Validity of the Microsoft Kinect for assessment of postural control
Validity of the Microsoft Kinect for assessment of postural control
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DOI：
10.1016/j.gaitpost.2012.03.033
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发表时间：
2012-07-01
期刊：
影响因子：
2.4
通讯作者：
Bryant, Adam L.
中科院分区：
文献类型：
--
作者：
Clark, Ross A.;Pua, Yong-Hao;Bryant, Adam L.
临床上可行的方法来评估姿势控制，如定时站立平衡和功能达到测试提供了重要的信息，但是，他们不能准确地量化特定的姿势控制机制。Microsoft Kinect（TM）系统提供三维（3D）的实时解剖学标志位置数据，并且考虑到它便宜、便携且易于设置，它可以弥补这一差距。该研究评估了Microsoft Kinect（TM）与基准参考（多摄像头3D运动分析系统）在20名健康受试者中进行三种姿势控制测试的同时有效性：（i）前伸，（ii）侧伸，和（iii）单腿闭眼站立平衡。对于伸展测试，结果测量包括矢状面（前伸）和冠状面（侧向）中的伸展距离和躯干屈曲角度。对于站立平衡测试，评估了胸骨、骨盆、膝关节和踝关节解剖标志位置的运动范围和偏差以及躯干外侧和前侧屈曲角。Microsoft Kinect（TM）和3D运动分析系统具有相当的试验间可靠性（ICC差异= 0.06 +/- 0.05;范围，0.00-0.16）和出色的同时有效性，大多数测量的Pearson r值>0.90（r = 0.96 +/- 0.04;范围，0.84-0.99）。然而，普通的最小乘积分析表明，与骨盆和胸骨相关的一些结局指标存在比例偏倚。这些发现表明，微软Kinect（TM）可以有效地评估姿势控制的运动策略。鉴于潜在的好处，它可能因此成为一个有用的工具，在临床环境中评估姿势控制。(C)2012年爱思唯尔B。V.保留所有权利。
Clinically feasible methods of assessing postural control such as timed standing balance and functional reach tests provide important information, however, they cannot accurately quantify specific postural control mechanisms. The Microsoft Kinect (TM) system provides real-time anatomical landmark position data in three dimensions (3D), and given that it is inexpensive, portable and simple to setup it may bridge this gap. This study assessed the concurrent validity of the Microsoft Kinect (TM) against a benchmark reference, a multiple-camera 3D motion analysis system, in 20 healthy subjects during three postural control tests: (i) forward reach, (ii) lateral reach, and (iii) single-leg eyes-closed standing balance. For the reach tests, the outcome measures consisted of distance reached and trunk flexion angle in the sagittal (forward reach) and coronal (lateral reach) planes. For the standing balance test the range and deviation of movement in the anatomical landmark positions for the sternum, pelvis, knee and ankle and the lateral and anterior trunk flexion angle were assessed. The Microsoft Kinect (TM) and 3D motion analysis systems had comparable inter-trial reliability (ICC difference = 0.06 +/- 0.05; range, 0.00-0.16) and excellent concurrent validity, with Pearson's r-values >0.90 for the majority of measurements (r = 0.96 +/- 0.04; range, 0.84-0.99). However, ordinary least products analyses demonstrated proportional biases for some outcome measures associated with the pelvis and sternum. These findings suggest that the Microsoft Kinect (TM) can validly assess kinematic strategies of postural control. Given the potential benefits it could therefore become a useful tool for assessing postural control in the clinical setting. (C) 2012 Elsevier B. V. All rights reserved.