Document Detail


Variable power output during cycling improves subsequent treadmill run time to exhaustion.
MedLine Citation:
PMID:  16914374     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to investigate the effect of constant versus variable power output cycling exercise on subsequent high-intensity, running performance. Eight triathletes completed two testing sessions (in a random order), which required the subjects to perform 30 min of cycling at either, a constant power output (90% of the lactate threshold), or a variable power output with power output alternating every 5 min (+/-20% of the constant workload). Each cycling bout was immediately followed by a high-intensity treadmill run (16.7+/-0.7 km h(-1)) to exhaustion. No significant differences were found for mean metabolic values or power output between cycling conditions. However, a significant (P<0.05) improvement in run time to exhaustion was reported after 30 min of variable cycling (15:09+/-4:43 min) compared to constant cycling (10:51+/-3:32 min). The results of this study demonstrate that, despite similar average physiological responses during 30 min of cycling, variable-intensity cycling results in an improved running performance compared to constant-intensity cycling. It is hypothesised that the reduced power output in the final 5 min of variable cycling protocol may allow recovery before transition, however the mechanisms involved cannot be determined from the current study.
Authors:
R Suriano; F Vercruyssen; D Bishop; J Brisswalter
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Publication Detail:
Type:  Clinical Trial; Journal Article     Date:  2006-08-17
Journal Detail:
Title:  Journal of science and medicine in sport / Sports Medicine Australia     Volume:  10     ISSN:  1440-2440     ISO Abbreviation:  J Sci Med Sport     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-06-04     Completed Date:  2007-09-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9812598     Medline TA:  J Sci Med Sport     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  244-51     Citation Subset:  IM    
Affiliation:
School of Human Movement and Exercise Science, The University of Western Australia, Australia.
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MeSH Terms
Descriptor/Qualifier:
Adult
Bicycling / physiology*
Energy Metabolism / physiology*
Exercise / physiology*
Exercise Test
Humans
Male
Running / physiology*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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