Research
Cellular
Protein supplementation resulted in a significant positive effect on muscle mass with a weighted mean difference of 0.47 kg (95% CI, 0.18-0.75 kg; P < .001).
Practitioners should consider recommending protein supplementation to enhance muscle mass in healthy individuals.
StrongSupportsmedium confidence
Protein but not amino acid supplementation resulted in significant positive effects on muscle mass (weighted mean difference, 0.47 kg; 95% confidence interval, 0.18-0.75 kg; P < .001).
Why this rating
Based on data from 46 randomized controlled trials.
Source
Effects of Protein and Amino Acid Supplementation on Muscle Mass and Strength in a Healthy Population
Aliyu Tijani Jibril et al. · Nutrition Today · 2022
DOI 10.1097/nt.0000000000000543
Meta-analysis
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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