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GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE
A Journal on Internal Medicine and Pharmacology
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Gazzetta Medica Italiana Archivio per le Scienze Mediche 2010 October;169(5):221-6
Base hormone concentrations and swimmer’s performance during training
Tucher G., Gomes A. L. M., Radler De A. Neto F., Dantas E. H. M.
1 Human Movement Biosciences, Laboratory (LABIMH), Castelo Branco University (UCB), Rio de Janeiro, Brazil
2 Minas Faculty (FAMINAS), Minas Gerais, Brazil
3 Estácio de Sá University (UNESA), Rio de Janeiro, Brazil
4 Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
Aim. This study correlated the base concentrations of testosterone, cortisol, and T/C ratio with the speed endurance performance (SE) of swimmers during a 15-week training season (M0-M15).
Methods. An assessment of the base concentration of hormones (M0, M2, M4, M9, and M12) and SE performance (M2, M4, M9 e M12) of eight swimmers was performed. Testing consisted of 4 x 50 m crawl-style swimming, at 10 seconds intervals, where the time for each partial (CT1, CT2, CT3, and CT4) and the mean completion time (MCT) were recorded.
Results. The mean values found at all of the evaluated moments were 591.42±131.69 nmol/L for cortisol, 16.66 nmol/L for testosterone, and 0.029 for T/C. Significant correlation between cortisol and MCT (r = - 0.39 and P=0.026), between testosterone and CT1 (r = - 0.48 and p = 0.005) and CT2 (r = - 0.36 and P=0.04), between cortisol and CT4 (r =-0.46 and P=0.007), and between T/C and CT1 (r=-0.47 and P=0.007) were found. Higher base concentrations of testosterone and cortisol were favorable to SE performance.
Conclusion. Despite cortisol being a catabolism-associated hormone, higher base concentrations of cortisol were not found to be harmful to athletes when there was a positive T/C ratio.