Table 3.

Systemic and control limb responses to intra-femoral phentolamine

Variable	Young men	Older men
Mean blood pressure (mmHg)
Before	90 ± 2	91 ± 4
After	87 ± 2	83 ± 3
P value	0.14	0.02
Heart rate (beats min−1)
Before	52 ± 3	51 ± 2
After	55 ± 3	53 ± 2
P value	0.10	0.08
Femoral blood flow (ml min−1)
Before	326 ± 17	241 ± 23
After	303 ± 13	209 ± 14
P value	0.37	0.23
Femoral vascular conductance (U)
Before	3.65 ± 0.16	2.73 ± 0.34
After	3.50 ± 0.12	2.50 ± 0.23
P value	0.80	0.63
Femoral vascular resistance (U)
Before	0.28 ± 0.01	0.40 ± 0.04
After	0.29 ± 0.01	0.42 ± 0.04
P value	0.17	0.13

Data are means ±s.e.m.