Meta-Analysis on Caffeine and High-Intensity Interval Exercise Performance

Twenty studies involving 320 participants, including 57 females, were analyzed in this systematic review. The meta-analysis found caffeine ingestion significantly improved high-intensity interval exercise performance with an effect size of Hedge's g = 0.28. The work was authored by Yixiang Peng and last updated in May 2026.

Use Cases

• Evaluating the effect of caffeine on exercise performance based on the pooled meta-analysis results
• Investigating moderators like rest/work ratio, caffeine dose, and form based on subgroup analyses
• Comparing ergogenic effects across sexes and training statuses based on reported subgroup results
• Analyzing the relationship between caffeine intake and physiological markers like blood lactate and glucose

Strengths

• The analysis is based on a systematic review of 20 studies, providing a structured evidence base
• Results include specific effect sizes (Hedge's g) and confidence intervals for performance and physiological markers
• Subgroup analyses were performed across multiple potential moderators including sex, training status, and caffeine dose

Limitations

• The dataset is a 1.6 MB DOCX file; the underlying study-level data is not provided in a structured, machine-readable format
• Column-level documentation is absent; field semantics must be inferred from the document text
• The row count for any underlying data tables is unknown, which may limit suitability assessment

Provenance

Source

figshare

Collection Method

Systematic review and meta-analysis of studies from several databases.

Freshness

Last updated 2026-05-21 04:37:13