Comparison of motor control deficits during treadmill and overground walking poststroke.
Comparison of motor control deficits during treadmill and overground walking poststroke.
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DOI：
10.1177/1545968311407515
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发表时间：
2011-10
影响因子：
4.2
通讯作者：
Neptune RR
中科院分区：
文献类型：
--
作者：
Kautz SA;Bowden MG;Clark DJ;Neptune RR
力传感分离带式跑步机（TM）提供了一种替代传统的地上（OG）设置，并允许分析行走的生物力学和电机控制的新途径。然而，与步行OG相比，TM上的步行控制可能不同。比较中风后轻偏瘫患者TM和OG以自选和最快舒适速度行走时的运动控制的时空、运动学和基于EMG的测量。患有慢性轻偏瘫的个体（56）和年龄相似的健康个体（17）在装有仪器的人行道上行走，并在装有仪器的分裂带TM上行走; EMG的16个通道记录了双侧肌肉活动，12个摄像头的运动捕捉系统收集了双侧3D运动学。作者应用非负矩阵分解（NNMF）算法来检查运动控制的潜在模式。TM与OG对照组的自选行走模式不同：速度下降，步幅减少，站立百分比增加，双支撑百分比增加。中风后，反应相似，但节奏也下降，步长不对称增加。运动模式相似，除了与较慢的步行速度。NNMF在2种环境中表现出相似的EMG方差。健康人和中风后的人在TM上以不同的步态参数行走。虽然运动控制的措施之间的2个环境，TM诱导步长不对称的30%的参与者（60%的人采取了更长的麻痹步骤）。因此，TM步行是检测运动控制缺陷的有效方法。
Force-sensing split-belt treadmills (TMs) provide an alternative to the conventional overground (OG) setting and allow new avenues for analyzing the biomechanics and motor control of walking. However, walking control may differ on a TM compared with walking OG. To compare spatiotemporal, kinematic, and EMG-based measures of motor control between TM and OG walking at self-selected and fastest comfortable speeds in persons with poststroke hemiparesis. Individuals with chronic hemiparesis (56) and similarly aged healthy individuals (17) walked over an instrumented walkway and on an instrumented split-belt TM; 16 channels of EMG recorded bilateral muscle activity, and a 12-camera motion capture system collected bilateral 3D kinematics. The authors applied a nonnegative matrix factorization (NNMF) algorithm to examine the underlying patterns of motor control. Self-selected walking patterns differed on the TM versus OG in controls: speed decreased, stride length decreased, stance percentage increased, and double-support percentage increased. Poststroke, responses were similar, but cadence also decreased, and step length asymmetry increased. Kinematic patterns were similar except those associated with slower walking speeds. NNMF demonstrated similar EMG variance in the 2 environments. Persons, both healthy and poststroke, walk with different gait parameters on the TM. Although measures of motor control were mostly similar between the 2 environments, the TM induced step length asymmetry in 30% of participants (60% of whom took longer paretic steps). TM walking, therefore, is a valid method for detecting motor control deficits.
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影响因子：
8.3
作者：
Bowden, MG;Balasubramanian, CK;Kautz, SA
通讯作者：
Kautz, SA
影响因子：
3.3
作者：
Lee, Song Joo;Hidler, Joseph
通讯作者：
Hidler, Joseph
影响因子：
2.4
作者：
Mulroy, S;Gronley, J;Perry, J
通讯作者：
Perry, J
影响因子：
3.3
作者：
Masani, K;Kouzaki, M;Fukunaga, T
通讯作者：
Fukunaga, T
影响因子：
4.2
作者：
Harris-Love, ML;Forrester, LW;Smith, GV
通讯作者：
Smith, GV