Table 1.

Circulatory variables under each experimental condition

	Heart rate (beats min−1)				MAP (mmHg)
	Normoxia		Hyperoxia		Normoxia		Hyperoxia
FI,CO2 (%)	Cont	Indo	Cont	Indo	Cont	Indo	Cont	Indo
0	62 ± 3	57 ± 2*	60 ± 3	58 ± 4	74 ± 3	78 ± 3*	75 ± 3	81 ± 3
2	60 ± 2	55 ± 3	58 ± 3	53 ± 3	75 ± 4	79 ± 2	75 ± 3	80 ± 2
4	61 ± 3	56 ± 3	60 ± 3	57 ± 3	75 ± 3	79 ± 2	75 ± 4	82 ± 2
6	71 ± 3	66 ± 4	67 ± 3	62 ± 3	79 ± 3	85 ± 2	79 ± 3	88 ± 2

	CVR (mmHg cm−1 s−1)				PI
	Normoxia		Hyperoxia		Normoxia		Hyperoxia
FI,CO2 (%)	Cont	Indo	Cont	Indo	Cont	Indo	Cont	Indo
0	1.8 ± 0.2	2.4 ± 0.4	2.1 ± 0.2	2.7 ± 0.3	1.0 ± 0.2	1.2 ± 0.2	1.2 ± 0.3	1.2 ± 0.2
2	1.7 ± 0.2	2.3 ± 0.3	1.7 ± 0.1	2.8 ± 0.4	1.0 ± 0.1	1.1 ± 0.2	1.0 ± 0.1	1.2 ± 0.2
4	1.5 ± 0.1	2.3 ± 0.3	1.6 ± 0.1	2.7 ± 0.4	0.9 ± 0.1	1.1 ± 0.2	1.0 ± 0.1	1.2 ± 0.3
6	1.2 ± 0.1	2.2 ± 0.3	1.2 ± 0.1	2.3 ± 0.3	0.8 ± 0.1	1.0 ± 0.1	0.8 ± 0.1	1.0 ± 0.1

^*P < 0.05 compared to control. MAP, mean arterial pressure; CVR, cerebrovascular resistance; PI, pulsatility index; Cont, control group; Indo, indomethacin group.