Walking speed changes in response to novel user-driven treadmill control
Walking speed changes in response to novel user-driven treadmill control
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DOI：
10.1016/j.jbiomech.2018.07.035
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发表时间：
2018-09-10
影响因子：
2.4
通讯作者：
Higginson, Jill S.
中科院分区：
文献类型：
--
作者：
Ray, Nicole T.;Knarr, Brian A.;Higginson, Jill S.
在康复步态训练项目中实施用户驱动的跑步机控制可能是加强运动学习和改善功能表现的有效手段。这项研究旨在确定用户驱动的跑步机控制方案对健康成年人的步行速度、前地面反作用力(AGRF)和后肢角度(TLA)的影响。23名参与者完成了一项10米的地面步行任务，以测量他们的地面自选(SS)步行速度。然后，他们在仪表化的分体式跑步机上以他们的SS和最舒适的步行速度行走，在固定速度和用户驱动的控制模式下。用户驱动的跑步机控制器结合惯性力、步态参数和基于位置的控制来实时调整跑步机皮带的速度。使用配对t检验比较不同测试条件下的步行速度、峰值AGRF和TLA(α=0.05)。与固定速度模式相比，受试者在用户驱动模式下选择更快的站姿和快走速度(p>；0.05)。用户引导实验中的地面SS步行速度与SS步行速度之间无显著差异(p<；0.05)。AGRF和TLA的变化主要是由步行速度的变化引起的，而不是跑步机控制器的变化。我们的发现表明，用户驱动的跑步机控制器允许参与者选择比他们在固定速度跑步机上选择的速度快，并与他们的地面速度相似的步行速度。由于用户驱动的跑步机行走增加了认知活动和自然移动性，这些结果表明用户驱动的跑步机控制将是目前康复步态训练计划的有益补充。(C)2018爱思唯尔有限公司。保留所有权利。
Implementing user-driven treadmill control in gait training programs for rehabilitation may be an effective means of enhancing motor learning and improving functional performance. This study aimed to determine the effect of a user-driven treadmill control scheme on walking speeds, anterior ground reaction forces (AGRF), and trailing limb angles (TLA) of healthy adults. Twenty-three participants completed a 10-m overground walking task to measure their overground self-selected (SS) walking speeds. Then, they walked at their SS and fastest comfortable walking speeds on an instrumented split-belt treadmill in its fixed speed and user-driven control modes. The user-driven treadmill controller combined inertial-force, gait parameter, and position based control to adjust the treadmill belt speed in real time. Walking speeds, peak AGRF, and TLA were compared among test conditions using paired t-tests (alpha = 0.05). Participants chose significantly faster SS and fast walking speeds in the user-driven mode than the fixed speed mode (p > 0.05). There was no significant difference between the overground SS walking speed and the SS speed from the user-driven trials (p < 0.05). Changes in AGRF and TLA were caused primarily by changes in walking speed, not the treadmill controller. Our findings show the user-driven treadmill controller allowed participants to select walking speeds faster than their chosen speeds on the fixed speed treadmill and similar to their overground speeds. Since user-driven treadmill walking increases cognitive activity and natural mobility, these results suggest user-driven treadmill control would be a beneficial addition to current gait training programs for rehabilitation. (C) 2018 Elsevier Ltd. All rights reserved.