Cardiovascular Risk and Nutrition Research Group (CARIN), Epidemiology and Public Health Research Program, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain.
PhD Programme in Biomedicine, Department of Experimental and Health Sciences, Universidad Pompeu Fabra, Barcelona, Spain.
Eur J Public Health. 2018 Oct 1;28(5):944-950. doi: 10.1093/eurpub/cky030.
There is limited, and inconsistent, data on the prospective association between physical activity and surrogate markers of adiposity in older adults. We aim to determine the prospective association of leisure time physical activity (LTPA) with body mass index (BMI), waist circumference (WC) and the incidence of obesity.
This prospective analysis included 7144 individuals with a mean age of 67 ± 6.2 years, from the PREvención con DIeta MEDiterránea (PREDIMED) study. BMI and WC were measured and LTPA was recorded using the Minnesota Leisure Time Physical Activity Questionnaire. Exposure and outcome variables were calculated as cumulative average of repeated measurements.
Total LTPA was inversely associated (P < 0.001) with BMI and WC. The difference in BMI and WC between extreme quintiles of LTPA (Q1-Q5) was 2.1 kg/m2 (95% confidence interval (CI) 1.68; 2.49, P < 0.001) and 4.8 cm (CI 2.28; 7.25, P < 0.001), respectively. Low-intensity LTPA was inversely associated with BMI but not with WC, while moderate/vigorous LTPA showed an inverse relationship with BMI and WC. The hazard of general and abdominal obesity incidence decreased across quintiles of total and moderate/vigorous LTPA (P < 0.001 for both), whereas low-intensity LTPA was inversely associated with the incidence of general obesity (P < 0.001).
LTPA was inversely associated with BMI, WC and incidence of general and abdominal obesity. The finding that low-intensity LTPA was inversely related to BMI and the incidence of obesity is of particular importance because this level of physical activity could be a feasible option for many older adults.
关于体力活动与老年人肥胖替代标志物之间的前瞻性关联，现有数据有限且不一致。我们旨在确定休闲时间体力活动（LTPA）与体重指数（BMI）、腰围（WC）和肥胖发生率之间的前瞻性关联。
这项前瞻性分析包括来自 PREvención con DIeta MEDiterránea（PREDIMED）研究的 7144 名平均年龄为 67 ± 6.2 岁的个体。使用明尼苏达州休闲时间体力活动问卷测量 BMI 和 WC，并记录 LTPA。暴露和结局变量作为重复测量的累积平均值计算。
总 LTPA 与 BMI 和 WC 呈负相关（P < 0.001）。LTPA 五分位（Q1-Q5）极值之间 BMI 和 WC 的差异分别为 2.1 kg/m2（95%置信区间（CI）1.68；2.49，P < 0.001）和 4.8 cm（CI 2.28；7.25，P < 0.001）。低强度 LTPA 与 BMI 呈负相关，但与 WC 无关，而中等/剧烈强度 LTPA 与 BMI 和 WC 呈负相关。随着总 LTPA 和中等/剧烈 LTPA 五分位的增加，一般和腹部肥胖的发病风险降低（均 P < 0.001），而低强度 LTPA 与一般肥胖的发病呈负相关（P < 0.001）。
LTPA 与 BMI、WC 以及一般和腹部肥胖的发生率呈负相关。低强度 LTPA 与 BMI 和肥胖发生率呈负相关的发现尤为重要，因为这种水平的体力活动对许多老年人来说可能是可行的选择。
