Document Detail

The Effect of Muscular Endurance on Running Economy.
MedLine Citation:
PMID:  21691229     Owner:  NLM     Status:  Publisher    
Hayes, PR, French, DN, and Thomas, K. The effect of muscular endurance on running economy. J Strength Cond Res 25(X): 000-000, 2011-The purpose of this study was to examine the relationship between fatigue-induced changes in running economy (RE) and muscular strength endurance (MSE). Ten well-trained male runners completed 2 runs of the same energy expenditure at 20%Δ &OV0312;O2 below LT. In the middle of the experimental condition (high intensity exercise [HIE]), there was a 4-minute block at s&OV0312;O2max. The aim of the 4-minute block was to increase RE through fatigue, without inducing exhaustion. The MSE of hip extensors (HEs) and knee flexors (KFs) was assessed by 2 20-second eccentric bouts on an isokinetic dynamometer at 180°·s. The RE increased after HIE compared to the control condition. Partial correlations found the increase in RE was strongly related with KF MSE (r = -0.709-0.798; p = 0.03-0.01). Greater MSE appeared to confer a fatigue resistant effect, resulting in a smaller increase in RE. The underlying mechanism of the fatigue resistant effect remains to be elucidated. Conditioning work focusing on augmenting eccentric muscular endurance of the legs may offer beneficial adaptations that promote fatigue resistance.
Philip R Hayes; Duncan N French; Kevin Thomas
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-6-17
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-6-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Sport and Exercise Science, Northumbria University, Newcastle upon Tyne, United Kingdom.
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