Journal article
The relationship of motor unit size, firing rate and force
Abstract
OBJECTIVE: Using a clinical electromyographic (EMG) protocol, motor units were sampled from the quadriceps femoris during isometric contractions at fixed force levels to examine how average motor unit size and firing rate relate to force generation.
METHODS: Mean firing rates (mFRs) and sizes (mean surface-detected motor unit action potential (mS-MUAP) area) of samples of active motor units were assessed at various force levels in 79 subjects.
Authors
Conwit RA; Stashuk D; Tracy B; McHugh M; Brown WF; Metter EJ
Journal
Clinical Neurophysiology, Vol. 110, No. 7, pp. 1270–1275
Publisher
Elsevier
Publication Date
7 1999
DOI
10.1016/s1388-2457(99)00054-1
ISSN
1388-2457