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首页> 外文期刊>Gait & posture >Adaptation of postural responses during different standing perturbation conditions in individuals with incomplete spinal cord injury.
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Adaptation of postural responses during different standing perturbation conditions in individuals with incomplete spinal cord injury.

机译：脊髓不完全损伤个体在不同站立状态下的姿势反应适应性。

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Incomplete spinal cord injury (ISCI) frequently disrupts afferent and efferent neural pathways underlying co-requisite voluntary and involuntary muscle activation required for functional standing and walking. To understand involuntary postural control mechanisms necessary for standing, we compared eight individuals with ISCI to eight controls with no impairment. The aim of this study was to investigate anticipatory and reactive balance responses in individuals with ISCI. The ability to adapt to changes in balance conditions was assessed by monitoring automatic postural responses (APRs) during a series of expected and unexpected changes in perturbation direction (backward translation versus toes-up rotation). Both groups were able to modulate appropriately within one or two trials following an unexpected change in condition. Onset times of anterior tibialis and medial gastrocnemius (MG) were significantly slower in the ISCI group during expected and unexpected conditions. These findings demonstrate thatpersons with mild to moderate lower extremity sensorimotor deficits are able to generate and adapt APRs to a rapid and unexpected contextual change during a simple standing balance task.
机译：脊髓不完全损伤（ISCI）经常干扰功能站立和行走所需的必要的自愿性和非自愿性肌肉激活所依据的传入和传出神经通路。为了了解站立所需的非自愿姿势控制机制，我们将八名患有ISCI的患者与八名无损伤的对照进行了比较。这项研究的目的是调查ISCI患者的预期和反应性平衡反应。通过在一系列预期的和意外的摄动方向变化（向后平移与脚趾抬起旋转）期间监视自动姿势响应（APR），评估了适应平衡条件变化的能力。两组都能够在状况意外变化后的一两次试验中进行适当调节。在预期和意外情况下，ISCI组胫骨前和腓肠肌内侧（MG）的发作时间明显减慢。这些发现表明，轻度至中度下肢感觉运动缺陷的人能够在简单的站立平衡任务中产生并适应APR，以适应快速和意想不到的背景变化。

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