Response of able-bodied persons to changes in shoe rocker radius during walking: changes in ankle kinematics to maintain a consistent roll-over shape.
Response of able-bodied persons to changes in shoe rocker radius during walking: changes in ankle kinematics to maintain a consistent roll-over shape.
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DOI：
10.1016/j.jbiomech.2010.04.036
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发表时间：
2010-08-26
影响因子：
2.4
通讯作者：
Hansen, Andrew H.
中科院分区：
文献类型：
--
作者：
Wang, Charles C.;Hansen, Andrew H.
最近的研究已经确定了健全的水平地面行走的一个看似一致的特征，称为翻转形状，这是下肢系统在行走期间（步态周期的前半部分）在脚跟接触和对侧脚跟接触之间符合的有效摇杆（凸轮）形状。已经发现，翻转形状在很大程度上不受行走速度、负重和鞋跟高度变化的影响。然而，从以前的研究中还不清楚人们是否在控制他们的下肢系统以保持一致的翻转形状，或者这一发现是否是他们试图在步态周期的前半部分保持踝关节运动学模式相似的副产品。我们测量了11名健全受试者在不同半径的摇椅鞋上行走时的踝足翻转形状和踝关节运动学。我们假设在单支撑期间踝关节屈曲模式将改变以保持类似的翻转形状。我们还假设，随着摇杆鞋半径的减小，踝关节屈曲在单一支撑结束和开始之间的差异将减小。我们的研究结果支持这些假设。在不同的摇杆鞋半径行走过程中，踝关节运动学发生了显著变化（p < 0.001），而踝-足翻转形状半径（p = 0.146）和前后位置（p = 0.132）没有受到显著影响。这项研究的结果对踝足假肢、矫形器、步行石膏/靴子和摇椅鞋的设计者有直接的影响。这一结果也可能与研究人类运动控制的研究人员有关。
Recent studies have determined a seemingly consistent feature of able-bodied level ground walking termed the roll-over shape, which is the effective rocker (cam) shape that the lower limb system conforms to between heel contact and contralateral heel contact during walking (first half of the gait cycle). The roll-over shape has been found to be largely unaffected by changes in walking speed, load carriage, and shoe heel height. However, it is unclear from previous studies whether persons are controlling their lower limb systems to maintain a consistent roll-over shape or whether this finding is a byproduct of their attempt to keep ankle kinematic patterns similar during the first half of the gait cycle. We measured the ankle-foot roll-over shapes and ankle kinematics of eleven able-bodied subjects while walking on rocker shoes of different radii. We hypothesized that the ankle flexion patterns during single support would change to maintain a similar roll-over shape. We also hypothesized that with decreasing rocker shoe radii, the difference in ankle flexion between the end and beginning of single support would decrease. Our results supported these hypotheses. Ankle kinematics were changed significantly during walking with the different rocker shoe radii (p < 0.001), while ankle-foot roll-over shape radii (p = 0.146) and fore-aft position (p = 0.132) were not significantly affected. The results of this study have direct implications for designers of ankle-foot prostheses, orthoses, walking casts/boots, and rocker shoes. The results may also be relevant to researchers studying control of human movements.
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DOI：
10.1682/jrrd.2003.06.0098
发表时间：
2004-07-01
影响因子：
--
作者：
Hansen, AH;Childress, DS
通讯作者：
Childress, DS
影响因子：
3
作者：
Saha, Devjani;Gard, Steven;Ondra, Stephen
通讯作者：
Ondra, Stephen
DOI：
10.1682/jrrd.2006.08.0090
发表时间：
2007-01-01
影响因子：
--
作者：
Fatone, Stefania;Hansen, Andrew H.
通讯作者：
Hansen, Andrew H.
影响因子：
9.2
作者：
MCGEER, T
通讯作者：
MCGEER, T
影响因子：
2.1
作者：
Gard, SA;Miff, SC;Kuo, AD
通讯作者：
Kuo, AD