Document Detail


Lactate exchange and removal abilities in rowing performance.
MedLine Citation:
PMID:  9139180     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
L Messonnier; H Freund; M Bourdin; A Belli; J R Lacour
Publication Detail:
Type:  Journal Article    
Journal Detail:
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:
Created Date:  1997-05-08     Completed Date:  1997-05-08     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  396-401     Citation Subset:  IM; S    
Affiliation:
Laboratoire de Physiologie-GIP Exercise, Faculté de Médecine, Oullins, France.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
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:
0/Lactates; 124-38-9/Carbon Dioxide; 7782-44-7/Oxygen

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


Previous Document:  Metabolic profile of high intensity intermittent exercises.
Next Document:  Detection of ventilatory threshold using near infrared spectroscopy in men and women.