Institute for Sport Sciences, Waseda University, Saitama 359-1192, Japan.
Faculty of Sport Sciences, Waseda University, Saitama 359-1192, Japan.
Int J Environ Res Public Health. 2019 Aug 23;16(17):3065. doi: 10.3390/ijerph16173065.
Various accelerometers have been used in research measuring physical activity (PA) and sedentary behavior (SB). This study compared two triaxial accelerometers-Active style Pro (ASP) and ActiGraph (AG)-in measuring PA and SB during work and nonwork days in free-living conditions. A total of 50 working participants simultaneously wore these two accelerometers on one work day and one nonwork day. The difference and agreement between the ASP and AG were analyzed using paired -tests, Bland-Altman plots, and intraclass coefficients, respectively. Correction factors were provided by linear regression analysis. The agreement in intraclass coefficients was high among all PA intensities between ASP and AG. SB in the AG vertical axis was approximately 103 min greater than ASP. Regarding moderate-to-vigorous-intensity PA (MVPA), ASP had the greatest amount, followed by AG. There were significant differences in all variables among these devices across all day classifications, except for SB between ASP and AG vector magnitude. The correction factors decreased the differences of SB and MVPA. PA time differed significantly between ASP and AG. However, SB and MVPA differences between these two devices can be decreased using correction factors, which are useful methods for public health researchers.
各种加速度计已被用于研究中，以测量身体活动（PA）和久坐行为（SB）。本研究比较了两种三轴加速度计——Active style Pro（ASP）和 ActiGraph（AG）——在自由生活条件下，在工作日和非工作日测量 PA 和 SB。共有 50 名工作参与者在一个工作日和一个非工作日同时佩戴这两种加速度计。使用配对 t 检验、Bland-Altman 图和组内相关系数分别分析 ASP 和 AG 之间的差异和一致性。通过线性回归分析提供校正因子。ASP 和 AG 之间所有 PA 强度的组内相关系数一致性较高。AG 垂直轴上的 SB 比 ASP 大约多 103 分钟。关于中等到剧烈强度的 PA（MVPA），ASP 的量最大，其次是 AG。除了 ASP 和 AG 向量幅度之间的 SB 外，所有设备在所有日分类中均存在显著差异。校正因子降低了 SB 和 MVPA 的差异。ASP 和 AG 之间的 PA 时间差异显著。然而，使用校正因子可以减少这两种设备之间的 SB 和 MVPA 差异，这是公共卫生研究人员的有用方法。
