Efeito do bochecho de carboidrato sobre a força e a resistência muscular: uma revisão sistemática com metanálise

Abstract

The effect of carbohydrate (CHO) mouth rinse on performance was first investigated in 2004, raising the hypothesis that CHO mouth rinse has its ergogenic effect through a central mechanism. From these findings, a heterogeneity of exercise protocols, such as cycling and running against the clock; sprints; vertical jump; jump against movement; intermittent exercises; high intensity exercises; isometric muscle strength exercises; dynamic muscle strength exercises and muscle endurance exercises were used to investigate the effects of CHO mouth rinse on performance. Considering the possible effects of the CHO mouth rinse on the development of premature fatigue and on the increase in power that contribute to a better physical performance, the CHO mouth rinse is a potential strategy for strength exercises. However, still little investigated. Thus, this dissertation presents a review chapter, addressing the effect of CHO mouth rinse on highintensity exercise, as well as a systematic review with meta-analysis that evaluates studies that investigated the effect of CHO mouth rinse on strength and endurance muscle. Eleven studies were analyzed in the systematic review, no difference was observed between the CHO and PLA conditions on all 4 of the studies that investigated the 1 RM test; and, among the eleven studies that evaluated the number of repetitions to failure, five observed a positive effect of the CHO mouth rinse. As for the meta-analysis, there was no significant difference in maximum muscle strength (1RM test), but there was a significant difference in muscle endurance (number of repetitions to failure) in the CHO condition when compared to the PLA condition, demonstrating that the CHO mouth rinse has an ergogenic effect on muscle endurance but not on maximal muscle strength.