title: Ovulatory disturbances. Causative factors among Japanese student nurses in a dormitory.
abstract: The incidence of ovulatory disturbances in student nurses living in a restricted circumstance was evaluated by observing a basal body temperature (BBT) chart recorded for three to nine months by all of the student nurses in our medical college. The students were 18-21 years of age and were all living in a school dormitory. One hundred of the 154 students (64.9%) were anovulators during the school term. However, 40 of the anovulators showed ovulatory cycles with biphasic BBT patterns during their spring and/or summer holidays. The subjects' living conditions were investigated by questionnaire. Age of menarche, sport activity, self-perceived physical and mental work load, and native region did not appear to be related to their ovulatory disturbances. Weight-height-derived indices indicated that the anovulators had a tendency to corpulence as compared to the regular ovulators. Serum luteinizing hormone, follicle stimulating hormone, and prolactin levels of the anovulators were not significantly different from the regular ovulators.
authors.forename: I
authors.initials: I
authors.lastname: Nagata
authors.forename: K
authors.initials: K
authors.lastname: Kato
authors.forename: K
authors.initials: K
authors.lastname: Seki
authors.forename: K
authors.initials: K
authors.lastname: Furuya
mesh_terms: D000293:Adolescent; D000328:Adult; D000858:Anovulation / Q000209:etiology*; D001831:Body Temperature; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood; D009765:Obesity / Q000150:complications; D010060:Ovulation; D005082:Physical Exertion; D011388:Prolactin / Q000097:blood; D012931:Social Environment; D013315:Stress, Psychological / Q000150:complications; D013338:Students, Nursing
chemical_list: D011388:Prolactin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone