Muscle RelaxationExercise TestMuscle, SmoothMusclesExercise TherapyMuscle ContractionMuscle, SkeletalRelaxation TherapyExerciseMuscle, Smooth, VascularExercise ToleranceMuscle ProteinsMuscle Fibers, SkeletalPhysical ExertionMuscle FatigueVasodilationNitric OxideMuscle DevelopmentTracheaCyclic GMPDeuteroporphyrinsOxygen ConsumptionAcetylcholineIsometric ContractionPhysical EnduranceHSP20 Heat-Shock ProteinsNeuromuscular BlockadeMuscle Fibers, Fast-TwitchNitroprussideVasodilator AgentsElectric StimulationTime FactorsNeuromuscular Nondepolarizing AgentsRelaxationMuscle Fibers, Slow-TwitchElectromyographyMuscle DenervationMitochondria, MusclePenisMuscle TonusEndothelium, VascularHeart RateRabbitsCalciumDose-Response Relationship, DrugGuinea PigsMyocytes, Smooth MuscleOpossumsNitroarginineQuadriceps MuscleRespiratory MusclesAorta, ThoracicIsoproterenolRats, Sprague-DawleyNeck MusclesNitric Oxide DonorsCyclic GMP-Dependent Protein KinasesBiological FactorsOxadiazolesRats, WistarPapillary MusclesGuanylate CyclaseOculomotor MusclesNitric Oxide SynthaseAnal CanalMuscle WeaknessMuscle, StriatedBlood PressureBromcresol Greengamma-CyclodextrinsAndrostanolsPenile ErectionMuscle SpindlesAortaVasoactive Intestinal PeptideNitroglycerinMuscle Stretching ExercisesBicyclingAbdominal MusclesMuscle Relaxants, CentralNG-Nitroarginine Methyl EsterRestDogsMyocardial ContractionBiomechanical PhenomenaNeuromuscular JunctionAtracuriumEnzyme InhibitorsNorepinephrineRunningResistance TrainingVasoconstrictionAdrenergic beta-AgonistsMuscle CellsPhenylephrineLactic AcidPhysical FitnessMyotonia CongenitaGlycogenVecuronium Bromide