Muscle ContractionMuscle, SkeletalMusclesMuscle Fibers, SkeletalIsometric ContractionMuscle ProteinsTroponin CTroponinMuscle FatigueMuscle, SmoothMyosinsTropomyosinRabbitsCalciumElectric StimulationMuscle, Smooth, VascularMuscle DevelopmentRegional Blood FlowMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchActinsMitochondria, MuscleMuscle DenervationActin CytoskeletonMuscle RelaxationMyofibrilsMuscle, StriatedElectromyographyMyocytes, Smooth MuscleSatellite Cells, Skeletal MuscleMuscle SpindlesMuscular AtrophySarcomeresMyocardial ContractionMuscular DiseasesMuscle CellsNeck MusclesQuadriceps MuscleOculomotor MusclesMuscle WeaknessHindlimbPapillary MusclesUterine ContractionTime FactorsIntermediate Filament ProteinsRespiratory MusclesMyosin Heavy ChainsAbdominal MusclesRats, Sprague-DawleyCells, CulturedCytoskeletonRats, WistarBiomechanical PhenomenaGlycogenPsoas MusclesAdenosine TriphosphateKineticsModels, BiologicalGuinea PigsMyocardiumFacial MusclesMicrofilament ProteinsTracheaMyoblastsDiaphragmMotor NeuronsPhysical ExertionMasticatory MusclesPhosphorylationMasseter MuscleSarcoplasmic ReticulumMolecular Sequence DataRNA, MessengerVasoconstrictionIntercostal MusclesDesminChickensMyosin SubfragmentsNeuromuscular JunctionPotassium ChlorideActomyosinInsulinExerciseSignal TransductionDose-Response Relationship, DrugMuscular Dystrophy, AnimalAmino Acid SequenceMyosin Light ChainsAcetylcholineMyoblasts, SkeletalGlucoseSarcolemmaPectoralis MusclesVimentinDogsOxygen ConsumptionPhysical EnduranceStress, MechanicalMice, Inbred C57BLMyoD Protein