title: Endocrine profiles in 693 elite athletes in the postcompetition setting.
abstract: OBJECTIVE
  To measure a profile of hormones in a group of elite athletes. Increasing awareness of the widespread use of hormones as performance-enhancing agents focusses attention on what may be considered as normal in this unusual group.
  
  
  METHODS
  Blood samples were obtained from 813 volunteer elite athletes from a cross-section of 15 sporting categories. An endocrine profile was measured on a subset of 693.
  
  
  METHODS
  Volunteer elite athletes. Samples were drawn within two hours of an event at a major national or international competition.
  
  
  METHODS
  Demographics and hormone profiles were obtained on 454 male and 239 female elite athletes.
  
  
  RESULTS
  Hormone profiles showed significant differences in 19 of the 24 measured variables between sexes and between all of the 15 sporting disciplines in men and 11 out of 24 in women. 16.5% of men had low testosterone levels, whereas 13.7% of women had high levels with complete overlap between the sexes. Women had a lean body mass 85% that of men - sufficient to account for sex differences in performance. There were highly significant correlations between many of the measured hormones.
  
  
  CONCLUSIONS
  Hormone profiles from elite athletes differ from usual reference ranges. Individual results are dependent on a number of factors including age, gender and physique. Differences in profiles between sports suggest that an individual's profile may contribute to his/her proficiency in a particular sport. The IOC definition of a woman as one who has a 'normal' testosterone level is untenable.
authors.affiliation: Department of Endocrinology, St James's Hospital, Dublin, Ireland.
authors.forename: M L
authors.initials: ML
authors.lastname: Healy
authors.forename: J
authors.initials: J
authors.lastname: Gibney
authors.forename: C
authors.initials: C
authors.lastname: Pentecost
authors.forename: M J
authors.initials: MJ
authors.lastname: Wheeler
authors.forename: P H
authors.initials: PH
authors.lastname: Sonksen
mesh_terms: D000328:Adult; D056352:Athletes; D003430:Cross-Sectional Studies; D004703:Endocrine System / Q000378:metabolism*; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D006728:Hormones / Q000097:blood*; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D011388:Prolactin / Q000097:blood; D011956:Receptors, Cell Surface / Q000097:blood; D013177:Sports / Q000502:physiology*; D013739:Testosterone / Q000097:blood; D013972:Thyrotropin / Q000097:blood; D014284:Triiodothyronine / Q000097:blood; D055815:Young Adult
chemical_list: D006728:Hormones; D011956:Receptors, Cell Surface; C063572:sex hormone-binding globulin receptor; D014284:Triiodothyronine; D013739:Testosterone; D011388:Prolactin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; D013972:Thyrotropin; D006854:Hydrocortisone