Table 1.

Heart rate and brachial arterial blood pressure recorded in supine rest and 30 s before the preflight seated and inflight rebreathing maneuvers

	Preflight (Supine)	Preflight (Seated)	Inflight
HR, beats/min	55.2 ± 8.4*	62.1 ± 9.2	60.0 ± 10.6
SBP, mmHg	128.5 ± 16.9	133.8 ± 16.8	126.8 ± 16.4
DBP, mmHg	68.2 ± 6.8	70.5 ± 10.0	71.1 ± 3.6
MAP, mmHg	91.5 ± 7.5	91.2 ± 11.6	91.5 ± 5.8
PP, mmHg	60.4 ± 13.3	66.3 ± 10.5	57.2 ± 15.9

Values are means ± SD. HR, heart rate; SBP, systolic blood pressure; DBP, diastolic blood pressure; MAP, mean arterial pressure; PP,  pulse pressure. Statistical analysis by one-way repeated-measures ANOVA, with Holm-Sidak post hoc.

^*P = 0.012, preflight supine vs. preflight seated.