Document Detail


Changes of the average muscle fiber conduction velocity during a varying force contraction.
MedLine Citation:
PMID:  2444419     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The average conduction velocity of muscle fibers measured with a surface electrode has been reported to increase with the level of contraction force. To clarify the factors causing this increase, the authors decomposed the interference surface EMG signal into its constituent motor unit action potentials and compared the average conduction velocity with the conduction velocity measured at the individual discharges of motor units. The conduction velocity within individual motor units increased with the contraction force and contributed to the increase of the average conduction velocity. However, the increase of the conduction velocity within motor units was relatively small and was insufficient to cause the increase of the average conduction velocity. This result indicates that the motor units recruited at higher thresholds of force should have higher conduction velocities.
Authors:
T Sadoyama; T Masuda
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Electroencephalography and clinical neurophysiology     Volume:  67     ISSN:  0013-4694     ISO Abbreviation:  Electroencephalogr Clin Neurophysiol     Publication Date:  1987 Nov 
Date Detail:
Created Date:  1987-11-23     Completed Date:  1987-11-23     Revised Date:  2008-09-09    
Medline Journal Info:
Nlm Unique ID:  0375035     Medline TA:  Electroencephalogr Clin Neurophysiol     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  495-7     Citation Subset:  IM    
Affiliation:
Industrial Products Research Institute, Ibaraki, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adult
Humans
Male
Muscle Contraction*
Muscles / physiology*
Neural Conduction*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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