What the study found
Adding either protein hydrolysate did not improve time-trial performance over carbohydrate alone. Casein changed measured fuel use and performed better than water, which is a different comparison.
Participants and protocol
Eight male cyclists completed four double-blind crossover conditions during two hours of cycling followed by a sixteen-kilometre time trial.
What this cannot establish
The small study used magnitude-based statistical interpretation. A comparison with water must not be presented as proof that protein is superior to sufficient carbohydrate.
Publication details
- Record
- PubMed 25941925
- Publication types
- Comparative Study · Research Support, Non-U.S. Gov't · Randomized Controlled Trial
- Indexed subjects
- Dietary Carbohydrates · Fructose · Polysaccharides · Caseins · Cross-Over Studies
- Source record checked
- 2026-10-18
Publication type and subject indexing describe the record; they are not a quality grade or proof of a benefit. An abstract does not replace a review of the full methods and results.
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