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등장성운동 시 근전도 신호의 중앙주파수 분석을 통한 근피로지수 검출에 관한 연구

Other Titles
 The Study of Muscle Fatique Index Searching in terms of Median Frequency Analysis of EMG Signals during Isotonic Exercise 
Authors
 홍수용  ;  이성호  ;  조상현  ;  윤형로 
Citation
 Journal of Biomedical Engineering Research (의공학회지), Vol.24(3) : 175-181, 2003 
Journal Title
Journal of Biomedical Engineering Research(의공학회지)
ISSN
 1229-0807 
Issue Date
2003
MeSH
Muscle fatigue ; Frequency analysis ; Median frequency ; EMG
Keywords
Muscle fatigue ; Frequency analysis ; Median frequency ; EMG
Abstract
Studies of muscle fatigue have mostly been checked under isometric exercise. However EMG signals from isotonic exercise generate uncontrollable noise, so there were difficulties in gathering reliable median frequency and muscle fatigue index if frequency analysis was equally applied in isometric exercise. This study tried to compare the differences of muscle fatigue determinant variables in terms of median frequency searching methods of EMG signal, which was estimated in isotonic exercise. To accomplish this, we determined median frequency by using different FFT intervals and overlapping ration of consecutive FFT sections under the same EMG signal, and then searched for a linear regression line, and compared initial median frequency, slope, and muscle fatigue index which were variables under the linear regression line. In result of comparison, initial median frequency was more elevated as FFT exercise interval became larger. The slope of the linear regression line showed distinguishable decreasing tendency as FFT intervals were larger and overlapping sections were smaller. Significant tendency of muscle fatigue index in FFT interval was shown by high muscle fatigue index in specific FFT intervals.
Files in This Item:
T200300801.pdf Download
Appears in Collections:
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Lee, Sung Ho(이성호)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/113192
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