Mechanomyogram for identifying muscle activity and fatigue.
Mechanomyogram is the recording of the acoustic activity associated with the muscle contraction. While discovered nearly a decade ago with the intention of providing an alternate to the surface electromyogram, it has not yet been investigated thoroughly and there are no current applications associated with MMG. This paper reports an experimental study of MMG against force of contraction and muscle fatigue during cyclic contraction. The results indicate that there is a relationship between the intensity of the MMG recording and force of contraction. A change in the intensity of MMG is also observed with the onset of muscle fatigue. However, the inter-subject variation is very large. The results also indicate that the spectrum of the MMG is very inconsistent and not a useful feature of the signal.
Yang
Zhao Feng
ZF
Bio-signal Lab, School of Electrical and Computer Engineering, RMIT University, GPO Box 2476V, Melbourne, VIC 3001 Australia.
Kumar
Dinesh Kant
DK
Arjunan
Sridhar Poosapadi
SP
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D018763:Muscle Fatigue / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D009213:Myography / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity