The Effect of a Moderate Aerobic Exercise Training Program on Ovarian Function.
Abstract
There is substantial evidence that estrogens play a key role in the etiology of breast cancer. Studies of athletes and prospective studies of high intensity exercise programs have found a higher frequency of anovulation and lower levels of estradiol among these women. Little is known about the effects of moderate intensity exercise on ovarian function. We hypothesize that the observed reduction in breast cancer risk with exercise is due to altered ovarian function. We are investigating the relationship between a moderate intensity exercise training program and ovarian function. We aim: (1) to determine whether an ovulation frequency is affected by a 6 month exercise training program, (2) to determine whether serum E2 levels change, and (3) to determine the luteal phase menstrual cycle lengths of these women. We are collecting blood and urine specimens and questionnaire data (over three years) from 120 premenopausal women. Of the 83 participants who began baseline measurements, 20 have completed the study and an additional 20 are expected to complete the study by December 1998. Most of the 43 women who dropped out of the study gave as their reason a change in address or some other aspect of their life that made participation extremely inconvenient.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1998
- Accession Number
- ADA358882
Entities
People
- Lisa S. Shames
Organizations
- University of Southern California