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RESEARCH PAPERS

Mechanical Responses of Tendons to Repeated Extensions and Wait Periods

[+] Author and Article Information
Robert P. Hubbard, Keyoung J. Chun

Department of Biomechanics, Michigan State University, East Lansing, MI 48824-1316

J Biomech Eng 110(1), 11-19 (Feb 01, 1988) (9 pages) doi:10.1115/1.3108399 History: Received May 14, 1987; Revised December 06, 1987; Online June 12, 2009

Abstract

Tendon specimens were repeatedly extended to peak strains of either 2, 3, 4, or 6 percent. During the three 1800 s (30 min.) periods of cyclic extension, the peak loads relaxed with decreases in hysteresis and increases in slack strain. During the two 1800 s wait periods of no extension, the specimens recovered with increases in peak load and hysteresis and decreases in slack strain. However, the recovery during the wait periods was eradicated in the first few subsequent extensions and the relaxation continued as if there were no 1800 s wait periods. Stress-strain responses were well fit with power relations.

Copyright © 1988 by ASME
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