Senden R, Grimm B, Heyligers I C, Savelberg H H C M, Meijer K
Atrium Medical Center, Department of Orthopaedics & Traumatology, Heerlen, Henri Dunantstraat 5, Heerlen, P.O. Box 4446, 6401 CX Heerlen, The Netherlands.
Gait Posture. 2009 Aug;30(2):192-6. doi: 10.1016/j.gaitpost.2009.04.008. Epub 2009 May 27.
Accelerometers enable us to analyse gait outside conventional gait laboratories. Before these devices can be used in large scale studies and in clinical settings a thorough evaluation of their performance in different populations is required. The aim of this study was to present an acceleration-based reference database for healthy gait. The repeatability and inter-observer reliability of acceleration-based gait analysis was investigated. The sensitivity was tested on different age groups and the effect of gender was studied. A comprehensive set of gait parameters (i.e. cadence, speed, asymmetry and irregularity) were studied in 60 women and 60 men. Basic gait parameters showed high repeatability (VC(cadence) 1.51%, ICC(cadence) 0.996) and inter-observer reliability (ICC(cadence) 0.916), while asymmetry and irregularity showed lower repeatability (VC(asym) 47.88%, ICC(asym) 0.787) and inter-observer reliability (ICC(asym) 0.449). The effects of age and gender on gait parameters were found to be consistent with those reported in studies using other methodologies. These findings and the advantages of the device support the application of AGA for routine clinical use and in daily life.
加速度计使我们能够在传统步态实验室之外分析步态。在这些设备可用于大规模研究和临床环境之前，需要对其在不同人群中的性能进行全面评估。本研究的目的是提供一个基于加速度的健康步态参考数据库。研究了基于加速度的步态分析的重复性和观察者间可靠性。测试了不同年龄组的敏感性，并研究了性别的影响。对60名女性和60名男性的一组综合步态参数（即步频、速度、不对称性和不规则性）进行了研究。基本步态参数显示出高重复性（步频的变异系数为1.51%，组内相关系数为0.996）和观察者间可靠性（步频的组内相关系数为0.916），而不对称性和不规则性显示出较低的重复性（不对称性的变异系数为47.88%，组内相关系数为0.787）和观察者间可靠性（不对称性的组内相关系数为0.449）。发现年龄和性别对步态参数的影响与使用其他方法的研究报告一致。这些发现以及该设备的优势支持将基于加速度的步态分析应用于常规临床使用和日常生活中。
