Department of Physical Education and Kinesiology, Brock University, 500 Glenridge Avenue, St. Catharines, ON, Canada L2S 3A1.
Gait Posture. 2010 May;32(1):62-6. doi: 10.1016/j.gaitpost.2010.03.009. Epub 2010 May 1.
Biofeedback has been shown to improve balance in a number of different populations. As certain clinical populations have a tendency to fall in one direction, the provision of biofeedback in the impaired direction may improve balance in that direction but not in others. The purpose of this study was to determine the effects of uni-directional biofeedback on stance tasks in healthy young adults. Trunk sway was measured in 40 healthy young adults as they performed nine stance tasks with and without biofeedback. Participants received biofeedback about their trunk sway in either the anterior-posterior (AP) or medial-lateral (ML) direction using a multi-modal head-mounted biofeedback device. An overall effect of reduced sway angle and increased sway angular velocity was noted with biofeedback. Some of the effects of biofeedback were dependent on the direction in which biofeedback was given and whether vision was present during the stance task. These effects were strongest in the pitch direction for AP biofeedback with vision present. This study showed direction specific effects of biofeedback are greatest in the sagittal plane. These results are important clinically as the use of biofeedback during stance tasks, similar to gait tasks, appears to work best in the AP direction when vision is present.
生物反馈已被证明可以改善许多不同人群的平衡。由于某些临床人群有向某个特定方向跌倒的倾向，因此在受损方向提供生物反馈可能会改善该方向的平衡，但不会改善其他方向的平衡。本研究的目的是确定单向生物反馈对健康年轻成年人站立任务的影响。在 40 名健康的年轻成年人进行九项站立任务时，使用多模态头戴式生物反馈设备测量他们的躯干摆动。参与者在前-后（AP）或内-外（ML）方向收到关于其躯干摆动的生物反馈。使用生物反馈时，注意到摆动角度减小和摆动角速度增加的总体效果。生物反馈的一些效果取决于生物反馈的方向以及在站立任务期间是否存在视觉。在有视觉的情况下，AP 生物反馈的俯仰方向的效果最强。本研究表明，生物反馈的定向效应在矢状面最大。这些结果在临床上很重要，因为在存在视觉的情况下，类似于步态任务，在站立任务期间使用生物反馈，在 AP 方向效果最佳。
