胶原蛋白有助于肌肉增长吗？胶原蛋白与乳清蛋白对比

📝 事实核查: This is accurate. ✅ The quality of a protein is often measured by the Protein Digestibility-Corrected Amino Acid Score (PDCAAS) or the Digestible Indispensable Amino Acid Score (DIAAS). Both systems rate collagen as zero. This is because it's an 'incomplete' protein, meaning it lacks one or more of the nine essential amino acids our bodies can't produce. Specifically, collagen has no tryptophan and is low in other key amino acids needed for muscle repair and growth.

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