《中国康复理论与实践》 ›› 2021, Vol. 27 ›› Issue (7): 745-750.doi: 10.3969/j.issn.1006-9771.2021.07.001

• 专题 运动与平衡功能研究 • 上一篇    下一篇

跨越水平障碍物时的步态特征

张峻霞1,2(),邵洋洋1,2,王喆豪1,2,杨芳1,2   

  1. 1.天津科技大学机械工程学院,天津市 300222
    2.天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津市 300222
  • 收稿日期:2020-07-06 修回日期:2021-06-11 出版日期:2021-07-25 发布日期:2021-07-28
  • 通讯作者: 张峻霞 E-mail:zjx@tust.edu.cn
  • 作者简介:张峻霞(1968-),女,汉族,山西原平市人,教授,博士生导师,主要研究方向:人机工程与人机交互,智能康复机器人。
  • 基金资助:
    国家自然科学基金项目(50975204)

Gait Characteristics during Horizontal Obstacle Crossing

ZHANG Jun-xia1,2(),SHAO Yang-yang1,2,WANG Zhe-hao1,2,YANG Fang1,2   

  1. 1. College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300222, China
    2. Tianjin Key Laboratory of Integrated Design and Online Monitoring for Light Industry & Food Machinery and Equipment, Tianjin 300222, China
  • Received:2020-07-06 Revised:2021-06-11 Published:2021-07-25 Online:2021-07-28
  • Contact: ZHANG Jun-xia E-mail:zjx@tust.edu.cn
  • Supported by:
    National Natural Science Foundation of China(50975204)

摘要:

目的 观察水平跨障肢体动作相关的步态特征,以优化跨障策略,降低跌倒风险。

方法 2019年9月,招募健康青年男性受试者15名,在实验路径中使用优势肢体和非优势肢体完成水平跨障任务,障碍宽0 cm、45 cm、55 cm和65 cm。使用红外摄像和生物力学测力台采集步态参数。

结果 随着障碍物宽度增加,受试者步速更快,足跟到障碍物的距离(HOD)、足趾到障碍物的距离(TOD)更小,步幅更大,步长和跟随肢体的足趾间隙(TCt)更长。非优势肢体作为跨越肢体时,跟随肢体跨障速度较慢,TCt、步宽、步长和HOD较长。

结论 在水平跨障过程中,跌倒风险随着障碍物宽度的增加而增大;为降低跌倒风险,建议以非优势肢体作为跨越肢体,并提高步幅、步长和TCt。

关键词: 跨越障碍, 跨越肢体, 优势肢体, 跌倒, 步态

Abstract:

Objective To observe the gait characteristics related to the horizontal obstacle crossing, to optimize obstacle crossing strategy to reduce the risk of falling.

Methods A total of 15 healthy young men were recruited in September, 2019, to complete horizontal obstacle crossing tasks (0 cm, 45 cm, 55 cm and 65 cm wide), with dominant and non-dominant limbs first on a specific experimental path. Gait parameters were collected with infrared camera and biomechanics force plate.

Results As the width of the obstacle increasing, the speed, stride length, step length and toe clearance of trailing limb (TCt) increased; while the heel-to-obstacle distance (HOD) and toe-to-obstacle distance (TOD) decreased. As the non-dominant limb crossing first, the speed of following step was slower, and the TCt, step width, step length and HOD increased.

Conclusion The risk of falling increases with the width of the obstacle during horizontal obstacle crossing. It is recommended to use non-dominant limbs leading crossing, and increase stride length, step length and TCt to reduce the risk of falling.

Key words: obstacle crossing, leading limb, dominant limb, fall, gait

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