Biomechanics of overground vs. treadmill walking in healthy individuals
Biomechanics of overground vs. treadmill walking in healthy individuals
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DOI：
10.1152/japplphysiol.01380.2006
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发表时间：
2008-03-01
影响因子：
3.3
通讯作者：
Hidler, Joseph
中科院分区：
文献类型：
--
作者：
Lee, Song Joo;Hidler, Joseph
这项研究的目的是比较没有步态障碍的健康受试者在跑步机上行走和在地上行走的情况。研究人员对19名受试者进行了测试，每个受试者在带分离带的跑步机上行走，也在光滑平坦的地面上行走。在不同的步行条件下，对步长和步速、腿部运动学、关节力矩和力量以及肌肉活动等时间步态参数进行比较。总的来说，在跑步机和地上行走之间，很少发现时间步态参数或腿部运动学的差异。相反，矢状面关节力矩被发现是完全不同的，在跑步机行走试验中，受试者表现出更少的背屈肌力矩，更少的膝关节伸肌力矩和更大的髋关节伸肌力矩。在矢状面关节的力量被发现在踝关节相似，但在膝关节和髋关节有很大的不同。在两种行走方式之间观察到肌肉活动的差异，特别是在整个站立时的胫骨前肌，以及在摇摆时的腘绳肌、股内侧肌和长内收肌。虽然两种行走方式在肌肉激活模式、关节力矩和关节力量方面存在差异，但这些行为的总体模式非常相似。从治疗的角度来看，这表明在跑步机上训练神经损伤患者似乎是合理的。
The goal of this study was to compare treadmill walking with overground walking in healthy subjects with no known gait disorders. Nineteen subjects were tested, where each subject walked on a split-belt instrumented treadmill as well as over a smooth, flat surface. Comparisons between walking conditions were made for temporal gait parameters such as step length and cadence, leg kinematics, joint moments and powers, and muscle activity. Overall, very few differences were found in temporal gait parameters or leg kinematics between treadmill and overground walking. Conversely, sagittal plane joint moments were found to be quite different, where during treadmill walking trials, subjects demonstrated less dorsiflexor moments, less knee extensor moments, and greater hip extensor moments. Joint powers in the sagittal plane were found to be similar at the ankle but quite different at the knee and hip joints. Differences in muscle activity were observed between the two walking modalities, particularly in the tibialis anterior throughout stance, and in the hamstrings, vastus medialis and adductor longus during swing. While differences were observed in muscle activation patterns, joint moments and joint powers between the two walking modalities, the overall patterns in these behaviors were quite similar. From a therapeutic perspective, this suggests that training individuals with neurological injuries on a treadmill appears to be justified.