SynthesisJournal of the International Society of Sports Nutrition2026
Effects of acute Capsaicin analogue intake on athletic performance: a three-level meta-analysis.
Synthesis in Journal of the International Society of Sports Nutrition, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
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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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
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Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCapsaicin analogues have been proposed as potential ergogenic aids, but their acute effects on athletic performance remain inconsistent. This study aimed to evaluate the effects of acute capsaicin analogue intake on exercise performance using a three-level meta-analysis.
methodsPubMed, Web of Science, Scopus, SPORTDiscus, and the Cochrane Library were searched up to April 1, 2025. Randomized controlled trials examining acute oral capsaicin analogue intake in healthy adults were included. Outcomes were classified into strength, power, muscular endurance, and aerobic capacity. Hedges' g was calculated using a three-level random-effects model.
resultsTwenty-one randomized crossover trials with 67 effect sizes were included. Acute capsaicin analogue intake significantly improved overall athletic performance compared with placebo (g = 0.20, 95% CI [0.07, 0.33],
conclusionsAcute capsaicin analogue intake may produce small but significant improvements in athletic performance, particularly in power and muscular endurance. However, due to heterogeneity, publication bias, and very low certainty of evidence, these findings should be interpreted cautiously.
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