PMID: 11341553May 9, 2001Paper

Sympathetic predominance in young male white-collar workers with mild to moderate hypertension

Industrial Health
T KobayashiH Kashiwazaki

Abstract

In order to investigate the difference in diurnal variation of autonomic control between young male mild to moderate hypertensive and normotensive white-collar workers, we accessed heart rate variability with ambulatory blood pressure for over 24 hours including work and sleep periods. Both mean systolic and diastolic blood pressures (SBP and DBP) were significantly (p<0.01) higher in hypertensives (HT, n=11) than normotensives (NT, n=11) in all phases, whereas heart rate was not different between them in any phase. Blood pressures during work period (on-duty) were significantly higher than those during non-work period (off-duty) in both NT and HT. High frequency (HF; 0.15-0.40 Hz) power showed a circadian pattern in phase with the sleep-wake cycle. Both HF and low frequency (LF; 0.05-0.15 Hz) powers in HT were significantly lower than that in NT during the sleep period (p<0.05). LF/HF ratio showed a circadian pattern that was almost opposite of the pattern in HF power. Twenty-four-hour average LF/HF in HT was higher than that in NT (p<0.05). Especially during on-duty, LF/HF in HT was significantly higher than in NT (p<0.05). The increase of SBP and LF/HF from off-duty period to on-duty period (deltaSBP and deltaLF/HF) showed s...Continue Reading

Citations

Apr 13, 2005·International Archives of Occupational and Environmental Health·Katsuyuki MurataMiwako Dakeishi
Dec 10, 2009·Industrial Health·Fumiharu Togo, Masaya Takahashi
Nov 25, 2003·American Journal of Physiology. Heart and Circulatory Physiology·Terry B J KuoCheryl C H Yang

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