The Claim
Phenylalanine utilization for muscle protein synthesis remains elevated for 3 hours after ingestion of whey protein hydrolysate but returns to baseline by 1 hour after ingestion of intact whey protein in healthy young men.
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.
After consuming whey protein hydrolysate, phenylalanine is used for muscle protein synthesis for 3 hours; after consuming intact whey protein, this use stops by 1 hour in healthy young men.
See the scientific wording
Phenylalanine utilization for muscle protein synthesis remains elevated for 3 hours after ingestion of whey protein hydrolysate but returns to baseline by 1 hour after intact whey protein ingestion in healthy young men.
When whey protein is broken down into small pieces, the body absorbs it faster, causing more leucine to enter muscle cells and stay there longer. This keeps a key growth signal turned on, which keeps building muscle protein for up to three hours. Whole whey protein is digested slower, so leucine spikes briefly and then drops, turning off the signal after one hour.
What the research says
1 studyWhen people drank a broken-down version of whey protein, their muscles kept using amino acids to build protein for 3 hours. But when they drank regular whey protein, that effect stopped after just 1 hour.
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.