School of Physical Therapy and Rehabilitation Sciences, University of South Florida, Tampa, FL 33612, USA.
Exp Brain Res. 2010 May;202(4):809-24. doi: 10.1007/s00221-010-2187-5. Epub 2010 Feb 26.
This study investigated whether short-term modifications of gait could be induced in healthy adults and whether a combination of kinetic (a compliant force resisting deviation of the foot from the prescribed footpath) and visual guidance was superior to either kinetic guidance or visual guidance alone in producing this modification. Thirty-nine healthy adults, 20-33 years old, were randomly assigned to the three groups receiving six 10-min blocks of treadmill training requiring them to modify their footpath to match a scaled-down path. Changes of the footpath, specific joint events and joint moments were analyzed. Persons receiving combined kinetic and visual guidance showed larger modifications of their gait patterns that were maintained longer, persisting up to 2 h after intervening over-ground activities, than did persons receiving training with primarily kinetic guidance or with visual guidance alone. The results emphasize the short-term plasticity of locomotor circuits and provide a possible basis for persons learning to achieve more functional gait patterns following a stroke or other neurological disorders.
这项研究旨在探讨健康成年人的步态是否可以在短期内得到改变，以及在产生这种改变方面，结合动力学（一种抵抗足部偏离规定路径的顺应性力）和视觉指导是否优于仅使用动力学指导或视觉指导。39 名年龄在 20-33 岁之间的健康成年人被随机分配到三组，他们在跑步机上接受了六组 10 分钟的训练，要求他们改变自己的步态以适应缩小的路径。分析了路径的变化、特定关节事件和关节力矩。与主要接受动力学指导或仅接受视觉指导的人相比，同时接受动力学和视觉指导的人表现出更大的步态模式改变，且这种改变持续时间更长，甚至在干预地面活动后 2 小时仍能保持。研究结果强调了运动回路的短期可塑性，并为那些在中风或其他神经障碍后学习实现更功能性步态模式的人提供了可能的基础。
