Effects of Acute Caffeine Ingestion on Physical Performance and Skill Execution in Volleyball Players: A Systematic Review and Meta-Analysis.

Int J Exerc Sci · 2025 · PMC12510704 · PMID 41079003

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did not reach statistical significanceno p-value reported

In other hand, the meta-analysis did not reach statistical significance for the effect of caffeine on running- and power-based performance tests, but they always reflected a positive effect with g values ranging from 0.28 and 0.31 (p values < 0.07) for these variables.

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