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

Volume

2

fYear

1996

fDate

31 Oct-3 Nov 1996

Firstpage

565

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IEMBS.1996.651866

Filename

651866