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Sexual Event (sexual + event)
Selected AbstractsORIGINAL RESEARCH,EJACULATION DISORDERS: A Multinational Population Survey of Intravaginal Ejaculation Latency TimeTHE JOURNAL OF SEXUAL MEDICINE, Issue 4 2005Marcel D. Waldinger MD ABSTRACT Introduction., Intravaginal ejaculation latency time (IELT), defined as the time between the start of vaginal intromission and the start of intravaginal ejaculation, is increasingly used in clinical trials to assess the amount of selective serotonin reuptake inhibitor-induced ejaculation delay in men with premature ejaculation. Prospectively, stopwatch assessment of IELTs has superior accuracy compared with retrospective questionnaire and spontaneous reported latency. However, the IELT distribution in the general male population has not been previously assessed. Aim., To determine the stopwatch assessed-IELT distribution in large random male cohorts of different countries. Methods., A total of 500 couples were recruited from five countries: the Netherlands, United Kingdom, Spain, Turkey, and the United States. Enrolled men were aged 18 years or older, had a stable heterosexual relationship for at least 6 months, with regular sexual intercourse. The surveyed population were not included or excluded by their ejaculatory status and comorbidities. This survey was performed on a "normal" general population. Sexual events and stopwatch-timed IELTs during a 4-week period were recorded, as well as circumcision status and condom use. Main Outcome Measures., The IELT, circumcision status, and condom use. Results., The distribution of the IELT in all the five countries was positively skewed, with a median IELT of 5.4 minutes (range, 0.55,44.1 minutes). The median IELT decreased significantly with age, from 6.5 minutes in the 18,30 years group, to 4.3 minutes in the group older than 51 years (P < 0.0001). The median IELT varied between countries, with the median value for Turkey being the lowest, i.e., 3.7 minutes (0.9,30.4 minutes), which was significantly different from each of the other countries. Comparison of circumcised (N = 98) and not-circumcised (N = 261) men in countries excluding Turkey resulted in median IELT values of 6.7 minutes (0.7,44.1 minutes) in circumcised compared with 6.0 minutes (0.5,37.4 minutes) in not-circumcised men (not significant). The median IELT value was not affected by condom use. Conclusion., The IELT distribution is positively skewed. The overall median value was 5.4 minutes but with differences between countries. For all five countries, median IELT values were independent of condom usage. In countries excluding Turkey, the median IELT values were independent of circumcision status. [source] Reducing sex under the influence of drugs or alcohol for patients in substance abuse treatmentADDICTION, Issue 1 2010Donald A. Calsyn ABSTRACT Aims In a previous report, the effectiveness of the Real Men Are Safe (REMAS) intervention in reducing the number of unprotected sexual occasions among male drug abuse treatment patients was demonstrated. A secondary aim of REMAS was to reduce the frequency with which men engage in sex under the influence (SUI) of drugs or alcohol. Design Men in methadone maintenance (n = 173) or out-patient psychosocial treatment (n = 104) completed assessments at baseline, 3 and 6 months post-intervention. Participants The participants were assigned randomly to attend either REMAS (five sessions containing information, motivational exercises and skills training, including one session specifically targeting reducing SUI) or human immunodeficiency virus (HIV) education (HIV-Ed; one session containing HIV prevention information). SUI during the most recent sexual event served as the primary outcome in a repeated measures logistic regression model. Findings Men assigned to the REMAS condition reporting SUI at the most recent sexual event decreased from 36.8% at baseline to 25.7% at 3 months compared to a increase from 36.9% to 38.3% in the HIV-Ed condition (tintervention = ,2.16, P = 0.032). No difference between the treatment groups was evident at 6-month follow-up. At each assessment time-point, sex with a casual partner versus a regular partner, and being in methadone maintenance versus psychosocial out-patient treatment, were associated with engaging in SUI. Conclusions Overall, a motivational and skills training HIV prevention intervention designed for men was associated with greater reduction in SUI than standard HIV education at the 3-month follow-up. [source] Genetic variation in organisms with sexual and asexual reproductionJOURNAL OF EVOLUTIONARY BIOLOGY, Issue 2 2003B. O. Bengtsson Abstract The genetic variation in a partially asexual organism is investigated by two models suited for different time scales. Only selectively neutral variation is considered. Model 1 shows, by the use of a coalescence argument, that three sexually derived individuals per generation are sufficient to give a population the same pattern of allelic variation as found in fully sexually reproducing organisms. With less than one sexual event every third generation, the characteristic pattern expected for asexual organisms appear, with strong allelic divergence between the gene copies in individuals. At intermediary levels of sexuality, a complex situation reigns. The pair-wise allelic divergence under partial sexuality exceeds, however, always the corresponding value under full sexuality. These results apply to large populations with stable reproductive systems. In a more general framework, Model 2 shows that a small number of sexual individuals per generation is sufficient to make an apparently asexual population highly genotypically variable. The