<qa>  What was the average blood pressure during the 2 hours after awakening?All variables were analyzed pre-intervention and for 24 hours post-intervention. In addition, the day time and night time periods were adopted to calculate, from the systolic blood pressures and diastolic blood pressures, the mean blood pressure during the day time wakefulness and night time sleep hours. The percentage of nocturnal blood pressure fall was calculated from the percentage of blood pressure reduction during night-time compared to day time night time:day time ratio. The morning blood pressure surge that corresponds to the morning increase in blood pressure and is calculated according to the difference between morning pressure the average blood pressure during the 2 hours after awakening and the lowest night time blood pressure the average of the lowest blood pressure and the 2 readings immediately preceding and after the lowest value were also analyzed. 