Isometric ContractionMuscle StrengthTorqueElectromyographyMuscle, SkeletalMuscle FatigueMuscle ContractionQuadriceps MuscleRecruitment, NeurophysiologicalKneeMusclesMotor NeuronsVolitionFemoral NerveElectric StimulationElbowMuscle Strength DynamometerBiomechanical PhenomenaMuscle WeaknessLegHandPhysical EnduranceMaximal Voluntary VentilationHand StrengthTime FactorsIsotonic ContractionPhysical ExertionMuscle Fibers, SkeletalRespiratory MusclesThighExerciseMuscle, SmoothKnee JointMuscle, Smooth, VascularMuscle RelaxationMusculoskeletal Physiological PhenomenaEvoked Potentials, MotorAnkle JointMuscle ProteinsResistance TrainingMyocardial ContractionElbow JointMovementArmPapillary MusclesFingersWeight LiftingSarcomeresForearmPsoas MusclesUterine ContractionMotor CortexStress, MechanicalTendonsMuscle SpindlesAdaptation, PhysiologicalAnalysis of VarianceThumbAbdominal MusclesWeight-BearingVoluntary ProgramsReflex, StretchRange of Motion, ArticularPhosphocreatineAgingBreathing ExercisesCalciumMuscle DevelopmentMyosinsVibrationAnkleH-ReflexTensile StrengthReflexTranscranial Magnetic StimulationAction PotentialsHeart RateExercise TherapyExercise TestOxygen ConsumptionPostureMuscle Fibers, Fast-TwitchRana temporariaLower ExtremityMyofibrilsVasoconstrictionRabbitsPhysical FitnessElasticityPeroneal NerveFootMasseter MuscleMotor ActivityMuscle Fibers, Slow-TwitchNeck MusclesBlood PressureMyographyRunning