The effects of vibrotactile biofeedback training on trunk sway in Parkinson's disease patients
The effects of vibrotactile biofeedback training on trunk sway in Parkinson's disease patients
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DOI：
10.1016/j.parkreldis.2012.05.018
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发表时间：
2012-11-01
影响因子：
4.1
通讯作者：
Bloem, B. R.
中科院分区：
文献类型：
--
作者：
Nanhoe-Mahabier, W.;Allum, J. H.;Bloem, B. R.
背景：帕金森病（PD）患者的姿势不稳定可导致福尔斯跌倒、损伤和生活质量下降。我们调查了PD的平衡是否可以通过为患者提供关于他们自己的躯干摇摆的反馈来改善，作为对自然感觉输入的补充。具体而言，我们研究了人工振动触觉生物反馈对PD.Methods躯干摇摆的影响：20例PD患者被分配到对照组（n = 10）或生物反馈组（n = 10）。首先，所有患者进行两组六个步态任务和六个站立任务（训练前评估）。随后，所有受试者训练六个选定的任务五次（平衡训练）。在训练过程中，反馈组通过头部振动获得躯干摇摆的振动触觉反馈。训练后，两组重复所有12项任务（训练后评估）。在所有的任务，躯干俯仰和滚动运动测量角速度传感器连接到下躯干。结果包括摇摆角和摇摆角速度在滚转和俯仰平面，和task duration.Results：总体而言，反馈组的患者有一个显着更大的减少滚转（P = 0.005）和俯仰（P < 0.001）摇摆角速度。此外，对照组训练后侧倾摆动角增加较多，提示反馈组训练效果更好（P < 0.001）。结论：PD患者使用生物反馈系统进行一次平衡训练，对躯干稳定性有有益的影响。进一步的研究应该检查这些效果是否在更密集的训练后进一步增加，这些效果在训练停止后持续多久，以及观察到的效果是否会延续到非训练任务。(C)2012爱思唯尔有限公司保留所有权利。
Background: Postural instability in Parkinson's disease (PD) can lead to falls, injuries and reduced quality of life. We investigated whether balance in PD can improve by offering patients feedback about their own trunk sway as a supplement to natural sensory inputs. Specifically, we investigated the effect of artificial vibrotactile biofeedback on trunk sway in PD.Methods: Twenty PD patients were assigned to a control group (n = 10) or biofeedback group (n = 10). First, all patients performed two sets of six gait tasks and six stance tasks (pre-training assessment). Subsequently, all subjects trained six selected tasks five times (balance training). During this training, the feedback group received vibrotactile feedback of trunk sway, via vibrations delivered at the head. After training, both groups repeated all twelve tasks (post-training assessment). During all tasks, trunk pitch and roll movements were measured with angular velocity sensors attached to the lower trunk. Outcomes included sway angle and sway angular velocity in the roll and pitch plane, and task duration.Results: Overall, patients in the feedback group had a significantly greater reduction in roll (P = 0.005) and pitch (P < 0.001) sway angular velocity. Moreover, roll sway angle increased more in controls after training, suggesting better training effects in the feedback group (P < 0.001).Conclusions: One session of balance training in PD using a biofeedback system showed beneficial effects on trunk stability. Additional research should examine if these effects increase further after more intensive training, how long these persist after training has stopped, and if the observed effects carry over to non-trained tasks. (C) 2012 Elsevier Ltd. All rights reserved.