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对于行走过程中估计的质量中心位移和速度,Protokinetics运动分析软件的同时有效性

Julia Greenfield¹, Romain Guichard², Romain Kubiak²

¹Institute of Digital Medicine, University Hospital of Giessen and Marburg, Philipps University Marburg, Marburg, Germany.

|October 30, 2024

概括

原动力学运动分析软件 (PKMAS) 提供估计的质量中心 (COM) 位移,但其准确性值得怀疑. 该软件显示出明显的偏差和不良一致性,特别是在中侧方向,限制了其临床使用.

科学领域:

生物力学生物力学
步态分析步态分析
运动科学运动科学

背景情况:

实验室外的步态分析正在进步,新的软件如Protokinetics运动分析软件 (PKMAS) 估计质量中心 (COM) 位移.
在临床环境和体育表现评估中,COM位移估计具有潜在的应用.

研究的目的:

为了评估PKMAS在估计重心 (COM) 位移和步行时的速度时的准确性.
为了将PKMAS衍生的COM数据与黄金标准的VICON运动捕捉系统进行比较.

主要方法:

15名参与者在ZenoTM步道上进行了行走试验,同时使用VICON运动捕捉追踪.
用PKMAS衍生的前后 (AP) 和中侧 (ML) COM位移与VICON 3D COM数据进行了比较,使用布兰德-阿尔特曼分析和林的一致系数.
从PKMAS位移数据计算出COM速度,并以类似的方式进行分析.

主要成果:

在AP和ML方向上,PKMAS显示了COME位移的高平均偏差.
通过PKMAS进行的COM速度估计具有较低的平均偏差,但具有较高的一致限度和较低的精度.
林的一致性相关系数表明,AP位移和速度的一致性很好或很好,但ML组件的一致性很差.

结论:

通过PKMAS估计质量中心 (COM) 不准确,在健康个体中应谨慎使用.
由于不准确性,不建议PKMAS用于分析患有病理状况的个体的步态.
在广泛采用PKMAS用于COM位移分析之前,需要进一步验证.

关键词:

布兰德-阿尔特曼分析额外推算的质量中心.步态分析步态分析有压力的走道.验证验证验证验证

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