功能性踝关节不稳者静态姿势控制中压力中心时域频域特征分析

发布者：唐潇发布时间：2021-10-12浏览次数：10

Time-frequency Analysis of COP in Static Postural Control of Subjects with Functional Ankle Instability

王国栋;毛晓锟;张秋霞;陆阿明;

1:苏州大学体育学院

摘要(Abstract)：

目的:通过分析功能性踝关节不稳(FAI)者静态姿势控制中时域和频域两个方面的特征,探讨功能性踝关节不稳者的姿势控制策略。方法:13名FAI者和13名对照组受试者在测力台上完成30 s睁眼和闭眼赤足单腿站立测试,计算压力中心(COP)信号的时域特征参数与小波分解频段能量,对计算内容进行方差分析。结果:COP时域参数指标,睁眼与闭眼比较,差异均具有统计学意义(P<0.05),FAI组与对照组差异无统计学意义(P>0.05);频域计算结果,睁眼与闭眼比较,COP前后方向信号4个频段能量差异均具有统计学意义(P<0.05),COP左右方向信号仅中频频段差异具有统计学意义(P<0.05);在闭眼条件下,COP前后方向超低频频段能量,FAI组小于对照组(P<0.05)。结论:压力中心频域指标比时域特征参数更敏感,能够检测踝关节不稳对姿势控制的影响;睁眼时,视觉能够很好地补偿踝关节不稳患者姿势控制的不足;在闭眼时,踝关节不稳者的神经系统赋予本体感觉和前庭更多的权重,对姿势控制的综合能力变弱。

关键词(KeyWords)：功能性踝关节不稳;压力中心;姿势控制;小波分解;时域;频域

基金项目(Foundation): 国家自然科学基金项目（11572211）;; 苏州市体育局2020局管课题（TY2020-209）

作者(Author): 王国栋;毛晓锟;张秋霞;陆阿明;

Email:

DOI: 10.16038/j.1000-6710.2021.09.003

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（转自《运动医学杂志09期》）