Table 2.

Heart rate and blood pressure at rest and during graded handgrip exercise in control and local adrenoreceptor blockade conditions

	Baseline		5% MVC		15% MVC		25% MVC
	Young	Older	Young	Older	Young	Older	Young	Older
Control
HR (beats min−1)	58 ± 3	57 ± 3	61 ± 3	64 ± 3	67 ± 4	65 ± 3	70 ± 5	71 ± 3
MAP (mmHg)	88.2 ± 2.9	94.0 ± 2.1	87.4 ± 2.6	100.1 ± 2.4*	89.9 ± 2.9	103.9 ± 3.4*	96.5 ± 3.1	110.4 ± 3.0*
α + β-Adrenoreceptor blockade
HR (beats min−1)	56 ± 4	56 ± 3	57 ± 3	58 ± 3	62 ± 4	62 ± 3	68 ±	67 ± 4
MAP (mmHg)	89.3 ± 2.7	96.8 ± 4.0*	89.9 ± 2.6	100.6 ± 3.5*	93.1 ± 3.1	102.4 ± 3.0*	96.5 ± 2.7	104.0 ± 3.6*

Values are mean ± SEM. ^*P < 0.05 vs. Young.