If older guys work out in the evening and then eat protein before bed, their muscles use that protein better overnight to repair and grow.
Evidence from Studies
Supporting (2)
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Physical Activity Performed in the Evening Increases the Overnight Muscle Protein Synthetic Response to Presleep Protein Ingestion in Older Men.
Physical Activity Performed in the Evening Increases the Overnight Muscle Protein Synthetic Response to Presleep Protein Ingestion in Older Men.
Contradicting (2)
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Exercise Plus Presleep Protein Ingestion Increases Overnight Muscle Connective Tissue Protein Synthesis Rates in Healthy Older Men.
Presleep dietary protein-derived amino acids are incorporated in myofibrillar protein during postexercise overnight recovery.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.