Does Grape Polyphenols Exercise Recovery Randomized Trial work?

Updated October 2026

Quick Answer

Grape Polyphenols Exercise Recovery Randomized Trial has evidence relevant to strength of evidence and what the studies can or cannot prove, but conclusions should stay close to the cited sources. One representative finding is: Conclusion This study will evaluate whether consuming AGC improves endurance exercise performance, recovery and psychomotor speed across an endurance training programme, and evaluate the mechanisms responsible for any improvement.

Key Takeaways

  • 01Conclusion This study will evaluate whether consuming AGC improves endurance exercise performance, recovery and psychomotor speed across an endurance training programme, and evaluate the mechanisms responsible for any improvement. [d'Unienville NMA (2019)]
  • 02Background Foods rich in nutrients, such as nitrate, nitrite, L-arginine and polyphenols, can promote the synthesis of nitric oxide (NO), which may induce ergogenic effects on endurance exercise performance. [d'Unienville NMA (2019)]
  • 03Thus, consuming foods rich in these components, such as almonds, dried grapes and dried cranberries (AGC), may improve athletic performance. [d'Unienville NMA (2019)]
  • 04In comparison with the placebo, the mean duration of the maximal endurance test was significantly increased with polyphenols (+9.7% ± 6.0%, p p < 0.05). [Deley G (2017)]
The current Migaku evidence database contains 2 reusable source documents for Grape Polyphenols Exercise Recovery Randomized Trial. This answer focuses on strength of evidence and what the studies can or cannot prove. - Conclusion This study will evaluate whether consuming AGC improves endurance exercise performance, recovery and psychomotor speed across an endurance training programme, and evaluate the mechanisms responsible for any improvement. [d'Unienville NMA (2019); evidence level 2] - Background Foods rich in nutrients, such as nitrate, nitrite, L-arginine and polyphenols, can promote the synthesis of nitric oxide (NO), which may induce ergogenic effects on endurance exercise performance. [d'Unienville NMA (2019); evidence level 2] - Thus, consuming foods rich in these components, such as almonds, dried grapes and dried cranberries (AGC), may improve athletic performance. [d'Unienville NMA (2019); evidence level 2] - In comparison with the placebo, the mean duration of the maximal endurance test was significantly increased with polyphenols (+9.7% ± 6.0%, p p < 0.05). [Deley G (2017); evidence level 2] - Polyphenols are thought to be an interesting ergogenic aid for exercise and recovery. [Deley G (2017); evidence level 2] 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. Effects of almond, dried grape and dried cranberry consumption on endurance exercise performance, recovery and psychomotor speed: protocol of a randomised controlled trial.
  2. An Acute Dose of Specific Grape and Apple Polyphenols Improves Endurance Performance: A Randomized, Crossover, Double-Blind versus Placebo Controlled Study.