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PubMed1983

The relationship between mode of female masturbation and achievement of orgasm in coitus.

To determine the relationship between masturbatory and coital behavior, 117 middle-class female volunteers were classified into three styles of masturbatory behavior--direct, indirect, and nonmasturbators. Direct masturbation was defined as the direct digital manipulation of the clitoris or use of a vibrator. Indirect masturbation included all other methods of masturbation not defined as direct. The classification was done on the basis of responses to a questionnaire. Of the masturbators 70% reported no change in their masturbatory style from initial masturbatory experiences. No relationship was found between either ability to masturbate or masturbatory style and coital orgasmic capacity. It was also found that (a) nonmasturbators achieved orgasm in coitus via additional clitoral stimulation significantly less frequently than either direct or indirect masturbators and (b) direct masturbators have a significantly greater preference for clitoral, as opposed to vaginal, stimulation as a means of achieving orgasm. The results are interpreted within the context of possible deficiencies in the questionnaire and confounding between the ongoing psychological and biological processes occurring in sexual activity. Within these constraints, the findings support current methods of treatment for primary and secondary anorgasmia.

Adult↗
PubMed1978

Age differences in attitude change toward premarital coitus.

Research on changes in attitudes toward premarital sexual behavior examine either (1) changes in attitudes of college students over a relatively short period of time or (2) changes in attitudes of adult nonstudent populations over long periods of time using noncomparable data sources. The present research examines changes in attitudes toward premarital coitus over a relatively short period of time utilizing national probability samples of the U.S. population. Rather than treating age as a dichotomous variable of the young and the old, age is considered in 10-year age groups, and changes by age group and sex are examined. The results indicate obvious dangers in employing gross breakdowns of the age variable in that considerable differences within young and old age groups are observed. Further, these difference interact with sex, producing sex- and age-specific change patterns. The exact nature of these patterns strongly suggests that the most rapid change is taking place among females in the 30--39 age group and that this change is such to produce intersex convergence in this age group. Rates of change by age and sex are discussed in terms of the possible differential influences of changes in women's roles.

Adolescent↗
PubMed1993

Coitus during pregnancy is not related to bacterial vaginosis or preterm birth.

OBJECTIVE: Our goal was to assess the relationship between bacterial vaginosis and sexual intercourse and the impact of both on preterm birth. STUDY DESIGN: The presence of bacterial vaginosis was assessed in 790 healthy nulliparous women between 8 and 17 weeks' gestation, and they were then asked to record weekly the number of occasions of sexual intercourse from registration to term. The end point for each was the occurrence of preterm uterine contractions, preterm birth, or preterm rupture of the membranes. RESULTS: A total of 407 women returned the specific follow-up charts on vaginal intercourse. Bacterial vaginosis was detected at registration in 93 of the 407 subjects (22.9%), but the presence or absence of bacterial vaginosis had no predictive value as regards the frequency of subsequent intercourse. Of the 39 women (9.6%) who experienced threatened preterm labor, 16 were delivered before 37 weeks of gestation. In addition, premature rupture of membranes occurred in 48 women (9 preterm and 39 term). The 95% confidence interval for the weekly frequency of intercourse was calculated for those women delivered at term; a larger (p < 0.05) proportion of women delivered preterm, with (6/9, 66.7%) or without (13/16, 81.3%) premature rupture of membranes, had frequencies less than the 95% confidence interval during the second trimester of pregnancy; the respective proportions were 75.0% (6/8) and 78.6% (11/14) during the third trimester. Furthermore, among those women who had stopped having sexual intercourse in the last trimester, a larger (p < 0.05) proportion was delivered preterm (57.1%), with or without premature rupture of membranes, than was delivered at term (13.6%). In addition, only three women (18.8%) delivered preterm, with (two women) or without (one woman) premature rupture of membranes, reported having intercourse within 1 week before the onset of complications. CONCLUSION: For healthy nulliparous women, coitus during pregnancy is not related to bacterial vaginosis and does not predispose to preterm birth.

Coitus↗
PubMed1980

Seasonal variations in coitus and other risk factors, and the outcome of pregnancy.

