Premium
Loss of twitch torque following muscle compression
Author(s) -
Brown Timothy,
Galea Victoria,
McComas Alan
Publication year - 1997
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/(sici)1097-4598(199702)20:2<167::aid-mus5>3.0.co;2-a
Subject(s) - biceps , sarcomere , torque , elbow , anatomy , tenotomy , compression (physics) , muscle contraction , materials science , medicine , physics , tendon , myocyte , composite material , thermodynamics
With the elbow flexed, compression of the human biceps brachii has been found to reduce twitch torque, with an approximately linear relationship being observed between the loss of torque and the applied pressure (up to 45 kPa). The decline in torque could no longer be demonstrated when the biceps muscle was stretched, by extending the elbow from a flexed position. The loss of torque in the flexed position appeared to be due to an inability of muscle sarcomeres to bulge sufficiently to take up the series elasticity at the fiber ends. © 1997 John Wiley & Sons, Inc. Muscle Nerve , 20, 167–171, 1997.