Low Dietary Variety Is Associated with Incident Frailty in Older Adults during the Coronavirus Disease 2019 Pandemic: A Prospective Cohort Study in Japan

作者：Miyuki Yokoro, Naoto Otaki, Megumu Yano, Tomomi Imamura, Norikazu Tanino, Keisuke Fukuo · 发表于：Nutrients · 年份：2023 · DOI：10.3390/nu15051145 · 被引用次数：18 · 研究领域：Frailty in Older Adults、Nutrition and Health in Aging、Nutritional Studies and Diet

Background: Stagnation of social activity due to the COVID-19 pandemic probably reduces motivation to maintain a healthy diet. It is important to report on the dietary changes observed in older adults during a period of restriction on outings and to clarify the relationship between dietary variety and frailty. This one-year follow-up study examined the association between frailty and dietary variety during the COVID-19 pandemic. Methods: Baseline and follow-up surveys were conducted in August 2020 and August 2021, respectively. The follow-up survey was distributed by mail to 1635 community-dwelling older adults aged ≥65 years. Of the 1235 respondents, 1008 respondents who were non-frail at baseline are included in this study. Dietary variety was examined using a dietary variety score developed for older adults. Frailty was assessed using a five-item frailty screening tool. The outcome was frailty incidence. Results: In our sample, 108 subjects developed frailty. A linear regression analysis revealed a significant association between dietary variety score and frailty score (β, −0.032; 95% CI, −0.064 to −0.001; p = 0.046). This association was also significant in Model 1, adjusted for sex and age, (β, −0.051; 95% CI, −0.083 to −0.019; p = 0.002) and in a multivariate analysis that added adjustments for living alone, smoking, alcohol use, BMI, and existing conditions to Model 1 (β, −0.045; 95% CI, −0.078 to −0.012; p = 0.015). Conclusions: A low dietary variety score was associa...