PROFITH "PROmoting FITness and Health through physical activity" Research Group, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Ctra. Alfacar s/n, 18011, Granada, Spain.
Department of Sport Medicine, Norwegian School of Sport Sciences, Oslo, Norway.
Sports Med. 2017 Sep;47(9):1821-1845. doi: 10.1007/s40279-017-0716-0.
Accelerometers are widely used to measure sedentary time, physical activity, physical activity energy expenditure (PAEE), and sleep-related behaviors, with the ActiGraph being the most frequently used brand by researchers. However, data collection and processing criteria have evolved in a myriad of ways out of the need to answer unique research questions; as a result there is no consensus.
The purpose of this review was to: (1) compile and classify existing studies assessing sedentary time, physical activity, energy expenditure, or sleep using the ActiGraph GT3X/+ through data collection and processing criteria to improve data comparability and (2) review data collection and processing criteria when using GT3X/+ and provide age-specific practical considerations based on the validation/calibration studies identified.
Two independent researchers conducted the search in PubMed and Web of Science. We included all original studies in which the GT3X/+ was used in laboratory, controlled, or free-living conditions published from 1 January 2010 to the 31 December 2015.
The present systematic review provides key information about the following data collection and processing criteria: placement, sampling frequency, filter, epoch length, non-wear-time, what constitutes a valid day and a valid week, cut-points for sedentary time and physical activity intensity classification, and algorithms to estimate PAEE and sleep-related behaviors. The information is organized by age group, since criteria are usually age-specific.
This review will help researchers and practitioners to make better decisions before (i.e., device placement and sampling frequency) and after (i.e., data processing criteria) data collection using the GT3X/+ accelerometer, in order to obtain more valid and comparable data.
CRD42016039991.
加速度计被广泛用于测量久坐时间、身体活动、身体活动能量消耗 (PAEE) 和与睡眠相关的行为，研究人员最常使用的品牌是 ActiGraph。然而，出于回答独特研究问题的需要，数据收集和处理标准已经以多种方式演变；因此，没有共识。
本综述的目的是：(1) 通过数据收集和处理标准，编译和分类评估使用 ActiGraph GT3X/+ 的久坐时间、身体活动、能量消耗或睡眠的现有研究，以提高数据可比性，(2) 审查使用 GT3X/+ 时的数据收集和处理标准，并根据确定的验证/校准研究提供特定年龄的实际注意事项。
两名独立研究人员在 PubMed 和 Web of Science 中进行了搜索。我们纳入了所有在实验室、对照或自由生活条件下使用 GT3X/+ 的原始研究，这些研究发表于 2010 年 1 月 1 日至 2015 年 12 月 31 日。
本系统综述提供了有关以下数据收集和处理标准的关键信息：放置位置、采样频率、滤波器、时间片段长度、非佩戴时间、有效天和有效周的构成、久坐时间和身体活动强度分类的临界值，以及估计 PAEE 和与睡眠相关行为的算法。信息按年龄组组织，因为标准通常是特定于年龄的。
本综述将帮助研究人员和从业者在使用 GT3X/+ 加速度计进行数据收集之前（即设备放置和采样频率）和之后（即数据处理标准）做出更好的决策，以获得更有效和更可比的数据。
PROSPERO 注册号：CRD42016039991。
