Effects of carbohydrate intake on time to exhaustion and anaerobic contribution during supramaximal exercise

• Autor(a) principal: BASTOS-SILVA, Victor José
• Data de Publicação: 2023
• Outros Autores: LEARSI, Sara Kely, de Albuquerque MELO, Alan, LIMA-SILVA, Adriano Eduardo, Gomes de ARAUJO, Gustavo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista de Nutrição
• Texto Completo: https://periodicos.puc-campinas.edu.br/nutricao/article/view/8113
• topic: Anaerobic capacity; Athletic performance; Fatigue; Sports nutritional sciences; Capacidade anaeróbia; Desempenho atlético; Fadiga; Ciência da nutrição e do esporte

ObjectiveThis study evaluated the effect of carbohydrate intake on time to exhaustion and anaerobic contribution during supramaximal exercise on a cycle ergometer. MethodsThe sample comprised ten participants with a mean age of 23.9±2.5 years, mean body mass of 75.1±12.3 kg, mean height of 170.0±1.0 cm, and mean body fat of 11.3±5.2%. The participants underwent an incremental test to determine maximal oxygen uptake and maximum power output, and two supramaximal tests with a constant load of 110% of the maximum power output to exhaustion. Thirty minutes before the supramaximal tests the participants consumed carbohydrates (2 g.kg-1) or placebo. ResultsThe times to exhaustion of carbohydrate and placebo did not differ (carbohydrate: 170.7±44.6s; placebo: 156.1±26.7s, p=0.17; effect size=0.39). Similarly, the anaerobic contributions of the two treatments did not differ (carbohydrate: 3.0±0.9 L; placebo: 2.7±1.1 L, p=0.23; effect size=0.29). ConclusionCarbohydrate intake was not capable of increasing time to exhaustion and anaerobic contribution in physically active men cycling at 110% of maximum power output.