Effects of acute caffeine intake on muscular power during resistance exercise: a systematic review and meta-analysis.

ABSTRACT:

Background

This study examined the effects of caffeine on movement velocity and power output during resistance exercises and explored moderating factors influencing these effects.

Methods

A systematic search of five databases was conducted through June 2025. A random-effects model was used to assess the effect of caffeine on muscular power-related variables, such as bar velocity and power output, during resistance exercises with a fixed number of repetitions. Subgroup analyses were performed based on sex, caffeine dose, habitual caffeine consumption, muscle group, and load.

Results

Twelve studies comprising 230 participants were included. Caffeine significantly improved mean velocity (SMD = 0.42, 95% CI: 0.19-0.65, p < 0.05, I² = 85%) and mean

SUBMITTER: Xiao Y 

PROVIDER: S-EPMC12537405 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature