Muscle, SkeletalAdaptation, PhysiologicalMuscle StrengthNADH Tetrazolium ReductaseMuscle Fibers, SkeletalPhysical Conditioning, AnimalMuscle ContractionMyosin Heavy ChainsCitrate (si)-SynthaseMusclesPhysical EnduranceExerciseMuscle ProteinsMuscle Strength DynamometerRespiratory MusclesMuscle WeaknessMuscular AtrophyMuscle, SmoothResistance TrainingMuscle DevelopmentMuscle, Smooth, VascularHand StrengthIsometric ContractionMuscle Fibers, Fast-TwitchTensile StrengthMuscle FatigueQuadriceps MuscleMuscle Fibers, Slow-TwitchHypertrophyMitochondria, MusclePhysical ExertionMuscle DenervationMuscular DiseasesSatellite Cells, Skeletal MuscleNeck MusclesAbdominal MusclesMuscle, StriatedShear StrengthTorqueElectromyographyTime FactorsOculomotor MusclesMyocytes, Smooth MuscleKneeBiomechanical PhenomenaWeight LiftingMuscle RelaxationSignal TransductionSarcopeniaMuscle CellsMuscle SpindlesAdaptation, OcularLegAgingRabbitsTranscription FactorsExercise TherapyPapillary MusclesMyofibrilsThighDiaphragmNeuromuscular DiseasesCalciumElectric StimulationHindlimbPhysical FitnessAdaptation, BiologicalOxygen ConsumptionGlycogenMasseter MuscleBreathing ExercisesCompressive StrengthMyoblastsMyostatinMasticatory MusclesMice, Inbred mdxMuscular Dystrophy, DuchenneFacial MusclesKnee JointMuscular Dystrophy, AnimalStress, MechanicalIntercostal MusclesRNA, MessengerCells, CulturedRange of Motion, ArticularInspiratory CapacityExercise TestBody CompositionWalkingKineticsMaximal Voluntary VentilationPsoas MusclesRats, Sprague-DawleyMuscle Stretching ExercisesExercise ToleranceMyoblasts, SkeletalInsulinPostural BalancePectoralis MusclesAnalysis of Variance