Table 2.

Adenosine: rest and exercise vascular hemodynamics

Variable	Saline (control)	Bout 1	Bout 2	Bout 3	Bout 4	Bout 5
Time (minutes)	‐	5	30	60	120	150
HR
Rest	59 ± 2	60 ± 2	58 ± 2	61 ± 2	59 ± 2	59 ± 2
Exercise	63 ± 2	62 ± 2	63 ± 2	62 ± 2	64 ± 2	65 ± 2
MAP
Rest	93 ± 3	92 ± 3	95 ± 3	97 ± 3	96 ± 3	96 ± 3
Exercise	98 ± 4	95 ± 3	96 ± 3	97 ± 4	102 ± 4	101 ± 4
FBF (mL/min/100 mL FAV)
Rest	4.3 ± 0.6	20.9 ± 2.5*	24.8 ± 2.5*	22.4 ± 2.2*	25.8 ± 5.1*	20.4 ± 1.4*
Exercise	28.6 ± 4.3	52.0 ± 4.9*	54.2 ± 5.4*	55.5 ± 6.9*	55.7 ± 6.3*	56.3 ± 5.3*
(Δ) FBF from rest (mL/min/100 mL FAV)
Exercise	24.3 ± 3.8	31.1 ± 5.7	29.4 ± 4.9	33.2 ± 6.3	29.9 ± 4.5	35.9 ± 5.0
Δ FVC from rest (mL/min/100 mmHg/100 mL FAV)
Exercise	26.4 ± 3.7	32.1 ± 5.5	30.3 ± 4.7	34.5 ± 6.2	32.5 ± 4.3	37.2 ± 5.1

Values are means ± SE for all nine subjects. MAP, mean arterial pressure.

^* P < 0.05 from control. FBF, forearm blood flow; Delta FBF was calculated as bout exercise FBF – bout baseline FBF; FVC, forearm vascular conductance; Delta FVC was calculated as bout exercise FVC‐bout baseline FVC. 100.