title: The in vivo mechanical properties of muscular bulk tissue.
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.
authors: Biomechanics Research Group, School of Sports Science and Technology, Hacettepe University, Beytepe, Ankara, Turkey. serdar.aritan@hacettepe.edu.tr
authors: Serdar
authors: S
authors: Aritan
authors: S Olutunde
authors: SO
authors: Oyadiji
authors: Roger M
authors: RM
authors: Bartlett
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D019245:Compressive Strength / Q000502:physiology; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology; D009126:Muscle Relaxation / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology*