Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

On the frequency of intercourse around ovulation: evidence for biological influences.

Authors
Wilcox-AJ; Baird-DD; Dunson-DB; McConnaughey-DR; Kesner-JS; Weinberg-CR
Source
Hum Reprod 2004 Jul; 19(7):1539-1543
NIOSHTIC No.
20031566
Abstract
Backgreound: Intercourse in mammals is often coordinated with ovulation, for example through fluctuations in libido or by the acceleration of ovulation with intercourse. Such coordination has not been established in humans. We explored this possibility by examining patterns of sexual intercourse in relation to ovulation. Methods: Sixty-eight sexually active North Carolina women with either an intrauterine device or tubal ligation provided data for up to three menstrual cycles. These women collected daily urine specimens and kept daily diaries of intercourse and menstrual bleeding. Major estrogen and progesterone metabolites excreted in urine were used to identify the day of ovulation. The fertile days of the cycle were defined as the 6 consecutive days ending with ovulation. Women contributed a total of 171 ovulatory cycles. Menstrual bleeding days were excluded from analysis. Results: The frequency of intercourse rose during the follicular phase, peaking at ovulation and declining abruptly thereafter. The 6 consecutive days with most frequent intercourse corresponded with the 6 fertile days of the menstrual cycle. Intercourse was 24% more frequent during the 6 fertile days than during the remaining non-bleeding days (P < 0.001). Conclusions: There apparently are biological factors that promote intercourse during a woman's 6 fertile days.
Keywords
Hormone-activity; Hormones; Fertility; Humans; Reproduction; Reproductive-system; Women
Contact
AJ Wilcox, NIEHS, Epidemiol Branch, MD A3-05,POB 12233, Res Triangle Pk, NC 27709
CODEN
HUREEE
Publication Date
20040701
Document Type
Journal Article
Email Address
wilcox@niehs.nih.gov
Fiscal Year
2004
NTIS Accession No.
NTIS Price
Issue of Publication
7
ISSN
0268-1161
NIOSH Division
DART
Source Name
Human Reproduction
State
OH; NC
TOP