Characteristics of a protocol to collect objective physical activity/sedentary behaviour data in a large study: Seniors USP (understanding sedentary patterns).
Characteristics of a protocol to collect objective physical activity/sedentary behaviour data in a large study: Seniors USP (understanding sedentary patterns).
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DOI：
10.1123/jmpb.2017-0004
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发表时间：
2018-03
期刊：
影响因子：
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通讯作者：
Chastin S
中科院分区：
文献类型：
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作者：
Dall PM;Skelton DA;Dontje ML;Coulter EH;Stewart S;Cox SR;Shaw RJ;Čukić I;Fitzsimons CF;Greig CA;Granat MH;Der G;Deary IJ;Chastin S
USP 老年人研究测量了老年人的久坐行为（activPAL3，佩戴 9 天）。该测量协议具有三个关键特征： 实现 24 小时佩戴（监控位置、防水）；最大限度地减少数据丢失（减少监测故障、员工培训、沟通）；和质量保证（研究人员去除，对磨损的信心）。两台显示器没有归还； 91% (n=700) 的返回监测器具有 7 天的有效数据。数据丢失的原因包括监测器故障 (n=11)、质量保证后排除 (n=5)、因皮肤刺激而提前移除 (n=8) 或程序错误 (n=10)。在大型研究中客观测量身体活动和久坐行为需要在数据量（收集代表性数据）和效用（反映实际行为的派生结果）之间进行决策权衡。
The Seniors USP study measured sedentary behaviour (activPAL3, 9 day wear) in older adults. The measurement protocol had three key characteristics: enabling 24-hour wear (monitor location, waterproofing); minimising data loss (reducing monitor failure, staff training, communication); and quality assurance (removal by researcher, confidence about wear). Two monitors were not returned; 91% (n=700) of returned monitors had 7 valid days of data. Sources of data loss included monitor failure (n=11), exclusion after quality assurance (n=5), early removal for skin irritation (n=8) or procedural errors (n=10). Objective measurement of physical activity and sedentary behaviour in large studies requires decisional trade-offs between data quantity (collecting representative data) and utility (derived outcomes that reflect actual behaviour).