MUSCLE TENSION IN GENERALIZED ANXIETY DISORDER - ELEVATED MUSCLE TONUS OR AGITATED MOVEMENT
MUSCLE TENSION IN GENERALIZED ANXIETY DISORDER - ELEVATED MUSCLE TONUS OR AGITATED MOVEMENT
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DOI：
10.1111/j.1469-8986.1994.tb01039.x
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发表时间：
1994-03-01
期刊：
影响因子：
3.7
通讯作者：
HOEHNSARIC, R
中科院分区：
文献类型：
--
作者：
HAZLETT, RL;MCLEOD, DR;HOEHNSARIC, R
本研究的目的是探讨临床焦虑和非焦虑人群的额肌和腓肠肌肌电图（EMG）活动的幅度特征。在基线、实验室压力源和恢复条件下，对18名广泛性焦虑症（GAD）妇女和19名非焦虑妇女进行了比较。GAD组的EMG平均水平更高，但EMG偏度无组间差异。在应激过程中，GAD组额肌肌电图变异性显著降低。在应激条件下，两组的腓肠肌活动的平均水平和变异性增加，而偏度降低。这些结果表明，临床焦虑的人有升高的肌肉紧张性和减少的变化额肌活动在紧张的任务。此外，腓肠肌表现出应激反应，而额肌没有。这项研究提出了一种方法，肌电图分析，可能是有用的，在区分焦虑以及其他情绪障碍的独特功能。
The purpose of this study was to investigate the amplitude characteristics of frontalis and gastrocnemius electromyographic (EMG) activity in clinically anxious and nonanxious populations. Eighteen women with generalized anxiety disorder (GAD) and 19 nonanxious women were compared during baseline, laboratory stressor, and recovery conditions. EMG mean levels were greater for the GAD group, but there were no group differences in EMG skewness. During the stressor the GAD group had a significant reduction in frontalis EMG variability. Gastrocnemius muscle activity for both groups during the stressor condition increased in mean levels and variability while decreasing in skewness. These results indicate that clinically anxious individuals have elevated muscular tonus and have reduced variability in frontalis activity during stressful tasks. Also, the gastrocnemius muscle exhibited a stressor reactivity, whereas the frontalis did not. This study presents an approach to EMG analysis that could be useful in distinguishing unique features of anxiety as well as other emotional disorders.