| Lactate exchange and removal abilities in rowing performance. | |
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MedLine Citation:
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PMID: 9139180 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The relationships between individual performance and lactate exchange and removal abilities were studies in 12 male rowers all subjected to three measurements on a rowing ergometer. An incremental exercise carried out to determine the maximal oxygen uptake (VO2max) and the corresponding maximal aerobic power (Pamax), a 2500-m all-out test where the mean work rate (P2500) represented the individual performance, and a 6-min 90% Pamax exercise designed to assess the lactate kinetics during the following 90 min passive recovery were performed. The lactate recovery curves were fitted to the bi-exponential time function: La(t) = La(O) + A1(1-e-gamma 1.t) + A2(1-e-gamma 2.t). The velocity constants gamma 1 and gamma 2 denote the lactate exchange and removal abilities, respectively. The mean value of P2500 sustained by the rowers was 376 +/- 41W (106 +/- 5% of Pamax (P2500%). P2500 was positively correlated with gamma 2 (P < 0.05). gamma 1 and gamma 2 explained 67% of the P2500 variance. P2500% was also correlated with gamma 2 (P < 0.01). These results suggest that a better performance on the rowing ergometer is associated with improved lactate exchange and removal abilities. Furthermore, the ability to row at high relative work rates was correlated with an increased lactate removal ability. Training-induced adaptations could explain the high gamma 1 and gamma 2 displayed by the present rowers. |
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Authors:
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L Messonnier; H Freund; M Bourdin; A Belli; J R Lacour |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 29 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 1997 Mar |
Date Detail:
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Created Date: 1997-05-08 Completed Date: 1997-05-08 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 396-401 Citation Subset: IM; S |
Affiliation:
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Laboratoire de Physiologie-GIP Exercise, Faculté de Médecine, Oullins, France. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological Adult Algorithms Anaerobic Threshold Carbon Dioxide / analysis Ergometry Exercise Tolerance Follow-Up Studies Heart Rate Humans Lactates / blood, metabolism* Male Oxygen / analysis Oxygen Consumption Physical Endurance Psychomotor Performance / physiology* Pulmonary Gas Exchange Sports / physiology* Work / physiology |
| Chemical | |
Reg. No./Substance:
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0/Lactates; 124-38-9/Carbon Dioxide; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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