AN INTEGRATED BIOMECHANICAL ANALYSIS OF NORMAL STAIR ASCENT AND DESCENT
AN INTEGRATED BIOMECHANICAL ANALYSIS OF NORMAL STAIR ASCENT AND DESCENT
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DOI：
10.1016/0021-9290(88)90282-5
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发表时间：
1988-01-01
影响因子：
2.4
通讯作者：
WINTER, DA
中科院分区：
文献类型：
--
作者：
MCFADYEN, BJ;WINTER, DA
三个正常的男性相似的身高和体重上升和下降的五步楼梯的上升高度为22厘米和踏板的28厘米。在每种模式下，收集第二步至第四步的EMG、测力板和电影数据。将运动学和动力学分析与EMG相结合，以解释正常楼梯行走的力学。从一个步骤到下一个步骤的运动涉及同时提升和身体的水平平移，每个步幅都显示出特定的进展阶段。在两种模式下，膝关节周围的伸肌与踝关节跖屈肌一起在从一个步骤到下一个步骤的过程中起主导作用。总下肢伸肌模式，称为支持时刻，是高度相关的科目和水平行走。还确定了运动模式的受试者内和受试者间变异性。在每种模式的24次试验中，髋关节的变异性最大，而踝关节和膝关节的刻板动力学模式出现在所有受试者中。
Three normal males of similar height and weight ascended and descended a five step staircase with a riser height of 22 cm and a tread of 28 cm. EMG, force plate and cine data were collected for the stride over the second to fourth step during each mode. Kinematic and kinetic analyses were integrated with EMG to yield an interpretation of the mechanics of normal stair walking. Movement from one step to the next involved simultaneous lifting and horizontal translation of the body, and each stride showed specific phases for progression. The extensor muscles about the knee played a dominant role in the progress from one step to the next in both modes coupled with the ankle plantar flexors. The total lower limb extensor pattern, called the support moment, was highly correlated between subjects and to level walking. Intra- and inter-subject variability of the motor patterns were also determined. The greatest variability was seen at the hip, while stereotypic kinetic patterns emerged at the ankle and knee for all subjects across the 24 trials of each mode.