MusclesMuscle ProteinsMuscle, SmoothMuscle, SkeletalMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle DevelopmentMuscle ContractionMuscle FatigueMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchMyocytes, Smooth MuscleMitochondria, MuscleNeck MusclesOculomotor MusclesMuscle, StriatedMuscle WeaknessMuscle SpindlesMuscle RelaxationRespiratory MusclesPapillary MusclesAbdominal MusclesQuadriceps MuscleMuscle CellsMasseter MuscleMasticatory MusclesFacial MusclesElectromyographyIntercostal MusclesMuscular AtrophyTime FactorsIsometric ContractionSatellite Cells, Skeletal MuscleMuscular DiseasesPectoralis MusclesSymptom AssessmentDepressionPsoas MusclesTemporal MuscleMyofibrilsHindlimbRabbitsElectric StimulationCells, CulturedCalciumMyosin Heavy ChainsPharyngeal MusclesBiomechanical PhenomenaDiaphragmSeverity of Illness IndexQuestionnairesMuscle CrampMotor NeuronsGlycogenNeuromuscular JunctionTreatment OutcomeRats, Sprague-DawleyRNA, MessengerMuscular Dystrophy, AnimalMyoblastsBehavioral SymptomsActinsRats, WistarPsychiatric Status Rating ScalesLegExercisePhysical ExertionRegenerationMice, Inbred mdxMuscle RigiditySarcomeresMyostatinAgingMyoD ProteinMuscle Stretching ExercisesMyocardiumProspective StudiesFollow-Up StudiesHypertrophyQuality of LifeAnalysis of VarianceMice, Inbred C57BLSignal TransductionPhysical EnduranceInsulinTendonsGene Expression RegulationCreatine KinaseDystrophinDose-Response Relationship, DrugFatigueMolecular Sequence DataImmunohistochemistryAortaCatsAffective SymptomsMyoblasts, SkeletalKineticsHindlimb Suspension