Muscle StrengthMusclesMuscle, SkeletalMuscle ContractionMuscle Strength DynamometerRespiratory MusclesMuscle ProteinsMuscle WeaknessMuscle, SmoothMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle DevelopmentIsometric ContractionMuscle FatigueHand StrengthQuadriceps MuscleMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle DenervationNeck MusclesAbdominal MusclesResistance TrainingMyocytes, Smooth MuscleMuscle, StriatedMitochondria, MuscleOculomotor MusclesTensile StrengthElectromyographyKneeTorqueMuscle RelaxationMuscle SpindlesMuscular AtrophyPhysical EndurancePapillary MusclesWeight LiftingBiomechanical PhenomenaMuscular DiseasesExercise TherapyMuscle CellsLegSarcopeniaBreathing ExercisesExerciseMasseter MuscleThighNeuromuscular DiseasesMasticatory MusclesFacial MusclesTime FactorsIntercostal MusclesPhysical FitnessInspiratory CapacityMaximal Voluntary VentilationAgingKnee JointSatellite Cells, Skeletal MuscleDiaphragmRange of Motion, ArticularMuscle Stretching ExercisesInhalationShear StrengthPectoralis MusclesWalkingPostural BalanceElectric StimulationExercise TestExercise ToleranceMyosin Heavy ChainsMusculoskeletal Physiological PhenomenaPsoas MusclesLower ExtremityMuscle SpasticityMuscular Dystrophy, DuchenneGaitBody CompositionMyofibrilsRabbitsHindlimbTemporal MuscleOxygen ConsumptionMyositisMotor NeuronsCalciumCells, CulturedPhysical ExertionMuscular Dystrophy, AnimalTendonsMice, Inbred mdxMobility LimitationStress, MechanicalMyostatinNeuromuscular JunctionPhysical Education and TrainingAnalysis of VarianceAnkle JointRespiratory Function TestsMuscular DystrophiesHipArm