Table 3.

Effects of hypoxia on forearm vascular conductance

	Condition	Trial 1: phentolamine	Trial 2: phentolamine and propranolol	Trial 3: phentolamine propranolol and l-NMMA
FVC in control arm	Normoxia	3.34 ± 0.64	3.22 ± 0.84	3.25 ± 0.88
(conductance units)	Hypoxia	3.86 ± 0.59 *	3.65 ± 0.86 *	3.84 ± 0.91 *
FVC in experimental arm	Normoxia	5.69 ± 1.12	5.62 ± 0.96	2.58 ± 0.39 †
(conductance units)	Hypoxia	8.02 ± 1.33 *	6.87 ± 1.03 *†	3.30 ± 0.51 *†

FVC, forearm vascular conductance.

^*P < 0.05, Hypoxia vs. Normoxia

^†P < 0.05 vs. prior trial within condition.