Investigating the associations between hydration and exercise performance: methodology and limitations
1Loughborough University, School of Sport, Exercise and Health Sciences, Loughborough, UK. r.maughan@lboro.ac.uk
Nutrition Reviews
|November 6, 2012
Summary
Dehydration can impair physiological functions, but drinking sufficient water, particularly cold water, can enhance exercise performance. The exact point at which dehydration affects performance is debated due to varying study methods and subject characteristics.
Area of Science:
- Exercise Physiology
- Sports Science
- Human Performance
Background:
- Body water content fluctuates daily without impacting performance.
- Severe dehydration impairs physiological functions.
- The threshold for performance impairment due to dehydration is debated.
Purpose of the Study:
- To clarify the impact of dehydration on physiological functions and exercise performance.
- To review the factors influencing the observed effects of dehydration.
- To assess the benefits of water ingestion on exercise capacity.
Main Methods:
- Analysis of existing studies on dehydration and exercise.
- Comparison of different methodologies for inducing dehydration.
- Consideration of subject characteristics and their influence on outcomes.
Main Results:
- Water intake, especially cold water, can improve exercise performance.
- Subjective responses are influenced by the act of drinking and water access denial.
- Separating water's effect from other drink components is challenging in studies.
Conclusions:
- Appropriate water consumption is crucial for maintaining and enhancing exercise performance.
- Further research is needed to standardize dehydration studies.
- Cold water may offer additional performance benefits during exercise.
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