Table 2.

Baseline hemodynamics and vascular response to intra-arterial infusion of alpha-1 receptor antagonist

		MAP, mmHg		Control Limb Blood Flow, ml/min		Experimental Limb Blood Flow, ml/min		Control Limb Conductance, ml·min−1·mmHg−1		Experimental Limb Conductance, ml·min−1·mmHg−1
Group	Intensity	Pre	Post	Pre	Post	Pre	Post	Pre	Post	Pre	Post
Young	Rest	117 ± 4	112 ± 1	56 ± 8	61 ± 9	61 ± 5	154 ± 27*	0.48 ± 0.07	0.54 ± 0.08	0.53 ± 0.05	1.39 ± 0.24*
	2.5 miles/h	129 ± 3	124 ± 3	232 ± 29	230 ± 45	209 ± 29	352 ± 39*	1.77 ± 0.20	1.83 ± 0.36	1.62 ± 0.20	2.86 ± 0.33*
	4 miles/h 2.5% grade	136 ± 3	134 ± 3	258 ± 42	270 ± 45	248 ± 35	378 ± 42*	1.93 ± 0.34	2.05 ± 0.36	1.84 ± 0.26	2.84 ± 0.33*
Old	Rest	123 ± 12	126 ± 11	73 ± 23	79 ± 33	57 ± 9	116 ± 20*	0.61 ± 0.15	0.61 ± 0.20	0.47 ± 0.07	0.92 ± 0.16*
	2.5 miles/h	137 ± 8	131 ± 11	230 ± 20	234 ± 27	190 ± 15	282 ± 24*	1.79 ± 0.23	1.79 ± 0.35	1.42 ± 0.16	2.31 ± 0.40*
	4 miles/h 2.5% grade	153 ± 10	156 ± 10	279 ± 15	285 ± 37	242 ± 23	308 ± 26*	1.99 ± 0.39	2.01 ± 0.41	1.59 ± 0.12	2.00 ± 0.18*

Values are means ± SE.

^*P < 0.05 indicates a significant difference from Pre value.