Journal article
Gastric Emptying and Intestinal Absorption of a Low-Carbohydrate Sport Drink during Exercise
International journal of sport nutrition and exercise metabolism, Vol.15(3), pp.220-235
06/2005
DOI: 10.1123/ijsnem.15.3.220
PMID: 16131694
Abstract
The purpose of this study was to determine if lowering carbohydrate (CHO) concentration in a sport drink influences gastric emptying, intestinal absorption, or performance during cycle ergometry (85 min, 60% VO2peak). Five subjects (25 ± 1 y, 61.5 ± 2.1 mL · kg−1 · min−1 VO2peak) ingested a 3% CHO, 6% CHO, or a water placebo (WP) beverage during exercise. Gastric emptying was determined by repeated double sampling and intestinal absorption by segmental perfusion. Total solute absorption and plasma glucose was greater for 6% CHO; however, neither gastric emptying, intestinal water absorption, or 3-mi time trial performance (7:58 ± 0:33 min, 8:13 ± 0:25 min, and 8:25 ± 0:29 min, respectively, for 6% CHO, 3% CHO, and WP) differed among solutions. These results indicate lowering the CHO concentration of a sport drink from 6% CHO does not enhance gastric emptying, intestinal water absorption, or time trial performance, but reduces CHO and total solute absorption.
Details
- Title: Subtitle
- Gastric Emptying and Intestinal Absorption of a Low-Carbohydrate Sport Drink during Exercise
- Creators
- Jennifer Rogers - University of IowaRobert W. Summers - University of IowaG. Patrick Lambert - Department of Exercise Science and Pre-Health Professions
- Resource Type
- Journal article
- Publication Details
- International journal of sport nutrition and exercise metabolism, Vol.15(3), pp.220-235
- DOI
- 10.1123/ijsnem.15.3.220
- PMID
- 16131694
- ISSN
- 1526-484X
- eISSN
- 1543-2742
- Language
- English
- Date published
- 06/2005
- Academic Unit
- Health and Human Physiology; Athletic Training Program
- Record Identifier
- 9984267141102771
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