Wu Ming, Landry Jill M, Kim Janis, Schmit Brian D, Yen Sheng-Che, McDonald Jillian, Zhang Yunhui
From the Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, Illinois (MW, JML, JK, BDS, S-CY, JM, YZ); Department of Physical Medicine and Rehabilitation, Northwestern University Medical School, Chicago, Illinois (MW, BDS, S-CY); and Department of Biomedical Engineering, Marquette University, Milwaukee, Wisconsin (BDS).
Am J Phys Med Rehabil. 2016 Dec;95(12):911-920. doi: 10.1097/PHM.0000000000000517.
To determine whether repeat exposure to force perturbations during treadmill training can induce long-term retention of improved step length and overall improvements in locomotor function in persons with spinal cord injury.
Fourteen patients with spinal cord injury were recruited and randomly assigned to swing resistance or swing assistance training groups. A controlled swing resistance or assistance force, for resistance or assistance training groups, respectively, was applied to both legs through a cable-driven robotic system during treadmill training. Each participant trained 3 times per week for 6 weeks. Step length, walking speed, 6-minute walking distance, and other clinical assessments were evaluated before and after 6 weeks of training and 8 weeks after the end of training.
A significant increase in step length was observed after 6 weeks of resistance training (P = 0.04). Step length tended to increase after assistance treadmill training, but the change was not significant (P = 0.18). The changes in step length and functional gains had no significant difference between 2 groups.
Repeat exposure to swing resistance during treadmill training may induce a prolonged retention of increased step length, although it remains unclear whether swing resistance versus assistance is more effective in inducing increased step length.
确定在跑步机训练期间反复暴露于力扰动是否能使脊髓损伤患者长期保持增加的步长，并全面改善运动功能。
招募了14名脊髓损伤患者，并随机分配到摆动阻力训练组或摆动辅助训练组。在跑步机训练期间，通过缆线驱动的机器人系统分别对阻力训练组和辅助训练组的双腿施加受控的摆动阻力或辅助力。每位参与者每周训练3次，共训练6周。在训练6周前后以及训练结束8周后评估步长、步行速度、6分钟步行距离及其他临床指标。
阻力训练6周后步长显著增加（P = 0.04）。辅助跑步机训练后步长有增加趋势，但变化不显著（P = 0.18）。两组之间步长变化和功能改善无显著差异。
跑步机训练期间反复暴露于摆动阻力可能会使增加的步长得到长期保持，尽管摆动阻力与摆动辅助相比哪种方式在增加步长方面更有效仍不清楚。
