AthletesSteroidsSportsAthletic InjuriesTrack and FieldAthletic PerformanceDoping in SportsSports MedicineFemale Athlete Triad SyndromeGonadal Steroid HormonesReceptors, SteroidPhysical EnduranceRunningMartial ArtsAnabolic AgentsBrain ConcussionBasketballPhysical Education and TrainingSoccerWrestlingBaseballFootballPerformance-Enhancing SubstancesSteroid 21-HydroxylaseTennisCardiomegaly, Exercise-InducedVolleyballProgesteroneAmenorrheaEstradiolBicyclingTestosteroneExerciseRacquet SportsFractures, StressKnee InjuriesGlucocorticoidsEpitestosteroneCumulative Trauma DisordersWeight LiftingSteryl-SulfataseDehydroepiandrosteronePregnanesSkiingSteroid HydroxylasesAdrenal Cortex HormonesAnterior Cruciate LigamentPregnenoloneSports EquipmentSprains and StrainsDeath, Sudden, CardiacPrednisoloneNandrolonePhysical FitnessAsthma, Exercise-InducedEstranesPhysical ExertionEtiocholanoloneAndrogensAndrostanesAnkle InjuriesAndrosteroneSkatingLeg InjuriesMethylprednisoloneUniversitiesExercise TestSteroid IsomerasesTendinopathyAndrostenedioneSpondylolysisSwimmingDexamethasoneTime FactorsDihydrotestosteronePregnanoloneMethandrostenoloneHormonesSteroid 11-beta-HydroxylaseOxygen ConsumptionEstrogensAnti-Inflammatory AgentsHydrocortisoneAltitudeCardiomyopathy, HypertrophicReceptors, GlucocorticoidWheelchairsHockeyMuscle, SkeletalHydroxyprogesteronesFoot InjuriesBiomechanical PhenomenaPatellofemoral Pain SyndromeAdaptation, Physiological3-Oxo-5-alpha-Steroid 4-DehydrogenaseStudentsCompetitive BehaviorSteroids, BrominatedSubstance Abuse DetectionEstrone