Muscle, SkeletalElectromyographyQuadriceps MuscleArmMusclesMuscle Fibers, SkeletalMuscle ContractionMuscle ProteinsMuscle FatigueExerciseMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchThighBicyclingMitochondria, MuscleIsometric ContractionPhysical EnduranceWeight LiftingMyosin Heavy ChainsLegKneeMuscle, SmoothSciatic NerveOxygen ConsumptionCitrate (si)-SynthasePhysical ExertionGlycogenTenodesisMuscle, Smooth, VascularMuscular AtrophyMuscle DevelopmentTorquePeripheral NervesFemoral NerveBed RestAnaerobic ThresholdKnee JointTendonsResistance TrainingNerve FibersBiomechanical PhenomenaRunningLactic AcidBiopsyElbowOptic NerveExercise TestMuscular DiseasesMuscle StrengthElectric StimulationAdaptation, PhysiologicalMotor NeuronsHindlimbPhysical Education and TrainingNerve RegenerationRespiratory MusclesTime FactorsSupinationIsotonic ContractionNerve BlockSural NerveTendon InjuriesPulmonary Gas ExchangeAgingMuscle DenervationMyofibrilsRecruitment, NeurophysiologicalPatellofemoral Pain SyndromePhosphocreatineTibial NervePhysical FitnessSpectroscopy, Near-InfraredMuscle WeaknessNerve EndingsMuscle SpindlesSatellite Cells, Skeletal MuscleWeightlessness CountermeasuresMyostatinEnergy MetabolismSpinal NervesMedian NerveMyocytes, Smooth MuscleInsulinLocomotionFacial NerveNerve CrushRNA, MessengerDiaphragmPeripheral Nerve InjuriesPatellaOculomotor MusclesNeck MusclesAnalysis of VarianceUlnar NerveReflex, StretchMovementArm InjuriesReference ValuesGaitElbow Joint