Isometric ContractionTorqueElectromyographyMuscle, SkeletalMuscle FatigueMuscle ContractionMuscle StrengthQuadriceps MuscleRecruitment, NeurophysiologicalKneeMotor NeuronsVolitionFemoral NerveElectric StimulationMusclesElbowBiomechanical PhenomenaHandLegIsotonic ContractionTime FactorsPhysical EnduranceMaximal Voluntary VentilationMyocardial ContractionPhysical ExertionThighUterine ContractionExerciseMuscle WeaknessHand StrengthKineticsMuscle Fibers, SkeletalBlood Flow VelocityMuscle, SmoothEvoked Potentials, MotorCalciumKnee JointMuscle RelaxationFingersForearmSarcomeresMovementElbow JointAnkle JointMotor CortexMusculoskeletal Physiological PhenomenaMyosinsVasoconstrictionMuscle Strength DynamometerThumbArmReflex, StretchVoluntary ProgramsRabbitsPapillary MusclesStress, MechanicalAdenosine TriphosphatePhosphocreatinePsoas MusclesAction PotentialsH-ReflexReflexHeart RateDose-Response Relationship, DrugTendonsAdaptation, PhysiologicalTranscranial Magnetic StimulationAnalysis of VarianceBlood PressureMuscle, Smooth, VascularRana temporariaAnkleMyographyMuscle SpindlesGuinea PigsRats, Sprague-DawleyPotassium ChlorideWeight-BearingFootPeroneal NerveElasticityVibrationRegional Blood FlowPhenylephrineMyofibrils