Muscle ContractionMuscle, SkeletalStress, MechanicalIsometric ContractionMuscle Fibers, SkeletalMusclesTroponin CTroponinMuscle ProteinsMyosinsMuscle FatigueTropomyosinMuscle, SmoothCalciumRabbitsElectric StimulationRegional Blood FlowMuscle, Smooth, VascularUterine ContractionMyocardial ContractionActinsMuscle DevelopmentActin CytoskeletonMuscle Fibers, Fast-TwitchMuscle RelaxationMyofibrilsMuscle Fibers, Slow-TwitchMitochondria, MuscleElectromyographySarcomeresGuinea PigsVasoconstrictionMuscle DenervationTime FactorsIsotonic ContractionIntermediate Filament ProteinsTracheaSatellite Cells, Skeletal MuscleCytoskeletonRats, WistarPotassium ChlorideHindlimbRats, Sprague-DawleyMuscle, StriatedMuscular AtrophyAdenosine TriphosphateMuscular DiseasesActomyosinMuscle SpindlesMyosin Light ChainsDose-Response Relationship, DrugBiomechanical PhenomenaMyocardiumModels, BiologicalMyocytes, Smooth MuscleKineticsCells, CulturedMicrofilament ProteinsAcetylcholineMotor NeuronsPeristalsisSarcoplasmic ReticulumMyosin Heavy ChainsQuadriceps MuscleMuscle CellsPhosphorylationPhysical ExertionPapillary MusclesGlycogenMyosin SubfragmentsDogsGastrointestinal MotilityDiaphragmCaffeineUrinary BladderMuscle TonusMolecular Sequence DataTorqueVasoconstrictor AgentsMuscle WeaknessPsoas MusclesSignal TransductionChickensMyoblastsNorepinephrineCarbacholDesminrho-Associated KinasesNeuromuscular JunctionRNA, MessengerExerciseNeck MusclesPhenylephrineVimentinAmino Acid SequenceOculomotor MusclesPotassiumCatsInsulinSarcolemma