Muscle Fibers, SkeletalMuscle, SkeletalMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMyosin Heavy ChainsMusclesMuscle ContractionMuscle ProteinsMuscle DevelopmentRana temporariaMyofibrilsMitochondria, MuscleIsometric ContractionMuscle DenervationMuscle FatigueMuscle, SmoothRana pipiensCalciumPsoas MusclesSarcomeresNerve FibersMuscular DiseasesMuscular AtrophyMuscle, Smooth, VascularSatellite Cells, Skeletal MuscleSarcoplasmic ReticulumExerciseGlycogenRabbitsQuadriceps MuscleMyosinsAnuraSarcolemmaElectric StimulationRanidaeTime FactorsMuscle RelaxationNeuromuscular JunctionMembrane PotentialsMice, Inbred mdxRana esculentaMuscular Dystrophy, AnimalMyoblastsCaffeineNADH Tetrazolium ReductaseMuscle CellsHindlimbDietary FiberMuscle SpindlesDystrophinOculomotor MusclesDiaphragmPhysical ExertionKineticsMuscle, StriatedPhosphocreatineTroponin CRegenerationMuscle WeaknessMotor NeuronsPhysical EnduranceCitrate (si)-SynthaseRNA, MessengerOxygen ConsumptionCells, CulturedAdenosine TriphosphateMuscular DystrophiesInsulinModels, BiologicalElectromyographyRats, WistarAction PotentialsTroponinThoracicaMotor EndplateHistocytochemistryProtein IsoformsNeck MusclesLegBiomechanical PhenomenaMasseter MuscleMyocytes, Smooth MuscleCreatine KinaseElectrophysiologyActinsMyostatinTetracaineIsotonic ContractionMyoD ProteinHypertrophyNaphthalenesulfonatesAgingArsenazo IIIRespiratory MusclesImmunohistochemistryMineral FibersMicroscopy, ElectronBiopsyGene Expression RegulationGlucose