<qa>  What was the elapsed time between two consecutive R waves between cardiac cycles?Pre-intervention: Before each intervention, the individuals remained seated in the laboratory for a period of 20 minutes in a quiet room without interference from noise and with a room temperature between 22-24oC. During this period, every 5 minutes, blood pressure measurements were obtained, and the R-R intervals the elapsed time between two consecutive R waves between cardiac cycles were continuously recorded. The mean blood pressure and indicators of heart rate variability based on the R-R interval records were considered for the pre-intervention resting period. 