Muscle RelaxationElasticityMuscle, SkeletalMuscle, SmoothMusclesMuscle ContractionRelaxation TherapyElasticity Imaging TechniquesMuscle ProteinsMuscle, Smooth, VascularMuscle Fibers, SkeletalVasodilationMyostatinMuscle DevelopmentNitric OxideRelaxationAcetylcholineIsometric ContractionMuscular AtrophyTracheaCyclic GMPMuscle StrengthVasodilator AgentsNitroprussideMuscle FatigueEndothelium, VascularSarcopeniaElectromyographyMitochondria, MuscleQuadriceps MuscleElastic ModulusTime FactorsNitroarginineElectric StimulationDeuteroporphyrinsBiological FactorsExercisePenisRabbitsAorta, ThoracicHSP20 Heat-Shock ProteinsRats, Sprague-DawleyDose-Response Relationship, DrugResistance TrainingBiomechanical PhenomenaMuscle TonusCalciumNeuromuscular BlockadeGuinea PigsAortaNeuromuscular Nondepolarizing AgentsViscosityHindlimbOxadiazolesMuscle Fibers, Fast-TwitchNitric Oxide DonorsMuscle DenervationPhysical EnduranceIsoproterenolGuanylate CyclaseNitric Oxide SynthaseStress, MechanicalNG-Nitroarginine Methyl EsterMuscle Fibers, Slow-TwitchMyocardial ContractionOpossumsVasoactive Intestinal PeptideMyocytes, Smooth MuscleRats, WistarCyclic GMP-Dependent Protein KinasesEnzyme InhibitorsCreatineHypertrophyArteriesAnal CanalBlood PressureGlycogenDogsPapillary MusclesPhenylephrinePenile ErectionNitroglycerinMagnetic Resonance SpectroscopyPhysical ExertionAgingMesenteric ArteriesArginineVasoconstrictionRegional Blood FlowNeck MusclesOculomotor MusclesOrgan SizeMuscle, StriatedHeart RateVasoconstrictor AgentsBromcresol GreenAndrostanolsgamma-CyclodextrinsQuinoxalinesAdrenergic beta-Agonists