Data were analyzed from 36,068 U.S. pregnancies to determine whether any of the more frequent maternal risk factors are associated with seasonal variations in perinatal mortality rates. These mortality rates decreased below the yearly mean in January and rose sharply above the mean during the spring. The perinatal mortality rate in May/June was 30% above the rate in January/February (P less than 0.001). This and other variations in perinatal mortality rates closely followed changes in maternal coital activity. The proportion of women having coitus was 26% greater in May/June than in January/February (P less than 0.001). Seasonal variations in the frequencies of maternal hypertension, acetonuria and low pregnancy weight gain did not correlate with changes in perinatal mortality rates.

Coitus↗
PubMed1993

Coitus late in pregnancy: risk of preterm rupture of amniotic sac membranes.

OBJECTIVES: Coitus with or without orgasm in late pregnancy is inconsistently associated with preterm rupture of amniotic sac membranes. We tested the hypothesis that during late pregnancy sexual behaviors including sexual positioning relate to the occurrence of premature rupture of membranes. STUDY DESIGN: Women aged 15 to 45 years having preterm premature rupture of membranes, term premature rupture of membranes, or preterm delivery without premature rupture of membranes were matched singly by age, race, and parity to control women delivered of term infants. Information about six sexual activities, obstetric history, cervical infections, smoking during pregnancy, and sociodemographic information was obtained by face-to-face interview. RESULTS: Only the male superior position was significantly associated with preterm premature rupture of membranes (odds ratio 2.40, 95% confidence interval 1.16 to 4.97) and preterm delivery without premature rupture of membranes (odds ratio 1.82, confidence interval 1.02 to 3.25) after confounding variables were controlled for. No sexual positioning or sexual activities related significantly to term premature rupture of membranes. CONCLUSION: Most sexual positions and activities during late pregnancy are not associated with adverse pregnancy outcomes.

Adolescent↗
PubMed1990

Reverse coitus: mechanism of urethral injury in male partner.

Reverse coitus, a rarely used sexual position, makes the male urethra more vulnerable to injury from the pubic arch and symphysis pubis of the female partner. Severe pain, bleeding and immediate detumescence were observed in 3 patients. The lesion usually occurred at the fossa navicularis, responded well to conservative management and did not hinder micturition. Potency has been well preserved in all 3 patients.

Adult↗
PubMed1981

Should coitus late in pregnancy be discouraged?

Coitus late in pregnancy has been thought to be a cause of premature rupture of membranes, preterm birth, and amniotic fluid infections. In this study, data on 10 981 singleton, low-risk pregnancies were examined. The mothers were asked at time of delivery if there were any months when they did not have sexual intercourse during pregnancy. Pregnancy outcomes were determined by medical record review. Those having intercourse showed no increased risk of premature rupture of membranes, low birthweight, or perinatal death at any gestational age. Women abstaining from intercourse had more unfavourable outcomes in the seventh and eighth months, but these differences were almost eliminated by adjustment for maternal age. Preterm delivery was no more frequent in those having intercourse than in those abstaining. These findings challenge the view that intercourse late in pregnancy is harmful.

Adult↗
PubMed1980

Pneumoperitoneum following vaginal insufflation and coitus.

A 25-year-old woman developed bilateral lower abdominal and pleuritic chest pain radiating to the shoulders 30 min after oral-genital insufflation and conventional coitus. Radiographic evaluation demonstrated a pneumoperitoneum. This was attributed to a traumatic 5-mm rent in the vaginal cuff occurring six months after post-vaginal hysterectomy. Mild symptomatology and the absence of peritoneal irritation should suggest a vaginal etiology for pneumoperitoneum, and allow consideration of conservative management. Post-coital pneumoperitoneum after abdominal hysterectomy has been reported; however, we believe this to be the first such reported case after vaginal hysterectomy and associated with oral-genital insufflation.

Adult↗
PubMedDate not supplied

Family planning choices and some characteristics of coitus interruptus users in Gemlik, Turkey.

The objectives of this study were to gain information about some fertility issues, contraceptive method choices, and the reasons for coitus interruptus (CI) use among married women aged 15-49, in Gemlik, Turkey. One thousand nine hundred ten women were interviewed for this cross-sectional study. The pregnancy rate per woman was 2.9. 716 women (37.5%) had at least one unwanted pregnancy. Of the study population, 79.6% were using a contraceptive method (45.1% were using a modern method, 34.5% a traditional method). CI was the most preferred method (33.7%). Fertility measures of women who had used CI continuously were compared with other women. It was found that most CI users were content with the method.

Adolescent↗
PubMed2003

Protective role of the glans penis during coitus.

