Exercise TestMusclesExercise TherapyMuscle, SkeletalExerciseExercise ToleranceMuscle ProteinsMuscle ContractionMuscle, SmoothPhysical ExertionMuscle Fibers, SkeletalRange of Motion, ArticularMuscle, Smooth, VascularBiomechanical PhenomenaMuscle DevelopmentMuscle FatigueElectromyographyKnee JointOxygen ConsumptionPhysical EnduranceNeck MusclesMuscle Fibers, Fast-TwitchQuadriceps MuscleIsometric ContractionMovementMuscle Fibers, Slow-TwitchMuscle DenervationContractureMitochondria, MuscleMuscle WeaknessMuscle Stretching ExercisesTorqueMyocytes, Smooth MuscleTime FactorsAbdominal MusclesKneeRespiratory MusclesLegWeight-BearingMuscle SpindlesPostureMuscle RelaxationOculomotor MusclesRunningBicyclingHeart RateElbow JointMuscle, StriatedRestResistance TrainingPapillary MusclesElbowPhysical FitnessMuscular AtrophyPectoralis MusclesArthrometry, ArticularLactic AcidGlycogenMuscular DiseasesMuscle CellsHindlimbWalkingMuscle StrengthGaitMasseter MuscleArthroplasty, Replacement, KneeFacial MusclesAnaerobic ThresholdElectric StimulationAdaptation, PhysiologicalAnalysis of VarianceRotationIntercostal MusclesKnee ProsthesisMasticatory MusclesAnkle JointThighArmPulmonary Gas ExchangeTendonsReflexEnergy MetabolismRegional Blood FlowTreatment OutcomeSatellite Cells, Skeletal MusclePhysical Education and TrainingPosterior Cruciate LigamentWeight LiftingHip JointBreathing ExercisesBlood PressureLocomotionMotor NeuronsPhosphocreatineMotor ActivityJoint InstabilityHand StrengthReflex, StretchCadaverAging