The Effects Of Ingesting a Carbohydrate-Electrolyte Beverage 15 Minutes Prior to High-Intensity Exercise Performance
The aim of this study was to examine the effect of ingesting a commercially available carbohydrate-electrolyte (CHO-E) solution on strenuous exercise performance. Ten apparently healthy male volunteers (Mean ± SD; age 20 ± 2 yrs; height 178 ± 7 cm; body mass 77 ± 10 kg; estimated VO 2max 56 ± 3 ml −...
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Published in | Research in sports medicine Vol. 16; no. 3; pp. 155 - 166 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Taylor & Francis Group
16.09.2008
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Subjects | |
Online Access | Get full text |
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Summary: | The aim of this study was to examine the effect of ingesting a commercially available carbohydrate-electrolyte (CHO-E) solution on strenuous exercise performance. Ten apparently healthy male volunteers (Mean ± SD; age 20 ± 2 yrs; height 178 ± 7 cm; body mass 77 ± 10 kg; estimated VO
2max
56 ± 3 ml
−
kg
−1−
min
−1
) completed three experimental trials in random order separated by a minimum of 7 days. For each trial, subjects consumed (8 ml.kg
−1
body mass) either a CHO-E solution (6% carbohydrate, 50 mg Na/500 ml), a non-CHO-E placebo, or no fluid, 15 minutes prior to exercise. The exercise involved intermittent shuttle (20 m apart) running for 1 hr followed by an incremental shuttle running test to exhaustion. Subjects displayed longer exercise times when the CHO-E solution was ingested compared with placebo or no fluid groups (exercise time to exhaustion - CHO-E 649 ± 95 s, vs. placebo 601 ± 83 s, vs. no fluid 593 ± 107 s, P < 0.05). There was a main effect for time for specific gravity of urine (P < 0.05 vs. postexercise, pooled data) and body mass (P < 0.05 vs. postexercise, pooled data). The main finding from this investigation indicates that drinking a CHO-E solution 15 minutes prior to exercise improves performance. This study has practical implications for those sports where drinking during activity is restricted. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-News-1 ObjectType-Feature-3 |
ISSN: | 1543-8627 1543-8635 |
DOI: | 10.1080/15438620802103155 |