תזונה ותוספים Influence of Ingesting Versus Mouth-Rinsing a Carbohydrate Solution during a 1 H Run.

[Mike Bikov]

Med Sci Sports Exerc. 2010 Aug 2. [Epub ahead of print]
Influence of Ingesting Versus Mouth-Rinsing a Carbohydrate Solution during a 1 H Run.

Rollo I, Williams C, Nevill M.

School of Sport and Exercise and Health Sciences, Loughborough University.
Abstract

PURPOSE:: To investigate the influence of ingesting versus mouth-rinsing a carbohydrateelectrolyte solution on 1 h running performance. METHODS:: Following a 14-15 h fast, ten endurance-trained male runners (M +/- SD, V O2peak = 65.0 +/- 4.4 ml . kg . min) completed three 1 h performance runs separated by 1 week. In random order runners either ingested 8 ml . kg body mass of either a 6.4 % carbohydrateelectrolyte solution (CHO) or placebo solution (P) 30 min prior to and 2 ml . kg body mass at 15 min intervals throughout the 1 h run. On a separate occasion runners mouth-rinsed (R) a 6.4 % carbohydrate-electrolyte solution i.e. without ingestion, at the same times as in the ingestion trials. RESULTS:: Total distances covered in the CHO, P and R trials were 14515 + 756 m; 14190 +/- 800 m and 14283 +/- 758 m respectively. Runners covered 320 m more (90% CI of difference = 140 m to 510 m, P = 0.01) during the CHO trial compared to the P trial and 230 m more (90% CI of difference = 83 m to 380 m, P = 0.019) in comparison to the R trial. There was no difference in n distance covered between the R trial and P trial (P = 1.0). CONCLUSION:: A greater distance was covered following the mouth-rinse and ingestion of a 6.4% carbohydrate-electrolyte solution during a 1 h performance run than when mouth-rinsing the same solution or mouth-rinsing followed by the ingestion of the same volume of a placebo solution.​

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