Research

Mixed

While a protein-polyphenol beverage accelerates early functional adaptations and increases type II fiber hypertrophy, it does not further increase peak isometric torque, overall muscle function, or total quadriceps muscle volume compared to placebo in the later stages of resistance training (sessions 10-30).

Don't expect this specific supplement to make you bigger or stronger than standard protein in the long run. The early boost in function and fiber size is nice, but for overall muscle volume and peak strength after the first month, it offers no advantage over a placebo or standard protein. You can likely stop the specialized polyphenol supplements after the initial adaptation phase.

GoodRefutesHIGH confidence
Similarly, PPB did not further increase peak isometric torque, muscle function, or MyoPS measured posttraining. This suggests that although PPB increases MyoPS and early adaptation, it may not influence longer term adaptations to unilateral RET.
George F. Pavis et al. · American Journal of Physiology-Endocrinology and Metabolism · 2022

Why this rating

Same high-quality RCT design as N1.

Source

Daily protein-polyphenol ingestion increases daily myofibrillar protein synthesis rates and promotes early muscle functional gains during resistance training

George F. Pavis et al. · American Journal of Physiology-Endocrinology and Metabolism · 2022

DOI 10.1152/ajpendo.00328.2021

rct · n=29Cited 13×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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