Authors
Ciaran K. Mc Donald, Trinity College Dublin, IrelandFollow
Joss Moore, Trinity College Dublin, Ireland
Alan Mc Intyre, Trinity College Dublin, Ireland
Kevin Carmody, Trinity College Dublin, Ireland
Bernard Donne, Trinity College Dublin, Ireland
Abstract
International Journal of Exercise Science 10(1): 108-120, 2017. Caffeine has become a popular ergogenic aid amongst athletes and usage to improve athletic performance has been well documented. The effect of caffeine on anabolic and catabolic hormones in a sleep-deprived state has had little investigation to date. The purpose of the current study was to investigate the potential of caffeine to offset the effects, if any, of short-term sleep deprivation and exercise on an athlete’s testosterone and cortisol concentrations via salivary technique. Eleven competitive male athletes volunteered to be part of this prospective double-blinded study. Three test days were scheduled for each athlete; one non-sleep deprived, one sleep-deprived with caffeine supplementation (6 mg.kg-1) and one sleep-deprived with placebo ingestion. Sleep deprivation was defined as 24-h without sleep. Each test day was composed of 2 aerobic components: a modified Hoff test and a Yo-Yo test. Testosterone and cortisol concentrations were measured via salivary analysis at 4 different time-points; T1 to T4, representing baseline, and pre- and post-aerobic components, respectively. Overall no significant differences were detected comparing the different sleep states for testosterone or cortisol concentrations. A trend existed whereby the sleep-deprived with caffeine ingestion state mirrored the non-sleep deprived state for cortisol concentration. Therefore, caffeine supplementation may have potential benefits for athletes during short-term aerobic exercise when sleep-deprived. An increase in mean testosterone concentration post-aerobic exercise was only observed in the sleep-deprived with caffeine ingestion state.
Recommended Citation
Mc Donald, Ciaran K.; Moore, Joss; Mc Intyre, Alan; Carmody, Kevin; and Donne, Bernard
(2017)
"Acute Effects Of 24-h Sleep Deprivation On Salivary Cortisol And Testosterone Concentrations And Testosterone To Cortisol Ratio Following Supplementation With Caffeine Or Placebo,"
International Journal of Exercise Science: Vol. 10
:
Iss.
1, Pages 108 - 120.
DOI: https://doi.org/10.70252/YABF8773
Available at:
https://digitalcommons.wku.edu/ijes/vol10/iss1/11
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