Fig. 2 | Hypertension Research

Fig. 2

From: Dark-phase melatonin administration does not reduce blood pressure but induces changes in parameters related to the control of the cardiovascular system in spontaneously hypertensive rats

Fig. 2

Ejection time, time to pressure peak (TTPK), the percent recovery point (%REC), the maximum positive (dP/dtmax) and negative (dP/dtmin) value of the first derivative of the pressure that occurs during the cardiac cycle in rats with nocturnal melatonin administration at three concentrations (Mel2, n = 7; Mel10, n = 5 and Mel45, n = 8) and in the placebo group (n = 9). Graphs contain the results of two-way ANOVA. C control week, M1, M2 and M3 first, second and third week with melatonin administration. Data are visualised as individual datapoints and arithmetic mean ± the standard error of the mean

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