Ovulatory disturbances. Causative factors among Japanese student nurses in a dormitory

J Adolesc Health Care. 1986 Jan;7(1):1-5. doi: 10.1016/s0197-0070(86)80086-9.


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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Anovulation / etiology*
  • Body Temperature
  • Female
  • Follicle Stimulating Hormone / blood
  • Humans
  • Luteinizing Hormone / blood
  • Obesity / complications
  • Ovulation*
  • Physical Exertion
  • Prolactin / blood
  • Social Environment*
  • Stress, Psychological / complications
  • Students, Nursing*


  • Prolactin
  • Luteinizing Hormone
  • Follicle Stimulating Hormone