Staszkiewicz Robert, Chwała Wiesław, Forczek Wanda, Laska Jerzy
Department of Biomechanics, University School of Physical Education in Kraków, Poland.
Acta Bioeng Biomech. 2012;14(1):75-82.
In biomechanical studies of human locomotion, treadmill is a widely used measuring device. The purpose of this paper was to determine the values of kinematic parameters describing gait with the velocity of 5 km/h, both on the ground and on a treadmill. Besides, the authors assessed the impact of the surface on the mobility of three main joints of lower extremities in the sagittal plane. The measurements were done on a sample of 48 men aged between 21 and 23. The most important element of a measuring set was the Vicon system. Based on kinematic parameters our data indicated that during walking on a treadmill step frequency was slightly higher than that on the ground. Probably, due to that fact there were found some differences in other variables (e.g., single support as well as step and stride time). Besides, the results revealed that the type of surface affects joint range of motion, in particular ankle plantar flexion, the instantaneous values of joint angles and change in dynamics of these values.
在人体运动的生物力学研究中，跑步机是一种广泛使用的测量设备。本文的目的是确定在地面和跑步机上以5公里/小时的速度行走时描述步态的运动学参数值。此外，作者评估了表面对矢状面下肢三个主要关节活动度的影响。测量是在48名年龄在21至23岁之间的男性样本上进行的。测量设备中最重要的元件是Vicon系统。基于运动学参数，我们的数据表明，在跑步机上行走时，步频略高于在地面上行走时。可能由于这一事实，在其他变量（如单支撑以及步幅和步长时间）中发现了一些差异。此外，结果表明，表面类型会影响关节活动范围，特别是踝关节跖屈、关节角度的瞬时值以及这些值的动力学变化。
