Chronotype but not sleep length is related to salivary testosterone in young adult men
Abstract
Sex hormones, including testosterone, are hypothesized to have an influence on the human circadian system. We sampled male students in the period after adolescence. We used the Composite Scale of Morningness (CSM) to assess chronotype and saliva testosterone sampling in 106 University students (23.87±3.56 years; range 19-37) between 26.4.2011 and 6.5.2011, always between 0800h and 0900h. There was a significant negative relationship between CSM scores and saliva testosterone (r(s)=-0.220, p=0.023, two-tailed test) but not between testosterone and average sleep length. Age and testosterone did not correlate with each other nor did age and CSM scores. Our data suggest that chronotype in men might be influenced by testosterone and that high testosterone levels lead to a stronger evening-orientation. Sleep duration was uncorrelated with testosterone, suggesting that timing of sleep - rather than sleep length itself - is influenced by testosterone.
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Recent data from adult men demonstrate a positive correlation between circulating testosterone levels and evening chronotype.
“This story is consistent with recent data from adult men demonstrating a positive correlation between circulating testosterone levels and evening chronotype [156].”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [156]
A recent study by Randler et al. suggests a positive correlation between evening chronotype and circulating testosterone levels in adult men (ages 19-37).
“As mentioned earlier, a recent study by Randler et al. [156] suggests that there is a positive correlation between evening chronotype and circulating testosterone levels in adult men (ages 19-37).”
From The neuroendocrine control of the circadian system: Adolescent chronotype (2012) · cites this paper as [156]
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- Authors
- Randler, C., Ebenhöh, N., Fischer, A., Höchel, S., Schroff, C., Stoll, J. C., & Vollmer, C.
- Affiliations
- Heidelberg University of Education (DE)
- Corresponding author
- Randler, Christoph
- Venue
- Psychoneuroendocrinology
- Publisher
- Elsevier BV
- Published
- 2012-10
- Volume
- 37
- Issue
- 10
- Pages
- 1740-1744
- ISSN
- 0306-4530 (ISSN-L)
- OpenAlex
- W2043672942
- Cited by
- 90
- References
- 27
- Citations by year
- 2026: 4 · 2025: 7 · 2024: 6 · 2023: 6 · 2022: 3 · 2021: 6 · 2020: 2 · 2019: 4 · 2018: 8 · 2017: 4 · 2016: 6 · 2015: 6 · 2014: 13 · 2013: 10 · 2012: 5
- FWCI
- 4.79
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Psychoneuroendocrinology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Keywords
- chronotype, salivary testosterone, sex hormones, circadian system, sleep timing, sleep duration, Composite Scale of Morningness, young men, eveningness
- MeSH terms
- Adult, Circadian Rhythm, Humans, Male, Surveys and Questionnaires, Saliva, Sleep, Testosterone, Young Adult
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