| 腰部竖脊肌疲劳运动过程中表面肌电信号线性和非线性指标的变化 |
| |
| 引用本文： | 王翔.腰部竖脊肌疲劳运动过程中表面肌电信号线性和非线性指标的变化[J].浙江体育科学,2008,30(6):104-106. |
| |
| 作者姓名： | 王翔 |
| |
| 作者单位： | 韩山师范学院体育系,广东,潮州,521041 |
| |
| 摘 要： | 通过等长背伸运动负荷诱发腰部竖脊肌疲劳并记录全程表面肌电（sEMG）信号,分别以快速傅立叶变换（FFT）计算平均功率频率MPF和非线性RQA方法计算确定性线段百分数（?T）。结果显示,MPF随着肌肉疲劳的发展而逐渐下降,而?T呈现反向变化趋势,提示肌肉疲劳时的sEMG信号规律性在增强。?T的变异系数CV比MPF的小,说明?T作为腰部肌肉功能状态的评价指标具有独特的优势。
|
| 关 键 词： | 腰部肌肉 表面肌电 平均功率频率 定量递归分析 |
The Changes of Linear and Non-linear Qarameters of Surface Electromyogram in Lumbar Spinal Muscle during Fatiguing Progress |
| |
| WANG Xiang.The Changes of Linear and Non-linear Qarameters of Surface Electromyogram in Lumbar Spinal Muscle during Fatiguing Progress[J].Zhejiang Sport Science,2008,30(6):104-106. |
| |
| Authors: | WANG Xiang |
| |
| Institution: | WANG Xiang(PE Department,Hanshan Normal University,Chaozhou 521041,China) |
| |
| Abstract: | The surface electromyogram(sEMG) signal of lumbar spinal muscle were collected during isometric back extension.Mean power frequency(MPF) and %determinism(%DET) were calculated with fast fourier transform algorithm(FFT) and non-linear recurrence quantification analysis(RQA) respectively.The results showed that MPF decreased as the muscle fatigue developed.But the %DET changed inversely.These suggested an increase in signal regularity when the muscle fatigued.The coefficient variation(CV) of %DET was smaller ... |
| |
| Keywords: | lumbar muscle surface electromyogram mean power frequency recurrence quantification analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
