AmenorrheaAthletesSportsHypothalamic DiseasesOligomenorrheaAthletic InjuriesMenstruationTrack and FieldGalactorrheaPrimary Ovarian InsufficiencyAthletic PerformanceSports MedicineMenstruation DisturbancesDoping in SportsFemale Athlete Triad SyndromeHyperprolactinemiaGonadal Dysgenesis, 46,XYPhysical EnduranceRunningAnovulationMenstrual CycleMartial ArtsPremenopauseBrain ConcussionMenorrhagiaFollicle Stimulating HormoneBasketballPhysical Education and TrainingSoccerWrestlingOvarian Function TestsCerebral AqueductAnorexia NervosaTokyoAcneiform EruptionsHypogonadismEndometrial Ablation TechniquesEmpty Sella SyndromeBaseballFootballMenopause, PrematurePostpartum PeriodNorpregnadienesExerciseVirilismBulimia46, XX Disorders of Sex DevelopmentLuteinizing HormonePituitary DiseasesTennisCardiomegaly, Exercise-InducedOvary