Sports Medicine

, Volume 47, Issue 8, pp 1589–1599 | Cite as

Polyphenols and Performance: A Systematic Review and Meta-Analysis

  • Vaughan Somerville
  • Cameron Bringans
  • Andrea Braakhuis
Systematic Review

Abstract

Background

Polyphenols exert physiological effects that may impact athletic performance. Polyphenols are antioxidants that have been noted to hinder training adaptations, yet conversely they stimulate stress-related cell signalling pathways that trigger mitochondrial biogenesis and influence vascular function.

Objective

To determine the overall effect of polyphenols on human athletic performance.

Methods

A search strategy was completed using MEDLINE, EMBASE, CINAHL, AMED and SPORTDiscus in April 2016. The studies were screened and independently reviewed by two researchers against predetermined criteria for eligibility. As a result of this screening, 14 studies were included for meta-analysis. Of these, the studied populations were predominately-trained males with an average intervention dose of 688 ± 478 mg·day−1.

Results

The pooled results demonstrate polyphenol supplementation for at least 7 days increases performance by 1.90% (95% CI 0.40–3.39). Sub-analysis of seven studies using quercetin identified a performance increase of 2.82% (95% CI 2.05–3.58). There were no adverse effects reported in the studies in relation to the intervention.

Conclusion

Overall the pooled results show that polyphenols, and of note quercetin, are viable supplements to improve performance in healthy individuals.

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Copyright information

© Springer International Publishing Switzerland 2017

Authors and Affiliations

  1. 1.Department of Nutrition and Dietetics, Faculty of Medical and Health ScienceThe University of AucklandAucklandNew Zealand
  2. 2.Department of Surgery, Faculty of Medical and Health ScienceSchool of Medicine, The University of AucklandAucklandNew Zealand

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