The Claim
A blend of soy and pea protein provides an essential amino acid profile, including leucine, sufficient to stimulate muscle protein synthesis and support hypertrophy during resistance training in healthy young men, with effects equivalent to those of whey protein.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
A mixture of soy and pea protein stimulates muscle growth during resistance training in healthy young men to the same extent as whey protein.
See the scientific wording
The combination of soy and pea protein as a blend provides a sufficient essential amino acid profile, including leucine, to stimulate muscle protein synthesis and support hypertrophy during resistance training, matching the effects of whey protein in healthy young men, suggesting that protein quality can be optimized through blending rather than relying on single-source animal proteins.
When soy and pea protein are consumed together, they release enough leucine into the blood to fully turn on the mTORC1 switch in muscle cells. This switch tells the muscle to build more protein, and when combined with weight training, the muscle gets bigger and stronger over time, just like it does with whey protein.
What the research says
1 studyThis study found that mixing soy and pea protein helped people build muscle and get stronger just as well as whey protein from milk, during 12 weeks of weight training. So yes, you don’t need animal protein to build muscle — a good plant blend works just as well.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.