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Influence of ingesting a carbohydrate-electrolyte solution before and during a 1-hr running performance test
1School of Sport and Exercise Sciences, Loughborough University, Loughborough, UK.
International Journal of Sport Nutrition and Exercise Metabolism
|February 24, 2010
Summary
Ingesting a carbohydrate-electrolyte (CHO-E) solution significantly improved running performance in trained male runners compared to a placebo. This finding highlights the benefits of CHO-E supplementation for endurance exercise.
Area of Science:
- Sports Science
- Exercise Physiology
- Nutritional Science
Background:
- Endurance athletes often use carbohydrate-electrolyte solutions to enhance performance.
- The specific impact of these solutions on prolonged running performance requires further investigation.
Purpose of the Study:
- To determine the effect of a 6.4% carbohydrate-electrolyte (CHO-E) solution on 1-hour treadmill running performance in trained male runners.
Main Methods:
- A double-blind, placebo-controlled study involving eight male endurance-trained runners.
- Participants completed three 1-hour treadmill runs, consuming either a placebo (PLA) or a 6.4% CHO-E solution before and during exercise.
- Performance was measured by total distance covered.
Main Results:
- Runners covered significantly greater distances when ingesting the CHO-E solution compared to the placebo (14,046m vs. 13,700m).
- CHO-E ingestion led to higher blood glucose at exercise onset but did not affect blood lactate or substrate oxidation.
- No significant difference was observed between the two placebo trials.
Conclusions:
- Ingesting a 6.4% carbohydrate-electrolyte solution before and during a 1-hour run improves running performance in trained male runners.
- CHO-E supplementation appears to be an effective ergogenic aid for endurance running.
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