Effects of vital exhaustion on cardiac autononomic nervous functions assessed by heart rate variability at rest in middle-aged male workers |
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Authors: | Watanabe Takemasa Sugiyama Yoshiki Sumi Yoshiko Watanabe Misuzu Takeuchi Kiyomi Kobayashi Fumio Kono Koichi |
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Affiliation: | (1) Department of Hygiene and Public Health, Osaka Medical College, Takatsuki, Japan;(2) Matsushita Health Care Center, Kadoma, Japan;(3) Department of Health and Psychosocial Medicine, Aichi Medical University School of Medicine, Aichi, Japan;(4) Department of Hygiene and Public Health, Osaka Medical College, 2-7 Daigakumachi, 569-8686 Takatsuki-shi, Osaka, Japan |
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Abstract: | We investigated the effects of vital exhaustion (VE) on cardiac autonomic functions in relation to working conditions such as overtime and frequent business trips, and to lifestyles such as smoking on 52 healthy middle-aged male workers. VE was evaluated by an abbreviated Maastricht Vital Exhaustion Questionnaire. Cardiac autonomic function atsupine rest was assessed by spectral analysis of heart rate variability inanannual healthcheckup.Themeanamplitudeofthehigh frequency(HF: 0.15-0.4 Hz) component was lowerinthe high-VE group, whereas no significant difference in the ratio ofthe low frequency (LF: 0.04-0.15 Hz) component powerto HF power (the LF/HF ratio) was observed among VE groups. There were significant interactive effects of VE and smoking on HF amplitude, and of VE and frequent business trips on the LF/HF ratio. VE symptoms were related to the suppression of the cardiac parasympathetic nervous functionat rest in middle-aged male workers, but not to the alteration in sympathovagal balance. Smoking and overwork such as frequent business trips may amplify the autonomic dysfunction in relation to VE among workers with a pronounced feeling of VE. |
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Keywords: | vital exhaustion heart rate variability smoking overload work middleaged men |
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