Muscle ContractionMovementMusclesMuscle, SmoothMuscle, SkeletalIsometric ContractionMuscle ProteinsMuscle, Smooth, VascularMuscle Fibers, SkeletalEye MovementsMuscle DevelopmentMuscle FatigueUterine ContractionMyocardial ContractionElectromyographyMuscle RelaxationMuscle Fibers, Fast-TwitchElectric StimulationMuscle DenervationMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleCalciumMuscle SpindlesOculomotor MusclesNeck MusclesMitochondria, MuscleBiomechanical PhenomenaPapillary MusclesTime FactorsMuscle, StriatedGuinea PigsRabbitsRespiratory MusclesMuscle WeaknessHead MovementsQuadriceps MuscleMovement DisordersVasoconstrictionFacial MusclesAbdominal MusclesMotor NeuronsMuscle CellsMasticatory MusclesMasseter MuscleIsotonic ContractionTracheaCell MovementTorqueIntercostal MusclesMyofibrilsRats, Sprague-DawleyRats, WistarDose-Response Relationship, DrugArmCells, CulturedPotassium ChlorideHindlimbActinsPlant Viral Movement ProteinsMuscular AtrophyAcetylcholineModels, BiologicalPsychomotor PerformanceCatsHandGastrointestinal MotilityAction PotentialsSatellite Cells, Skeletal MuscleDiaphragmUrinary BladderDogsMuscular DiseasesFetal MovementNorepinephrinePectoralis MusclesPsoas MusclesVolitionVasoconstrictor AgentsPotassiumPeristalsisMyocardiumAdenosine TriphosphateSarcomeresMyosin Heavy ChainsMotor CortexCarbacholNeuromuscular JunctionAorta, ThoracicReflexCaffeineAtropineElbowPhysical ExertionIleumTemporal MuscleFingersKineticsLegPhenylephrineNifedipine