Fig. 5: Visual methodology.

Visual exploration of the assignment of individual menstrual cycle measures of cardiovascular amplitude. The ‘Population Model’ frame illustrates the population GAMM trend of Resting Heart Rate offset across the menstrual cycle. The population minimum and maximum are identified, and the surrounding days are shaded, with the grey shaded region encompassing the range of the expected minimum values and the blue shaded range encompassing the range of the expected maximum values. The second frame, ‘Individual Cycle’ illustrates the application to a single menstrual cycle. The individual resting heart rate offset values are represented by open circles. The dashed lines in each shaded region correspond to the mean values of resting heart rate offsets in the grey and blue shaded regions respectively. In the final pane, ‘Cycle Cardiovascular Amplitude’, the values from the prior panel are subtracted from one another, with the mean offset of the expected maximum minus the mean offset of the expected minimum representing the final cardiovascular amplitude metric.