Muscle StrengthHypertrophyMuscle Strength DynamometerMusclesMuscle, SkeletalRespiratory MusclesMuscle WeaknessHypertrophy, Left VentricularCardiomegalyMuscle ProteinsMuscle ContractionHand StrengthIsometric ContractionMuscle Fibers, SkeletalMuscle, SmoothMuscle, Smooth, VascularQuadriceps MuscleResistance TrainingMuscle DevelopmentTensile StrengthMuscle FatigueKneeTorqueWeight LiftingPhysical EnduranceMuscle Fibers, Fast-TwitchExercise TherapyAbdominal MusclesHypertrophy, Right VentricularMuscle Fibers, Slow-TwitchMyocardiumNeck MusclesBreathing ExercisesElectromyographySarcopeniaMuscle DenervationBiomechanical PhenomenaMuscular AtrophyInspiratory CapacityPhysical FitnessMaximal Voluntary VentilationLegExerciseMuscle, StriatedNeuromuscular DiseasesTime FactorsKnee JointRange of Motion, ArticularThighMuscular DiseasesAgingMyocytes, Smooth MuscleShear StrengthOrgan SizeOculomotor MusclesMitochondria, MuscleInhalationWalkingPostural BalanceExercise TestMuscle RelaxationMyocytes, CardiacExercise ToleranceMyosin Heavy ChainsPapillary MusclesMuscle CellsMuscle SpindlesLower ExtremityMuscle Stretching ExercisesMusculoskeletal Physiological PhenomenaBody CompositionGaitRats, Sprague-DawleyCells, CulturedDiaphragmBody WeightAnalysis of VarianceMobility LimitationHeartPhysical Education and TrainingMasseter MuscleMuscular Dystrophy, DuchenneRespiratory Function TestsMuscle SpasticityStress, MechanicalMyostatinPressureDisease Models, AnimalAdaptation, PhysiologicalCompressive StrengthHipOxygen ConsumptionHeart VentriclesSatellite Cells, Skeletal MusclePhysical ExertionMotor ActivityRats, WistarAnkle JointEchocardiographyMasticatory Muscles