Association between trunk acceleration during walking and clinically assessed balance in patients with stroke
Association between trunk acceleration during walking and clinically assessed balance in patients with stroke
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DOI：
10.3233/nre-172171
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发表时间：
2017-01-01
影响因子：
2
通讯作者：
Suehiro, Tadanobu
中科院分区：
文献类型：
--
作者：
Osaka, Hiroshi;Shinkoda, Koichi;Suehiro, Tadanobu
背景：加速度计提供有关平衡和步态的信息，但它们很少用于中风患者的临床设置。临床上，平衡性是通过简单的测试来评估的，但它们与中风后加速度测量结果的关系尚不清楚。目的：研究脑卒中患者由躯干加速度计算的加速度测量评估步态指数与Timed Up and Go （TUG）和Berg Balance Scale （BBS）测试结果的关系。方法：29例脑卒中患者在行走时使用三轴加速度计完成TUG、BBS和躯干加速度的评估。基于躯干加速度，分别计算反映步态波动、规律性和对称性的均方根（RMS）、步幅规律性（SR）和步距对称性（SS）。这些是在垂直（VT），前后和中外侧方向上计算的。进行多元线性回归分析以确定这些步态指标是否独立影响TUG和BBS结果。结果：VT-RMS和VT-SS是TUG的显著决定因素，VT-SS、VT-RMS和VT-SR是BBS的显著决定因素。结论：本研究提示躯干加速度计算出的与平衡相关的步态指标均为VT方向的步态指标。这些可能有助于评估卒中患者的动态步态平衡。
BACKGROUND: Accelerometers provide information regarding balance and gait, but they are rarely used in clinical settings for stroke patients. Clinically, balance is assessed with simple tests, but their relationships with accelerometry results after stroke are unknown.OBJECTIVE: We examined the relationship between accelerometry-assessed gait indices calculated from trunk acceleration and results of the Timed Up and Go (TUG) and Berg Balance Scale (BBS) tests in stroke patients.METHODS: Twenty-nine stroke patients completed assessments with the TUG, BBS, and trunk acceleration during walking using a tri-axial accelerometer. The root mean square (RMS), stride regularity (SR), and step symmetry (SS), which indicate gait fluctuations, regularity, and symmetry, respectively, were calculated based on trunk acceleration. These were calculated in the vertical (VT), anteroposterior, and mediolateral directions. A multiple linear regression analysis was performed to determine whether these gait indices contributed independently to TUG and BBS results.RESULTS: VT-RMS and VT-SS were significant determinants of TUG, and VT-SS, VT-RMS, and VT-SR were significant determinants of BBS.CONCLUSIONS: This study suggested that the gait indices calculated from trunk acceleration that were relevant to balance were those in the VT direction. These may be useful for evaluating dynamic gait balance in patients with stroke.