time scale in terms of generations needed to produce this effect is given by the population size and the inverse of the rate of sexuality. [source] Sex under the Influence of Drugs or Alcohol: Common for Men in Substance Abuse Treatment and Associated with High-Risk Sexual BehaviorTHE AMERICAN JOURNAL ON ADDICTIONS, Issue 2 2010Donald A. Calsyn PhD Sex under the influence of drugs or alcohol is associated with high-risk sexual behavior. Heterosexual men (n = 505) in substance abuse treatment completed a computer-administered interview assessing sexual risk behaviors. Most men (73.3%) endorsed sex under the influence in the prior 90 days, and 39.1% endorsed sex under the influence during their most recent sexual event. Sex under the influence at the most recent event was more likely to involve anal intercourse, sex with a casual partner, and less condom use. Patients might benefit from interventions targeting sexual behavior and substance use as mutual triggers.,(Am J Addict 2010;00:1,9) [source] Sexual Behaviors, Condom Use, and Sexual Health of Americans Over 50: Implications for Sexual Health Promotion for Older AdultsTHE JOURNAL OF SEXUAL MEDICINE, Issue 2010Vanessa Schick PhD ABSTRACT Introduction., In the contemporary U.S., men and women are living longer and healthier lives. As such, many people spend greater portions of their lives as sexually active individuals. Yet, little is known about the myriad of ways that older adults experience their sexual lives. Aim., This study sought to assess the context and frequency of sexual behaviors, condom use, sexual pleasure, and sexual experience of men and women over age 50. Methods., Information regarding the sexual experiences of a nationally representative sample of men and women over age 50 within the past year was examined. Main Outcome Measures., Sexual behavior over the past year was assessed in relation to several situational and contextual characteristics (e.g., event location, type of partner, health status, condom use). Participants were also asked about their experience (i.e., pleasure, arousal, pain, lubrication/erectile difficulties, and orgasm) during their most recent partnered sexual event. Bivariate or ordinal logistic regression models were used to investigate the relationship of age, health and partner status to sexual frequency and experience. Results., Although sizable proportions (20,30%) of both men and women remained sexually active well into their 80s age was related to a lower likelihood of solo and most partnered sexual behaviors. When controlling for age, relationship status, and health remained significant predictors of select sexual behaviors. The participant's evaluation of their most recent sexual experience in terms of arousal, erectile difficulty, and orgasm all declined with age. Health status was related to men's evaluation of the experience. Relationship status was the most consistent predictor of women's evaluation of the experience. Condom use rates remained low for participants across age groups. Conclusion., Many older adults continue be sexually active well into advanced age (80+). Thus, providers need to be attentive to the diverse sexual health needs of older adults. Schick V, Herbenick D, Reece M, Sanders SA, Dodge B, Middlestadt SE, and Fortenberry JD. Sexual behaviors, condom use, and sexual health of Americans over 50: Implications for sexual health promotion for older adults. J Sex Med 2010;7(suppl 5):315,329. [source] ORIGINAL RESEARCH,FSD PHARMACOTHERAPY: Tibolone and Transdermal E2/NETA for the Treatment of Female Sexual Dysfunction in Naturally Menopausal Women: Results of a Randomized Active-Controlled TrialTHE JOURNAL OF SEXUAL MEDICINE, Issue 3 2008Esme A. Nijland MD ABSTRACT Introduction., There are some data to suggest that tibolone improves sexual function in postmenopausal women. However, evidence about the effects of tibolone on female sexual dysfunction is lacking. Aim., To compare the efficacy on sexual function of tibolone 2.5 mg to continuous combined transdermal estradiol (E2)/norethisterone acetate (NETA) (50 µg/140 µg) in naturally postmenopausal women with sexual dysfunction. Main Outcome Measure., Differences between treatment groups in the change from baseline for the composite subscore of the arousal, desire, and satisfaction domains of the self-reported Female Sexual Function Index (FSFI). Methods., A multicenter, double-blind, randomized, clinical trial was performed. Sexual function was assessed with the FSFI at baseline, week 12, and week 24. The outcomes of the Female Sexual Distress Scale (FSDS) and the frequency of satisfying sexual events (daily diaries) were secondary end points. Results., Four hundred three women, mean age 56, were included. Both therapies improved sexual function assessed by the FSFI. In the per protocol analysis, but not in the intent-to-treat analysis, the increase in FSFI scores was significantly larger in the tibolone group when compared with the E2/NETA patch group at week 24 (P = 0.036 and P = 0.025 for the composite subscore and total FSFI score, respectively). The satisfying sexual event rate increased from three to four times per 28 days at week 24 (P < 0.001 from baseline for both groups), with no difference between groups. The FSDS showed a significant decrease from baseline (P < 0.001), which was comparable for both treatment groups. Conclusions., Both treatments resulted to improved overall sexual function, as determined by scores on the FSFI, an increase in the frequency of sexual events, and a reduction in sexuality-related personal distress. The statistically significant higher FSFI scores in the tibolone group, when compared to the E2/NETA group, may be because of tibolone's combined