Validity of questionnaire-based assessment of sedentary behaviour and physical activity in a population-based cohort of older men; comparisons with objectively measured physical activity data
Validity of questionnaire-based assessment of sedentary behaviour and physical activity in a population-based cohort of older men; comparisons with objectively measured physical activity data
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DOI：
10.1186/s12966-016-0338-1
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发表时间：
2016-02-04
影响因子：
8.7
通讯作者：
Whincup, Peter H.
中科院分区：
文献类型：
--
作者：
Jefferis, Barbara J.;Sartini, Claudio;Whincup, Peter H.
背景：老年人是最不活跃的年龄组，自我报告的活动可能会因与年龄相关的结构化活动减少以及错误分类或回忆偏差而变得复杂。我们调查了有关久坐行为 (SB)（包括广泛使用的代理电视 (TV) 观看）和体力活动 (PA) 的简单问卷调查的有效性，并与客观测量进行比较。方法：来自英国人口队列的 71-93 岁社区居民男性在右臀部佩戴 GT3X 加速度计 7 天，并自行完成一份问卷，其中包括有关 SB（电视、阅读、计算机使用和汽车使用）和 PA（休闲和运动）的信息结果：1566/3137 名幸存男性（平均年龄 79 岁）参加。 1377 名流动男性提供了调查问卷和加速度计数据。调查问卷低估了平均每日静坐时间；总 SB（电视、电脑使用、阅读或驾驶）时间为 317 分钟，电视时间为 176 分钟，客观测量时间为 619 分钟。客观测量与自我报告之间的相关性为 0.18（总 SB）和 0.17（TV），均 P < 0.001。自我报告 SB 的最低三个四分位数的客观 SB 水平相似，但最高四分位数的目标 SB 水平有所提高。每日步数或中度至剧烈 PA 与自我报告的总 PA 之间的相关性均为 0.49，P < 0.001，并且测量的 PA 水平在自我报告的 PA 水平较高时逐渐升高。结论：在老年男性中，简单的 SB 问题在确定总 SB 时间方面表现不佳，尽管简单的 PA 问题与客观测量的 PA 的分级增加相关。未来关于 SB 对老年男性健康影响的研究将受益于 SB 的客观测量。
Background: Older adults are the most inactive age group and self-reporting of activities may be complicated by age-related reductions in structured activities and misclassification or recall biases. We investigate the validity of simple questionnaires about sedentary behaviour (SB), (including the widely used proxy television (TV) viewing), and physical activity (PA) in comparison with objective measures.Methods: Community dwelling men aged 71-93 years, from a UK population-based cohort wore a GT3X accelerometer over the right hip for 7 days and self-completed a questionnaire including information about SB (TV, reading, computer use and car use) and PA (leisure and sporting domains).Results: 1566/3137 surviving men (mean age 79 years) attended. 1377 ambulatory men provided questionnaire and accelerometer data. Questionnaires under-estimated mean daily sedentary time; 317 minutes total SB (TV, computer use, reading or driving), 176 minutes (TV) vs 619 minutes (objectively measured). Correlations between objective measures and self-reports were 0.18 (total SB) and 0.17 (TV), both P < 0.001. Objective SB levels were similar across the lowest three quartiles of self-reported SB but raised in the highest quartile. Correlations between steps/day or moderate to vigorous PA with self-reported total PA were both 0.49, P < 0.001 and measured PA levels were progressively higher at higher levels of self-reported PA.Conclusions: Among older men, simple SB questions performed poorly for identifying total SB time, although simple PA questions were associated with a graded increase with objectively measured PA. Future studies of health effects of SB in older men would benefit from objective measures of SB.