Research summary · Nutrition and recovery
Hydration status and the early response to post-exercise whey
Thirteen young men completed treadmill sessions with no, partial or full fluid replacement, followed by the same whey-protein drink. Researchers measured circulating amino acids over two hours; the no-fluid session always occurred first.
- Publication year
- 2026
- First published online
- Publication type
- Partially randomized crossover experiment
- Journal
- Nutrients
- Population / context
- Treadmill exercise in healthy young men
What the publication reports
Approximately 2.2% body-mass loss was followed by a smaller early rise in several amino-acid measures than the better-hydrated conditions. Amino acids still increased in every condition, and gastrointestinal symptoms generally remained low.
Limits and interpretation
Fixed ordering of the dehydrated condition permits order effects. The small male sample was not professionally trained. Blood amino-acid concentrations do not establish changes in muscle protein synthesis, recovery or later performance, and this study cannot define an optimal hydration threshold.
Read the source
Consult the original record for the full author list, methods, references, funding and competing-interest disclosures.
Exercise-Induced Dehydration Limits the Effectiveness of Post-Exercise Whey Protein Supplementation in Healthy Young Men
Original publication / indexed recordPMID: 42884718DOI: 10.3390/nu18193267Full text at the sourceReader discussion
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