What does the evidence say about Quercetin Exercise Performance Randomized Trial?

Updated October 2026

Quick Answer

Quercetin Exercise Performance Randomized Trial has evidence relevant to benefits, uncertainty, and practical interpretation, but conclusions should stay close to the cited sources. One representative finding is: The overall percentage of studies reporting an improved exercise performance following flavonoid supplementation was 37%, the proportion being 25% when considering quercetin, 28% for flavanol-enriched extracts, and 54% for anthocyanins-enriched extracts.

Key Takeaways

  • 01The overall percentage of studies reporting an improved exercise performance following flavonoid supplementation was 37%, the proportion being 25% when considering quercetin, 28% for flavanol-enriched extracts, and 54% for anthocyanins-enriched extracts. [Ruiz-Iglesias P (2021)]
  • 02From the studies reporting an enhanced performance, only two, using anthocyanin supplements, focused on the immune system and found certain anti-inflammatory effects of these flavonoids. [Ruiz-Iglesias P (2021)]
  • 03Flavonoids are attracting increasing attention due to their antioxidant, cardioprotective, and immunomodulatory properties. [Ruiz-Iglesias P (2021)]
  • 04Nevertheless, little is known about their role in exercise performance in association with immune function. [Ruiz-Iglesias P (2021)]
The current Migaku evidence database contains 2 reusable source documents for Quercetin Exercise Performance Randomized Trial. This answer focuses on benefits, uncertainty, and practical interpretation. - The overall percentage of studies reporting an improved exercise performance following flavonoid supplementation was 37%, the proportion being 25% when considering quercetin, 28% for flavanol-enriched extracts, and 54% for anthocyanins-enriched extracts. [Ruiz-Iglesias P (2021); evidence level 1] - From the studies reporting an enhanced performance, only two, using anthocyanin supplements, focused on the immune system and found certain anti-inflammatory effects of these flavonoids. [Ruiz-Iglesias P (2021); evidence level 1] - Flavonoids are attracting increasing attention due to their antioxidant, cardioprotective, and immunomodulatory properties. [Ruiz-Iglesias P (2021); evidence level 1] - Nevertheless, little is known about their role in exercise performance in association with immune function. [Ruiz-Iglesias P (2021); evidence level 1] - Results A sustained reduction in relative limb blood supply (P Conclusion These data suggest that quercetin does not improve exercise performance, physical activity or limb blood supply in mice with sustained hind-limb ischaemia, and therefore is unlikely be an effective treatment for PAD. [Phie J (2021); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.

Sources

  1. Does Flavonoid Consumption Improve Exercise Performance? Is It Related to Changes in the Immune System and Inflammatory Biomarkers? A Systematic Review of Clinical Studies since 2005.
  2. Effects of quercetin on exercise performance, physical activity and blood supply in a novel model of sustained hind-limb ischaemia.