Table 2.

Steady-state responses to 15-min forearm exercise with intra-arterial infusion of AA (Trial 1)

	Lean	Obese	MetSyn
Mean arterial blood pressure, mmHg
Rest	97 ± 3	101 ± 3	105 ± 2*
Exercise	100 ± 3	101 ± 3	106 ± 3*
Exercise + AA	105 ± 4	104 ± 4	109 ± 3*
Brachial artery diameter, cm
Rest	0.40 ± 0.02	0.44 ± 0.02	0.43 ± 0.02
Exercise	0.42 ± 0.01	0.46 ± 0.02	0.45 ± 0.02
Exercise + AA	0.43 ± 0.01	0.47 ± 0.02	0.46 ± 0.02
Forearm blood flow, ml/min × 100 g
Rest	7 ± 1	9 ± 2	14 ± 2*
Exercise†	26 ± 2	33 ± 5	43 ± 7*
Exercise + AA†	31 ± 2	37 ± 5	46 ± 7*
Forearm vascular conductance, ml/min × 100 mmHg × 100 g
Rest	7 ± 1	9 ± 2	13 ± 3*
Exercise†	27 ± 2	33 ± 5	41 ± 6*
Exercise + AA†	30 ± 3	37 ± 5	43 ± 6*

Values are means ± SE. Lean (n = 14), Obese (n = 10), MetSyn (n = 13) (2 subjects did not complete all 15 min of exercise). Main effect of group:

^*P < 0.05 vs. Lean. Main effect of exercise:

^†P < 0.05 vs. Rest.