Research summary · Nutrition and supplements
A single energy-drink serving in female volleyball
A crossover experiment tests whether a standard commercial energy-drink serving improves short-duration anaerobic performance in female volleyball players.
- Publication year
- 2026
- First published online
- Publication type
- Randomized double-blind placebo-controlled crossover trial
- Journal
- Nutrition and Health
- Population / context
- Female sub-elite volleyball players
What the publication reports
Fifteen women completed drink and placebo visits one week apart. Approximately 251 mL supplied 80 mg caffeine, with testing 33 minutes later. None of 13 Wingate, handgrip or jumping outcomes differed significantly; eight participants reported mild nausea after the energy drink.
Limits and interpretation
The sample was small and the trial tested one product, low caffeine dose and acute schedule. A nonsignificant result does not establish equivalence or exclude effects at other doses, and it should not be generalized to caffeine supplementation overall.
Read the source
Consult the original record for the full author list, methods, references, funding and competing-interest disclosures.
The effect of Red Bull energy drink on strength, power, and jump performance in female volleyball players: A randomized cross-over trial
Original publication / indexed recordPMID: 42858003DOI: 10.1177/02601060261497483Reader discussion
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