Figure 3: Means and standard errors of cardiovascular measures during the psychosocial stress procedure. Note: SBP: systolic blood pressure; DBP: diastolic blood pressure; HR: heart rate; CO: cardiac output; TPR: total peripheral resistance; EHRV: estimated heart rate variability; REST: baseline rest phase; PREP: speech preparation; MA: mental arithmetic; SPCH: speech task; REC: recovery phase; M: males; F: females. For EHRV the group difference remained statistically significant (p values < 0.05) throughout the experiment with no interaction effect of group by time. The group difference during the experiment in CO was marginally significant (), with no interaction effect of group by time. for group differences in prestressor levels (REST); see also Table 2, results in bold.