The Claim
Whey protein hydrolysate and intact whey protein produce equivalent increases in muscle protein fractional synthetic rate over a 3-hour period in healthy young men, despite differences in leucine kinetics and phenylalanine utilization timing.
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.
In healthy young men, whey protein hydrolysate and intact whey protein result in the same increase in the rate of muscle protein synthesis over three hours, even though the timing of amino acid processing differs between the two forms.
See the scientific wording
Whey protein hydrolysate and intact whey protein produce equivalent increases in muscle protein fractional synthetic rate over a 3-hour period in healthy young men, despite differences in leucine kinetics and phenylalanine utilization timing.
When whey protein is consumed, the broken-down version releases leucine into muscle cells more slowly and for longer than the intact version, but both versions eventually deliver enough leucine to keep a key growth switch turned on. This switch, called mTORC1, stays active long enough in both cases to trigger the same amount of new muscle protein being made within three hours.
What the research says
1 studyBoth kinds of whey protein — the broken-down and the regular kind — made muscles build new protein at the same rate over three hours, even though the broken-down one kept amino acids flowing longer. So, they work just as well for building muscle in the short term.
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.