AtenololPropanolaminesBetaxololAdrenergic beta-AntagonistsAcebutololPractololMetoprololPropranololBisoprololPindololHeart RateSympathomimeticsThioureaPhysical ExertionBlood PressureIsoproterenolClinical Trials as TopicHeartHemodynamicsDogsAdrenergic beta-1 Receptor AntagonistsAntihypertensive AgentsDouble-Blind MethodHypertensionBendroflumethiazideHydrochlorothiazideCeliprololOxprenololButoxamineReceptors, Adrenergic, betaNifedipineNadolol