Document Detail

Acute, intermediate intensity exercise, and speed and accuracy in working memory tasks: A meta-analytical comparison of effects.
MedLine Citation:
PMID:  21163278     Owner:  NLM     Status:  In-Data-Review    
The purpose of this study was to compare, using meta-analytic techniques, the effect of acute, intermediate intensity exercise on the speed and accuracy of performance of working memory tasks. It was hypothesized that acute, intermediate intensity exercise would have a significant beneficial effect on response time and that effect sizes for response time and accuracy data would differ significantly. Random-effects meta-analysis showed a significant, beneficial effect size for response time, g=-1.41 (p<0.001) but a significant detrimental effect size, g=0.40 (p<0.01), for accuracy. There was a significant difference between effect sizes (Z(diff)=3.85, p<0.001). It was concluded that acute, intermediate intensity exercise has a strong beneficial effect on speed of response in working memory tasks but a low to moderate, detrimental one on accuracy. There was no support for a speed-accuracy trade-off. It was argued that exercise-induced increases in brain concentrations of catecholamines result in faster processing but increases in neural noise may negatively affect accuracy.
Terry McMorris; John Sproule; Anthony Turner; Beverley J Hale
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Publication Detail:
Type:  Journal Article     Date:  2010-12-14
Journal Detail:
Title:  Physiology & behavior     Volume:  102     ISSN:  1873-507X     ISO Abbreviation:  Physiol. Behav.     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-01-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  421-8     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Inc. All rights reserved.
Institute of Sport, PE and Health Sciences, University of Edinburgh, St. Leonard's Land, Holyrood Road, Edinburgh EH8 8AQ, Scotland, United Kingdom; Chichester Centre of Applied Sport and Exercise Sciences, University of Chichester, College Lane, Chichester, West Sussex PO19 6PE, United Kingdom.
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