Document Detail


The effect of warm-up on intermittent sprint performance and selected thermoregulatory parameters.
MedLine Citation:
PMID:  22503126     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: To investigate the effect of various warm-up intensities based upon individual lactate thresholds on subsequent intermittent sprint performance, as well as to determine which temperature (muscle; T(mu), rectal; T(re) or body; T(b)) best correlated with performance (total work, work and power output of the first sprint, and % work decrement). DESIGN: Nine male team-sport participants performed five 10-min warm-up protocols consisting of different exercise intensities on five separate occasions, separated by a week. METHODS: Each warm-up protocol was followed by a 6×4-s intermittent sprint test performed on a cycle ergometer with 21-s of recovery between sprints. T(mu), T(re) and T(b) were monitored throughout the test. RESULTS: There were no differences between warm-up conditions for total work (Jkg(-1); P=0.442), first sprint work (Jkg(-1); P=0.769), power output of the first sprint (Wkg(-1); P=0.189), or % work decrement (P=0.136), respectively. Moderate to large effect sizes (>0.5; Cohen's d) suggested a tendency for improvement in every performance variable assessed following a warm-up performed at an intensity midway between lactate inflection and lactate threshold. While T(mu), T(re), T(b), heart rate, ratings of perceived exertion and plasma lactate increased significantly during the exercise protocols (P<0.05), there were no significant correlations between T(mu), T(re), and T(b) assessed immediately after each warm-up condition and any performance variable assessed. CONCLUSIONS: Warm-up performed at an intensity midway between lactate inflection and lactate threshold resulted in optimal intermittent sprint performance. Significant increases in T(mu), T(re) and T(b) during the sprint test did not affect exercise performance between warm-up conditions.
Authors:
Pongson Yaicharoen; Karen Wallman; Alan Morton; David Bishop
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-11
Journal Detail:
Title:  Journal of science and medicine in sport / Sports Medicine Australia     Volume:  -     ISSN:  1878-1861     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9812598     Medline TA:  J Sci Med Sport     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.
Affiliation:
School of Sport Science, Exercise and Health, The University of Western Australia, Australia.
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