Muscle ContractionMuscle, SkeletalSarcomeresConnectinMuscle ProteinsMuscle Fibers, SkeletalMusclesStress, MechanicalIsometric ContractionTropomyosinTroponinTroponin CMyosinsMyofibrilsRabbitsCalciumMuscle, SmoothMuscle FatigueActinsElectric StimulationMuscle DevelopmentMuscle, Smooth, VascularMuscle Fibers, Fast-TwitchMyocardial ContractionCroupPsoas MusclesMuscle Fibers, Slow-TwitchMyosin SubfragmentsPenile IndurationMitochondria, MuscleTropomodulinMuscle RelaxationMyocardiumTroponin IActin CytoskeletonActomyosinMuscle DenervationUterine ContractionSatellite Cells, Skeletal MuscleMuscular AtrophyMuscular DiseasesMyosin Heavy ChainsRana temporariaTime FactorsTroponin TAcetylgalactosamineElectromyographyBiomechanical PhenomenaChickensModels, BiologicalAnuraHindlimbMyopathies, NemalineAdenosine TriphosphateRats, Sprague-DawleyMicrofilament ProteinsCytoskeletonIsotonic ContractionMuscle CellsMuscle SpindlesPapillary MusclesCells, CulturedRana pipiensRats, WistarMyocytes, Smooth MuscleQuadriceps MuscleMuscle WeaknessSarcoplasmic ReticulumActininHeartChlamydiaceae InfectionsGlycogenPhosphorylationCalmodulin-Binding ProteinsGuinea PigsMyoblastsMolecular Sequence DataElasticityMyosin Light ChainsDesminVasoconstrictionCa(2+) Mg(2+)-ATPaseRNA, MessengerPhysical ExertionDiaphragmOculomotor MusclesProtein IsoformsProtein BindingNeck MusclesAmino Acid SequenceInsulinTracheaSarcolemmaRespiratory MusclesPotassium ChlorideMyoblasts, SkeletalDose-Response Relationship, DrugSignal TransductionIntermediate Filament ProteinsMotor Neurons