背部筋電位のトポグラフィ
Surface electromyogram (EMG) from trapezius regions of four healthy women were measured both immediately before and after exercise, and in recovery. Simultaneously, subjective symptoms in the area of the neck and shoulders were investigated. EMG data were analyzed by Fast Fourier Transform (FFT) and...
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Published in | 形態・機能 Vol. 10; no. 2; pp. 115 - 119 |
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Main Authors | , , , |
Format | Journal Article |
Language | Japanese |
Published |
コ・メディカル形態機能学会
2012
Co-medical Research Society of Structure and Function |
Subjects | |
Online Access | Get full text |
ISSN | 1347-7145 1884-6084 |
DOI | 10.11172/keitaikinou.10.115 |
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Summary: | Surface electromyogram (EMG) from trapezius regions of four healthy women were measured both immediately before and after exercise, and in recovery. Simultaneously, subjective symptoms in the area of the neck and shoulders were investigated. EMG data were analyzed by Fast Fourier Transform (FFT) and power spectrums were obtained. Based on these data, myogenic potential topography was composed in 6 bits resolution. Resultant myogenic potential topography recorded from human trapezius muscle was used to visually explain shoulder stiffness. Two women who complained of shoulder stiffness showed remarkable electrical change in the low frequency domain (1∼3 Hz, 10∼15 Hz) of EMG after exercise, while two subjects who had no complaints of shoulder stiffness did not. These results suggest that muscle activity represented by high potential in the low frequency domain is possibly a specific phenomenon for shoulder stiffness.
健康な成人女性4名を対象に、運動負荷の前・後および回復期に僧帽筋の筋電図測定と頚肩部の自覚症状の聞き取りを行った。測定した筋電図は高速フーリエ変換による周波数解析を行い、パワースペクトルを求め、64階調のスケールカラーで表す筋電位トポグラムを構成した。この結果から、“肩こり”という症状を視認的に説明するための一助として、トポグラフィにより運動負荷による影響について検討した。 肩こりを自覚する2名には、運動負荷後に特徴的な電位の増大が認められ、周波数1~3 Hzおよび10~15 Hz帯域のトポグラム上で鮮明に確認された。これらの筋活動は肩こりのない2名には観察されなかった。以上の結果から、低周波帯域で電位が増大した筋活動は、肩こりに特有な筋活動現象であることが示唆された。 |
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ISSN: | 1347-7145 1884-6084 |
DOI: | 10.11172/keitaikinou.10.115 |