中国卒中杂志 ›› 2018, Vol. 13 ›› Issue (12): 1262-1265.DOI: 10.3969/j.issn.1673-5765.2018.12.006

• 论著 • 上一篇    下一篇

融合声音与运动传感器的步态分析技术的敏感性及信度研究

孔佑琪,刘明勇,王成,周立春,王向东   

  1. 1  100043 北京首都医科大学附属北京朝阳医院(京西院区)神经内科
    2  中国科学院大学计算机与控制学院
    3  中国科学院计算技术研究所移动计算与新型终端北京市重点实验室
  • 收稿日期:2018-07-09 出版日期:2018-12-20 发布日期:2018-12-20
  • 通讯作者: 周立春 zhlc8888@hotmail.com 王向东 xdwang@ict.ac.cn
  • 基金资助:

    北京市自然科学基金(4172058)

Sensibility and Reliability of the Gait Analysis System Based on the Sound and Motion Sensors

  • Received:2018-07-09 Online:2018-12-20 Published:2018-12-20

摘要:

目的 探讨融合声音与运动传感器的步态分析技术的可靠性及敏感性。 

方法 选取47名受试者进行步态分析,其中包括22名偏瘫患者及25名健康受试者,对其运动学参数 进行记录和比较,以检测该步态分析系统的敏感性。由一名评定者对两组受试者分别进行2次步态 测试,采用相关系数进行重测信度比较。 

结果 病例组与对照组受试者的步幅、步速、步频、摆动相时间、支撑相时间、双足支撑时间及踝关节角度等运动学参数比较,差异均具有统计学意义。应用融合声音与运动传感器的步态分析技术2 次测量所得各项步态参数的组内相关系数均较高(0.901~0.996),提示重测信度好。 

结论 融合声音与运动传感器的步态分析技术对于步行能力的评估具有较好的敏感性及稳定性。

文章导读: 步态不对称为偏瘫步态的重要特点,本分析技术对步态的评估具有较好的敏感性及稳定性。

关键词: 步态分析; 偏瘫; 卒中; 信度

Abstract:

Objective To investigate the reliability and sensitivity of the gait analysis system based on the sound and motion sensors. 

Methods 47 subjects were recruited in this gait analysis, including 22 stroke patients with hemiplegia and 25 healthy subjects. The gait parameters of all the subjects were recorded and compared to investigate the sensitivity of this system. The subjects were detected twice by the same doctor, and the intraclass correlation coefficient (ICC) was used to evaluate the reliability of the gait analysis system. 

Results The kinematic parameters (stride length, walking speed, walking frequency, stride period, stance duration, double support duration and the angle of ankle) of the two groups showed significant differences. ICCs values of the gait parameters ranged from 0.901 to 0.996, which suggested a good test-retest reliability. 

Conclusions The gait analysis system based on the sound and motion sensors has a good sensitivity and reliability.

Key words: Gait analysis; Hemiplegia; Stroke; Reliability