Whey Protein Hydrolysate vs Regular Whey: Muscle Growth Showdown
Effects of whey protein hydrolysate ingestion on post-exercise muscle protein synthesis compared with intact whey protein in rats
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists tested two types of whey protein in rats after exercise to see which helps muscles grow better
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
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Max 58Cross-Sectional Studies
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Evidence Score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists tested two types of whey protein in rats after exercise to see which helps muscles grow better
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 513 / 90
Evidence Score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Publication
Authors
Nakayama K, Tagawa R, Saito Y, Sanbongi C
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Claims (8)
Whey protein maximizes muscle protein synthesis, steak provides higher nutrient density, and collagen specifically supports connective tissue repair and recovery.
When rats exercised and then ate a small amount of whey protein hydrolysate, their muscles built protein faster than when they ate regular whey protein at the same dose.
A small dose of whey protein hydrolysate made a key muscle-building signal stronger in rats than regular whey protein or no protein.
For rats, the best time for muscle protein building after eating regular whey protein is about an hour later.
When rats ate a larger dose of regular whey protein, their blood had more leucine than when they ate the same amount of hydrolyzed whey protein an hour later.