Document Detail


Incremental exercise test design and analysis: implications for performance diagnostics in endurance athletes.
MedLine Citation:
PMID:  17595153     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Physiological variables, such as maximum work rate or maximal oxygen uptake (VO2max), together with other submaximal metabolic inflection points (e.g. the lactate threshold [LT], the onset of blood lactate accumulation and the pulmonary ventilation threshold [VT]), are regularly quantified by sports scientists during an incremental exercise test to exhaustion. These variables have been shown to correlate with endurance performance, have been used to prescribe exercise training loads and are useful to monitor adaptation to training. However, an incremental exercise test can be modified in terms of starting and subsequent work rates, increments and duration of each stage. At the same time, the analysis of the blood lactate/ventilatory response to incremental exercise may vary due to the medium of blood analysed and the treatment (or mathematical modelling) of data following the test to model the metabolic inflection points. Modification of the stage duration during an incremental exercise test may influence the submaximal and maximal physiological variables. In particular, the peak power output is reduced in incremental exercise tests that have stages of longer duration. Furthermore, the VT or LT may also occur at higher absolute exercise work rate in incremental tests comprising shorter stages. These effects may influence the relationship of the variables to endurance performance or potentially influence the sensitivity of these results to endurance training. A difference in maximum work rate with modification of incremental exercise test design may change the validity of using these results for predicting performance, and prescribing or monitoring training. Sports scientists and coaches should consider these factors when conducting incremental exercise testing for the purposes of performance diagnostics.
Authors:
David J Bentley; John Newell; David Bishop
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Sports medicine (Auckland, N.Z.)     Volume:  37     ISSN:  0112-1642     ISO Abbreviation:  Sports Med     Publication Date:  2007  
Date Detail:
Created Date:  2007-06-27     Completed Date:  2007-09-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8412297     Medline TA:  Sports Med     Country:  New Zealand    
Other Details:
Languages:  eng     Pagination:  575-86     Citation Subset:  IM    
Affiliation:
School of Medical Sciences, Health and Exercise Science, The University of New South Wales, Sydney, New South Wales, Australia. j.bentley@unsw.edu.au
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MeSH Terms
Descriptor/Qualifier:
Anaerobic Threshold / physiology
Exercise Test / methods*
Humans
Oxygen Consumption / physiology
Physical Endurance / physiology*
Sports

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


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