The Study
Protein Ingestion before Sleep Increases Overnight Muscle Protein Synthesis Rates in Healthy Older Men: A Randomized Controlled Trial.
This study is like a carefully run experiment where men were randomly given different protein drinks before bed to see how their muscles used the protein overnight. It shows that 40 grams of protein before sleep helps build more muscle protein while sleeping — it's strong proof for this specific effect.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Older men drank different amounts of protein before sleep, and scientists checked how well their bodies used it overnight to build muscle.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 560 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, this means having protein before sleep helps the body repair and build muscle at night.
- 2Men who had 40 grams of protein before bed made more muscle protein overnight than those who had less or none.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
The Journal of nutrition
Year
2017
Authors
I. W. Kouw, A. Holwerda, J. Trommelen, I. Kramer, J. Bastiaanse, S. Halson, W. Wodzig, L. Verdijk, L. V. van Loon
Related Content
Claims (4)
If older guys around 72 drink a protein shake with 40 grams of casein before bed, it helps their muscles repair and grow overnight better than not having it.
If older guys eat protein before bed, their bodies can digest it overnight and use it to build muscle while they sleep.
If older guys eat 40 grams of protein before bed, their bodies use it better overnight to build muscle while they sleep.
Drinking a protein shake with casein before bed helps your muscles grow and get stronger while you sleep, especially if you're working out.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.