What nutrient timing strategy optimizes muscle protein synthesis after resistance exercise?

• A. 60–80 g of protein immediately before sleep.
• B. Only carbohydrates are needed post-exercise.
• C. Protein timing does not affect muscle protein synthesis.
• D. 20–40 g of high-quality protein within 1–2 hours post-exercise.

Answer: (D)

After resistance training, the muscles are most responsive to amino acids, so delivering protein soon after the workout maximizes muscle protein synthesis. A practical dose is about 20–40 g of high-quality protein, which provides enough essential amino acids—especially leucine—to strongly stimulate the production of new muscle proteins. This should be consumed within 1–2 hours post-exercise, a window when the anabolic response is heightened. High-quality proteins like whey are particularly effective because they are quickly digested and rich in essential amino acids.

Options that rely on a larger protein hit before sleep don’t address the post-workout window and won’t maximize the immediate MPS response. Relying on carbohydrates alone misses the essential amino acids needed to drive protein synthesis. And while total daily protein matters, evidence supports optimizing the post-exercise period with a moderate, high-quality protein dose within a couple of hours of training to enhance MPS.