Muscle protein synthesis

Whey protein

Adequate high-quality protein supports muscle protein synthesis after training.

strong evidence

Direction: increase

Magnitude: unknown

Human evidence reviewed

Study context

Population: Resistance-trained adults

Studied dose: 20–40 g

Duration: Varies across reviewed studies

Last reviewed: 2026-09-16

Limitations & caveats

  • Total daily protein and training matter.

Sources

A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adultsMeta-analysis · Morton et al. · supportsRead ›NIH ODS: Dietary Supplements for Exercise and Athletic PerformanceExpert or government fact sheet · NIH Office of Dietary Supplements · supportsOpen ↗

Source type and claim strength are separate. A fact sheet summarizes underlying research; its link is not an individual clinical trial.