| Influence of exercise mode and maximal lactate-steady-state concentration on the validity of OBLA to predict maximal lactate-steady-state in active individuals. | |
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MedLine Citation:
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PMID: 17553745 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The aim of this study was to analyze the effects of exercise mode on the validity of onset of blood lactate accumulation (OBLA-3.5-mM fixed blood lactate concentration) to predict the work-rate at maximal lactate steady state (MLSS(work-rate)). Eleven recreationally active males (21.3+/-2.9 years, 72.8+/-6.7kg, 1.78+/-0.1m) performed randomly incremental tests to determine OBLA (stage duration of 3min), and 2 to 4 constants work-rate exercise tests to directly determine maximal lactate steady state parameters on a cycle-ergometer and treadmill. For both exercise modes, the OBLA was significantly correlated to MLSS(work-rate), (cycling: r=0.81 p=0.002; running: r=0.94, p<0.001). OBLA (156.2+/-41.3W) was lower than MLSS(work-rate) (179.6+/-26.4W) during cycling exercise (p=0.007). However, for running exercise, there was no difference between OBLA (3.2+/-0.6ms(-1)) and MLSS(work-rate) (3.1+/-0.4ms(-1)). The difference between OBLA and MLSS(work-rate) on the cycle-ergometer (r=0.86; p<0.001) and treadmill (r=0.64; p=0.048) was significantly related to the specific MLSS. We can conclude that the validity of OBLA on predicting MLSS(work-rate) is dependent on exercise mode and that its disagreement is related to individual variations in MLSS. |
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Authors:
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Tiago R Figueira; Fabrizio Caputo; Jailton G Pelarigo; Benedito S Denadai |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Validation Studies Date: 2007-06-05 |
Journal Detail:
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Title: Journal of science and medicine in sport / Sports Medicine Australia Volume: 11 ISSN: 1440-2440 ISO Abbreviation: J Sci Med Sport Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-04-28 Completed Date: 2008-10-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9812598 Medline TA: J Sci Med Sport Country: Australia |
Other Details:
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Languages: eng Pagination: 280-6 Citation Subset: IM |
Affiliation:
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Human Performance Laboratory, UNESP, Brazil. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Bicycling Exercise / physiology* Exercise Test Humans Lactic Acid / blood* Male Physical Endurance / physiology Predictive Value of Tests Running |
| Chemical | |
Reg. No./Substance:
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50-21-5/Lactic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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