Can salivary testosterone and cortisol reactivity to a mid-week stress test discriminate a match outcome during international rugby union competition?

Blair T Crewther, Neil Potts, Liam P Kilduff, Scott Drawer, Christian J. Cook

    Research output: Contribution to journalArticle

    • 3 Citations

    Abstract

    Objectives: Evidence suggests that stress-induced changes in testosterone and cortisol are related to future competitive behaviours and team-sport outcomes. Therefore, we examined whether salivary testosterone and cortisol reactivity to a mid-week stress test can discriminate a match outcome in international rugby union competition. Design: Single group, quasi-experimental design with repeated measures. Method: Thirty-three male rugby players completed a standardised stress test three or four days before seven international matches. Stress testing involved seven minutes of shuttle runs (2. ×. 20. m), dispersed across one-minute stages with increasing speeds. Salivary testosterone and cortisol were measured in the morning, along with delta changes from morning to pre-test (Morn-Preδ) and pre-test to post-test (Pre-Postδ). Data were compared across wins (n = 3) and losses (n = 4). Results: The Morn-Preδ in cortisol increased before winning and decreased prior to losing (p< 0.001), with a large effect size difference (d = 1.6, 90% CI 1.3-1.9). Testosterone decreased significantly across the same period, irrespective of the match outcome. The Morn-Preδ in testosterone and cortisol, plus the Pre-Postδ in testosterone, all predicted a match outcome (p ≤. 0.01). The final model showed good diagnostic accuracy (72%) with cortisol as the main contributor. Conclusions: The salivary testosterone and cortisol responses to mid-week testing showed an ability to discriminate a rugby match outcome over a limited number of games. The Morn-Preδ in cortisol was the strongest diagnostic biomarker. This model may provide a unique format to assess team readiness or recovery between competitions, especially with the emergence of rapid hormonal testing.

    LanguageEnglish
    Pages312-316
    Number of pages5
    JournalJournal of Science and Medicine in Sport
    Volume21
    Issue number3
    Early online date2 Jun 2017
    DOIs
    StatePublished - 2018

    Fingerprint

    Football
    Exercise Test
    Hydrocortisone
    Testosterone
    Competitive Behavior
    Aptitude
    Sports
    Research Design
    Biomarkers

    Cite this

    @article{ee1f4d81b835422085cd518cf8fd01f6,
    title = "Can salivary testosterone and cortisol reactivity to a mid-week stress test discriminate a match outcome during international rugby union competition?",
    abstract = "Objectives: Evidence suggests that stress-induced changes in testosterone and cortisol are related to future competitive behaviours and team-sport outcomes. Therefore, we examined whether salivary testosterone and cortisol reactivity to a mid-week stress test can discriminate a match outcome in international rugby union competition. Design: Single group, quasi-experimental design with repeated measures. Method: Thirty-three male rugby players completed a standardised stress test three or four days before seven international matches. Stress testing involved seven minutes of shuttle runs (2. ×. 20. m), dispersed across one-minute stages with increasing speeds. Salivary testosterone and cortisol were measured in the morning, along with delta changes from morning to pre-test (Morn-Preδ) and pre-test to post-test (Pre-Postδ). Data were compared across wins (n = 3) and losses (n = 4). Results: The Morn-Preδ in cortisol increased before winning and decreased prior to losing (p< 0.001), with a large effect size difference (d = 1.6, 90{\%} CI 1.3-1.9). Testosterone decreased significantly across the same period, irrespective of the match outcome. The Morn-Preδ in testosterone and cortisol, plus the Pre-Postδ in testosterone, all predicted a match outcome (p ≤. 0.01). The final model showed good diagnostic accuracy (72{\%}) with cortisol as the main contributor. Conclusions: The salivary testosterone and cortisol responses to mid-week testing showed an ability to discriminate a rugby match outcome over a limited number of games. The Morn-Preδ in cortisol was the strongest diagnostic biomarker. This model may provide a unique format to assess team readiness or recovery between competitions, especially with the emergence of rapid hormonal testing.",
    keywords = "Behaviour, Neuroendocrine, Readiness, Sport, Training",
    author = "Crewther, {Blair T} and Neil Potts and Kilduff, {Liam P} and Scott Drawer and Cook, {Christian J.}",
    note = "Copyright {\circledC} 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.",
    year = "2018",
    doi = "10.1016/j.jsams.2017.05.021",
    language = "English",
    volume = "21",
    pages = "312--316",
    journal = "Australian Journal of Science and Medicine in Sport",
    issn = "1440-2440",
    publisher = "Elsevier",
    number = "3",

    }

    Can salivary testosterone and cortisol reactivity to a mid-week stress test discriminate a match outcome during international rugby union competition? / Crewther, Blair T; Potts, Neil; Kilduff, Liam P; Drawer, Scott; Cook, Christian J.

