Abstract

MAMUS, Renata  and  SANTOS, M. Gisele. Biochemical Effects of Carbohydrates Supplementation in a Simulated Short Land Duathlon Competition. Rev. Port. Cien. Desp. [online]. 2006, vol.6, n.1, pp.29-37. ISSN 1645-0523.

This study aimed to investigate the biochemical effects of carbohydrates supplementation in a simulated short land duathlon competition. Sample size consisted of 14 athletes that ingested supplements of a 6% maltodextrin solution (G1), placebo (G2), and a 6% glucose solution (G3), in three different moments of the simulated competition: 30 min before de competition (500ml), every 15 min during the competition (200ml), and immediately after the end of the competition (300ml). Blood sampling was obtained during two stages of the competition - before and immediately after the end - to blood glucose, lactate, insulin and cortisol analyses. We found significant differences at glucose concentrations between G1 and G2 after competition. When lactate concentrations were analysed, it was also found a significant difference in G1 and G2 during the competition, as well, in the cortisol concentrations during the competition (G1) and after competition (G2). We conclude that the maltodextrin supplementation provides biochemical evidence that favors its ingestion in simulated short land duathlon competition.

Keywords : carbohydrates; competition; glucose; lactate; insulin; cortisol.

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