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Updated: Jun 18, 2026

Myo-mechanical Analysis of Isolated Skeletal Muscle
Published on: February 22, 2011
The in vivo mechanical properties of muscular bulk tissue
Serdar Aritan1, S Olutunde Oyadiji, Roger M Bartlett
1Biomechanics Research Group, School of Sports Science and Technology, Hacettepe University, Beytepe, Ankara, Turkey. serdar.aritan@hacettepe.edu.tr
Abstract:
The aim of this study was to characterize the bulk modulus properties of the upper arm under relaxed and controlled contraction which is defined as 25% of the maximum voluntary contraction. A new testing machine was designed to generate a continually increasing load on the upper arm and measure the load over time. The machine consists of a device which is effectively a cuff that applies controllable pressure on a 47 mm wide band of the upper arm. A set of four different constant strain rates was used to test the stiffness of the arm bulk tissue. The stress-strain test consisted of 0.5, 1, 2, and 4 mm.s(-1) constant strain rates. The stress-strain curves obtained show strongly non-linear response of the bulk tissue. The nonlinearity is evident that the stress-strain curve for bulk tissue is time dependent.
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