Trial reportEuropean journal of nutrition2024
Caffeine gum improves 5 km running performance in recreational runners completing parkrun events.
Trial report in European journal of nutrition, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02473575 (Does a Commercial Caffeine Supplement Improve 5 km Run Performance in a Field Setting?), which is not on this map. Cited by 6 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Does a Commercial Caffeine Supplement Improve 5 km Run Performance in a Field Setting?
Who cites it
6 citing papers in PubMed, 4 syntheses or guidelines pooled it, 3 citations in OpenAlex.
- Fast-Acting Caffeine Strategy: A Systematic Review and Meta-Analysis of the Ergogenic Effects of Caffeine Chewing Gum on Physical Performance.Sports medicine - open · 2026Pooled it
- Caffeine Use in Sport: A Systematic Review and Meta-analysis of Acute Side Effects and Implications for Athlete Health and Safety.Sports medicine (Auckland, N.Z.) · 2026Pooled it
- Effects of Caffeine Dose and Administration Method on Time-Trial Performance: A Systematic Review and Network Meta-Analysis.Nutrients · 2025Pooled it
- Effects of Caffeinated Chewing Gum on Exercise Performance and Physiological Responses: A Systematic Review.Nutrients · 2024Pooled it
- The effects of caffeinated chewing gum on sprint swimming performance and upper-body strength: a randomized crossover study.BMC nutrition · 2026Article
- Effects of caffeinated gum doses combined with post-activation performance enhancement on bench-press bar velocity: a randomized crossover study.Frontiers in nutrition · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe purpose of this study was to determine whether caffeine gum improves the performance of recreational runners completing parkruns (weekly, 5 km, mass participant running events).
methodsThirty-six recreational runners (M = 31, F = 5; age 33.7 ± 10.7 y; BMI 23.1 ± 2.4 kg/m
resultsCaffeine gum improved 5 km parkrun performance by a mean of 17.28 s (95% CI 4.19, 30.37; P = 0.01). Adjustment for environmental conditions using data from the non-intervention trials attenuated the statistical significance (P = 0.04). Caffeine gum also decreased RPE by 1.21 (95% CI 0.30, 2.13; P = 0·01) units relative to placebo.
conclusionsA 300 mg dose of caffeine supplied in chewing gum improved the performance of recreational runners completing 5 km parkruns by an average of 17 s.
trial registrationThe study was registered at ClinicalTrials.gov: NCT02473575 before recruitment commenced.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.