Isometric ContractionTorqueElectromyographyMuscle, SkeletalMuscle StrengthMuscle FatigueMuscle ContractionQuadriceps MuscleRecruitment, NeurophysiologicalKneeMotor NeuronsVolitionFemoral NerveElectric StimulationElbowMusclesHandBiomechanical PhenomenaLegIsotonic ContractionPhysical EnduranceMaximal Voluntary VentilationTime FactorsPhysical ExertionThighMyocardial ContractionUterine ContractionExerciseMuscle WeaknessHand StrengthMuscle Fibers, SkeletalMuscle, SmoothEvoked Potentials, MotorKnee JointMuscle RelaxationFingersForearmSarcomeresElbow JointAnkle JointMotor CortexMusculoskeletal Physiological PhenomenaMovementMuscle Strength DynamometerVasoconstrictionCalciumMyosinsThumbVoluntary ProgramsReflex, StretchArmPhosphocreatinePapillary MusclesH-ReflexPsoas MusclesStress, MechanicalReflexTendonsTranscranial Magnetic StimulationAction PotentialsAdaptation, PhysiologicalHeart RateMuscle, Smooth, VascularAnalysis of VarianceMyographyRana temporariaGuinea PigsPotassium ChlorideMuscle SpindlesWeight-BearingRabbitsAnkleFootBlood PressurePhenylephrinePeroneal NerveVibrationDose-Response Relationship, DrugMyofibrils