Reliability of Passive Physical Activity Assessment for Inpatients Using Marker-Free Motion Tracking System
Reliability of Passive Physical Activity Assessment for Inpatients Using Marker-Free Motion Tracking System
复制标题
使用无标记运动跟踪系统对住院患者进行被动身体活动评估的可靠性
DOI：
10.11916/j.issn.1005-9113.jhit2019033
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发表时间：
2021-04
期刊：
影响因子：
--
通讯作者：
Wanxia Yao
中科院分区：
文献类型：
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作者：
Biao Yang;Kewei Duan;Wanxia Yao
基于证据的公共卫生实践将受益于被动体力活动评估的量化。本研究的目的是探讨无标记系统（MFS），如微软Kinect测量上肢运动从不同角度的可靠性。10名健康受试者沿沿着额侧和正中解剖平面进行肘关节和肩关节伸展/屈曲，重复10次起搏控制，在此期间，由两个传感器从0°和45°视角同时记录上肢关节的时空位置。两个传感器之间的可靠性进行了评估，使用皮尔逊相关系数，类内相关系数，95%的协议和变异系数的限制。当闭塞的可能性更高时，观察到更差的可靠性。但以较长的观察间隔（10 s）为基本测量单位时，其可靠性优于以较短的观察间隔（2 s）为基本测量单位时。作为位移或角度变化的活动的总体角度可靠性不令人满意。预计研究结果将为业界提供信息，以便将MFS扩展到临床应用。
Evidence-based practices of public health will benefit from quantification of passive physical activity assessment. This study aims to investigate the reliability of marker-free system (MFS) such as Microsoft Kinect in measuring upper extremity motion from different angles. Ten healthy participants performed elbow and shoulder extension/flexion along frontal and median anatomical planes for ten pace-controlled repetitions, during which the spatiotemporal positions of upper extremity joints were concurrently recorded by two sensors from 0° and 45° viewing angles. Reliability between the two sensors were evaluated using Pearson correlation coefficient, intra-class correlation coefficients, and 95% limits of agreement and coefficient of variation. Worse reliability was observed when possibility of occlusion was higher. However, better reliability was found when longer observation interval (10 s) was used as elementary measuring unit than shorter observation interval (2 s). The overall angular reliability of activity as displacement or changes in angle was not satisfactory. The results are expected to inform the industry for the extension of MFS to clinic applications.