The Claim

Postexercise ingestion of a soy-dairy protein blend or whey protein, when matched for leucine content, increases myofibrillar protein synthesis to a similar extent in young adult men, with no statistically significant difference between the two protein sources.

Source: Soy-dairy protein blend and whey protein ingestion after resistance exercise increases amino acid transport and transporter expression in human skeletal muscle.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
68score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Quantitative
1 study reviewed
In plain English

After exercise, young adult men who consume either a soy-dairy protein blend or whey protein with equal leucine levels experience the same increase in muscle protein synthesis.

See the scientific wording

Postexercise ingestion of either a soy-dairy protein blend or whey protein increases myofibrillar protein synthesis to a similar extent in young adult men, with no statistically significant difference between the two protein sources when matched for leucine content.

Why this might work

After exercise, eating protein increases amino acids in the blood, which signals muscle cells to make more transporters that pull amino acids inside. More amino acids inside the muscle activate a key growth pathway that turns on the building of new muscle fibers.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Soy-dairy protein blend and whey protein ingestion after resistance exercise increases amino acid transport and transporter expression in human skeletal muscle.

    After a workout, both soy-dairy protein and whey protein helped build muscle at the same rate, as long as they had the same amount of leucine. The study proved they work just as well for muscle growth.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.