Title :
Is high-frequency stiffness a measure for the number of attached cross-bridges?
Author :
van der Linden, B.J.J.J. ; Koopman, H.F.J.M. ; Huijing, P.A. ; Grootenboer, H.J.
Author_Institution :
Biomed. Inst. of Technol., Twente Univ., Enschede, Netherlands
fDate :
31 Oct-3 Nov 1996
Abstract :
Muscle stiffness is an important property for movement control. Stiffness is a measure for the resistance against mechanical disturbances in muscular-skeletal systems. In general muscle stiffness is assumed to depend on the number of attached cross-bridges. It is not possible to measure this number in vivo or vitro. In experiments, high frequency perturbations are used to obtain a measurement of stiffness. In this paper a simulation study is presented concerning the correlation between the number of attached cross-bridges and high-frequency stiffness. A model based on the sliding-filament theory was used for the simulation of dynamic contractions. It is concluded that these two methods of muscle stiffness determination do not yield compatible results during lengthening
Keywords :
biomechanics; elasticity; muscle; physiological models; Huxley model; dynamic contractions; high frequency perturbations; high-frequency stiffness; isokinetic conditions; isometric conditions; lengthening; movement control; muscle stiffness; muscular-skeletal systems; number of attached cross-bridges; resistance against mechanical disturbance; simulation study; sliding-filament theory; Biomedical measurements; Bridges; Elasticity; Engineering in Medicine and Biology Society; Integrated circuit modeling; Muscles; Predictive models; Quantum cascade lasers; Springs; Tellurium;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.651866
