Table 1.

Cardiovascular responses during hypoxia

	Baseline	Onset	End	4 min
MAP, mmHg	94 ± 6	91 ± 5	80 ± 5*	89 ± 6
HR, beats/min	407 ± 8	420 ± 9*	424 ± 9*	409 ± 8

Values are means ± SE. Mean arterial blood pressure (MAP) and heart rate (HR) during baseline, onset of hypoxia, end of hypoxia, and 4 min posthypoxia are displayed.

^*P < 0.05 compared with baseline.