Muscle RelaxationImagery (Psychotherapy)MusclesImaginationMuscle, SmoothMuscle, Smooth, VascularMuscle ContractionMuscle, SkeletalMuscle ProteinsMuscle Fibers, SkeletalRelaxation TherapyMuscle DevelopmentMuscle FatigueMuscle Fibers, Fast-TwitchSatellite ImageryEidetic ImageryMuscle DenervationMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleMitochondria, MuscleElectromyographyNitric OxideVasodilationTracheaNeck MusclesOculomotor MusclesIsometric ContractionMuscle, StriatedPapillary MusclesMuscle SpindlesElectric StimulationRespiratory MusclesCyclic GMPMuscle WeaknessAcetylcholineRabbitsDeuteroporphyrinsCalciumAbdominal MusclesMuscle CellsRelaxationQuadriceps MuscleHSP20 Heat-Shock ProteinsNeuromuscular BlockadeNitroprussideMasseter MuscleNeuromuscular Nondepolarizing AgentsTime FactorsGuinea PigsVasodilator AgentsFacial MusclesMasticatory MusclesPenisDose-Response Relationship, DrugIntercostal MusclesEndothelium, VascularMuscular AtrophyRats, Sprague-DawleyMuscle TonusSatellite Cells, Skeletal MuscleNeuromuscular JunctionAorta, ThoracicRats, WistarAortaOpossumsBiomechanical PhenomenaPectoralis MusclesMovementIsoproterenolMuscle Relaxants, CentralNitroarginineCyclic GMP-Dependent Protein KinasesNitric Oxide DonorsMuscular DiseasesOxadiazolesBiological FactorsMyofibrilsAnal CanalKinesthesisGuanylate CyclasePsoas MusclesNitric Oxide SynthaseVasoactive Intestinal PeptideBiofeedback, PsychologyAndrostanolsDogsEnzyme InhibitorsPenile ErectionMembrane PotentialsHindlimbgamma-CyclodextrinsBromcresol GreenCells, CulturedSatellite CommunicationsTemporal MuscleMotor CortexNG-Nitroarginine Methyl EsterMyocardial ContractionRNA, MessengerAtracurium