Title :
Effect of increased motor unit action potential duration on the amplitude and mean power frequency of the electromyogram
Author :
Fuglevand, Andrew J. ; Winter, David A. ; Patla, Aftab E. ; Stashuk, Dan
Author_Institution :
Waterloo Univ., Ont., Canada
Abstract :
A motor unit (MU) pool model was used to simulate surface EMG (electromyogram) for conditions of increased motor unit action potential (MUAP) durations at three levels of contraction. Full-wave rectified average EMG (AEMG) increased and mean power frequency (MPF) decreased with increased MUAP duration. The degree of change in AEMG and MPF depends on the contraction level. However, the relation between change in AEMG and change in MPF was independent of contraction level and may be useful in isolating the effect of increased MUAP durations on EMG amplitude during fatiguing contractions
Keywords :
bioelectric potentials; muscle; physiological models; EMG amplitude; EMG mean power frequency; contraction level; fatiguing contractions; full-wave rectified average EMG; motor unit action potential duration; motor unit pool model; Design engineering; Electrodes; Electromyography; Fatigue; Frequency; Muscles; Power engineering and energy; Power system modeling; Recruitment; Systems engineering and theory;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95635
