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KMID : 0389420110190030231
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Korean Journal of Stress Research
2011 Volume.19 No. 3 p.231 ~ p.236
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Effects of Stress and Psychological Symptoms on Heart Rate Variability
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Hong Sang-Hun
Kong Mi-Hee
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Abstract
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We investigated the differences in the activity of the autonomic nervous system according to the degree of stress and the presence or absence of following neuropsychiatric symptoms-anxiety, depression, and insomnia, using heart rate variation (HRV) that represents autonomic nervous function in a non-invasive way. Of all adult men who underwent health exam from April 9, 2009 to May 4, 2010, 192 subjects without certain illnesses including arrhythmia were recruited for this study. They were tested for HRV and asked to fill in a questionnaire for the degree of stress and the neuropsychiatric symptoms. The degree of stress fell into three categories, and the neuropsychiatric symptoms were grouped into anxious, depressive, and insomnia group according to the mark checked on the questionnaire form for "feeling anxious for no apparent reason", "always feeling depressed", and "difficulty sleeping", respectively. Comparison among groups was made for the differences in SDNN, LF, HF, and LF/HF ratio-components of HRV. After adjusting for age, it shows that there was no meaningful differences in HRV among three groups defined by the degree of stress and also among the groups by the neuropsychiatric status except for the significant increase of LF (p=0.028) in the depressive group. Compared to the normal group, the insomnia one presented significant elevations of LF and LF/HF ratio (p=0.018, p=0.050). In conclusion, neuropsychiatric symptoms such as depression and insomnia seem to be associated with the activation of sympathetic nervous system measured by HRV.
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KEYWORD
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Stress, Anxiety, Depression, Insomnia, Heart rate variability
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