Three-dimensional kinematic comparison of treadmill and overground running
Three-dimensional kinematic comparison of treadmill and overground running
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DOI：
10.1080/14763141.2012.759614
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发表时间：
2013-09-01
影响因子：
2.2
通讯作者：
Hobbs, Sarah J.
中科院分区：
文献类型：
--
作者：
Sinclair, Jonathan;Richards, Jim;Hobbs, Sarah J.
跑步机是一个有吸引力的装置，用于研究人类运动，但在何种程度上下肢运动学不同于地上运行仍然是一个有争议的话题。本研究旨在提供一个广泛的三维运动学比较下肢在地上和跑步机上运行。12名参与者在跑步机和地上条件下以4.0 m/s（+/- 5%）的速度跑步。下肢的角度运动学参数在站立相收集在250赫兹使用八相机运动分析系统。髋关节、膝关节和踝关节的运动学在矢状面、冠状面和横断面上进行量化，并使用配对t检验进行对比。在分析的参数中，发现在跑步机跑步期间，足部着地时的髋关节屈曲和踝关节向峰值角度的偏移分别显著降低了12度（p=0.001）和6.6度（p=0.010）。跑步机跑步与踝关节外翻峰值显著增大相关（6.3度，p=0.006）。得出的结论是，跑步机运行的机制不能推广到地上运行。
The treadmill is an attractive device for the investigation of human locomotion, yet the extent to which lower limb kinematics differ from overground running remains a controversial topic. This study aimed to provide an extensive three-dimensional kinematic comparison of the lower extremities during overground and treadmill running. Twelve participants ran at 4.0m/s (+/- 5%) in both treadmill and overground conditions. Angular kinematic parameters of the lower extremities during the stance phase were collected at 250Hz using an eight-camera motion analysis system. Hip, knee, and ankle joint kinematics were quantified in the sagittal, coronal, and transverse planes, and contrasted using paired t-tests. Of the analysed parameters hip flexion at footstrike and ankle excursion to peak angle were found to be significantly reduced during treadmill running by 12 degrees (p=0.001) and 6.6 degrees (p=0.010), respectively. Treadmill running was found to be associated with significantly greater peak ankle eversion (by 6.3 degrees, p=0.006). It was concluded that the mechanics of treadmill running cannot be generalized to overground running.