Muscle Protein Synthesis (MPS). Definition, Meaning & FAQs

Definition

Muscle protein synthesis is the process by which the body assembles new muscle proteins. It's elevated for 24–48 hours after a hard training session and is triggered each meal by ~2.5–3g of leucine. Net muscle growth occurs when MPS exceeds muscle protein breakdown over time.

Real questions

How many protein feedings per day for MPS?

3–5 meals of 30–50g of complete protein each, spaced 3–5 hours apart, maximize 24-hour MPS.

Stack with

Protein IntakeHow much protein you eat per day, the most important macro for muscle.LeucineThe branched chain amino acid that triggers muscle protein synthesis.HypertrophyThe growth of muscle fiber size in response to resistance training.

Put it to work

Coach Foster builds your program around muscle protein synthesis (mps) and the rest of the fundamentals, shaped to your body and your week.

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