The effects of a carbonated carbohydrate drink on gastric emptying, gastrointestinal distress, and exercise performance

Zachwieja, Jeffrey J., Costill, David L., Beard, Glenn C., Robergs, Robert A., Pascoe, David D., & Anderson, Dawn E. (1992) The effects of a carbonated carbohydrate drink on gastric emptying, gastrointestinal distress, and exercise performance. International Journal of Sport Nutrition & Exercise Metabolism, 2(3), pp. 239-250.

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To determine the effect of a carbonated carbohydrate (CHO) drink on gastric function and exercise performance, eight male cyclists completed four 120-min bouts of cycling. Each bout consisted of a 105-min ride at 70 VO2max followed by a 15-min self-paced performance ride. During each trial, one of four test solutions was ingested: carbonated CHO (C-10), noncarbonated CHO (NC-10), carbonated non-CHO (C), and noncarbonated non-CHO (NC). Following the performance ride, the subjects had their stomach contents removed by aspiration. There were no significant differences in gastric emptying (GE) except for Trial C-10, which averaged 13.3 less than NC. However, there was no difference in the perception of gastrointestinal comfort between this trial and any other. Average power output during the performance ride was not significantly different between carbonated and noncarbonated trials, or between CHO-fed and no-CHO trials; however, the subjects worked at a greater intensity when fed CHO. Finally, acid base status did not change when a carbonated drink was ingested. This indicates that adding carbonation to a sport drink does not significantly alter gastric function, the perception of GI comfort, or exercise performance.

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ID Code: 96693
Item Type: Journal Article
Refereed: Yes
Keywords: carbohydrate; carbon dioxide, adult; article; bicycle; blood; carbonated beverage; drug effect; exercise; gastrointestinal tract; glucose blood level; human; male; metabolism; oxygen consumption; pH; physiology; stomach emptying, Adult; Bicycling; Blood Glucose; Carbohydrates; Carbon Dioxide; Carbonated Beverages; Exercise; Gastric Emptying; Gastrointestinal System; Human; Hydrogen-Ion Concentration; Male; Oxygen Consumption; Support, Non-U.S. Gov't
ISSN: 1526-484X
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Schools > School of Exercise & Nutrition Sciences
Copyright Owner: Copyright 1992 Human Kinetics, Inc.
Deposited On: 07 Jul 2016 06:23
Last Modified: 08 Jul 2016 01:55

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