Table 1.

Neurochemical and hemodynamic values during supine rest and after 10 min of TYR infusion (infusate DA ≤50 nmol/L).

Value	Baselinea	TYR infusiona
DAa,b ng/L	0.07 (0.01) [n = 12]	0.10 (0.02)c [n = 12]
NEa, ng/L	1.17 (0.19) [n = 13]	1.67 (0.32)c [n = 13]
NEv, ng/L	1.09 (0.26) [n = 9]	1.77 (0.49)c [n = 11]
AV diff NE, ng/L	0.02 (0.08) [n = 9]	0.17 (0.36) [n = 10]
DHPGa, ng/L	4.30 (0.37) [n = 13]	7.82 (0.76)d [n = 13]
DHPGv, ng/L	4.42 (0.78) [n = 9]	7.49 (1.18)c [n = 10]
Heart rate, beats/min	67 (5) [n = 10]	63 (4) [n = 10]
Stroke volume, mL	82 (7) [n = 10]	94 (8)e [n = 10]
Cardiac output, L/min	5.3 (0.3) [n = 10]	5.7 (0.4) [n = 10]
Total peripheral resistance, mmHg · min/L	1694 (171) [n = 10]	1756 (172) [n = 10]
MAP, mmHg	108 (4) [n = 23]	119 (5)d [n = 23]
FBF, mL · min−1 · dL−1	4.2 (0.4) [n = 23]	4.1 (0.3) [n = 23]
FVR units	32 (5) [n = 23]	34 (5) [n = 23]

^aValues are the mean (SE), with the numbers in brackets indicating the numbers of individuals.

^bDA_a, arterial plasma DA; NE_a, arterial plasma NE; NE_v, arm venous plasma norepinephrine; AV diff, venous-arterial difference; DHPG_a, arterial plasma DHPG; MAP, mean arterial pressure; FBF, forearm blood flow; FVR, forearm vascular resistance.

^c–eSignificant difference from baseline:

^cP <0.05;

^dP <0.001;

^eP <0.01.