FatigueMuscle FatigueSleep DeprivationFatigue Syndrome, ChronicMental FatigueSensory DeprivationWater DeprivationFood DeprivationPsychosocial DeprivationCultural DeprivationMaternal DeprivationAndrogen AntagonistsPoverty AreasTime FactorsMuscle, SkeletalSleepQuality of LifeMuscle ContractionIsometric ContractionQuestionnairesWakefulnessSeverity of Illness IndexVision, MonocularSleep DisordersGlucoseElectromyographyPhysical EnduranceEnglandSmall-Area AnalysisSocioeconomic FactorsProstatic NeoplasmsFibromyalgiaAnalysis of VarianceNeoplasmsDepressionTreatment OutcomePovertyCulture Media, Serum-FreeAsthenopiaPainSleep StagesDominance, OcularOrchiectomyScotlandArousalExerciseTorqueDisorders of Excessive SomnolenceWork Schedule ToleranceRats, Sprague-DawleySleep, REMCircadian RhythmCell HypoxiaElectric StimulationCritical Period (Psychology)OxygenDiaphragmNeuronsCensusesCross-Sectional StudiesEnergy MetabolismPhysical ExertionAffectMuscle StrengthApoptosisPostpoliomyelitis SyndromeMotor ActivityChronic DiseaseAnoxiaNeurastheniaAnxietyStress, PsychologicalResidence CharacteristicsRats, WistarSocial ClassElectroencephalographyAndrogensRisk FactorsPrevalenceRNA, MessengerDose-Response Relationship, DrugAnimals, NewbornSurvivorsCell SurvivalHealth StatusPsychomotor PerformancePaternal DeprivationChild, InstitutionalizedVisual CortexProtein DeficiencyCells, CulturedQuadriceps MuscleGreat BritainExercise TherapyNeuronal PlasticityProspective StudiesPain MeasurementMultiple SclerosisMaterials TestingRegression Analysis