Center for Health Promotion, International Life Sciences Institute, Tokyo 102-0083, Japan.
Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, Kagoshima 890-8544, Japan.
Nutrients. 2021 Dec 24;14(1):72. doi: 10.3390/nu14010072.
Nutritional factors, including low protein intake and poor dietary variety, affect age-associated impairment in physical performance resulting in physical frailty. This cross-sectional study investigated the association between intake frequency of major high protein foods and both physical performance and higher-level functional capacity using the food frequency score (FFS) and high protein food frequency score (PFFS) among community-dwelling older adults. The data of 1185 older adults categorized into quartiles based on FFS and PFFS were analyzed. After adjusting for covariates, FFS and PFFS were significantly associated with physical performance [FFS, usual gait speed ( for trend = 0.007); PFFS, usual gait speed ( for trend < 0.001), maximum gait speed ( for trend = 0.002), timed up and go ( for trend = 0.025)], and higher-level functional capacity [FFS ( for trend < 0.001); PFFS ( for trend < 0.001)]. After excluding PFFS data, the participants' scores were associated with only higher-level functional capacity. Multi-regression analysis with higher-level functional capacity as the covariate showed that FFS and PFFS were significantly correlated with physical performance. Hence, improving food intake frequency, particularly that of high protein foods, and dietary variety may help maintain higher-level functional capacity and physical performance in community-dwelling older adults.
营养因素,包括低蛋白摄入和饮食种类差,会影响与年龄相关的身体机能下降,导致身体虚弱。本横断面研究调查了社区居住的老年人中,主要高蛋白食物的摄入频率与身体表现和更高水平的功能能力之间的关系,使用食物频率评分(FFS)和高蛋白食物频率评分(PFFS)。对基于 FFS 和 PFFS 分为四分位数的 1185 名老年人的数据进行了分析。在调整了协变量后,FFS 和 PFFS 与身体表现[FFS,通常的步行速度(趋势=0.007);PFFS,通常的步行速度(趋势<0.001),最大步行速度(趋势=0.002),计时起立行走(趋势=0.025)]和更高水平的功能能力[FFS(趋势<0.001);PFFS(趋势<0.001)]显著相关。排除 PFFS 数据后,参与者的分数仅与更高水平的功能能力相关。以更高水平的功能能力为协变量的多元回归分析表明,FFS 和 PFFS 与身体表现显著相关。因此,改善食物摄入频率,特别是高蛋白食物的摄入频率和饮食多样性,可能有助于维持社区居住的老年人的更高水平的功能能力和身体表现。