Effects of previous carbohydrate supplementation on muscular fatigue: double-blind, randomized, placebo-controlled crossover study
Battazza, Rafael A; Suzuki, Frank S; Kalytczak, Marcelo M; Paunksnis, Marcos R. R; Politi, Fabiano; Evangelista, Alexandre L; Serra, Andrey J; Teixeira, Cauê V. L. S; Rica, Roberta L; Pontes Junior, Francisco Luciano; Bergamin, Marco; Bocalini, Danilo S.
Motriz (Online);
25(1): e101844, 2019. tab, ilus
Artículo
en Inglés
| LILACS | ID: biblio-1012686
Aims:
The aim of this study was to examine the effects of previous carbohydrate supplementation on high-volume resistance exercise performanceMethods:
Twenty males physically independent adults aged ≥18 years participated in a double-blind randomized placebo-controlled crossover study. Sixty minutes before the experimental protocol, each participant ingested 0,6 g.kg of body mass-1 of carbohydrate supplementation or placebo. Maximum voluntary isometric contraction tests were performed before and after the dynamic fatigue induction protocol consisting of 10 sets of 8 repetitions of right leg knee extensors at 120º s-1.Results:
Lower decrement of the isometric peak torque (p<0,001) and of the rate of torque development (p<0,001) was observed in carbohydrate supplementation after the dynamic protocol. Both concentric and eccentric peak torque differed significantly (p<0,001) between carbohydrate supplementation and placebo treatments from the second set, although the slope of the force-repetitions curve was not different between them. Additionally, the carbohydrate supplementation resulted in a lower session rating of perceived exertion (p<0,05).Conclusions:
Previous carbohydrate supplementation attenuates muscle fatigue and internal load exercise in a high-volume isokinetic leg protocol.(AU)
Biblioteca responsable:
BR1.1
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