Reliability of salivary cortisol and testosterone to a high-intensity cycling protocol to highlight overtraining
Leal, Diogo Luis Campos Vaz
AffiliationNottingham Trent University
University of Bedfordshire
University Institute of Maia
University of Technology Sydney
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AbstractAthletes physically overload to improve performance. Unbalanced stress/recovery may induce overtraining, which is difficult to diagnosis as no diagnostic marker exists. Hormonal responses to a 55/80 cycle (30-min of alternating blocks of 1-min at 55% and 4-min at 80% maximum work rate) may highlight early-stage overtraining (overreaching), as blunted cortisol and testosterone responses to 55/80 follows intensified training. However, the reliability of hormonal responses to 55/80 when not overreached is unknown. Therefore, reported blunted hormonal responses could be due to inconsistent cortisol and testosterone responses to 55/80. Participants (n = 23) completed three 55/80 bouts, >7 days apart, with no exercise 24 h pre-trials. Pre-exercise urine osmolality and stress questionnaire responses were measured. Pre, post, and 30-min post-exercise saliva samples were collected for cortisol and testosterone assessment. Salivary cortisol and testosterone responses, osmolality and well-being were not different between trials. Salivary cortisol and testosterone elevated from pre- to post-exercise [by 4.2 nmol.L-1 (cortisol) and 307 pmol.L-1 (testosterone)], and 30 min post-exercise [by 160 pmol.L-1 (testosterone) only]. Intraclass correlation coefficients for pre to peak post-exercise cortisol (0.89; good) and testosterone (0.53; moderate) were calculated. This demonstrates that 55/80 induces reliable elevations of salivary cortisol and testosterone when in a healthy state.
CitationHough J, Leal D, Scott G, Taylor L, Townsend D, Gleeson M (2021) 'Reliability of salivary cortisol and testosterone to a high-intensity cycling protocol to highlight overtraining', Journal of Sports Sciences, (), pp.1-7.
PublisherTaylor & Francis
JournalJournal of Sports Sciences
- The Impact of Wearing and Perceiving Colors on Hormonal, Physiological, and Psychological Parameters in Cycling.
- Authors: Mentzel SV, Krenn B, Dreiskaemper D, Strauss B
- Issue date: 2021 May 17