Fig. 6
Averaged data of heart rate (HR), R–R interval (RRI), and arterial pressure (AP) before (pre-SNS) and during sympathetic nerve stimulation (SNS) obtained from the metoprolol protocol. The open and filled bars indicate data obtained under control conditions and after the administration of metoprolol. The results of a two-way repeated-measure analysis of variance (ANOVA) are displayed. bpm beats/min. Data are mean and mean + SE values (n = 6)