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首页> 外文期刊>Biomedical Engineering: Applications, Basis and Communications >BIOMECHANICAL STRATEGIES AND THE LOADS IN THE LOWER LIMBS DURING DOWNHILL WALKING WITH DIFFERENT INCLINATION ANGLES
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BIOMECHANICAL STRATEGIES AND THE LOADS IN THE LOWER LIMBS DURING DOWNHILL WALKING WITH DIFFERENT INCLINATION ANGLES

机译：下倾角行走过程中下倾角变化时下肢的生物力学策略和载荷

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摘要

Downhill walking places greater demands on the lower limb joints with a greater risk of falling when compared with level walking. The current study aimed to quantify the 3D joint kinematics and kinetics of the locomotor system, and their interactions with the trunk during downhill walking. Fifteen young adults walked at a self-selected pace on a 3-m walkway with slopes of 0°, 5°, 10°, and 15° while their kinematic and kinetic data were measured. A complete 3D biomechanical analysis of the locomotor system was performed on these data. The results showed that with increasing downhill angles young healthy adults increased the posterior tilt of the pelvis and lateral trunk bending towards the stance limb, as well as the peak dorsiflexor and extensor moments at the ankle and knee, respectively, during the first half of the stance phase (SP), and increased the peak moments at the hip during the second half of the SP. The associated joint forces also varied with increasing slopes over the SP. When the overall mechanical demands were considered over the SP, the angular extensor and plantarflexor impulses at the knee and ankle were found to increase linearly with increasing slopes. The current results may serve as baseline data for future studies on downhill walking, and for clinical applications in various patient groups.
机译：与水平行走相比，下坡行走对下肢关节的要求更高，跌倒的风险更大。当前的研究旨在量化运动系统的3D关节运动学和动力学，以及它们在下坡行走过程中与躯干的相互作用。 15名年轻成年人在3 m的人行道上以自行选择的速度行走，坡度为0°，5°，10°和15°，同时测量了运动学和动力学数据。根据这些数据对运动系统进行了完整的3D生物力学分析。结果表明，随着下坡角度的增加，年轻健康的成年人在上半部的上半部分别增加了骨盆的后倾斜度和向躯干肢体弯曲的侧躯干，以及踝部和膝盖的背屈和伸肌力矩峰值。站立阶段（SP），并在SP的后半段增加了髋部的峰值力矩。相关的联合力也随着SP上斜率的增加而变化。当考虑整个SP上的总体机械需求时，发现在膝盖和脚踝处的角伸肌和足屈肌冲动会随着坡度的增加而线性增加。当前的结果可以作为基线数据，用于以后的下坡步行研究以及各种患者群体的临床应用。

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