The effect of caffeine on the cardiac intervalogram indices depending on the ovarian cycle phase in women

: Caffeine (0.1 g) was shown to increase the variability of the heart rate (parameters of the cardiointervalogram) in 10 healthy women irrespective of their vegetative and hormonal status. The combined use of caffeine and cardiointervalogram reveals "risk phases" in the ovarian cycle of women, accompanied by tension of the adaptive mechanisms. This makes it possible to recommend such combination as an adequate test for the evaluation of the state of the adaptive systems in health and disease.