undertaking

128 25R, A63B 2100

Patent

active

048589195

ABSTRACT:
Methods and apparatus for exercising or testing the strength of muscles in the lower trunk of the human body. The patient or exerciser is seated with his pelvis and legs fixed against movement and with his head, arms and upper back fixed relative to a movement arm which extends above the seat and is mounted for pivotal movement relative to the seat about a horizontal axis. While the movement arm is in a predetermined position, the patient applies a force through the upper back to the movement arm to stress the muscles of the lower trunk, and the strength of these muscles is measured. To exercise these muscles, the movement arm is moved by a force exerted by the upper back against a bias of a resistance weight to lift the weight, and then the force is released to lower the weight and the process is repeated. A compound weight system is employed to allow precise weight adjustment to suit the strength of the exerciser. The movement arm including the weight of the exerciseer is balanced about the pivot axis by counterweights including an adjustable counterweight.

REFERENCES:
patent: 167137 (1875-08-01), Tiebout
patent: 3573865 (1971-04-01), Annas
patent: 4405128 (1983-09-01), McLaughlin et al.
patent: 4462252 (1984-07-01), Smidt et al.
patent: 4666152 (1987-05-01), Jones
patent: 4702108 (1987-10-01), Amundsen et al.
patent: 4725054 (1988-02-01), Solow et al.

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