A Novel Application of Eddy Current Braking for Functional Strength Training During Gait.
A Novel Application of Eddy Current Braking for Functional Strength Training During Gait.
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DOI：
10.1007/s10439-016-1553-2
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发表时间：
2016-09
影响因子：
3.8
通讯作者：
Krishnan C
中科院分区：
文献类型：
--
作者：
Washabaugh EP;Claflin ES;Gillespie RB;Krishnan C
在中风或脑瘫等神经损伤患者的康复过程中，功能性力量训练变得越来越受欢迎。通常，使用固定到受试者的远端小腿的缆索机器人或重物来提供行走期间的阻力。然而，不存在可穿戴的并且能够在关节上提供阻力从而允许地面步态训练的设备。在这项研究中，我们创建了一个轻量级和可穿戴设备使用涡流制动提供阻力的膝盖。然后，我们通过让受试者在不同阻力水平的行走任务中佩戴该设备来验证该设备。收集肌电图和运动学，以评估该设备对佩戴者的生物力学影响。我们发现，涡流制动提供的阻力水平适合于腿部肌肉的功能性力量训练，在一个包，既轻便，耐磨。在步态期间在膝关节处施加阻力导致许多测试肌肉的肌肉激活显著增加。短时间的训练，一旦阻力消除，也会产生明显的后遗症。这些结果支持该装置用于步态期间的功能性力量训练的可行性。未来的研究是必要的，以测试该设备在受伤人群中的临床潜力。
Functional strength training is becoming increasingly popular when rehabilitating individuals with neurological injury such as stroke or cerebral palsy. Typically, resistance during walking is provided using cable robots or weights that are secured to the distal shank of the subject. However, there exists no device that is wearable and capable of providing resistance across the joint, allowing over ground gait training. In this study, we created a lightweight and wearable device using eddy current braking to provide resistance to the knee. We then validated the device by having subjects wear it during a walking task through varying resistance levels. Electromyography and kinematics were collected to assess the biomechanical effects of the device on the wearer. We found that eddy current braking provided resistance levels suitable for functional strength training of leg muscles in a package that is both lightweight and wearable. Applying resistive forces at the knee joint during gait resulted in significant increases in muscle activation of many of the muscles tested. A brief period of training also resulted in significant aftereffects once the resistance was removed. These results support the feasibility of the device for functional strength training during gait. Future research is warranted to test the clinical potential of the device in an injured population.