Linear movement, trunk muscle exercise method

Details Linear movement, trunk muscle exercise method Linear movement, trunk muscle exercise method

1994-03-30

1995-10-24

Apley, Richard J.

Exercise devices

User manipulated force resisting apparatus, component...

Utilizing weight resistance

902135, 902145, A63B 2302

Patent

active

054605873

ABSTRACT:
An exercise method for strengthening the trunk muscles has a horizontally-movable plunger that contacts the trunk of a user for linearly applying the force of a weight stack to resist trunk flexion and extension of a seated user. The plunger is attached to a carriage mounted for horizontal movement on rails. A cable connection between the carriage and the weight stack includes a cam for varying resistance with changes in position of the plunger. The backrest and seat are made optionally tiltable.

REFERENCES:
patent: 1548849 (1923-09-01), Ruden
patent: 4632393 (1986-12-01), Van Noord
patent: 4653750 (1987-03-01), McIntyre
patent: 4666152 (1987-05-01), Jones
patent: 4702108 (1987-10-01), Amundsen et al.

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