Nigg B M, De Boer R W, Fisher V
Human Performance Laboratory, University of Calgary, Alberta, Canada.
Med Sci Sports Exerc. 1995 Jan;27(1):98-105.
Treadmills are often used in research projects to simulate overground locomotion, assuming that locomotion is similar on a treadmill and overground. The purpose of this investigation was to determine whether a treadmill could be used to simulate overground locomotion. Twenty-two subjects ran on four different surfaces: overground and three treadmills that differed in size and power. The kinematics of the right leg and foot were studied using two high-speed Locam cameras (lateral and posterior view). The subjects ran in two different shoes at four different speeds (3.0-6.0 m.s-1). The differences in the kinematics between treadmill and overground running could be divided into systematic and subject dependent components. Subjects systematically planted their feet in a flatter position on the treadmill than overground. Most of the lower extremity kinematic variables, however, showed inconsistent trends for individual subjects, depending on the individual subject's running style, running speed, and shoe/treadmill situation. The differences were substantial. It is not yet understood how the human locomotor system adapts to a particular treadmill running situation. However, it is concluded that individual assessment of running kinematics on a treadmill for shoe or shoe orthotic assessment may possibly lead to inadequate conclusions about overground running.
跑步机经常在研究项目中被用于模拟地面运动，前提是跑步机上的运动与地面运动相似。本研究的目的是确定跑步机是否可用于模拟地面运动。22名受试者在四种不同的表面上跑步：地面以及三种尺寸和功率不同的跑步机。使用两台高速Locam摄像机（侧视图和后视图）研究右腿和足部的运动学。受试者穿着两种不同的鞋子以四种不同速度（3.0 - 6.0米/秒）跑步。跑步机跑步和地面跑步之间的运动学差异可分为系统性和个体依赖性成分。受试者在跑步机上比在地面上更系统地以更平的姿势着地。然而，大多数下肢运动学变量对个体受试者呈现出不一致的趋势，这取决于个体受试者的跑步方式、跑步速度以及鞋子/跑步机情况。差异很大。目前尚不清楚人类运动系统如何适应特定的跑步机跑步情况。然而，可以得出结论，在跑步机上对跑步运动学进行个体评估以用于鞋子或鞋垫评估，可能会对地面跑步得出不充分的结论。
