青壮年步态中后肢过障的三维运动分析:足部轨迹随障碍物高度的变化。

Takeaki Kasuga, Hikaru Hagiwara, Yoshiyuki Suzuki, Tomoyuki Asakura
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引用次数: 0

摘要

[目的]分析不同高度障碍物时步态中跨行运动后肢足部运动轨迹的运动学特征。[对象与方法]健康成年男性12名,年龄24.2±0.9岁。参与者完成了11项任务:以正常的步态和以10%的间隔在步态中穿越高度为从地板到膝关节折痕高度的10%到100%的障碍物。参数包括间隙高度、足部运动轨迹、摆动阶段持续时间、步幅、脚尖距离和脚后跟距离。[结果]在穿越条件下,足部运动轨迹随障碍物高度的变化而变化,当障碍物高度≥膝关节高度的30%时,部分被试呈现单峰运动轨迹。趋势试验结果表明,随着障碍物高度的增加,运动轨迹有从双峰到单峰的趋势。【结论】年轻被测试者在步态中后肢的交叉运动表现出足部轨迹的运动学变化,随着障碍物高度的增加从双峰向单峰调整,这可能是应对高障碍物的一种特殊策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Three-dimensional motion analysis of the trailing limb in obstacle crossing during gait in young adults: foot trajectory changes with the height of obstacles.

Three-dimensional motion analysis of the trailing limb in obstacle crossing during gait in young adults: foot trajectory changes with the height of obstacles.

Three-dimensional motion analysis of the trailing limb in obstacle crossing during gait in young adults: foot trajectory changes with the height of obstacles.

[Purpose] We aimed to analyze the kinematic characteristics of the foot trajectory of the trailing limb in a crossing motion during gait when the height of an obstacle is varied. [Participants and Methods] The participants were 12 healthy adult males (age: 24.2 ± 0.9 years). The participants performed 11 tasks: normal gait and crossing an obstacle with a height ranging from 10% to 100% of the height from the floor to the knee joint crease at 10% intervals during gait. The parameters included the clearance height, foot trajectory, swing phase duration, stride, toe distance, and heel distance. [Results] In the crossing condition, the foot trajectory changed with the obstacle height, with some participants showing unimodal trajectories when the obstacle height was ≥30% of the knee joint height. The trend test results show a trend from bimodal to unimodal trajectories with increasing obstacle heights. [Conclusion] The trailing limb of a young participant's crossing motion during gait showed kinematic changes in the foot trajectory, adjusting from bimodal to unimodal as the obstacle height increased, suggesting that this may be a specific strategy for dealing with high obstacles.

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