title: The effect of high level tennis matches on urine steroid profiles in professional tennis players.
abstract: OBJECTIVE
  Modern day, tennis matches are characterized by shorter and more intense efforts with players enduring great physical and psychological stress. The aim of this study was to evaluate acute changes in the urinary steroid profile of elite tennis players following professional tournament matches.
  
  
  METHODS
  Eight professional male tennis players participated in this study. Urine samples were collected before and after tennis matches corresponding to the quarter finals of the Spanish Tennis Masters.
  
  
  RESULTS
  After the match, there was a significant fall (P<0.05) in testosterone, androsterone, etiocholanolone, and dehydroepiandrosterone (DHEA). Cortisone increased whereas tetrahydrocortisone (THE) decreased. The anabolic/catabolic hormone ratio also decreased, although only the fall in total suprarenal androgen (TSA)/total corticosteroid (TC) and DHEA/(THE+THF) ratios had a significant decrease (P<0.05).
  
  
  CONCLUSIONS
  These results indicate that a professional tennis match modifies the urine steroid profiles of players, increasing corticosteroid and decreasing androgen excretion in urine, suggesting an important adrenal activation.
authors.affiliation: Department of Physical Education and Sport. Sport Sciences School, University of Extremadura, Cáceres, Spain. diegomun@unex.es
authors.forename: D
authors.initials: D
authors.lastname: Muñoz
authors.forename: F
authors.initials: F
authors.lastname: Toribio
authors.forename: R
authors.initials: R
authors.lastname: Timón
authors.forename: G
authors.initials: G
authors.lastname: Olcina
authors.forename: J I
authors.initials: JI
authors.lastname: Maynar
authors.forename: M
authors.initials: M
authors.lastname: Maynar
mesh_terms: D000305:Adrenal Cortex Hormones / Q000652:urine*; D000328:Adult; D006801:Humans; D008297:Male; D005082:Physical Exertion / Q000502:physiology*; D013715:Tennis / Q000502:physiology*; D045165:Testosterone Congeners / Q000652:urine*; D055815:Young Adult
chemical_list: D000305:Adrenal Cortex Hormones; D045165:Testosterone Congeners