老年人增加蛋白质摄入量的影响:一项为期12周的双盲随机对照试验
Janine Wirth1,2, Annalisa Segat3, Katy Horner4
1UCD Institute of Food and Health, UCD School of Agriculture and Food Science, UCD, Belfield, Dublin 4, Ireland.
Age and ageing
|May 15, 2024
概括
增加老年人每日蛋白质摄入量,无论是植物性还是乳制品,与低蛋白饮食相比,在12周内没有显著改善肌肉功能,代谢健康或生活质量.
科学领域:
- 老年学是一门学科.
- 营养科学 营养科学
- 肌肉生理学 肌肉生理学
背景情况:
- 越来越多的人对植物性蛋白质越来越感兴趣,因为它对健康有益.
- 关于植物蛋白对老年人肌肉功能影响的数据有限.
- 蛋白质摄入量对于维持老龄人口健康至关重要.
研究的目的:
- 研究高植物蛋白与高乳制品蛋白摄入量对老年人肌肉功能的影响.
- 评估不同蛋白质来源对代谢健康,睡眠质量和生活质量的影响.
- 为了比较高蛋白饮食 (植物或乳制品) 与低蛋白饮食的结果.
主要方法:
- 这是一项为期12周的双盲随机对照试验,涉及50岁及以上的171名健康成年人.
- 三个干预组:高植物蛋白,高乳制品蛋白和低蛋白,每组每天接受20g蛋白质.
- 使用线性混合模型分析手握强度,腿强度,身体组成,代谢标志物,睡眠和生活质量.
主要成果:
- 在12周期间,手握强度在统计学上显著增加 (P=0.038).
- 在植物蛋白,乳制品蛋白和低蛋白组之间没有观察到手握强度改善的显著差异.
- 在腿部强度,身体组成,代谢健康,睡眠质量或生活质量方面,两组之间没有发现显著差异.
结论:
- 与低蛋白饮食相比,12周每天补充20g的植物或乳制品来源的蛋白质,并没有显著改善老年人的肌肉功能或整体健康结果.
- 这些发现表明,仅仅在这个范围内增加蛋白质摄入量可能不足以提高这个人口群体的肌肉功能或相关健康参数.
- 可能需要进一步的研究来探索最佳的蛋白质策略,考虑数量和来源以外的因素.
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