Document Detail

Effects of fatigue and laterality on fractionated reaction time.
MedLine Citation:
PMID:  15186979     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Surface EMG enabled fractionation of a simple hand grip total reaction time into peripheral and central processing components (motor time and premotor time respectively). Changes in reaction time components were investigated in 12 female intercollegiate swimmers (bilateral athletes) and 12 female intercollegiate tennis players (unilateral athletes) following a 48% strength decrement induced by serial maximal voluntary isometric contractions (5 sec in duration). Despite significantly greater strength in the dominant arm than in the nondominant arm, there was no difference in fatigue effects between arms. Fatigue increased the premotor component of reaction time significantly, and indirectly the total reaction time, but the motor time remained essentially constant regardless of the type of previous athletic training. This indicated that fatigue impaired central nervous system or myoneural-junction operations rather than the intramuscular ability to initiate force.
C Hanson; G K Lofthus
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of motor behavior     Volume:  10     ISSN:  0022-2895     ISO Abbreviation:  J Mot Behav     Publication Date:  1978 Sep 
Date Detail:
Created Date:  2004-06-09     Completed Date:  2005-02-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0236512     Medline TA:  J Mot Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  177-84     Citation Subset:  -    
Department of Physical Education, University of California, Berkeley, CA 94720, USA.
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