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饮食中的蛋白质和氨基酸摄入量用于减轻人类的肉症
Wenliang He1, Erin D Connolly1, H Russell Cross1
1Department of Animal Science, Texas A&M University, College Station, TX, USA.
老龄化成年人经历肌肉损失 (sarcopenia). 特定的氨基酸 (AAs) 和它们的代谢物可以帮助维持肌肉质量和力量,特别是当与足够的蛋白质摄入量相结合时.
科学领域:
- 老年学是指老年学的学科.
- 营养科学 营养科学
- 肌肉生理学 肌肉生理学
背景情况:
- 50岁以上的成年人每年体验肌肉质量 (0.5-1%) 和力量 (1.5-5%) 的下降.
- 与年龄相关的肌肉损失萨尔科佩尼亚,影响全球60岁以上的10-16%的个人.
- 由于饮食和代谢因素,关键氨基酸 (AAs) 的血度在老年人中下降.
研究的目的:
- 研究氨基酸及其代谢物在减轻与年龄相关的肌肉衰退中的作用.
- 探索AAs在衰老中影响肌肉健康的生理机制.
- 提供饮食建议,以维持老年人的肌肉质量和功能.
主要方法:
- 审查现有的关于氨基酸代谢和肌肉生理学在衰老的文献.
- 分析研究,检查急性和长期AA管理的影响.
- 检查AA代谢物对肌肉功能和质量的影响.
主要成果:
- 服用特定的AAA (例如,BCAA,氨酸,谷氨酸) 可以改善骨肌肉的血液流动,并启动肌肉蛋白质合成.
- 类代谢物如氨酸,β-氨酸,肉氨酸和肌酸在老年人肌肉健康方面具有生理上的好处.
- 足够的蛋白质和AA代谢物摄入量支持肌肉质量和功能,有助于缓解肉症.
结论:
- 饮食中的蛋白质和特定的氨基酸,以及它们的代谢物,对于对抗与年龄相关的肌肉损失至关重要.
- 优化饮食摄入量通过动物和植物来源食品的平衡组合是保持适当的氨基酸平衡的必要条件.
- 专注于氨基酸营养的干预措施可以成为有效的策略来管理老年人肉症.
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