Meta-Analysis of Beta-Alanine Supplementation Effects on Repeated Sprint Ability

A systematic review and meta-analysis of 17 randomized controlled trials investigates the ergogenic effect of chronic β-alanine supplementation on repeated sprint ability. The study, authored by Weibao Liang and published in 2026, found no statistically significant improvements in Mean RSA Performance, Peak RSA Performance, or Fatigue Decrement.

Use Cases

• Analyze the Standardized Mean Differences (SMD, Hedges’ g) for Mean RSA Performance across 17 included RCTs to assess intervention efficacy.
• Examine subgroup and meta-regression results for moderators like total administered dose and exercise modality on Peak RSA Performance outcomes.
• Review the methodological quality assessments using the Cochrane RoB 2.0 tool and certainty of evidence via the GRADE framework from the included studies.

Strengths

• Analysis synthesizes data from 17 randomized controlled trials (RCTs).
• Employs a multilevel random-effects model to account for statistical dependency of multiple effect sizes.
• Systematic search was conducted across six major databases (PubMed, Web of Science, Scopus, Cochrane Library, Embase, SPORTDiscus).

Limitations

• The dataset is a 3.1 MB DOCX document, limiting direct computational analysis without text extraction.
• The underlying raw trial data is not included, only the aggregated meta-analysis results.
• The review's search was current up to January 2026, but the included primary studies may be older.

Provenance

Source

figshare, authored by Weibao Liang.

Collection Method

Systematic review and multilevel meta-analysis of randomized controlled trials.

Time Range

Search conducted up to January 2026; publication date 2026.

Freshness

Last updated March 26, 2026.

Geography

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