Muscle ContractionMuscle, SkeletalMuscle Fibers, SkeletalIsometric ContractionMusclesTroponin CTroponinMuscle ProteinsMyosinsTropomyosinMuscle FatigueRabbitsCalciumMuscle, SmoothElectric StimulationRegional Blood FlowMuscle, Smooth, VascularActinsMuscle DevelopmentActin CytoskeletonMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMitochondria, MuscleMyofibrilsMuscle RelaxationMyocardial ContractionUterine ContractionSarcomeresIntermediate Filament ProteinsMuscle DenervationElectromyographySatellite Cells, Skeletal MuscleMuscular AtrophyMuscle, StriatedCytoskeletonMuscular DiseasesHindlimbTime FactorsMicrofilament ProteinsMuscle SpindlesAdenosine TriphosphateRats, Sprague-DawleyRats, WistarActomyosinKineticsMyocytes, Smooth MuscleModels, BiologicalMyosin Heavy ChainsMuscle CellsGuinea PigsQuadriceps MuscleCells, CulturedTracheaMyocardiumGlycogenBiomechanical PhenomenaVasoconstrictionMyosin Light ChainsMyosin SubfragmentsPhosphorylationSarcoplasmic ReticulumMolecular Sequence DataPotassium ChloridePhysical ExertionMuscle WeaknessMyoblastsDesminChickensPsoas MusclesPapillary MusclesDiaphragmMotor NeuronsVimentinIsotonic ContractionDose-Response Relationship, DrugNeck MusclesOculomotor MusclesRNA, MessengerAmino Acid SequenceInsulinSignal TransductionExerciseAcetylcholineRespiratory MusclesNeuromuscular JunctionAbdominal MusclesGlucosePeristalsisSarcolemmaPhalloidineCaffeineDogsStress, MechanicalMyoblasts, SkeletalRyanodine Receptor Calcium Release ChannelMuscular Dystrophy, AnimalOxygen ConsumptionPhysical Conditioning, AnimalTorquePhysical Endurance