Isometric ContractionTorqueElectromyographyMuscle, SkeletalMuscle StrengthMuscle FatigueMuscle ContractionQuadriceps MuscleRecruitment, NeurophysiologicalKneeMotor NeuronsVolitionFemoral NerveElectric StimulationElbowMusclesHandBiomechanical PhenomenaLegPhysical EndurancePhysical ExertionMaximal Voluntary VentilationIsotonic ContractionTime FactorsExerciseThighMuscle WeaknessHand StrengthMuscle Fibers, SkeletalEvoked Potentials, MotorKnee JointMyocardial ContractionFingersForearmElbow JointMusculoskeletal Physiological PhenomenaAnkle JointSarcomeresUterine ContractionMuscle RelaxationMotor CortexMuscle Strength DynamometerHeart RateArmOxygen ConsumptionMovementVoluntary ProgramsMuscle, SmoothPhosphocreatinePsoas MusclesThumbMyosinsAdaptation, PhysiologicalReflex, StretchTranscranial Magnetic StimulationH-ReflexExercise TestStress, MechanicalCalciumPapillary MusclesTendonsReflexAnalysis of VarianceAction PotentialsWeight-BearingVasoconstrictionBlood PressureRana temporariaAnkleFootPeroneal NerveBicyclingRunningRegional Blood FlowVibrationMuscle SpindlesMyography