Journal
JOURNAL OF THEORETICAL BIOLOGY
Volume 255, Issue 2, Pages 176-187Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jtbi.2008.08.009
Keywords
Gastrocnemius medialis; Eccentric contraction; Muscle model; Parameter determination; Simulation
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Tension in eccentric contractions of skeletal muscles is expressed with a Hill-type model with a term containing a tension-velocity relation and a second term which is supposed to account for effects of contraction history. Based on experimental data (rat gastrocnemius medialis) a method is derived to uniquely characterize the tension-velocity relation in the first term. Also, a description of the second term is derived and its single additional parameter is determined. The model is tested in simulations. The experimental data used to characterize the model indicates that the slope of tension in the second phase of eccentric contractions is independent of muscle length. (C) 2008 Elsevier Ltd. All rights reserved.
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