Gait Symmetry Can Reduce Dependence on the Intact Limb during Walking with Constraint of Unilateral Metatarsophalangeal Joints.
Gait Symmetry Can Reduce Dependence on the Intact Limb during Walking with Constraint of Unilateral Metatarsophalangeal Joints.
复制标题
步态对称性可以减少步行过程中对单侧跖趾关节约束的完整肢体的依赖。
DOI：
10.1109/embc.2018.8512793
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Wu,Ming
中科院分区：
文献类型：
--
作者：
Liu,Yixiang;Zang,Xizhe;Zhang,Niansong;Wu,Ming
我们以前的研究表明，健康受试者在单侧跖趾关节（MTP）受限时表现出不对称的步行步态。他们更依赖于他们的完整肢体来补偿他们受限肢体的缺失功能，这可能导致平衡不良，代谢成本增加，以及福尔斯的风险增加。我们研究了受试者如何反应，如果步态不对称的立场时间改善使用分裂带跑步机。12名健康受试者被要求在分裂带跑步机上以舒适和快速的速度行走，他们的单侧MTP关节受到限制。行走试验在两种条件下进行，即，系带行走（TBW，两条带以相同的速度移动）和分带行走（SBW，约束腿上的带的速度适当地慢于对侧腿的速度）。采集步行过程中的地面反作用力（GRF）和肌电图（EMG）数据。结果表明，与TBW相比，SBW在快速运动时，限制足的GRF和冲动显著增加，而完整下肢的内侧腓肠肌和比目鱼肌的激活显著减少，这表明改善站立时间的对称性可能会减少单侧MTP关节限制的人类对完整下肢的依赖性。
Our previous research showed that healthy subjects exhibited asymmetrical walking gait when their unilateral metatarsophalangeal (MTP) joints were constrained. They relied more on their intact limb for the compensation of missing functions of their constrained limb, which may result in poor balance, increased metabolic cost, and higher risks of falls. We examined how subjects would respond if gait asymmetry in stance time was improved using a split-belt treadmill. Twelve healthy subjects were instructed to walk on a split-belt treadmill at comfortable and fast speeds with their unilateral MTP joints constrained. The walking trials were performed in two conditions, i.e., tied-belt walking (TBW, both belts moved at the same speed), and split-belt walking (SBW, the speed of the belt on the constrained leg was appropriately slower than that of the contralateral leg). The ground reaction forces (GRF) and electromyography (EMG) data during walking were collected. Results showed that the GRF and impulses on the constrained foot at fast speed SBW significantly increased, compared with TBW, and the activation of medial gastrocnemius and soleus of the intact lower limb decreased significantly, which suggest that improved symmetry in stance time may reduce dependence on the intact limb for humans with the constraint of unilateral MTP joints.