A force measuring treadmill in clinical gait analysis
A force measuring treadmill in clinical gait analysis
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DOI：
10.1016/j.gaitpost.2003.11.001
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发表时间：
2004-12-01
期刊：
影响因子：
2.4
通讯作者：
Detrembleur, C
中科院分区：
文献类型：
--
作者：
Dierick, F;Penta, M;Detrembleur, C
本初步研究提出了一种测量地面反作用力（GRF）的仪器化跑步机设备的开发和测试，以及在临床步态分析中使用这种测力跑步机（FMT）的可行性。市售跑步机进行了修改，并配备了三维应变计力传感器。为了评估FMT的性能，进行了线性度、压力中心位置（CoP）、串扰、固有频率、背景噪声和带速的测试。此外，GRF和节段运动学记录，而健康受试者和患者走上FMT，以计算净踝关节力矩和身体质心（CMb）的运动学和力学。技术测试的初步结果是令人满意的误差小于10%，在健康受试者的动态测试符合文献。患者的结果明显受到干扰，证明了FMT区分病理步态和正常步态的能力。我们的结论是，从FMT获得的GRF测量似乎是有效的，净关节力矩和CMb运动学和力学的临床评估似乎是可行的。FMT可能是用于临床研究和常规步态分析的有用装置，因为它允许获得一些额外的空间并在大量连续步态周期期间和在宽范围的稳态步态速度上快速收集GRF。然而，在这方面还需要做更多的工作，以确认目前的结果，收集参考数据，并验证跨病理学的方法。(C)2003 Elsevier B.V.保留所有权利。
This preliminary study presents the development and testing of an instrumented treadmill device measuring the ground reaction forces (GRFs) and the feasibility of using this force measuring treadmill (FMT) in clinical gait analysis. A commercially available treadmill was modified and fitted out with three-dimensional strain-gauge force transducers. Tests of linearity, centre of pressure position (CoP), cross talk, natural frequency, background noises, and belt speed were undertaken in order to assess the performance of the FMT. In addition, the GRFs and segmental kinematics were recorded while healthy subjects and patients walked on the FMT, in order to compute the net ankle joint moments and the body centre of mass (CMb) kinematics and mechanics. The preliminary results of technical tests were satisfactory with an error less than 10% and dynamic tests in healthy subjects corresponded to the literature. The results of patients were clearly disturbed, demonstrating the ability of the FMT to discriminate pathological gaits from normal ones. We concluded that the GRFs measurements obtained from the FMT seem valid and the clinical assessment of net joint moments and CMb kinematics and mechanics seem feasible. The FMT could be useful device for clinical research and routine gait analysis since it allows gaining some extra room and quickly collecting the GRFs during a large number of successive gait cycles and over a wide range of steady-state gait speeds. However, more work is needed in this area in order to confirm the present results, collect reference data and validate the methodology across pathologies. (C) 2003 Elsevier B.V. All rights reserved.