Acute effect of energy drink ingestion on Crossfit performance: a randomized, double-blind, crossover study
DOI:
https://doi.org/10.11606/issn.1981-4690.v35i3p17-26Palavras-chave:
Aptidão física, Exercício físico, Resistência Física, Técnicas de exercício e de movimento, Teste de EsforçoResumo
Analisar os efeitos agudos da ingestão de bebida energética (BE) no desempenho do CrossFit. Em um estudo cruzado, randomizado, duplo-cego, 8 treinados no CrossFit foram alocados aleatoriamente em 2 grupos e foram submetidos a 2 ensaios separados por um período de washout de 7 dias. Os participantes ingeriram uma dose de 300 mL de BE ou Placebo (refrigerante), 30 minutos antes do início dos testes de força muscular (FM), 10 e 12 repetições máximas (RMs) no supino reto (SR) e agachamento com barra (A), respectivamente, e resistência muscular localizada (RML) usando o Workout of the Day (WOD) selecionado. As percepções subjetivas de esforço (PSE) e dor (PSD) foram avaliadas imediatamente após os testes. O volume total de repetições (VTR) foi avaliado para cada teste. O VTR foi significativamente maior após consumir a BE (p = 0,012) e o Placebo (p = 0,027). Houve redução da taxa de PSE após o consumo de ambas as bebidas (p = 0,023 e p = 0,024). O consumo de BE reduziu significativamente a taxa de PSE (p = 0,017). A ingestão aguda de BE melhorou o desempenho do CrossFit principalmente por meio de uma maior tolerância à dor.
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