The influence of carbohydrate mouth rinse on self-selected speeds during a 30-min treadmill run

Int J Sport Nutr Exerc Metab. 2008 Dec;18(6):585-600. doi: 10.1123/ijsnem.18.6.585.

Abstract

The purpose of this study was to examine the influences of a carbohydrate (CHO) mouth rinse on self-selected running speeds during a 30-min treadmill run. Ten endurance-trained men performed 2 trials, each involving a 10-min warm-up at 60% VO2max followed by a 30-min run. The run was performed on an automated treadmill that allowed the spontaneous selection of speeds without manual input. Participants were asked to run at speeds that equated to a rating of perceived exertion of 15, mouth rinsing with either a 6% CHO or taste-matched placebo (PLA) solution. In addition to recording self-selected speeds and total distance covered the authors assessed the runners' subjective feelings. The total distance covered was greater during the CHO than during the PLA trial (p < .05). Faster speeds selected during the first 5 min of exercise corresponded with enhanced feelings of pleasure when mouth rinsing with the CHO solution. Mouth rinsing with a CHO solution increased total distance covered during a self-selected 30-min run in comparison with mouth rinsing with a color- and taste-matched placebo.

Publication types

  • Clinical Trial

MeSH terms

  • Adult
  • Dietary Carbohydrates / administration & dosage
  • Dietary Carbohydrates / pharmacology*
  • Dietary Supplements
  • Energy Metabolism / drug effects*
  • Exercise / physiology*
  • Exercise / psychology
  • Exercise Test
  • Humans
  • Physical Exertion / drug effects*
  • Running / physiology*
  • Running / psychology
  • Young Adult

Substances

  • Dietary Carbohydrates