Undertaking
Patent
1984-07-02
1986-12-16
Apley, Richard J.
Undertaking
272900, A63B 2302
Patent
active
046291792
ABSTRACT:
Foot holding apparatus for use in performing sit-up exercises has a pair of foot holding devices which are preferably separate and with each provided with a clamping device by which it can be secured to the bottom of a door. Each device has a convex seat against which the arch section of a foot is held by a strap overlying the instep section thereof. The seats are so dimensioned and disposed that when the feet of the user are so held and the user is lying on the floor, the ball portions and toe of both feet engage the door and the heels thereof rest on the floor with the plane inclusive of the ball portions and the hubs defining an acute angle with the floor such that the knees of the user are bent to an extent enabling abdominal muscles to be exercised with minimum risk to the lower back. In the preferred embodiment the foot holding devices are vertically adjustable relative to their clamping devices.
REFERENCES:
patent: 3134592 (1964-05-01), Sharkey
patent: 3917261 (1975-11-01), Small et al.
patent: 4116434 (1978-09-01), Bernstein
patent: 4182510 (1980-01-01), Lundell
patent: 4185816 (1980-01-01), Bernstein
patent: 4212458 (1980-07-01), Bizilia
patent: 4468022 (1984-08-01), Wu
Apley Richard J.
Brown David J.
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