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Title: Behaviour of salivary testosterone and cortisol in men during an Ironman Triathlon
Authors: Vaamonde, Diana
García Manso, Juan Manuel 
Algar-Santacruz, Carolina
Abbasi, Asghar
Sarmiento Montesdeoca, Samuel 
Valverde-Esteve, Teresa
UNESCO Clasification: 241106 Fisiología del ejercicio
Keywords: Competition
Issue Date: 2021
Project: Junta de Andalucía- Consejería de Turismo, Comercio y Deporte [Grant number: IMD2010SC0001].
Journal: European Journal of Sport Science 
Abstract: Endurance exercise induces notable acute hormonal responses on the gonadal and adrenal hormones. The purpose of this study was to assess the changes in salivary testosterone (Ts), salivary cortisol (Cs) and T/C ratio during long-distance triathlon. Ten well-trained male triathletes participated in the study and were assessed for hormonal changes at four time-points (pre-competition, post-swimming, post-cycling, and post-running phases). Ts decreased from pre-competition to post-swimming (from 93.37 pg/mL to 57.63 pg/mL; p <.01) and increased during two other parts of the competition to almost pre-competition values (cycling: 79.20 pg/mL, p =.02; running: 89,66 pg/mL, p =.04, respectively). Cs showed a similar behaviour; decreasing in the post-swimming phase (1.74 pg/mL) and increasing in the other transitions (post-cycling: 7.30 pg/mL; post-running: 13.31 pg/mL), with significant differences between pre-competition and post- competition values (p =.01). Conversely, T/C increased significantly from pre-competition to post-swimming phase (p =.04) to later decrease until the end of the competition. Overall, T/C significantly decreased (p <.05). In conclusion, during an Ironman triathlon, hormone values fluctuate in response to the demands of the competition. Ts and Cs decrease after-swimming, increase after-cycling and reach the maximum values after-running. T/C reflects overall catabolic status.
ISSN: 1746-1391
DOI: 10.1080/17461391.2021.1955011
Source: European Journal of Sport Science [ISSN 1746-1391], (Enero 2021)
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