Characteristics of muscle activities in a quick change in magnitude of force.
The present study was designed to examine the characteristics of muscle activities in a quick voluntary change in magnitude of force. 15 subjects were asked to change their magnitude of force from 50% of maximal isometric elbow-flexion strength (MVS) to 20% MVS as quickly as possible. On each EMG of biceps and triceps, a period with no muscle activity was observed. It seems that the occurrence of the pause in muscle activity on EMG contributes to more quick change in magnitude of exerted force.
Kawabe-Himeno
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Human Movement Laboratory, Faculty of Human Development, Kobe University, Japan.
D000328:Adult; D004576:Electromyography; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D009046:Motor Neurons / Q000502:physiology; D018482:Muscle, Skeletal / Q000294:innervation; D011930:Reaction Time / Q000502:physiology*