Muscle RelaxationTracheaMuscle, SmoothMuscle, SkeletalMusclesMuscle ContractionRelaxation TherapyMuscle, Smooth, VascularMuscle ProteinsMuscle Fibers, SkeletalVasodilationNitric OxideMyostatinMuscle DevelopmentRelaxationAirway RemodelingAirway ObstructionAcetylcholineAirway ResistanceIsometric ContractionMuscular AtrophyCyclic GMPMuscle StrengthVasodilator AgentsNitroprussideMuscle FatigueSarcopeniaEndothelium, VascularElectromyographyMitochondria, MuscleQuadriceps MuscleElectric StimulationNitroarginineTime FactorsGuinea PigsDose-Response Relationship, DrugDeuteroporphyrinsExerciseBiological FactorsPenisHSP20 Heat-Shock ProteinsRabbitsMuscle TonusRats, Sprague-DawleyResistance TrainingAorta, ThoracicNeuromuscular BlockadeCalciumBronchiNeuromuscular Nondepolarizing AgentsOxadiazolesHindlimbIsoproterenolMyocytes, Smooth MuscleMuscle Fibers, Fast-TwitchNitric Oxide DonorsNitric Oxide SynthaseNG-Nitroarginine Methyl EsterPhysical EnduranceMuscle DenervationGuanylate CyclaseMuscle Fibers, Slow-TwitchVasoactive Intestinal PeptideAortaRespiratory SystemOpossumsCyclic GMP-Dependent Protein KinasesHypertrophyEnzyme InhibitorsMyocardial ContractionRats, WistarDogsCreatineAnal CanalGlycogenPhenylephrinePhysical ExertionPapillary MusclesPenile ErectionNitroglycerinMagnetic Resonance SpectroscopyRespiratory MusclesArginineAdrenergic beta-AgonistsVasoconstrictionBronchial HyperreactivityMesenteric ArteriesRegional Blood FlowSignal TransductionNeck MusclesMice, Inbred C57BLBlood PressureIntubation, IntratrachealOculomotor MusclesAndrostanolsLungVasoconstrictor AgentsMuscle, StriatedHeart RateAdaptation, Physiological