Table 5.

Baseline hemodynamics and vascular response to intra-arterial infusion of P_2x 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	114 ± 3	74 ± 8	70 ± 18	112 ± 9	201 ± 13*	0.64 ± 0.20	0.62 ± 0.15	0.96 ± 0.07	1.77 ± 0.12*
	2.5 miles/h	127 ± 3	126 ± 2	184 ± 31	179 ± 32	211 ± 29	305 ± 45*	1.48 ± 0.25	1.42 ± 0.24	1.68 ± 0.24	2.40 ± 0.32*
	4 miles/h 2.5% grade	139 ± 7	141 ± 6	267 ± 30	245 ± 32	256 ± 41	316 ± 40*	1.92 ± 0.18	1.72 ± 0.18	1.81 ± 0.24	2.22 ± 0.25*
Old	Rest	120 ± 9	126 ± 9	80 ± 22	61 ± 13	64 ± 20	163 ± 31*	0.69 ± 0.21	0.50 ± 0.11	0.54 ± 0.16	1.38 ± 0.31*
	2.5 miles/h	141 ± 6	141 ± 9	243 ± 20	234 ± 23	186 ± 24	237 ± 28*	1.77 ± 0.16	1.77 ± 0.23	1.32 ± 0.17	1.73 ± 0.27*
	4 miles/h 2.5% grade	156 ± 9	171 ± 13	345 ± 54	312 ± 35	232 ± 30	200 ± 19*	2.40 ± 0.50	2.01 ± 0.33	1.48 ± 0.14	1.20 ± 0.13*

Values are expressed as means ± SE.

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