Caffeine slightly raised maximal strength and jump power

Key finding

Caffeine slightly raised maximal strength and jump power

Context

Meta-analysis of 10 studies each on 1RM strength and jump height, caffeine versus placebo.

Caffeine raised maximal strength slightly
  • 0.2 (95% CI: 0.03–0.36) effect size: Maximal strength
  • 0.21 (95% CI: 0.02–0.39) effect size: Upper body
  • 0.15 (95% CI: -0.05–0.34) effect size: Lower body
  • 0.17 (95% CI: 0–0.34) effect size: Jump power

Limits

The effects are small, not significant for the lower body, and there are few data on women. The authors call for better control of blinding.

Sources

  • Effects of caffeine intake on muscle strength and power: a systematic review and meta-analysis. · Grgic · 2018 · Journal of the International Society of Sports Nutrition PubMed DOI Study note

Guides

Summaries by SetCtl, not medical advice.