Study of local muscular displacement spectra under correlated and uncorrelated isometric muscle contractions
Keywords:
isometric muscle contractions, human brachioradial muscle, ultrasound Doppler myography, computer simulation, displacement spectrumAbstract
Spectral characteristics of isometric muscle contractions of human brachioradial muscle m. flexor
digitorum profundus under static loading were investigated. The spectra of correlated and uncorrelated
muscle contractions received by means of a spectral Doppler musculoskeletal ultrasound method were
compared with those received by means of computer simulation based on the common present-day theory
of filament “slide” and also with the results of the theoretical model that takes into account the viscous
properties of muscle tissue. The physical mechanisms which are capable to explain the observed
differences between experimental and simulated spectra of muscle contractions at the low-frequency
spectra region of 5-20 Hz were discussed.
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