To examine the hypothesis that the glans penis acts protectively, absorbing forces, during coitus. Five potent patients (mean age 46.8+/-9.7 y), who had indication for surgical excision of the glans for penile carcinoma were included in the present study. Intraoperatively, intracavernosal pressure (ICP) was adjusted by saline infusion and maintained by a pressure feedback infusion pump to a pressure value of 70 mmHg. Using a dynamometer, an external compressive force of 0.5 kg was applied at the glans penis and the changes in ICP were monitored. Measurements were repeated after surgical excision of the glans. Significant ICP changes were noticed in all patients after excision of the glans. Mean preoperative ICP was 161+/-11.5 mmHg, while after glansectomy it reached 206.6+/-13 mmHg. DeltaICP was 45.8+/-10.57 mmHg. Two of the patients' partners reported pain during intercourse postoperatively, possibly due to the impact of the force applied by the rigid corpora cavernosa on the anterior vaginal wall without any absorption by the glans. The glans penis restricts the increase in ICP during sexual intercourse, playing a protective role for both the corpora cavernosa and the female genitalia.

Adult↗
PubMed2003

Recruitment of CD4 T lymphocytes and macrophages into the cervical epithelium of women after coitus.

OBJECTIVE: T lymphocytes and macrophages are considered essential components of the immune response. Many factors are known to influence the presence and distribution these cells in genital mucosa. This study investigated the effect of sexual intercourse on cervical intraepithelial T lymphocytes and macrophages in healthy uninfected women. STUDY DESIGN: Cervical intraepithelial samples were obtained with an endocervical brush from 31 women; the cervical T lymphocytes and macrophages were analyzed by flow cytometry. Eleven women with a history of last sexual intercourse at <3 days were compared against 20 women with last sexual intercourse of >3 days. Furthermore, cellular activation markers (CD69, CD25, HLA-DR) on T lymphocytes and costimulatory molecules (CD80, CD86) on macrophages were studied. RESULTS: Women with last sexual intercourse at <3 days showed predominance of CD4(+) T lymphocytes compared with women with last sexual intercourse of >3 days (P <.02); the numbers of macrophages were higher in the latter (P <.005). No difference was found in the density of T-lymphocyte activation and macrophage costimulatory markers between the two cohorts. CONCLUSION: Within cervical epithelium, the distribution of mononuclear leucocytes may be altered after coitus. The higher proportion of cervical intraepithelial CD4(+) T cells that were observed in the early postcoital period suggests a mechanism by which the relative risk of the acquisition of human immunodeficiency virus infection is increased in women.

CD4 Lymphocyte Count↗
PubMed2001

The social ecology of the co-occurrence of substance use and early coitus among poor, urban black female adolescents.

Currently, the profession of social work has proclaimed the need for an empirical research agenda to broaden its knowledge base. The profession's positivists rightly argue that a sound knowledge base is derived from rigorous scientific empirical methods. Unquestionably, the profession's unique contribution to the study of human development has been its emphasis on environmental effects and individual adaptation. Presently, social scientists embrace an ecological perspective when studying how social environmental effects are mediated. As researchers shift to a social ecological perspective, an empirical contextual model will allow the study of racial/ethnic differences in the incidence of adolescent problem behaviors (Stevens, 1998). An examination of the social ecology of poor, urban black female adolescents was undertaken to examine claims of the co-occurrence of early coitus and substance use, behaviors evident in black adolescents. An ecological framework operationalized by the constructs structural strain, kinscriptions, and community bridging is used to explicate how coital behavior among black females may not co-occur with drug use. The article's exegesis is directed by four postulates that help clarify the relationship of social ecology to the linkage of early coital behavior and substance use. The article concludes with adolescent narratives that illumine the cogency of the ecological analysis.

Adolescent↗
PubMedDate not supplied

Testosterone predicts initiation of coitus in adolescent females.

OBJECTIVE: The purposes of this study were to demonstrate, using longitudinal data, that the pubertal rise in testosterone (T) is associated with subsequent increases in female sexual interest and activity, and to examine these relationships within the context of a social control variable. METHODS: Using data from a 2-year panel study of approximately 200 black and white postmenarcheal adolescent females, the relationships among semiannual measures of T, sex hormone binding globulin (SHBG), pubertal development, and self-reports of coital and noncoital sexual activity were assessed. RESULTS: Testosterone and changes in T were significantly related to the timing of subsequent transition to first coitus for blacks and whites. Frequency of attendance at religious services operated as a social control variable among white females, and was found to moderate T effects on sexual transition for this group. CONCLUSIONS: These results are consistent with a biosocial model proposing T as a causal factor in female sexual activity, and suggest that biological effects are moderated by relevant social variables.

