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  • Title: Oral contraceptives decrease saliva testosterone but do not affect the rise in testosterone associated with athletic competition.
    Author: Edwards DA, O'Neal JL.
    Journal: Horm Behav; 2009 Aug; 56(2):195-8. PubMed ID: 19470364.
    Abstract:
    Women athletes from intercollegiate soccer, volleyball, and softball teams, and women skaters from a team competing in an amateur roller derby league, contributed saliva samples before warm-up and immediately after the completion of one or more sanctioned competitions. Women using oral contraceptives (OCs, n=29) had a significantly lower mean level of saliva testosterone (T) than non-users (n=51). Thus, OCs contribute predictable variation to individual differences in saliva T, and OC use is likely to contribute to individual differences in measures of psychological processes and/or behavior which are causally related to individual differences in circulating testosterone. Most of the women (n=68) played during one or more of the competitions for which they contributed saliva samples. Whether for soccer, volleyball, softball, or roller derby, competition was associated with a robust increase in saliva T. Although OC users had significantly lower saliva T levels than non-users before and after-competition, both users and non-users showed virtually the same increase in saliva T over the course of competition. While the most proximal cause of this increase is not known, it is probably not the result of an increase in gonadotropin (GTH) secretion since an increase in GTH secretion would presumably be prevented by OC use.
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