The Claim

Ingestion of a soy-dairy protein blend or whey protein after resistance exercise similarly increases mRNA expression of SLC7A5, SLC3A2, SLC38A2, SLC36A1, and SLC7A1 in human skeletal muscle.

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.

How it works
1 study reviewed
In plain English

After resistance exercise, consuming either a soy-dairy protein blend or whey protein results in the same increase in the activity of five specific genes involved in amino acid transport in human muscle cells.

See the scientific wording

Ingestion of either a soy-dairy protein blend or whey protein after resistance exercise similarly increases mRNA expression of five key amino acid transporters (SLC7A5, SLC3A2, SLC38A2, SLC36A1, SLC7A1) in human skeletal muscle, indicating that both protein sources activate the molecular machinery for amino acid uptake to a comparable extent.

Why this might work

After exercise, when protein is eaten, amino acids enter the bloodstream and signal muscle cells to turn on genes that make proteins responsible for pulling more amino acids inside. This happens with both soy-dairy and whey protein, so both types of protein make the muscle ready to absorb amino acids just as much, even though one keeps amino acids in the blood longer.

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 working out, both soy-dairy protein and whey protein turned on the same genes in your muscles that help bring in amino acids — they worked just as well for this part, even though the soy-dairy blend kept amino acids in your muscles a little longer.

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.