Amount Rather than Animal vs Plant Protein Intake Is Associated with Skeletal Muscle Mass in Community-Dwelling Middle-Aged and Older Chinese Adults: Results from the Guangzhou Nutrition and Health Study
Amount Rather than Animal vs Plant Protein Intake Is Associated with Skeletal Muscle Mass in Community-Dwelling Middle-Aged and Older Chinese Adults: Results from the Guangzhou Nutrition and Health Study
复制标题
中国社区中老年人的骨骼肌质量与摄入量而非动物蛋白和植物蛋白摄入量相关：广州营养与健康研究的结果
DOI：
10.1016/j.jand.2019.03.010
复制
发表时间：
2019-09-01
影响因子：
4.8
通讯作者：
Zhu, Hui-lian
中科院分区：
文献类型：
--
作者：
Li, Cui-yu;Fang, Ai-ping;Zhu, Hui-lian
研究目的本研究的目的是探讨在40~80岁的中国成年人中，动物和植物蛋白质含量与骨骼肌量之间的关系。设计前瞻性横断面分析，研究对象为2011-2013年广州市营养与健康研究中年龄在40~80岁之间的1044名男性和2169名女性，采用双能X线骨密度仪进行身体成分测量。主要观察指标骨骼肌指数(SMI)定义为附件骨骼肌重除以体重。统计分析采用协方差分析来估计总蛋白、动物蛋白和植物蛋白的相对摄入量以及动植物蛋白的比例。应用Logistic回归模型分析蛋白质摄入量的五分位数与LMM之间的关系。结果总蛋白、动物蛋白和植物蛋白的相对膳食摄入量的五分位数的SMI显著增加(均P
Background Current literature does not indicate if the amount and animal vs plant protein are equally important in the prevention of muscle loss in middle-aged and older Chinese adults.Objective The aim of the study was to examine the associations between amount or animal vs plant protein and skeletal muscle mass in Chinese adults aged 40 to 80 years.Design A cross-sectional analysis of a prospective, community-based cohort was performed.Participants/setting Participants included 1,044 men and 2,169 women aged 40 to 80 years from the Guangzhou Nutrition and Health Study 2011-2013 with body composition measurements by dual-energy x-ray absorptiometry.Main outcome measure The skeletal muscle index (SMI) was defined as appendicular skeletal muscle mass divided by body weight. Participants in the lowest quartile of the sex-specific SMI were considered to have low muscle mass (LMM).Statistical analysis Analyses of covariance were performed to estimate the SMI across quintiles of relative dietary intake of total, animal, and plant protein and the ratio of animal-to-plant protein. Logistic regression models were applied to assess the associations between quintiles of protein intake and LMM.Results The SMI increased significantly across quintiles of relative dietary intake of total, animal, and plant protein (all P trends