title: Plasma cortisol and testosterone following 19-km and 42-km kayak races.
abstract: Plasma cortisol and testosterone levels were examined in five, elite, male kayakers before and after 19-km and 42-km kayak races. Both races resulted in significant elevation in plasma cortisol and observed increase is likely to depend on race duration, being much more pronounced after 42-km race compared to 19-km. It should be stressed that observed elevation in cortisol level after 42-km race was higher than reported previously after a marathon run. This finding is in line with reports on hormonal changes in response to arms exercise. Both contests caused a decrease in plasma testosterone level, but the difference between races was not significant. Testosterone/cortisol ratio dropped significantly immediately after the races and the observed decrease was more dominant after the 42-km distance. On the next day, 18 h after the races plasma cortisol, testosterone levels and T/C ratio returned to basal level indicating recuperation from post exercise changes.
authors.affiliation: Department of Biochemistry, Institute of Sport, Warsaw, Poland.
authors.forename: G
authors.initials: G
authors.lastname: Lutoslawska
authors.forename: Z
authors.initials: Z
authors.lastname: Obminski
authors.forename: A
authors.initials: A
authors.lastname: Krogulski
authors.forename: W
authors.initials: W
authors.lastname: Sendecki
mesh_terms: D000328:Adult; D015444:Exercise / Q000502:physiology*; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D008297:Male; D013177:Sports; D013739:Testosterone / Q000097:blood*; D013997:Time Factors
chemical_list: D013739:Testosterone; D006854:Hydrocortisone