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The female menstrual cycle does not influence testosterone concentrations in male partners
Linköping University, Linköping, Sweden; County Council of Östergötland, Linköping, Sweden.ORCID iD: 0000-0002-6681-0546
Linköping University, Linköping, Sweden; County Council of Östergötland, Linköping, Sweden.
Ryhov County Hospital, County Council of Jönköping, Jönköping, Sweden.
Linköping University, Linköping, Sweden; County Council of Östergötland, Linköping, Sweden.
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2012 (English)In: Journal of Negative Results in Biomedicine, ISSN 1477-5751, E-ISSN 1477-5751, Vol. 11, p. 1-7, article id 1Article in journal (Refereed) Published
Abstract [en]

Background: The time of ovulation has since long been believed to be concealed to male heterosexual partners. Recent studies have, however, called for revision of this notion. For example, male testosterone concentrations have been shown to increase in response to olfactory ovulation cues, which could be biologically relevant by increasing sexual drive and aggressiveness. However, this phenomenon has not previously been investigated in real-life human settings. We therefore thought it of interest to test the hypothesis that males' salivary testosterone concentrations are influenced by phases of their female partners' menstrual cycle; expecting a testosterone peak at ovulation.

Methods: Thirty young, healthy, heterosexual couples were recruited. During the course of 30-40 days, the women registered menses and ovulation, while the men registered sexual activity, physical exercise, alcohol intake and illness (confounders), and obtained daily saliva samples for testosterone measurements. All data, including the registered confounders, were subjected to multiple regression analysis.

Results: In contrast to the hypothesis, the ovulation did not affect the testosterone levels, and the resulting testosterone profile during the menstrual cycle was on the average flat. The specific main hypothesis, that male testosterone levels on the day of ovulation would be higher than day 4 of the cycle, was clearly contradicted by a type II error(β)-analysis (< 14.3% difference in normalized testosterone concentration; β = 0.05).

Conclusions: Even though an ovulation-related salivary testosterone peak was observed in individual cases, no significant effect was found on a group level.

Place, publisher, year, edition, pages
London, United Kingdom: BioMed Central, 2012. Vol. 11, p. 1-7, article id 1
Keywords [en]
Testosterone, menstrual cycle, ovulation, salivary, pheromones, hormones
National Category
Medical and Health Sciences Clinical Science
Identifiers
URN: urn:nbn:se:oru:diva-48104DOI: 10.1186/1477-5751-11-1PubMedID: 22214343Scopus ID: 2-s2.0-84855227433OAI: oai:DiVA.org:oru-48104DiVA, id: diva2:901428
Available from: 2016-02-08 Created: 2016-02-08 Last updated: 2017-11-30Bibliographically approved

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Ström, Jakob O.

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