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Carbohydrate-gel supplementation and endurance performance during intermittent high-intensity shuttle running

Patterson, Stephen and Gray, Susan (2007) Carbohydrate-gel supplementation and endurance performance during intermittent high-intensity shuttle running. International Journal of Sports Nutrition and Exercise Metabolism, 17 (5). ISSN 1526-484X

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Abstract/Description

The aim of this study was to investigate the effects of a carbohydrate (CHO) gel on performance after prolonged intermittent high-intensity shuttle running. Seven male soccer players performed 2 exercise trials, 7 d apart. On each occasion, participants completed five 15-min periods of intermittent variable-speed running, interspersed with periods of walking (Part A), followed by an intermittent run to exhaustion (Part B). Participants consumed either a CHO gel or placebo (PLA) immediately before exercise (0.89 mL/kg body mass [BM]) and every 15 min thereafter (0.35 mL/kg BM). In addition, water was consumed at a rate of 5 mL/kg BM before and 2 mL/kg BM every 15 min during exercise. Blood glucose levels were higher (P < 0.05) at 15, 30, and 60 min of exercise and at exhaustion in CHO than in PLA. During Part B, run time to exhaustion was longer (P < 0.05) in the CHO trial (CHO 6.1 ± 1.3 min vs. PLA 4.2 ± 1.2 min). These results indicate that ingesting a CHO gel, along with water, improves performance after prolonged intermittent running in healthy male subjects, possibly by maintaining blood glucose levels during exercise.

Item Type: Article
Print ISSN: 1526-484X
Electronic ISSN: 1543-2742
Uncontrolled Keywords: Carbohydrate gel; Shuttle running; Blood glucose levels
University Divisions/Research Centres: Faculty of Health, Life & Social Sciences > School of Life Sciences
Dewey Decimal Subjects: 600 Technology > 610 Medicine & health > 612 Human physiology
Library of Congress Subjects: Q Science > QP Physiology
Item ID: 1653
Depositing User: RAE Import
Date Deposited: 24 Jun 2008 16:54
Last Modified: 09 Jul 2010 15:21
URI: http://researchrepository.napier.ac.uk/id/eprint/1653

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