What the study found
Repeated caffeine mouth-rinsing did not significantly improve cycling time-trial performance or raise plasma caffeine compared with placebo.
Participants and protocol
Ten trained male cyclists completed double-blind crossover trials, rinsing eight times during an approximately hour-long cycling task.
What this cannot establish
This tests oral rinsing rather than swallowed caffeine. A null result for this protocol does not establish equivalence across all rinses, doses or sports.
Publication details
- Record
- PubMed 23980239
- Publication types
- Randomized Controlled Trial
- Indexed subjects
- Mouth · Lactic Acid · Caffeine · Mouthwashes · Exercise Test
- 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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Performance Science Lab
Research summaries for endurance athletes, with study context, practical protocols, and clear limitations.
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