Sinclair Jonathan, Hobbs Sarah J, Taylor Paul J, Currigan Graham, Greenhalgh Andrew
Division of Sport Exercise and Nutritional Sciences, University of Central Lancashire, Preston, Lancashire, UK.
J Appl Biomech. 2014 Feb;30(1):166-72. doi: 10.1123/jab.2012-0238.
In running analyses where both kinetic and kinematic information is recorded, participants are required to make foot contact with a force and/or pressure measuring transducer. Problems arise if participants modify their gait patterns to ensure contact with the device. There is currently a paucity of research investigating the influence of different underfoot kinetic measuring devices on 3-dimensional kinematics of running. Fifteen participants ran at 4.0 m/s in four different conditions: over a floor embedded force plate, Footscan, Matscan, and with no device. Three-dimensional angular kinematic parameters were collected using an eight camera motion analysis system. Hip, knee, and ankle joint kinematics were contrasted using repeated-measures ANOVAs. Participants also rated their subjective comfort in striking each of the three force measuring devices. Significant differences from the uninhibited condition were observed using the Footscan and Matscan in all three planes of rotation, whereas participants subjectively rated the force plate significantly more comfortable than either the Footscan/Matscan devices. The findings of the current investigation therefore suggest that the disguised floor embedded force plate offers the most natural running condition. It is recommended that analyses using devices such as the Footscan/Matscan mats overlying the laboratory surface during running should be interpreted with caution.
在进行同时记录动力学和运动学信息的分析时，参与者需要用测力和/或压力测量传感器接触脚部。如果参与者为确保与设备接触而改变其步态模式，就会出现问题。目前，研究不同的足底动力学测量设备对跑步三维运动学影响的研究较少。15名参与者在四种不同条件下以4.0米/秒的速度跑步：在嵌入地面的测力板上、在Footscan、Matscan上，以及不使用任何设备。使用八台摄像机运动分析系统收集三维角运动学参数。使用重复测量方差分析对比髋、膝和踝关节的运动学。参与者还对踩在三种测力设备上的主观舒适度进行了评分。在所有三个旋转平面上，使用Footscan和Matscan时观察到与无限制条件存在显著差异，而参与者主观上认为测力板比Footscan/Matscan设备更舒适。因此，当前研究的结果表明，隐藏式嵌入地面的测力板提供了最自然的跑步条件。建议在解释跑步过程中使用覆盖在实验室地面上的Footscan/Matscan垫子等设备进行的分析时要谨慎。
