From the Department of Physical Education, Sport and Human Movement, Faculty of Teacher Training and Education, University Autonomous of Madrid, Madrid, Spain (DM-G); Geriatric Unit, Local Health Tuscany Center, Florence, Italy (SB, VD-P, ET); University of Maryland School of Medicine, Baltimore, Maryland (JMG); and National Institute on Aging, Baltimore, Maryland (LF).
Am J Phys Med Rehabil. 2018 Mar;97(3):212-215. doi: 10.1097/PHM.0000000000000841.
We examined the associations of maintaining or increasing physical activity (PA) for a 3-yr follow-up with subsequent incident inability to complete the 400-m walk test (i.e., mobility disability) for 6 yrs of follow-up in older adults. This study included 421 participants 65 yrs and older. The 400-m walk test was assessed at baseline and at 3-, 6-, and 9-yr follow-up. Physical activity was self-reported through a 6-point rating scale at baseline and 3-yr follow-up. Three-year cumulative PA (i.e., average at baseline and at 3-yr follow-up) and its changes (i.e., from baseline to 3-yr follow-up) were linked to subsequent incidence of mobility disability for 6 yrs of follow-up (i.e., from 3- to 9-yr follow-up), after adjustment for potential covariates. After the 3-yr period, incidence of mobility disability for the subsequent 6 yrs of follow-up occurred in 129 participants. The odds ratio (95% confidence interval) of incident mobility disability associated with 1-category increase in cumulative PA was 0.63 (0.41-0.97, P = 0.036). The odds ratio (95% confidence interval) of incident mobility disability associated with 1-category increase in changes in PA was 0.56 (0.38-0.84, P = 0.005). Hence, maintaining or increasing PA levels is associated with a reduced risk of mobility disability among older adults.
我们研究了在 3 年随访期间保持或增加体力活动（PA）与随后 6 年随访期间无法完成 400 米步行测试（即移动障碍）的相关性。这项研究包括 421 名 65 岁及以上的参与者。400 米步行测试在基线和 3、6 和 9 年随访时进行评估。体力活动通过基线和 3 年随访时的 6 分制评分量表进行自我报告。3 年累计 PA（即基线和 3 年随访时的平均值）及其变化（即从基线到 3 年随访时的变化）与随后 6 年随访期间移动障碍的发生率（即从 3 年到 9 年随访时）相关，调整了潜在的协变量后。在 3 年期间，129 名参与者随后 6 年的随访期间发生了移动障碍事件。与累计 PA 增加 1 个等级相关的移动障碍事件的比值比（95%置信区间）为 0.63（0.41-0.97，P=0.036）。与 PA 变化增加 1 个等级相关的移动障碍事件的比值比（95%置信区间）为 0.56（0.38-0.84，P=0.005）。因此，保持或增加 PA 水平与老年人移动障碍风险降低相关。
