Muscle StrengthMuscle Strength DynamometerMusclesMuscle, SkeletalRespiratory MusclesMuscle WeaknessHand StrengthMuscle ContractionMuscle ProteinsIsometric ContractionMuscle, SmoothMuscle Fibers, SkeletalQuadriceps MuscleMuscle, Smooth, VascularResistance TrainingMuscle DevelopmentTensile StrengthMuscle FatigueKneeTorqueExercise TherapyWeight LiftingAbdominal MusclesPhysical EnduranceMuscle Fibers, Fast-TwitchNeck MusclesBreathing ExercisesElectromyographyMuscle Fibers, Slow-TwitchSarcopeniaInspiratory CapacityMuscle DenervationMaximal Voluntary VentilationBiomechanical PhenomenaPhysical FitnessMuscle, StriatedNeuromuscular DiseasesLegRange of Motion, ArticularKnee JointExerciseThighShear StrengthMuscular AtrophyOculomotor MusclesMyocytes, Smooth MuscleMuscular DiseasesMitochondria, MuscleInhalationWalkingPostural BalanceAgingMuscle RelaxationExercise TestExercise ToleranceTime FactorsMuscle SpindlesLower ExtremityMuscle Stretching ExercisesMusculoskeletal Physiological PhenomenaGaitPapillary MusclesBody CompositionDiaphragmMobility LimitationRespiratory Function TestsMuscle SpasticityMuscular Dystrophy, DuchenneMuscle CellsPhysical Education and TrainingCompressive StrengthHipMasseter MuscleAnkle JointMotor ActivityMasticatory MusclesOxygen ConsumptionMyositisFacial MusclesActivities of Daily LivingAnalysis of VarianceIntercostal MusclesArmElectric StimulationElbowElectric Stimulation TherapyPostpoliomyelitis SyndromeStress, MechanicalWeight-BearingOsteoarthritis, KneeSatellite Cells, Skeletal MuscleVital CapacityTreatment OutcomeRecovery of FunctionMyosin Heavy ChainsMaterials TestingDermatomyositisPhysical ExertionPhysical Therapy ModalitiesTendons