Systemic circulatory responses to mental arithmetic (MA) during EXE (●) and CON (○) trials. MA1, MA2, MA3, MA4, and MA5 show 1st, 2nd, 3rd, 4th, and 5th minute of MA. MA significantly increased HR, MAP, SBP, and DBP. *Difference from pre-task in EXE. †Difference from pre-task in CON. #Difference between EXE and CON trials (P <0.05).