测试时间和传感器位置对使用车身加速度计推导的站立平衡参数可靠性的影响
Vahid Abdollah1,2, Alireza Noamani1, John Ralston3
1Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada.
Biomedical engineering online
|January 3, 2024
概括
使用可穿戴传感器进行可靠的站立平衡测量需要特定的测试时间和传感器位置. 头部或胸骨传感器在120秒内提供可靠的数据,但十字骨传感器可能需要更长的测试,特别是闭眼时.
科学领域:
- 生物力学 生物力学
- 可穿戴技术可穿戴技术
- 人类平衡评估评估
背景情况:
- 穿戴式传感器对姿势摇摆的测量对实验变量如测试持续时间和传感器位置敏感.
- 这些变量影响质量中心 (COM) 和压力中心 (COP) 游览的幅度和频率属性.
- 调查这些影响对于可靠的余额参数推导至关重要.
研究的目的:
- 调查测试时间,传感器数量和传感器位置对立式平衡参数可靠性的影响.
- 为了确定最佳的测试条件,使用加速度计进行准确的平衡评估.
- 为了确定特定传感器放置和持续时间的潜在限制.
主要方法:
- 十二名健康的志愿者使用五个惯性测量单位 (IMU) 进行了静静的站立测试 (眼睛开/闭).
- IMU被放置在腿部,骨,胸骨和胸过程中.
- 分析了单个和多个传感器组合的数据,测试时间从20秒到120秒不等,以计算基于COM和COP的参数.
主要成果:
- 大多数基于质量中心 (COM) 和压力中心 (COP) 的平衡参数都实现了可靠的临床应用 (ICC ≥ 0.90),最低测试持续时间分别为70秒和110秒.
- 来自部安装的传感器的基于COP的参数显示出不高的可靠性,特别是在闭眼条件下,即使是在120秒的测试中.
- 单头或胸骨传感器在120秒内提供可靠的平衡参数测量.
结论:
- 在120秒的测试时间内,可以使用单个装在头部或胸骨上的传感器可靠地测量站立平衡参数.
- 对于其他传感器位置的可靠性可能需要更长的测试时间,并且取决于特定的测试条件.
- 最佳的传感器放置和测试时间对于准确的临床平衡评估至关重要.
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