Adolescent↗
PubMed2006

Effect of coitus on recurrent preterm birth.

OBJECTIVE: To estimate the impact of sexual behavior on the risk of recurrent spontaneous preterm birth at less than 37 weeks of gestation. METHODS: This is a secondary analysis of a multicenter, blinded observational study of endovaginal sonographic examinations performed at 16-18 weeks of gestation on 187 women with singleton gestations who were at high risk for recurrent spontaneous preterm birth (prior spontaneous preterm birth at < 32 weeks of gestation). At the time of enrollment, each woman was interviewed by a research nurse with regard to her sexual history. The patient was asked about the number of sexual partners in her lifetime, the number of sexual partners since the start of her pregnancy, and, on average, the frequency of intercourse per week in the preceding month. RESULTS: A total of 165 pregnancies were available for this analysis. The population incidence of spontaneous preterm birth at less than 37 weeks of gestation in the study pregnancy was 36%. An increasing number of sexual partners in a woman's lifetime was associated with an increased risk of spontaneous preterm delivery (one partner 19%, 2-3 partners 29%, >or= 4 partners 44%, P = .007), whereas the number of sexual partners since the start of pregnancy was not (P = .42). Women who reported infrequent sexual intercourse during early pregnancy had an incidence of recurrent spontaneous preterm birth of 28% compared with 38% in those women who reported some intercourse (P = .35). CONCLUSION: Self-reported coitus during early pregnancy was not associated with an increased risk of recurrent preterm delivery. There was an association between increasing number of sexual partners in a woman's lifetime and recurrent preterm delivery. LEVEL OF EVIDENCE: II-2.

Adolescent↗
PubMed2002

Risky parental behavior and adolescent sexual activity at first coitus.

Data from the National Longitudinal Study of Adolescent Health (Add Health) were used to examine the impact of parents' behavior on adolescents' sexual experience and contraceptive use. All else being equal, adolescents whose parents engage in risky behaviors are especially likely to be sexually active and to have had sex before age 15. These findings are only partly attributable to the link between parents' risky behaviors (smoking, drinking, driving without seatbelts) and adolescents' risky behaviors (smoking, drinking, delinquent activity, association with substance-using peers). Although parental behaviors are effective predictors of adolescents' sexual activity, they are not effective predictors of contraceptive use or of method choice at first coitus. Overall, parents with low levels of self-efficacy seem to be especially likely to have children at risk of engaging in problem behaviors.

Adolescent↗
PubMed1986

Fetal heart rate changes and uterine activity during coitus.

Fetal heart rate and uterine activity were monitored during sexual intercourse in three otherwise normal gravid women at varying gestational ages. Increased uterine activity and a variety of fetal heart rate changes, some of which are traditionally identified as ominous, were seen in most instances immediately following orgasm. An increase in fetal activity was also commonly reported by the mothers. It is postulated that coitus is equivalent to an unmonitored contraction stress test.

Adult↗
PubMed2005

Vaginal injuries during coitus in Calabar: a 10-year review.

UNLABELLED: Injuries during coitus could result in considerable morbidity and mortality in women. Identifying their pattern of presentation and predisposing factors will aid in their prevention. STUDY DESIGN AND SETTING: A descriptive study of patients with coital injuries seen in the University of Calabar Teaching Hospital (U.C.T.H) Calabar, between 1991 and 2000, with data obtained from case records. RESULTS: Coital injuries constituted 0.7/1000 gynaecological emergencies. Rape (68.0%) was the commonest aetiological factor. It was more common in nulliparous patients (88.0%) and toddlers and teenagers formed the age group most affected. The lower vagina was the most common site of injury (44.0%). Vaginal bleeding was the commonest mode of presentation and hypovolaemic shock, the most common complication. CONCLUSION: Rape is the commonest cause of coital injury in Calabar. Coital injuries should be considered as a differential diagnosis in all cases of abnormal vaginal bleeding particularly in children.

Adolescent↗
PubMed1990

[Scrotal and perineal pain following coitus interruptus].

A case of perineal-scrotal and hypogastric pain following coitus interruptus in a young male patient is described. The physiopathological mechanisms involved in this condition in normal subjects or those with neuropathic disorders are discussed.

Adult↗