Muscle, SkeletalMusclesMuscle Fibers, SkeletalMuscle ProteinsMuscle FatigueMuscle ContractionMuscle DevelopmentMuscle Fibers, Fast-TwitchPhosphocreatineMuscle, SmoothMuscle StrengthMuscle, Smooth, VascularEnergy MetabolismTime FactorsMuscle DenervationMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleMitochondria, MuscleNeck MusclesOculomotor MusclesMuscle, StriatedMuscle SpindlesMuscle RelaxationRespiratory MusclesMuscle WeaknessPapillary MusclesAbdominal MusclesQuadriceps MuscleMuscle CellsMasseter MuscleFacial MusclesMasticatory MusclesIntercostal MusclesElectromyographyMuscular AtrophyIsometric ContractionSatellite Cells, Skeletal MusclePectoralis MusclesMuscular DiseasesPsoas MusclesMyofibrilsTemporal MuscleHindlimbRabbitsElectric StimulationCells, CulturedMyosin Heavy ChainsCalciumPharyngeal MusclesDiaphragmBiomechanical PhenomenaMotor NeuronsGlycogenNeuromuscular JunctionMuscular Dystrophy, AnimalMyoblastsRats, Sprague-DawleyRNA, MessengerMuscle CrampActinsRats, WistarRegenerationMice, Inbred mdxSarcomeresRats, Inbred SHRMyoD ProteinLegPhysical ExertionMuscle Stretching ExercisesMyocardiumMuscle RigidityExerciseHypertrophyDystrophinPhysical EnduranceMyoblasts, SkeletalAortaSignal TransductionTendonsInsulinGene Expression RegulationHindlimb SuspensionKineticsMembrane PotentialsAgingCatsMice, Inbred C57BLThighMuscle NeoplasmsCreatine KinasePterygoid MusclesGuinea PigsOxygen ConsumptionRadiotherapy, Image-GuidedSkeletal Muscle MyosinsAnuraTracheaImmunohistochemistryModels, BiologicalSarcoplasmic Reticulum