estrogenic and androgenic properties. Nijland EA, Schultz WCMW, Nathorst-Boös J, Helmond FA, Van Lunsen RHW, Palacios S, Norman RJ, Mulder RJ, and Davis SR for the LISA study investigators. Tibolone and transdermal E2/NETA for the treatment of female sexual dysfunction in naturally menopausal women: Results of a randomized active-controlled trial. J Sex Med 2008;5:646,656. [source] Methods to Determine the Minimum Important Difference for a Sexual Event Diary Used by Postmenopausal Women with Hypoactive Sexual Desire DisorderTHE JOURNAL OF SEXUAL MEDICINE, Issue 5 2007Tara Symonds PhD ABSTRACT Introduction., Recently, there has been much discussion in the literature about how to determine the meaningfulness of results generated from a patient-reported outcome measure. A number of reviews have shown that there are two main approaches: anchor- and distribution-based approaches for determining the minimum important difference (MID) for a new measure. There are issues with calculating an MID using each method: Will the two approaches give the same estimate? If the estimates differ, how do you decide on one estimate? Would asking patients directly be more beneficial? Aim., A case study was presented to address these issues based on a newly developed diary assessing number of satisfactory sexual events (SSEs) per week in women with hypoactive sexual desire disorder (HSDD). Methods., Anchor- and distribution-based estimates were generated from data gathered in two double-blind, placebo-controlled, parallel group trials for the treatment of HSDD (N = 788). A novel interview study was used to ask women directly about an MID for SSEs (N = 77). Main Outcome Measures., Defining the MID for an SSE diary in women with HSDD. Results., The estimates varied, producing a range of mean MID estimates between 0.04 and 0.46 SSEs per week. Conclusion., We recommend that rather than defining the MID, a range should be selected from the set of estimates formed by the limits of the 95% confidence intervals. Symonds T, Spino C, Sisson M, Soni P, Martin M, Gunter L, and Patrick DL. Methods to determine the minimum important difference for a sexual event diary used by postmenopausal women with hypoactive sexual desire disorder. J Sex Med 2007;4;1328,1335. [source] The sexual habits of British men and women over 40 years oldBJU INTERNATIONAL, Issue 4 2004I. Eardley The first study in this section was conducted to give a better understanding of the sexual habits of men and women over 40 years old in the UK. This large population-based study has provided the first report on the frequency and timing of sexual activity in British men and women; it also suggested that there were subtle differences in attitudes between men and women. OBJECTIVE To obtain a greater understanding of sexual behaviour and habits among men with and without erectile dysfunction (ED), and their female partners, to improve the management of ED in heterosexual men. SUBJECTS AND METHODS A population-based study was conducted amongst men and women aged >,40 years. None of the subjects were partners in the same sexual relationship. Interviews were conducted on the Internet via a panel-based questionnaire. RESULTS In all, 225 (32%) men had self-reported ED and 88 (26%) women reported that their partner had ED. For all men (with or without ED) the mean time from first thinking of intercourse to beginning intercourse was just under 1 h. During their most recent period of sexual activity, 87% of men with and 78% of men without ED had intercourse with ejaculation at most once within 24 h; 81% of men and 89% of women felt that it was neither very nor extremely important to have intercourse with ejaculation more than once in a 24-h period. CONCLUSIONS This study reports for the first time the frequency of sexual activity in British men and women in heterosexual relationships, and describes the usual timings of sexual events. Few significant differences were identified between men with or with no ED. [source] Reproductive strategies in some arctic Saxifraga (Saxifragaceae), with emphasis on the narrow endemic S. svalbardensis and its parental speciesBOTANICAL JOURNAL OF THE LINNEAN SOCIETY, Issue 1 2001CHRISTIAN BROCHMANN Arctic saxifrages show conspicuous reproductive and chromosomal variation. We examined sexual and asexual traits in 43 phytotron-cultivated Svalbard populations of nine species, including the endemic, supposedly entirely asexual and aneupolyploid S. svalbardensis and its parental species, S. cernua and S. rivularis. All species were self-compatible hermaphrodites with low pollen/ovule ratios, including the strongly protandrous S. cernua, which previously has been reported as self-incompatible with an androdioecious mating system. Spontaneous selfing resulted in considerable seed set in several species and a few seeds in S. svalbardensis and S. cernua; hand-selfing and cross-pollination often increased seed set in the two latter species. Self-fertilized seeds of S. svalbardensis and S. cernua were viable and developed into normal, vigorous plants. Saxifraga rivularis and its close relative S. hyperborea were strongly autogamous. The bulbil-reproducing S. svalbardensis and S. cernua showed extreme variation in fertility, probably because of frequent aneuploidy. Many plants of S. cernua were fully fertile, suggesting that although natural seed set rarely has been observed, sexual reproduction is frequent enough to maintain its previously reported high levels of clonal diversity. Some plants of S. svalbardensis were also fairly fertile. This species may have considerable evolutionary potential; sexual events can lead to increasingly fertile genets with euploid chromosome numbers. [source] | |||||||||||||