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The female menstrual cycle does not influence testosterone concentrations in male partners
Linköping University, Department of Clinical and Experimental Medicine, Clinical Chemistry. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Diagnostics, Department of Clinical Chemistry.
Linköping University, Department of Clinical and Experimental Medicine, Clinical Chemistry. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Diagnostics, Department of Clinical Chemistry.ORCID iD: 0000-0001-8813-0384
Ryhov County Hospital, County Council of Jönköping, Sweden.
Linköping University, Department of Clinical and Experimental Medicine, Clinical Chemistry. Linköping University, Department of Clinical and Experimental Medicine, Neurosurgery. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center for Diagnostics, Department of Clinical Chemistry. Östergötlands Läns Landsting, Anaesthetics, Operations and Specialty Surgery Center, Department of Neurosurgery.
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2012 (English)In: Journal of Negative Results in Biomedicine, ISSN 1477-5751, E-ISSN 1477-5751, Vol. 11, no 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
BioMed Central, 2012. Vol. 11, no 1
Keyword [en]
Testosterone; Menstrual cycle; Ovulation; Salivary; Pheromones; Hormones
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-107099DOI: 10.1186/1477-5751-11-1OAI: oai:DiVA.org:liu-107099DiVA: diva2:721888
Available from: 2014-06-05 Created: 2014-06-05 Last updated: 2017-12-05Bibliographically approved

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Ström, Jakob OIngberg, EdvinTheodorsson, AnnetteTheodorsson, Elvar

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