Isometric ContractionExercisePhysical ExertionExercise TestLaser-Doppler FlowmetryChoroidHeart RateHand StrengthExercise TherapyBlood PressureMuscle, SkeletalMuscle ContractionRegional Blood FlowMuscle FatigueIntraocular PressureExercise ToleranceTonometry, OcularElectromyographyLegBlood Flow VelocityReflexMusclesCardiac OutputSympathetic Nervous SystemCross-Over StudiesFovea CentralisHemodynamicsTime FactorsPhysical EnduranceHeartOxygen ConsumptionVascular ResistanceCold TemperatureElectric StimulationReceptor, Endothelin ATorqueDouble-Blind MethodPeptides, CyclicIsotonic ContractionMuscle StrengthElectrocardiographyHypertensionRestBicyclingMuscle Stretching ExercisesPhysical FitnessRunningBiomechanical PhenomenaKneeResistance TrainingQuadriceps MuscleLactic AcidAnaerobic ThresholdMuscle Fibers, SkeletalPulmonary Gas ExchangePhysical Education and TrainingAdaptation, PhysiologicalEnergy MetabolismSarcomeresMuscle RelaxationWeight LiftingBreathing ExercisesElbowAnalysis of VariancePhosphocreatineRana temporariaGlycogenMyocardial ContractionVolitionMuscle Strength DynamometerMusculoskeletal Physiological PhenomenaThighForearmAsthma, Exercise-InducedOxygenArmExercise Movement TechniquesVasoconstrictionPsoas MusclesErgometryWalkingSportsVasodilationMyosinsMotor ActivityRespirationAgingPapillary MusclesKnee JointLactatesRecruitment, NeurophysiologicalStress, MechanicalMovementCardiovascular Physiological PhenomenaRange of Motion, ArticularMuscle Fibers, Fast-TwitchTreatment OutcomeBody WeightCalciumNorepinephrine