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Journal of Nutrition and Metabolism
Volume 2011 (2011), Article ID 385962, 6 pages
Research Article

Carbohydrate Mouth Rinse Effects on Exercise Capacity in Pre- and Postprandial States

1Institute of Movement Science and Sports Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva 4, Switzerland
2Institute of Literature and Human Sciences, Physical Education Department, University of Balamand, Beirut, Lebanon

Received 29 December 2010; Accepted 20 July 2011

Academic Editor: Tommy Cederholm

Copyright © 2011 Elie-J. M. Fares and Bengt Kayser. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Oropharyngeal receptors signal presence of carbohydrate to the brain. Mouth rinses with a carbohydrate solution facilitate corticomotor output and improve time-trial performance in well-trained subjects in a fasted state. We tested for this effect in nonathletic subjects in fasted and nonfasted state. Methods. 13 healthy non-athletic males performed 5 tests on a cycle ergometer. After measuring maximum power output (Wmax), the subjects cycled four times at 60% Wmax until exhaustion while rinsing their mouth every 5 minutes with either a 6.4% maltodextrin solution or water, one time after an overnight fast and another after a carbohydrate rich breakfast. Results. Mouth rinsing with maltodextrin improved time-to-exhaustion in pre- and postprandial states. This was accompanied by reductions in the average and maximal rates of perceived exertion but no change in average or maximal heart rate was observed. Conclusions. Carbohydrate mouth rinsing improves endurance capacity in both fed and fasted states in non-athletic subjects.