Investigation of contralateral leg response to unilateral stiffness perturbations using a novel device
Investigation of contralateral leg response to unilateral stiffness perturbations using a novel device
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使用新型装置研究对侧腿对单侧刚度扰动的反应
DOI：
10.1109/iros.2014.6942841
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
P. Artemiadis
中科院分区：
文献类型：
--
作者：
J. Skidmore;Andrew R. Barkan;P. Artemiadis
“Anthropos”一词的词源是希腊语，意思是人类，包括人类的定义特征之一，即直立行走的能力。运动是人类最重要的功能之一，为生存，进步和互动服务。由足部与行走表面的相互作用产生的力刺激是人类步态的重要部分。虽然已经有许多研究试图破译步态的负载反馈机制，但需要开发一种能够推进研究并提供新功能的通用系统。此外，在步行过程中的腿间协调的负载反馈的作用仍然没有得到很好的理解。在本文中，我们提出了一系列的研究，试图阐明腿间协调的负载反馈的作用，使用一种新的系统，称为可变刚度跑步机（VST）。该装置能够通过真实的实时调节行走表面刚度来控制负载反馈刺激。我们首先介绍了VST的主要功能，重点是刚度的实时闭环控制。利用健康受试者一条腿上跑步机刚度的扰动，我们研究了体重支撑步态中的腿间协调机制。结果表明，同侧刚度扰动，影响对侧（未扰动）的腿在体重支持步态，而他们的效果是依赖于所引起的刚度扰动的时间。所开发的系统和实验协议是独特的有用的步态研究，可以提高我们对步态的理解，并创造新的途径的步态分析，步行机器人和步态康复的研究。
The etymology of the word “Anthropos”, the Greek word for Human, includes one of the defining characteristics of human beings, which is the ability to stand upright and walk. Locomotion is one of the human's most important functions that serve survival, progress and interaction. The force stimulus generated by the interaction of the foot with the walking surface is a vital part of human gait. Although there have been many studies trying to decipher the load feedback mechanisms of gait, there is a need for the development of a versatile system that can advance research and provide new functionality. Moreover, the role of the load feedback in inter-leg coordination during walking is still not well understood. In this paper, we present a series of studies that attempt to shed light on the role of load feedback on inter-leg coordination using a novel system, called Variable Stiffness Treadmill (VST). The device is capable of controlling load feedback stimulus by regulating the walking surface stiffness in real time. We first present the main functionality of the VST, focusing on the real-time closed-loop control of stiffness. Using perturbations of the treadmill stiffness on one leg of healthy subjects, we investigate the inter-leg coordination mechanisms, in body-weight-supported gait. Results show that ipsilateral stiffness perturbations, affect the contralateral (unperturbed) leg in body-weight-supported gait, while their effect is dependent on the timing of the induced stiffness perturbations. The developed system and experimental protocols are uniquely useful for gait research, can improve our understanding of gait, and create new avenues of research on gait analysis, walking robots and gait rehabilitation.
影响因子：
3.3
作者：
Browning, RC;Baker, EA;Kram, R
通讯作者：
Kram, R
影响因子：
2.4
作者：
Ferris, DP;Liang, KL;Farley, CT
通讯作者：
Farley, CT