    In: Journal of Science and Medicine in Sport, Vol. 21, No. 3, 2018, p. 312-316.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Can salivary testosterone and cortisol reactivity to a mid-week stress test discriminate a match outcome during international rugby union competition?

    AU - Crewther,Blair T

    AU - Potts,Neil

    AU - Kilduff,Liam P

    AU - Drawer,Scott

    AU - Cook,Christian J.

    N1 - Copyright © 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

    PY - 2018

    Y1 - 2018

    N2 - Objectives: Evidence suggests that stress-induced changes in testosterone and cortisol are related to future competitive behaviours and team-sport outcomes. Therefore, we examined whether salivary testosterone and cortisol reactivity to a mid-week stress test can discriminate a match outcome in international rugby union competition. Design: Single group, quasi-experimental design with repeated measures. Method: Thirty-three male rugby players completed a standardised stress test three or four days before seven international matches. Stress testing involved seven minutes of shuttle runs (2. ×. 20. m), dispersed across one-minute stages with increasing speeds. Salivary testosterone and cortisol were measured in the morning, along with delta changes from morning to pre-test (Morn-Preδ) and pre-test to post-test (Pre-Postδ). Data were compared across wins (n = 3) and losses (n = 4). Results: The Morn-Preδ in cortisol increased before winning and decreased prior to losing (p< 0.001), with a large effect size difference (d = 1.6, 90% CI 1.3-1.9). Testosterone decreased significantly across the same period, irrespective of the match outcome. The Morn-Preδ in testosterone and cortisol, plus the Pre-Postδ in testosterone, all predicted a match outcome (p ≤. 0.01). The final model showed good diagnostic accuracy (72%) with cortisol as the main contributor. Conclusions: The salivary testosterone and cortisol responses to mid-week testing showed an ability to discriminate a rugby match outcome over a limited number of games. The Morn-Preδ in cortisol was the strongest diagnostic biomarker. This model may provide a unique format to assess team readiness or recovery between competitions, especially with the emergence of rapid hormonal testing.

    AB - Objectives: Evidence suggests that stress-induced changes in testosterone and cortisol are related to future competitive behaviours and team-sport outcomes. Therefore, we examined whether salivary testosterone and cortisol reactivity to a mid-week stress test can discriminate a match outcome in international rugby union competition. Design: Single group, quasi-experimental design with repeated measures. Method: Thirty-three male rugby players completed a standardised stress test three or four days before seven international matches. Stress testing involved seven minutes of shuttle runs (2. ×. 20. m), dispersed across one-minute stages with increasing speeds. Salivary testosterone and cortisol were measured in the morning, along with delta changes from morning to pre-test (Morn-Preδ) and pre-test to post-test (Pre-Postδ). Data were compared across wins (n = 3) and losses (n = 4). Results: The Morn-Preδ in cortisol increased before winning and decreased prior to losing (p< 0.001), with a large effect size difference (d = 1.6, 90% CI 1.3-1.9). Testosterone decreased significantly across the same period, irrespective of the match outcome. The Morn-Preδ in testosterone and cortisol, plus the Pre-Postδ in testosterone, all predicted a match outcome (p ≤. 0.01). The final model showed good diagnostic accuracy (72%) with cortisol as the main contributor. Conclusions: The salivary testosterone and cortisol responses to mid-week testing showed an ability to discriminate a rugby match outcome over a limited number of games. The Morn-Preδ in cortisol was the strongest diagnostic biomarker. This model may provide a unique format to assess team readiness or recovery between competitions, especially with the emergence of rapid hormonal testing.

    KW - Behaviour

    KW - Neuroendocrine

    KW - Readiness

    KW - Sport

    KW - Training

    UR - http://www.scopus.com/inward/record.url?scp=85021177631&partnerID=8YFLogxK

    U2 - 10.1016/j.jsams.2017.05.021

    DO - 10.1016/j.jsams.2017.05.021

    M3 - Article

    VL - 21

    SP - 312

    EP - 316

    JO - Australian Journal of Science and Medicine in Sport

    T2 - Australian Journal of Science and Medicine in Sport

    JF - Australian Journal of Science and Medicine in Sport

    SN - 1440-2440

    IS - 3

    ER -