Document Detail


Investigations of the time series structure of the EMG during sustained isometric contractions of back muscles.
MedLine Citation:
PMID:  3964252     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The experiment aimed at elucidating electromyographic signs of fatigue of lumbar muscles. On two days, 4 subjects had to hold 4 different target forces to fatigue. Bipolar surface EMG's were derived at the L3 level. The time series structure of the EMG's was characterized by means of autoregressive models. The r.m.s.- value did not reveal uniform time-dependent changes, except for an increase during the highest force level. The variance explained by a linear stochastic process systematically increased during the sustained contractions. The mean power frequencies exhibited similar changes.
Authors:
D Bräuer; H Seidel; H Beyer
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biomedica biochimica acta     Volume:  45     ISSN:  0232-766X     ISO Abbreviation:  Biomed. Biochim. Acta     Publication Date:  1986  
Date Detail:
Created Date:  1986-05-09     Completed Date:  1986-05-09     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8304435     Medline TA:  Biomed Biochim Acta     Country:  GERMANY, EAST    
Other Details:
Languages:  eng     Pagination:  S89-92     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Back
Electromyography
Fatigue / physiopathology*
Humans
Male
Muscle Contraction
Muscles / physiology*

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