Muscle, SkeletalNorepinephrineMusclesMuscle Fibers, SkeletalMuscle ProteinsMuscle ContractionNorepinephrine Plasma Membrane Transport ProteinsMuscle DevelopmentMuscle, SmoothMuscle, Smooth, VascularMuscle Fibers, Fast-TwitchMitochondria, MuscleMuscle Fibers, Slow-TwitchMuscle DenervationSatellite Cells, Skeletal MuscleMuscle FatigueMuscular AtrophyRabbitsEpinephrineMuscular DiseasesSympathetic Nervous SystemCalciumRats, Sprague-DawleyMuscle CellsIsometric ContractionMyofibrilsQuadriceps MuscleMuscle RelaxationGlycogenHindlimbMyoblastsElectric StimulationInsulinMyocytes, Smooth MuscleMyocardiumCatecholaminesMuscle WeaknessMuscle, StriatedTime FactorsOculomotor MusclesRats, WistarRNA, MessengerMyoblasts, SkeletalMyosin Heavy ChainsNeck MusclesCells, CulturedMuscle SpindlesAdrenergic Uptake InhibitorsRespiratory MusclesMyoD ProteinGlucoseMyostatinPapillary MusclesSarcoplasmic ReticulumDesipraminePhysical ExertionAdrenergic alpha-AgonistsKineticsExerciseOxygen ConsumptionRegenerationVasoconstrictor AgentsDogsMuscular Dystrophy, AnimalMice, Inbred mdxAbdominal MusclesDose-Response Relationship, DrugBlood PressureMice, Inbred C57BLPhysical Conditioning, AnimalRegional Blood FlowMasseter MuscleSarcolemmaReceptors, Adrenergic, alphaHeartRats, Inbred StrainsGene Expression RegulationSignal TransductionDiaphragmAgingVasoconstrictionElectromyographyPhysical EnduranceGlucose Transporter Type 4Psoas MusclesAdenosine TriphosphateSarcomeresDopamine beta-HydroxylaseSkeletal Muscle MyosinsAdrenergic alpha-AntagonistsMyogeninDystrophinMolecular Sequence DataCitrate (si)-SynthaseCreatine KinaseIntercostal MusclesMasticatory MusclesEnergy MetabolismFacial MusclesRyanodine Receptor Calcium Release Channel