Comparison of lower limb and trunk kinematics between markerless and marker-based motion capture systems
Comparison of lower limb and trunk kinematics between markerless and marker-based motion capture systems
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DOI：
10.1016/j.gaitpost.2016.10.020
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发表时间：
2017-02-01
期刊：
影响因子：
2.4
通讯作者：
McClelland, Jodie A.
中科院分区：
文献类型：
--
作者：
Perrott, Margaret A.;Pizzari, Tania;McClelland, Jodie A.
三维（3-D）运动捕捉系统被研究人员和临床医生用来分析人体运动的运动学。传统的基于标记的系统既耗时又限制了研究的规模。无标记的3-D系统使用起来更快，但每个系统捕获的数据之间的差异尚不清楚。目的：研究基于标记和无标记的运动捕捉系统捕获的运动数据之间的关系。方法：通过两项测试评估运动：简单的膝关节屈曲测试和单腿深蹲，基于标记的方案（Vicon）和无标记的方案（Organic Motion）。结果：两组患者膝关节屈曲角度差异无统计学意义（p = 0.33）。单腿深蹲时，13个临床相关关节角度中有9个从深蹲开始到深蹲高峰角度变化无显著差异。在13个关节角度中，有9个在深蹲最高点的角度有显著差异。讨论：本研究提供证据表明，基于标记的方案和无标记方案报告了从深蹲开始到单腿深蹲时骨盆和下肢的深蹲高峰的角度变化范围相似。不同方案之间不应比较具体的关节角度。(C) 2016 Elsevier B.V.版权所有
Three dimensional (3-D) motion capture systems are used by researchers and clinicians to analyze the kinematics of human movement. Traditional marker based systems are time consuming and limit the size of studies. Markerless 3-D systems are quicker to use but the differences between data captured in each system is unclear.Aim: To examine the relationship of kinematic data captured by marker based and markerless motion capture systems.Methods: Movement was assessed in two tests: a simple knee flexion test and single leg squat with a marker based protocol (Vicon) and a markerless protocol (Organic Motion).Results: There was no significant difference between protocols in knee flexion angle (p = 0.33). In single leg squat there was no significant difference in 9 of 13 clinically relevant joint angles in the change in angle from the start to the peak of squat. There were significant differences in the angle at the peak of the squat for 9 of 13 joint angles.Discussion: This study provides evidence that a marker-based and a markerless protocol report similar ranges of change in angle from the start of a squat to peak squat in the pelvis and lower limb in single leg squat. Specific joint angles should not be compared between protocols. (C) 2016 Elsevier B.V. All rights reserved.