Muscle ContractionMuscle, SkeletalMuscle Fibers, SkeletalMusclesIsometric ContractionTroponin CTroponinMuscle ProteinsMyosinsTropomyosinMuscle FatigueRabbitsCalciumElectric StimulationMuscle, SmoothRegional Blood FlowMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchActinsMuscle DevelopmentMuscle, Smooth, VascularActin CytoskeletonMyofibrilsMitochondria, MuscleNerve FibersMuscle RelaxationMyocardial ContractionSarcomeresMuscle DenervationUterine ContractionIntermediate Filament ProteinsElectromyographySatellite Cells, Skeletal MuscleMuscular AtrophyCytoskeletonTime FactorsHindlimbMuscular DiseasesMuscle, StriatedMyosin Heavy ChainsMuscle SpindlesRats, Sprague-DawleyRats, WistarMicrofilament ProteinsAdenosine TriphosphateModels, BiologicalKineticsActomyosinDietary FiberBiomechanical PhenomenaGuinea PigsCells, CulturedMyocytes, Smooth MuscleQuadriceps MuscleMuscle CellsGlycogenMyocardiumTracheaMyosin Light ChainsSarcoplasmic ReticulumPsoas MusclesMyosin SubfragmentsMolecular Sequence DataPhosphorylationMotor NeuronsDiaphragmVasoconstrictionPhysical ExertionMyoblastsPotassium ChlorideMuscle WeaknessChickensIsotonic ContractionDesminOculomotor MusclesPapillary MusclesVimentinDose-Response Relationship, DrugRNA, MessengerAmino Acid SequenceNeuromuscular JunctionNeck MusclesSignal TransductionStress, MechanicalInsulinExerciseAcetylcholineDogsSarcolemmaRana temporariaCaffeineRespiratory MusclesMuscular Dystrophy, AnimalCatsAbdominal MusclesPhalloidineGlucosePeristalsisMice, Inbred C57BLMembrane Potentials