MusclesMuscle ProteinsMuscle, SmoothMuscle, SkeletalMuscle, Smooth, VascularMuscle Fibers, SkeletalMuscle DevelopmentMuscle ContractionMuscle FatigueMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleMitochondria, MuscleNeck MusclesOculomotor MusclesMuscle, StriatedMuscle Spindlesp38 Mitogen-Activated Protein KinasesMuscle RelaxationRespiratory MusclesMuscle WeaknessPapillary MusclesAbdominal MusclesMuscle CellsQuadriceps MuscleMitogen-Activated Protein KinasesMAP Kinase Signaling SystemMasseter MuscleFacial MusclesMasticatory MusclesIntercostal MusclesElectromyographyMuscular AtrophyCells, CulturedIsometric ContractionSignal TransductionSatellite Cells, Skeletal MusclePhosphorylationPectoralis MusclesMuscular DiseasesEnzyme ActivationPsoas MusclesTime FactorsMyofibrilsRabbitsHindlimbTemporal MuscleCalciumElectric StimulationRNA, MessengerRats, Sprague-DawleyMitogen-Activated Protein Kinase 1Myosin Heavy ChainsEnzyme InhibitorsPharyngeal MusclesMitogen-Activated Protein Kinase KinasesDiaphragmMitogen-Activated Protein Kinase 3Biomechanical PhenomenaGlycogenMotor NeuronsMyoblastsGene Expression RegulationNeuromuscular JunctionActinsRats, WistarImidazolesMuscular Dystrophy, AnimalBlotting, WesternPyridinesMuscle CrampModels, BiologicalMyocardiumMice, Inbred C57BLCell LineRegenerationCell DifferentiationMyoD ProteinSarcomeresMyostatinMice, Inbred mdxMolecular Sequence DataDose-Response Relationship, DrugLegPhysical ExertionExtracellular Signal-Regulated MAP KinasesImmunohistochemistryInsulinKineticsMuscle Stretching ExercisesExerciseHypertrophyCalcium-Calmodulin-Dependent Protein KinasesMuscle RigidityMitogen-Activated Protein Kinase 14Protein-Serine-Threonine KinasesMyoblasts, SkeletalMice, KnockoutJNK Mitogen-Activated Protein Kinases