Schering Teresa, Schiffer Linda, McLeod Andrew, DeMott Andrew, Hughes Susan, Fitzgibbon Marian L, Tussing-Humphreys Lisa
Department of Medicine, Chicago IL, USA.
Department of Epidemiology, School of Public Health, University of Illinois at Chicago, Chicago, IL, USA.
Nutr Healthy Aging. 2021 Jan 20;6(1):61-71. doi: 10.3233/NHA-190081.
Strategies to reduce osteoarthritis (OA) symptoms and increase physical function in persons with lower extremity (LE) OA is a public health priority.
To examine associations between diet quality and measures of physical function among overweight and obese older adults with self-reported LE OA.
413 overweight and obese primarily African American adults ≥60 years old with LE OA were assessed. Diet quality was quantified using the Healthy Eating Index-2010 (HEI-2010) and Alternative Healthy Eating Index-2010 (AHEI-2010). The six-minute walk, 30-second chair-stands, and timed up-and-go tests were used to assess physical function. Unadjusted and multivariable linear regressions were performed to assess associations between the diet quality and measures of physical function.
The mean age of the subjects was 67.8 (SD 5.9) years and mean BMI was 34.8 (SD 5.5) kg/m. Adjusting for total calories, AHEI-2010 total score was associated with superior performance on the six-minute walk test. However, the association was attenuated when also controlling for age, gender, BMI, waist circumference, self-reported pain, and physical activity. HEI-2010 was not associated with the physical function measures.
AHEI-2010 total score was positively associated with walking speed among older overweight and obese primarily AA older adults with LE OA. However, the association weakened when adjusting for subject covariates. The relationship between diet quality and physical function among health disparate populations should be further investigated in larger cohorts and using rigorous experimental study design.
减轻下肢骨关节炎（OA）患者的症状并提高其身体功能的策略是一项公共卫生重点工作。
研究自我报告患有下肢OA的超重和肥胖老年人的饮食质量与身体功能指标之间的关联。
对413名年龄≥60岁、患有下肢OA的超重和肥胖非裔美国成年人进行了评估。使用2010年健康饮食指数（HEI - 2010）和2010年替代健康饮食指数（AHEI - 2010）对饮食质量进行量化。采用6分钟步行试验、30秒椅子站立试验和定时起立行走试验来评估身体功能。进行未调整和多变量线性回归以评估饮食质量与身体功能指标之间的关联。
受试者的平均年龄为67.8（标准差5.9）岁，平均体重指数为34.8（标准差5.5）kg/m²。在调整总热量后，AHEI - 2010总分与6分钟步行试验中的较好表现相关。然而，在同时控制年龄、性别、体重指数、腰围、自我报告的疼痛和身体活动时，这种关联减弱。HEI - 2010与身体功能指标无关。
在患有下肢OA的超重和肥胖非裔美国老年人中，AHEI - 2010总分与步行速度呈正相关。然而，在调整受试者协变量后，这种关联减弱。应在更大的队列中并采用严格的实验研究设计，进一步研究健康状况不同人群中饮食质量与身体功能之间的关系。
