Validity of the Omron pedometer and the actigraph step count function in preschoolers
Validity of the Omron pedometer and the actigraph step count function in preschoolers
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DOI：
10.1016/j.jsams.2014.06.001
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发表时间：
2015-05-01
影响因子：
4
通讯作者：
Cardon, Greet
中科院分区：
文献类型：
--
作者：
De Craemer, Marieke;De Decker, Ellen;Cardon, Greet
目的：验证GT 1 M活动记录仪加速度计步数功能和Omron Walking Style Pro计步器与基于加速度计的活动计数，并比较学龄前儿童基于计步器和基于加速度计的步数。设计：41名学龄前儿童的样本来自比利时弗兰德斯一所学前班的21名男孩，平均年龄5.43 ± 0.63岁，被纳入数据分析。在这个佛兰芒学龄前儿童样本中，同时收集了基于加速计和基于计步器的步骤。学龄前儿童连续四天佩戴两个运动传感器（加速度计和计步器）。计算Pearson相关性以比较加速度计活动计数与基于加速度计的步数、加速度计活动计数与基于步数计的步数以及基于加速度计的步数与基于步数计的步数。Bland-Altman分析进行了调查之间的协议基于步数计和基于加速度计steps.Results：基于加速度计的步数与加速度计的活动计数每小时（r=0.77）和每天（r=0.82）中等偏高。基于计步器的步数与每小时（r=0.65）和每天（r=0.64）的加速度计活动计数中度相关。两种设备的步数之间存在高度相关性（每小时：r = 0.92;每日：r=0.89）。Bland-Altman分析显示偏差为221.81（+/- 1679.78），一致性的限制范围为-3070.57至3514.18步/天。结论：基于加速计和基于步数计的步数都是有效的估计学龄前儿童的身体活动水平在自由生活活动的基础上组估计。两个步数之间的高度一致性证明了结合和比较基于计步器和基于加速度计的步数的合理性。(C)2014年澳大利亚运动医学。由爱思唯尔有限公司出版。保留所有权利。
Objectives: To validate the GT1M actigraph accelerometer step count function, and the Omron Walking Style Pro pedometer against accelerometer-based activity counts, and to compare pedometer-based and accelerometer-based steps in preschoolers.Design: A sample of 41 preschoolers (21 boys, mean age 5.43 +/- 0.63 years) from one preschool in Flanders, Belgium, was included in data analysis.Methods: Accelerometer-based and pedometer-based steps were simultaneously collected in this Flemish sample of preschool children. Preschoolers wore two motion sensors (accelerometer and pedometer) for four consecutive days. Pearson correlations were calculated to compare accelerometer activity counts with accelerometer-based steps, accelerometer activity counts with pedometer-based steps and accelerometer-based steps with pedometer-based steps. Bland-Altman analysis was carried out to investigate the agreement between the pedometer-based and the accelerometer-based steps.Results: Accelerometer-based steps correlated moderately high with accelerometer activity counts per hour (r=0.77) and per day (r=0.82). Pedometer-based steps correlated moderately high with accelerometer activity counts per hour (r=0.65) and per day (r=0.64). High correlations were revealed between steps from both devices (hourly: r = 0.92; daily: r=0.89). The Bland-Altman analysis showed a bias of 221.81 (+/- 1679.78) and the limits of agreement ranged from -3070.57 to 3514.18 steps per day.Conclusions: Both the accelerometer-based as pedometer-based step counts are valid estimates of preschoolers' physical activity levels during free-living activities based on group estimates. High agreement between both step counts justifies combining and comparing pedometer- and accelerometer-based step counts. (C) 2014 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.