Jacek J. Klawe, Małgorzata Tafil-Klawe, Jan Talar, Wojciech Sikorski, Maciej Śmietanowski

Jacek J. Klawe, Małgorzata Tafil-Klawe, Jan Talar, Wojciech Sikorski, Maciej Śmietanowski – Circadian changes of arterial blood pressure in obese subjects after-night-shift work. Fizjoterapia Polska 2003; 3(2); 180-183

Abstract
Background. A number of papers have reported that blood pressure correlates positively with body weight in humans. The analysis of circadian variability of blood pressure in obese patients indicates an abnormal tone in regulatory mechanisms. The increased arterial blood pressure observed in healthy subjects after sleep deprivation suggests that in obese subjects there may be increased risk of arterial hypertension after night-shift work. Material and methods. The investigation was performed in 6 male obese subjects. 24-h blood pressure monitoring was performed in an isolation chamber where temperature and humidity were kept constant, after day- and night- shift work. Results. The values of mean arterial pressure during 24 h after night-shift work were significantly higher as compared with the values observed after daytime work (P < 0.001). Conclusions. 1. Obese subjects showed an intollerance of the night-work, manifesting by the increase in blond pressure of after night-work. 2. Night-work changes the circadian course of the blood pressure during 24 hours after night-work.

Key words:
shift work, arterial hypertension, obesity

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