Table 3.

Sympathetic activity

	Baseline	T15	T30	T45	T60
Burst Frequency (bursts/min)
Saline	24 ± 3	25 ± 3	29 ± 3b	32 ± 5b	33 ± 5b
β‐Blocker	22 ± 2	24 ± 2	29 ± 3b	30 ± 3b	35 ± 3b
Burst Incidence (bursts/100 heart beats)
Saline	37 ± 4	37 ± 5	43 ± 5b	41 ± 5b	46 ± 6b
β‐Blocker	34 ± 3	45 ± 4a , b	50 ± 5a , b	55 ± 5a , b	55 ± 5a , b

^a P < 0.05 versus saline.

^b P < 0.05 versus baseline.

All data are reported Mean ± SEM from n = 8, unless otherwise noted (Saline T30, n = 7).