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首页> 外文期刊>Gait & posture >Concurrent validity and intrasession reliability of the IDEEA accelerometry system for the quantification of spatiotemporal gait parameters.
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Concurrent validity and intrasession reliability of the IDEEA accelerometry system for the quantification of spatiotemporal gait parameters.

机译：时空步态参数定量的IDEEA加速计系统的并发有效性和会话间可靠性。

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摘要

The aim of this pilot study was to evaluate concurrent validity and intrasession reliability of the IDEEA (Minisun, Fresno, CA) accelerometry system (and associated software) with force plate measurements for spatiotemporal gait variables recorded during normal walking. Ten healthy individuals were asked to walk at a self-selected comfortable speed, over five multicomponent force plates embedded into the walkway floor. For each trial, spatiotemporal gait parameters (single support time, cadence, speed, step and stride length) obtained by the force plates were compared to those recorded by IDEEA. Concurrent (criterion-related) validity between the two systems was analysed with intraclass correlation (ICC) (2,1). Intrasession reliability was quantified by using coefficient of variations (CV) and ICC. For the ensemble of the parameters, ICC (2,1) ranged between 0.998 (cadence) and 0.784 (step length right) (p<0.001-0.01). However, speed, step length and stride length were significantly lower for IDEEA (~7%; p<0.001) compared to force plate data. Intrasession reliability of IDEEA was excellent, with CV lower than 5.7 and ICC higher than 0.961. The present accelerometry system demonstrated strong concurrent validity for the assessment of spatiotemporal gait parameters. However, spatial variables (stride and step length) and walking speed were significantly underestimated compared with analyses using force plates.
机译：这项初步研究的目的是评估IDEEA（Minisun，Fresno，CA）加速度计系统（及相关软件）的并发有效性和会话期间可靠性，并用力板测量正常步行过程中记录的时空步态变量。十个健康的个体被要求以自我选择的舒适速度行走，在嵌入在走道地板中的五个多分量测力板上。对于每个试验，将通过测力板获得的时空步态参数（单支撑时间，节奏，速度，步距和步幅长度）与IDEEA记录的参数进行比较。使用类内相关性（ICC）分析了两个系统之间的并发（与标准相关）的有效性（2,1）。使用变异系数（CV）和ICC量化入会时的可靠性。对于参数的整体，ICC（2,1）介于0.998（节奏）和0.784（右侧步长）之间（p <0.001-0.01）。然而，与力板数据相比，IDEEA的速度，步长和步幅明显更低（〜7％; p <0.001）。 IDEEA的会议期间可靠性非常好，CV低于5.7，ICC高于0.961。本加速度计系统显示出强大的并发有效性，用于评估时空步态参数。但是，与使用力板的分析相比，空间变量（步幅和步长）和步行速度被大大低估了。

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