Figure 1

Mean ± 95% CI values (geometric values for A, D, F & systolic arterial pressure in B) at rest and in response to two 5-minute periods of stress (vertical grey bars) for (A) heart rate; (B) systolic, mean and diastolic arterial pressure; (C) stroke volume indexed to body surface area (BSA); (D) cardiac output indexed to BSA; (E) systemic vascsular resistance indexed to BSA and (F) total arterial compliance indexed to BSA. *P <0.0125, **P<0.0025, ***P<0.00025 for pair-wise 2-sided t-test comparisons of mean values during each stress period, or the recovery period, with those at reast. **P<0.0025 for pair-wise 2-sided t-test comparisons of values during first and second stress periods. P-value thresholds were Bonferroni corrected to account for four comparisons per variable.