근전도를 이용한 Sorensen 검사시 성인남녀등 근육의 근피로도 분석
Spectral Electromyographic Fatigue Analysis of Back Muscles in Healthy Adult Men and Women During Sorensen Test
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초록
Trunk holding test (Sorensen test) appear to have more value than strength testin prediction the occurrence of low back pain. Electromyographic activity of trunkextensor muscles during these test may provide clues to the etiology ofneuromuscular-based low back pain. This study investigated the difference in backmuscle endurance between healthy adult men and women using surfaceelectromyographic <EMG) power spectral analysis. Thirty healthy subjects (15 menand 15 women) performed an unsupported trunk holding test for 60 seconds. Recording surface electrodes were placed over the erector spinae medially andlaterally at vertebral levels of Ll and L5. Slope of total frequency was evaluatedusing the MP100WSW Fast Fourier Transform spectrum analysis program. Theslopes of all indices of back muscle fatigue, except right L5, were significantlysteeper in men than in women (p<0.05). Our results indicated that the trunk holdingtest using EMG power spectral analysis of erector spinae muscles is useful for theevaluation of fatigue rate of these muscles. Our results also showed a higher muscleendurance in healthy adult women than in men.
Abstract
Trunk holding test (Sorensen test) appear to have more value than strength testin prediction the occurrence of low back pain. Electromyographic activity of trunkextensor muscles during these test may provide clues to the etiology ofneuromuscular-based low back pain. This study investigated the difference in backmuscle endurance between healthy adult men and women using surfaceelectromyographic <EMG) power spectral analysis. Thirty healthy subjects (15 menand 15 women) performed an unsupported trunk holding test for 60 seconds. Recording surface electrodes were placed over the erector spinae medially andlaterally at vertebral levels of Ll and L5. Slope of total frequency was evaluatedusing the MP100WSW Fast Fourier Transform spectrum analysis program. Theslopes of all indices of back muscle fatigue, except right L5, were significantlysteeper in men than in women (p<0.05). Our results indicated that the trunk holdingtest using EMG power spectral analysis of erector spinae muscles is useful for theevaluation of fatigue rate of these muscles. Our results also showed a higher muscleendurance in healthy adult women than in men.