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KMID : 0860920050070010027
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Journal of the Korean Association EMG-Electrodiagnostic Medicine
2005 Volume.7 No. 1 p.27 ~ p.33
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Establishment of Turns-Amplitude Cloud of Normal Adults
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Lee Sang-Chul
Park Yoon-Ghil
Kang Seong-Woong
Moon Jae-Ho
Park Ki-Deok
Choi Won-Ah
Kim Han-Seung
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Abstract
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Objectives: The automatic analysis of the EMG interference pattern reflects motor units induced all
range of power. Therefore, comparing to MUAP analysis, it has many advantages including much easier
to apply to incorporable patients, minimal errors by practitioners, and faster to obtain results and process
informations. The aim of this study is to establish the turns-amplitude clouds of normal adults with using
interference pattern.
Methods: Healthy adults whose age from 20 to 59 years old participated in this study. The interference
patterns were analyzed of the biceps brachi, vastus medialis, and tibialis anterior muscle. The interference
patterns were measured at 20 sites in each muscle and turns-mean amplitude was analyzed. With
turns/amplitude ratio, normal clouds of gender related turns-amplitude were obtained.
Results: The turns amplitude ratio of the biceps brachi, vastus medialis, and tibialis anterior muscle
were obtained in male and female. The establishment of normal clouds of gender related -turns-amplitude
were obtained.
Conclusion: By using normal cloud patterns of turns-amplitude, automatic interference pattern analysis
may contribute to diagnose myopathy and neuropathy in incorporable patients.
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KEYWORD
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Turns-amplitude, Normal cloud, Interference pattern, Quantitative EMG
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