行走支撑期足弓变化规律与足功能转换机制探究
DOI:
作者:
作者单位:

河北师范大学体育学院

作者简介:

通讯作者:

中图分类号:

基金项目:


A study on the changing Law of foot Arch and the Mechanism of foot function Transformation during Walking support
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    目的:通过对行走步态参数和足弓力学结构的分析,探究行走支撑期足弓功能的转化机制及变化规律。方法:招募8名受试者,同步采集受试者不同步速行走时的步态参数及横、纵弓角度。采用单因素重复测量方差分析检验不同种步速足横、纵弓角度变化及足底受力的特征值差异。结果:行走支撑期纵弓角度、横弓角度及足底受力曲线均存在两个特征值,三条曲线特征值在四种步速变化下存在一致性规律;结果表明,1.4倍和1.2倍最适速度行走时,蹬伸离地阶段时长显著性高于0.8倍最适速度(P<0.05),横弓升高的拐点和第一个受力峰值出现时间早于0.8倍最适步速(P<0.05);1.4倍最适步速相比于0.8倍最适速度横弓在蹬伸离地阶段的最小角度显著性增加(P<0.05),最小角度出现的时间显著性提前(P<0.05);1.2倍最适速度步行时,纵弓第二个峰值出现的位置相比于最适速度提前(P<0.05)。结论:(1)行走时足以纵弓、横弓升降实现功能转化。在行走支撑期,足纵弓和足横弓共同降低完成缓冲,横弓和纵弓升高使后跟抬离地面;离地阶段,纵弓再次降低而足横弓升高,使足增加刚性发力完成蹬伸。(2)在执行蹬伸推进功能时,步速增加会加大蹬伸离地阶段在步态支撑期的时间占比,足横弓和纵弓的变化随蹬伸期提前。(3)足横弓在后跟离地前升高,在蹬伸离地中后期达到最高,其拱形结构有助于纵弓刚性增加及重心在冠状轴的转移,以足横弓升高,纵弓降低实现足由弹性向刚性转化,横弓拱形结构对足部执行蹬伸功能具有重要作用。

    Abstract:

    Objective: To explore the transformation mechanism and change law of foot arch function during walking support through the analysis of walking gait parameters and foot arch mechanical structure. Methods: Eight subjects were recruited, and their gait parameters and transverse and longitudinal bow angles at different walking speeds were collected synchronously. Single factor repeated measurement analysis of variance (ANOVA) was used to test the difference of foot transverse and longitudinal arch angle and plantar force at different walking speeds. Results: During the period of walking support, there were two eigenvalues of longitudinal arch angle, transverse arch angle and plantar stress curve, and the eigenvalues of three curves were consistent under the changes of four kinds of walking speed. The results showed that when walking at 1.4 and 1.2 times the optimum speed, the time of forefoot push off phase was significantly higher than 0.8 times the optimal speed (P < 0.05), and the inflection point and the first peak value of the transverse arch were earlier than 0.8 times the optimal walking speed (P < 0.05). The minimum angle of the horizontal bow at 1.4 times optimal walking speed was significantly higher than that at 0.8 times optimal speed (P < 0.05), and the time at which the minimum angle appeared was significantly earlier (P < 0.05). The position of the second peak of the longitudinal arch was earlier than that of the optimal speed (P < 0.05). The position of the second peak of the longitudinal arch was earlier than that of the optimal speed (P < 0.05). Conclusion: (1) It is sufficient to realize the functional transformation of longitudinal arch and transverse bow when walking. In the walking support period, the longitudinal arch and the transverse arch of the foot together reduce the complete buffer, and the transverse arch and the longitudinal arch rise to lift the heel off the ground; in the off-ground stage, the longitudinal arch decreases again and the transverse arch of the foot rises, which increases the rigidity of the foot to complete the pedal and extension. (2) When carrying out the pedal extension propulsion function, the increase of step speed will increase the proportion of time in the gait support period, and the changes of foot transverse bow and longitudinal bow will advance with the pedal extension period. (3) The transverse arch of the foot rises before the heel leaves the ground and reaches the highest in the middle and later stage of pedaling off the ground. its arch structure contributes to the increase of the rigidity of the longitudinal arch and the transfer of the center of gravity on the coronal axis, so that the transverse arch of the foot rises and the longitudinal arch decreases to realize the transformation of the foot from elasticity to rigidity. The arch structure of the transverse arch plays an important role in the pedal and extension function of the foot.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-05-16
  • 最后修改日期:2021-07-21
  • 录用日期:2021-07-22
  • 在线发布日期:
  • 出版日期: