Table 4.

Baseline hemodynamics and vascular response to intra-arterial infusion of P2X receptor agonist

		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	113 ± 2	115 ± 4	71 ± 4	81 ± 12	102 ± 12	61 ± 6*	0.63 ± 0.03	0.73 ± 0.10	0.89 ± 0.09	0.54 ± 0.06*
	2.5 mph	127 ± 4	130 ± 3	199 ± 27	195 ± 23	197 ± 24	113 ± 15*	1.61 ± 0.28	1.52 ± 0.21	1.59 ± 0.25	0.87 ± 0.12*
	4 mph 2.5% grade	139 ± 6	143 ± 5	254 ± 33	258 ± 29	251 ± 32	141 ± 26*	1.78 ± 0.23	1.77 ± 0.19	1.81 ± 0.23	0.98 ± 0.17*
Old	Rest	130 ± 10	134 ± 10	73 ± 14	71 ± 11	84 ± 23	48 ± 11*	0.57 ± 0.10	0.54 ± 0.08	0.67 ± 0.18	0.37 ± 0.09*
	2.5 mph	150 ± 10	155 ± 12	256 ± 16	263 ± 16	209 ± 23	132 ± 25*	1.80 ± 0.16	1.81 ± 0.14	1.39 ± 0.15	0.85 ± 0.19*
	4 mph 2.5% grade	159 ± 7	167 ± 9	308 ± 70	309 ± 61	222 ± 18	137 ± 29*	1.93 ± 0.58	1.85 ± 0.59	1.40 ± 0.11	0.81 ± 0.13*

Values are mean ± SE. P2X, purinergic.

^*Significant difference from Pre value, P < 0.05.