Document Detail


Effects of a prior short simulated training session on the subsequent occurrence of ventilatory thresholds.
MedLine Citation:
PMID:  18282743     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The concept of ventilatory thresholds (VTs) has been shown to be particularly useful to prescribe exercise intensities, yet, to date no study has examined the effects of previous submaximal exercise (i.e. a simulated training session) on the subsequent occurrence of VTs. We designed the present study to test the hypothesis that a previous short simulated training session induces an earlier VTs occurrence. Thirteen trained subjects perfomed two classical incremental tests on a cycle ergometer. The two tests were separated by a time period of 2-5 days, and the second test was preceded by a 34-min simulated training session. The first and second VTs (VT(1) and VT(2), respectively) were detected and expressed in their corresponding values of time, V O(2), and power output. The simulated training session did not modify VT(1) occurrence. In contrast, VT(2) was influenced by the simulated training session, showing a significant earlier occurence when VT(2) was expressed in time [-42 (-72; -13)s] and in power output [-15 (-25; -5)W]. Maximal power tolerated (MPT) was also significantly reduced by the previous exercise [-17 (-27; -7)W]. As a consequence, training intensities based on power output (associated with VT(2) or in %MPT) would be overestimated (i.e. higher metabolic state) after a short period of training session. Thus, doubt is cast on the pertinence of using the power output (or running speed by extension) for prescription of exercise during prolonged training sessions.
Authors:
Gaël Guilhem; Sylvain Dorel; Francois Hug
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Publication Detail:
Type:  Journal Article     Date:  2008-02-20
Journal Detail:
Title:  Journal of science and medicine in sport / Sports Medicine Australia     Volume:  12     ISSN:  1440-2440     ISO Abbreviation:  J Sci Med Sport     Publication Date:  2009 Mar 
Date Detail:
Created Date:  2009-03-16     Completed Date:  2009-05-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9812598     Medline TA:  J Sci Med Sport     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  273-9     Citation Subset:  IM    
Affiliation:
National Institute for Sports (INSEP), Paris, France; University of Nantes, Nantes Atlantic Universities, Nantes, France.
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MeSH Terms
Descriptor/Qualifier:
Adult
Anaerobic Threshold / physiology*
Case-Control Studies
Exercise / physiology*
Exercise Test
Exercise Tolerance / physiology*
Fatigue
Humans
Male
Young Adult

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