Prizer Lindsay P, Gay Jennifer L, Gerst-Emerson Kerstin, Froehlich-Grobe Katherine
Am J Health Promot. 2016 Jan-Feb;30(3):e101-9. doi: 10.4278/ajhp.140225-QUAN-85. Epub 2015 May 14.
There's a lack of evidence on the association between light-intensity physical activity and disability. This study examines the relationships in activity by self-reported physical function in five domains (i.e., activities of daily living [ADL], instrumental ADL, leisure activities, lower extremity, and general activities), and whether this association varies by age.
Cross-sectional.
Data from National Health and Nutrition Examination Survey 2003-2004 and 2005-2006 waves.
Participants included 5700 men and women ages 20 to 85 years.
Difficulty with various activities was measured with the Physical Functioning Questionnaire, accelerometer-measured physical activity, demographics, and self-rated health.
Ordinary least squares regression models were run to examine the relationship between physical function in each domain, light-intensity activity, and the moderating effect of age. Analyses controlled for body mass index, moderate-to-vigorous-intensity activity, self-reported health, accelerometer wear time, and gender.
Little variation was seen in light-intensity physical activity among younger adults regardless of disability status. Older adults reporting difficulty with activities engaged in significantly less light-intensity physical activity compared to those with no disability (271.8 vs. 316.5 minutes). Age significantly moderated the association between light-intensity physical activity and leisure activities (p = .048), and lower extremity mobility (p = .039). Age did not moderate other domains of disability.
Younger age may be protective regarding the influence of disability on light-intensity activity. In addition, disability may be more debilitating for some older individuals. Interventions to increase light-intensity activity should aim to address disability at all ages, with increased attention for older adults.
关于低强度体力活动与残疾之间的关联，目前证据不足。本研究通过自我报告的五个领域（即日常生活活动[ADL]、工具性ADL、休闲活动、下肢活动和一般活动）的身体功能来考察活动之间的关系，以及这种关联是否因年龄而异。
横断面研究。
来自2003 - 2004年和2005 - 2006年国家健康与营养检查调查的数据。
参与者包括5700名年龄在20至85岁之间的男性和女性。
使用身体功能问卷、加速度计测量的体力活动、人口统计学特征和自我评估健康状况来测量各种活动的困难程度。
采用普通最小二乘法回归模型来考察每个领域的身体功能、低强度活动以及年龄的调节作用之间的关系。分析中控制了体重指数、中等到高强度活动、自我报告的健康状况、加速度计佩戴时间和性别。
无论残疾状况如何，年轻人的低强度体力活动差异不大。与无残疾者相比，报告活动有困难的老年人进行的低强度体力活动明显较少（271.8分钟对316.5分钟）。年龄显著调节了低强度体力活动与休闲活动之间的关联（p = 0.048）以及与下肢活动能力之间的关联（p = 0.039）。年龄并未调节其他残疾领域。
较年轻的年龄可能对残疾对低强度活动影响具有保护作用。此外，残疾对一些老年人可能更具衰弱性。增加低强度活动的干预措施应旨在解决所有年龄段的残疾问题，尤其要更多关注老年人。
