步数标准化：使用PiezoRxD和wGT3X-BT对Withings Activite的步数进行验证。
Step Count Standardization: Validation of Step Counts from the Withings Activite using PiezoRxD and wGT3X-BT.
作者信息
Au-Yeung Wan-Tai M, Kaye Jeffrey A, Beattie Zachary
出版信息
Annu Int Conf IEEE Eng Med Biol Soc. 2020 Jul;2020:4608-4611. doi: 10.1109/EMBC44109.2020.9176511.
Abstract
Daily step counts from the Withings Activite were validated against those collected concurrently from the PiezoRxD Pedometer and the wGT3X-BT Actigraph worn on the waist and on the wrist in free-living conditions from 10 older adult volunteers. The Withings Activite underestimated step counts but showed good correlations with the other devices (Pearson correlation coefficient: 0.850 - 0.891).Clinical Relevance - Although the Withings Activite underestimated steps, they may be used in studies to estimate relative level of physical activity in free-living conditions since they have good correlations with other well-validated devices. Underestimation of steps may be corrected using linear transformation.
摘要
在自由生活条件下，对10名老年志愿者佩戴在腰部和手腕上的PiezoRxD计步器以及wGT3X - BT活动记录仪同时收集的数据进行验证，以检验Withings Activite的每日步数记录。Withings Activite低估了步数，但与其他设备显示出良好的相关性（皮尔逊相关系数：0.850 - 0.891）。临床意义——尽管Withings Activite低估了步数，但由于它们与其他经过充分验证的设备具有良好的相关性，因此可用于研究中估计自由生活条件下的身体活动相对水平。步数的低估可通过线性变换进行校正。
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