Exercise devices – User manipulated force resisting apparatus – component... – Utilizing force resistance generated by user only
Patent
1996-02-09
1997-12-30
Clark, Jeanne M.
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing force resistance generated by user only
482132, 482907, 601 23, A63B 2302
Patent
active
057023336
ABSTRACT:
An exercise method beneficially and safely affects the lumbar spine and muscles of a human. The method uses a simple exercise device having a substantially rigid body with top and bottom surfaces, and a front and back. The top surface is configured and dimensioned to safely passively extend a human's lumbar spine when the human lays with her or his stomach on the top surface (e.g. by providing a concave surface with a total angle of concavity of about 10.degree.-30.degree., preferably about 12.degree.-17.degree.). The bottom surface of the device is configured and dimensioned to allow rocking action in a dimension extending from the front to the rear of the device, and may include two or more spaced rocking strips with front and rear stops. In addition to passively laying on the top surface, the human may occasionally contract her or his lumbar muscles and rock her or his body toward and away from the front of the device to effect rocking action of the device, which assists in strengthening the lumbar musculature and promoting stability of her or his back. The method of use also may include the user pushing on the surface on which the device bottom surface is positioned with her or his arms to move her or his chest away from the top surface of the device while the thighs remain in contact with the top surface, and hold that position for at least a few seconds, so as to passively stretch the front of her or his spine.
REFERENCES:
patent: 4307880 (1981-12-01), Abram
patent: 4523583 (1985-06-01), Noble
patent: 4752067 (1988-06-01), Colonello
patent: 4838249 (1989-06-01), Jannotta
"The Lumbar Spine Mechanical Diagnosis and Thery" R. A. Mckenzie 1981 pp. 56-63.
"Treat Your Own Back", Robin McKenzi, 1985 p. 69.
Waldron David W.
Waldron Richard J.
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