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Malgre les risques potentiels, des judokas pratiquent la perte rapide volontaire de poids en periode de competition. L’objectif de la presente etude etait de mesurer les modifications induites par la perte rapide volontaire de poids (PRVP) sur les parametres hydro-electrolytiques et les performances lors des tests de terrain, chez les judokas de Cote d’Ivoire pendant un camp d’entrainement (CE) de 15 jours. Pendant le CE, 33 judokas (22,8 ± 3,3 ans) dont 25 hommes et 8 dames ont accepte de participer a cette etude prospective. Le poids, les concentrations des electrolytes urinaires, les performances a trois tests de terrain, la densite urinaire ont ete evalues juste avant et a la fin du CE. A la fin du CE, les judokas pratiquants de la PRVP (groupe PP), ont perdu en moyenne 6,0 ± 0,2% de leur poids (p 0,05). Dans le groupe PP, la concentration de K+ a augmente de 32,0% (p = 0,03) tandis que le ratio Na/K, les performances au « special judo fitness test », au saut en squat et le O2 max ont baisse respectivement de 31,4% (p = 0,04), 4,2% (p 0,05). Au regard des risques que la PRVP presente pour la sante et la performance, tous les acteurs devraient comprendre la necessite en cas de besoin, de proceder par une perte lente et progressive de poids en periode de preparation aux competitions. Mots cles: Judo, test de terrain, electrolytes, perte rapide volontaire de poids, deshydratation, Afrique subsaharienne. English Title: Effect of rapid weight loss during a two-week training camp on hydro electrolytic parameters and performance of elite judokas in Ivory Coast Despite the potential risks, judokas practice rapid weight loss during competitive periods. The objective of this study was to measure the  changes induced by rapid weight loss (RWL) on hydro-electrolytic  parameters and performance during field tests in judokas from Ivory Coast during a 15-day training camp (TC). During the TC, 33 judokas (22.8 ± 3.3 years old) including 25 men and 8 women agreed to participate in this prospective study. Weight, urinary electrolyte concentrations, performance in three field tests, urinary density were assessed just before and at the end of the TC. At the end of the TC, the judokas practicing RWL (PP group), lost on average 6.0 ± 0.2% of their weight (p 0.05). In the PP group, the concentration of K+ increased by 32.0% (p = 0.03) while the Na/K ratio, performance in the special judo fitness test, squat jump and VO2 max decreased by 31.4% (p = 0.04), 4.2% (p 0.05). In view of the health and performance risks that the RWL poses, all stakeholders should understand the need, if necessary, to proceed with a slow and gradual weight loss during the preparation period for competitions. Keywords : Judo, field test, electrolytes, rapid weight loss, dehydration, sub-Saharan Africa.

international journal of biological and chemical sciences

Effet de la perte rapide volontaire de poids au cours d’un camp d’entraînement de deux semaines sur les paramètres hydro-électrolytiques et les performances des judokas de l’élite en Côte d’Ivoire