Quality of plant-based diets and frailty incidence: a prospective analysis of UK biobank participants

医学 相对风险 置信区间 前瞻性队列研究 混淆 低风险 人口学 入射(几何) 老年学 队列研究 队列 环境卫生 比例危险模型 内科学 社会学 物理 光学
作者
Javier Maroto-Rodríguez,Rosario Ortolá,Esther García‐Esquinas,Stefanos N. Kales,Fernando Rodríguez‐Artalejo,Mercedes Sotos‐Prieto
出处
期刊:Age and Ageing [Oxford University Press]
卷期号:53 (5) 被引量:3
标识
DOI:10.1093/ageing/afae092
摘要

Abstract Background Substantial evidence supports the inverse association between adherence to healthy dietary patterns and frailty risk. However, the role of plant-based diets, particularly their quality, is poorly known. Objective To examine the association of two plant-based diets with incidence of physical frailty in middle-aged and older adults. Design Prospective cohort. Setting United Kingdom Subjects 24,996 individuals aged 40–70 years, followed from 2009–12 to 2019–22. Methods Based on at least two 24-h diet assessments, we built two diet indices: (i) the healthful Plant-based Diet Index (hPDI) and (ii) the unhealthful Plant-based Diet Index (uPDI). Incident frailty was defined as developing ≥3 out of 5 of the Fried criteria. We used Cox models to estimate relative risks (RR), and their 95% confidence interval (CI), of incident frailty adjusted for the main potential confounders. Results After a median follow-up of 6.72 years, 428 cases of frailty were ascertained. The RR (95% CI) of frailty was 0.62 (0.48–0.80) for the highest versus lowest tertile of the hPDI and 1.61 (1.26–2.05) for the uPDI. The consumption of healthy plant foods was associated with lower frailty risk (RR per serving 0.93 (0.90–0.96)). The hPDI was directly, and the uPDI inversely, associated with higher risk of low physical activity, slow walking speed and weak hand grip, and the uPDI with higher risk of exhaustion. Conclusions In British middle-age and older adults, greater adherence to the hPDI was associated with lower risk of frailty, whereas greater adherence to the uPDI was associated with higher risk.
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