The Beverage Hydration Index: Influence of Electrolytes, Carbohydrate and Protein
Sollanek KJ, Kenefick RW
Published in Nutrients
Methodology
Randomized crossover trial testing beverages varying in electrolyte, carbohydrate and protein content on fluid retention.
Key Findings
Sodium content was the dominant driver of improved fluid retention; carbohydrate and protein added little.
Conclusions
Electrolyte (sodium) provision, not macronutrients, best explains superior hydration retention.
Limitations
Small sample, laboratory conditions, no exercise heat stress.
Supplements Studied
Electrolyte content appears to make the largest contribution in hydration properties of beverages
Outcomes Measured
The Beverage Hydration Index: Influence of Electrolytes, Carbohydrate and Protein
Sodium content was the dominant driver of improved fluid retention; carbohydrate and protein added little.
Study Details
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