| Comparison between Isokinetic Method and Electromyographic Method in Muscle Power Measurement of Lumbar Muscles. |
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Shin, Jung Bin , Kim, Sung Woo , Cho, Yoon Soo , You, Sung , Park, Yong Sun |
1Department of Rehabilitation Medicine, National Health Insurance Corporation Ilsan Hospital, Korea. hamays@hanmail.net
2Department of Rehabilitation Medicine, Yonsei University College of Medicine, Korea. |
| 요추부 근력 측정에서 등속성 측정과 근전도 측정 방법의 비교 |
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신정빈·김성우·조윤수1·유성1·박영선1 |
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국민건강보험공단 일산병원 재활의학과, 1연세대학교 의과대학 재활의학교실 |
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| Abstract |
Objective
The purpose of this study was to analyze the relationship between isokinetic measurement and electromyographic method in muscle power measurement of lumbar muscles.
Method
The subjects were 23 chronic lower back pain patients and 17 normal adult. Isokinetic lumbar extensor strength test was performed at specific speeds (120o/sec, 180o/sec) with Cybex 770 and automatic turn/amplitude analysis of electromyogram (EMG) was performed with Viking EMG system.
Results
The relationship between the parameters of isokinetic test and turn/sec of EMG study was not significantly correlated. The relationship between the para-meters of isokinetic test and amplitude of EMG study was significantly correlated. The relationship between the parameters of isokinetic test and ratio of turns to mean amplitude of EMG was not correlated significantly. The mean amplitude in 120o/sec speed test and the ratio of turns to mean amplitude in 120o/sec and 180o/sec speed test were significantly lower in chronic lower back pain patients than that of normal controls.
Conclusion
Turn/amplitude analysis of EMG method if performed with isometric or isokinetic muscle test will be clinically useful in muscle power measurement of lumbar muscles. (J Korean Acad Rehab Med 2002; 26: 759-763) |
| Key Words:
Isokinetics, Automatic turn/Amplitude analysis, Lumbar muscles, Back pain |
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