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News Physiol Sci 5: 17-21, 1990;
1548-9213/90 $5.00
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News in Physiological Sciences, Vol 5, 17-21, Copyright © 1990 by International Union of Physiological Sciences

ARTICLES

Acoustic Signals from Skeletal Muscle

DT Barry

Contracting skeletal muscles emit pressure waves that are audible at the skin surface and are easily recorded with standard microphones both in vivo and in vitro. These muscle sounds are an intrinsic component of the contractile mechanism and are produced by mechanical vibrations at the resonant frequency of the muscle. The sounds are useful in measuring force, fatigue, and mechanical properties of muscle.




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