Dixon Philippe C, Pearsall David J
Department of Kinesiology and Physical Education, McGill University, Montreal, QC, Canada.
J Appl Biomech. 2010 Feb;26(1):17-25. doi: 10.1123/jab.26.1.17.
The purpose of this study was to determine the effect of cross-slope on gait dynamics. Ten young adult males walked barefoot along an inclinable walkway. Ground reaction forces (GRFs), lower-limb joint kinematics, global pelvis orientation, functional leg-length, and joint reaction moments (JRMs) were measured. Statistical analyses revealed differences across limbs (up-slope [US] and down-slope [DS]) and inclinations (level; 0 degrees; and cross-sloped, 6 degrees). Adaptations included increases of nearly 300% in mediolateral GRFs (p < .001), functional shortening the US-limb and elongation of the DS-limb (p < .001), reduced step width (p = .024), asymmetrical changes in sagittal kinematics and JRM, and numerous pronounced coronal plane differences including increased US-hip adduction (and adductor moment) and decreased DS-hip adduction (and adductor moment). Data suggests that modest cross-slopes can induce substantial asymmetrical changes in gait dynamics and may represent a physical obstacle to populations with restricted mobility.
本研究的目的是确定横向坡度对步态动力学的影响。十名年轻成年男性赤足沿着一条可倾斜的人行道行走。测量了地面反作用力（GRF）、下肢关节运动学、整体骨盆方向、功能性腿长和关节反应力矩（JRM）。统计分析揭示了不同肢体（上坡[US]和下坡[DS]）以及不同倾斜度（水平；0度；和横向倾斜，6度）之间的差异。适应性变化包括内外侧GRF增加近300%（p < .001），US侧肢体功能性缩短和DS侧肢体延长（p < .001），步宽减小（p = .024），矢状面运动学和JRM的不对称变化，以及许多明显的冠状面差异，包括US侧髋关节内收增加（以及内收肌力矩）和DS侧髋关节内收减少（以及内收肌力矩）。数据表明，适度的横向坡度会在步态动力学中引起显著的不对称变化，并且可能对行动受限人群构成身体障碍。
