Effect of a small dose of alcohol on the endurance performance of trained cyclists.

Détails

Ressource 1Télécharger: BIB_CF2772B1E1B5.P001.pdf (208.50 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_CF2772B1E1B5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Effect of a small dose of alcohol on the endurance performance of trained cyclists.
Périodique
Alcohol and Alcoholism
Auteur(s)
Lecoultre V., Schutz Y.
ISSN
1464-3502 (Electronic)
ISSN-L
0735-0414
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
44
Numéro
3
Pages
278-283
Langue
anglais
Résumé
AIM: The aim of this study was to investigate the effect of an acute small ethanol (EtOH) dose (0.5 ml EtOH/kg fat-free mass, combined with carbohydrate) in a drink on endurance performance of trained cyclists.
METHODS: Thirteen well-trained male cyclists took part in this study. A 60-min cycling endurance performance test (time trial) was performed in a calorimetric chamber after drinking an EtOH (30 +/- 1.8 ml) or a non-EtOH control (C) drink.
RESULTS: Overall, EtOH induced a significant decrease in the average cycling power output (PO) (EtOH: 233 +/- 23 W versus C: 243 +/- 24 W, P < 0.01). The time course of mechanical PO showed an early decrease during the EtOH trial as compared to C (P < 0.01). Due to the lower PO, oxygen consumption, carbon dioxide production and glucose oxidation were significantly lower (P < 0.05) as compared to C. Relative to PO, heart rate response and ratings of perceived exertion (RPE) were increased by EtOH as compared to C (P < 0.05). In contrast, EtOH did not influence gross work efficiency, glycaemia and blood lactate concentration.
CONCLUSIONS: These results show that the acute low dose of EtOH decreased endurance performance. An increase of cardio-vascular strain and psychobiological mechanisms may explain this decrease of endurance performance.
Mots-clé
Adult, Alcohol Drinking/metabolism, Alcohol Drinking/psychology, Athletic Performance/physiology, Athletic Performance/psychology, Bicycling/physiology, Ethanol/administration & dosage, Exercise Test/drug effects, Exercise Test/methods, Humans, Male, Oxygen Consumption/drug effects, Oxygen Consumption/physiology, Physical Endurance/drug effects, Physical Endurance/physiology, Young Adult
Pubmed
Web of science
Open Access
Oui
Création de la notice
10/03/2010 11:41
Dernière modification de la notice
20/08/2019 16:49
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