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在功能性运动任务中使用耳戴式IMU检测步行事件.

Terry Fawden1, Iwan Vaughan Roberts1, Sarah Goldin2

  • 1Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, UK.

Sensors (Basel, Switzerland)
|June 27, 2025
PubMed
概括

戴在耳朵上的惯性测量单元 (IMU) 在复杂的行走任务中改善了步态事件的检测. 一个新的算法提高了转身和头部运动的准确性,有助于临床评估.

关键词:
耳机可以听到.步态事件检测 步态事件检测惯性传感器是一种无动态传感器.时间参数的时间参数.

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科学领域:

  • 生物力学 生物力学
  • 可穿戴技术是可穿戴的技术.
  • 临床评估 临床评估

背景情况:

  • 复杂的行走任务对于评估前庭,神经和肌肉骨系统的功能至关重要.
  • 可穿戴惯性测量单元 (IMU) 为传统评估方法提供了一个可扩展的,生态有效的替代方案.
  • 戴在耳朵上的IMU为不引人注目的步态分析提供了一种新方法.

研究的目的:

  • 研究耳戴式IMU在复杂的行走任务中识别步态事件的有效性.
  • 将现有的步态事件检测算法的性能与新开发的更强大的算法进行比较.
  • 为了提高步态事件检测的准确性,特别是在涉及头部运动的任务中.

主要方法:

  • 采集了68名不同年龄和运动状况的参与者的步态数据,使用耳戴式IMU.
  • 采用现有的步行事件检测算法和设计用于对横向头部运动的强度的新算法.
  • 分析了两种算法的灵敏度和准确性,用于检测在各种行走任务期间的初始和终端脚接触.

主要成果:

  • 这两种算法在所有测试的行走任务中都表现出高的初始接触灵敏度.
  • 新的算法在转动和行走时实现了卓越的终端接触灵敏度,并以水平的头转向行走.
  • 改进的算法提供了更准确的立场和摆动时间估计,特别是在具有挑战性的条件下.

结论:

  • 使用耳戴式IMU开发的算法显著提高了复杂行走的步态事件检测准确度.
  • 这一进步有助于对步态和运动障碍进行更详细的临床评估.
  • 这些发现支持使用耳戴式IMU用于改善临床和日常生活环境中的步态分析.