scholarly journals Sexual practices in youth: analysis of lifetime sexual trajectory and last sexual intercourse

2006 ◽  
Vol 22 (7) ◽  
pp. 1471-1481 ◽  
Author(s):  
Maria Luiza Heilborn ◽  
Cristiane S. Cabral

This article examines the sexual practices of young Brazilians based on data from the GRAVAD Research Project, a household survey targeting males and females from 18 to 24 years of age (n = 4,634) in three Brazilian State capitals: Porto Alegre, Rio de Janeiro, and Salvador. The set of practices experienced over the course of their sexual careers is characterized by traits of social belonging, elements from individual life histories, and prescribed rules of conduct for men and women. The authors compared the young people's range of lifetime practices and those from last sexual relations in order to discuss the spread and incorporation of practices into life histories. The data point to the hegemony of vaginal sex in both the lifetime repertoire of sexual practices and the last sexual encounters, such that vaginal sex provides the prime definition of heterosexuality.

2013 ◽  
Vol 17 (4) ◽  
pp. 853-860 ◽  
Author(s):  
Luiz A Anjos ◽  
Vivian Wahrlich ◽  
Mauricio TL Vasconcellos

AbstractObjectiveTo measure BMR in a probability sample of adults from an urban city of Brazil and to compare indirectly measured BMR (BMRi) with BMR predicted from different equations.DesignBMR data were obtained by indirect calorimetry and estimated by different predictive equations (Schofield; Harris and Benedict; Henry and Rees). Anthropometric and body composition measures were also obtained.SettingThe Nutrition, Physical Activity and Health Survey (PNAFS), a household survey conducted in Niterói, Rio de Janeiro state, Brazil.SubjectsRepresentative sample of 529 adults (aged ≥20 years; 339 females) living in Niterói, Rio de Janeiro state, Brazil.ResultsMean BMRi values were 5839·7 (se 73·9) kJ/d and 4758·1 (se 39·5) kJ/d for men and women, respectively. Predicted BMR by all equations was significantly higher (difference between means and 95 % CI did not include zero) than BMRi in both men and women of all ages. Overall bias in BMR (predicted BMR minus BMRi) using the Schofield equations (overestimation of about 20 %) was higher than when using the Henry and Rees equations (13 % and 16 % overestimation for males and females, respectively). The percentage of individuals whose BMR predicted by the Schofield equations fell within 10 % of BMRi was very low (7·8 % and 14·1 % of males and females, respectively).ConclusionsCurrent available predictive equations of BMR are not adequate to estimate BMR in Brazilians living in Niterói, Rio de Janeiro, Brazil.


BMJ Open ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. e037608
Author(s):  
Mario Martín-Sánchez ◽  
Richard Case ◽  
Christopher Fairley ◽  
Jane S Hocking ◽  
Catriona Bradshaw ◽  
...  

ObjectivesIn the 2010s, there has been an increase in sexually transmitted infections (STI) in men who have sex with men (MSM) in Australia, and since 2015 also in urban heterosexuals. Men who have sex with both men and women (MSMW) have characteristics that may differ from both men who have sex with men only (MSMO) and heterosexual men. We aimed to compare the sexual practices and the trends in HIV/STI positivity between MSMO and MSMW.DesignRepeated cross-sectional study.SettingA sexual health centre in Melbourne, Australia.ParticipantsMSM aged 18 years and above who attended the Melbourne Sexual Health Centre for the first time between 2011 and 2018. This includes 12 795 MSMO and 1979 MSMW.Primary outcome measuresDemographic characterics, sexual practices and HIV/STI positivity.ResultsCompared with MSMW, MSMO were more likely to practice anal sex and to have condomless receptive anal sex with casual male partners, and less likely to have a current regular relationship. Over the 8-year period, there was an increase in condomless receptive anal sex with casual male partners for both groups (MSMO: from 46.2% to 63.3%, ptrend <0.001; MSMW: from 41.3% to 57.9%, ptrend=0.011). Syphilis positivity increased in MSMO (from 5.5% to 7.9%, ptrend=0.012) and MSMW (from 0.9% to 6.4%, ptrend=0.004) and HIV remained stable. Gonorrhoea increased among MSMO from 2011 to 2014 (from 6.7% to 9.6%, ptrend=0.002), and remained stable from 2015 to 2018. MSMO had higher odds of testing positive for gonorrhoea (adjusted OR (aOR) 1.36, 95% CI 1.13 to 1.64), chlamydia (aOR 1.39, 95% CI 1.16 to 1.67), syphilis (aOR 1.74, 95% CI 1.37 to 2.22) and HIV (aOR 4.60, 95% CI 2.43 to 8.70) than MSMW.ConclusionsMSMW have overall lower condomless sex and lower HIV/STI positivity. In the last years, changes in sexual practices in MSM have affected both MSMW and MSMO leading to an increased STI risk.


Author(s):  
Robin Björkas ◽  
Mariah Larsson

AbstractSex dolls are a complex phenomenon with several diverse possible emotional, sexual and therapeutic uses. They can be part of a broad variety of sexual practices, and also function as a sexual aid. However, the media discourse on sex dolls first and foremost concerns how we perceive the relationship between intimacy and technology. A critical discourse analysis of the Swedish media discourse on sex dolls reveals six themes which dominate the discourse: (a) the definition of what a human being is; (b) a discourse on the (technological and existential) future; (c) a social effort; (d) a loveless phenomenon; (e) men’s violence against women; and (f) pedophilia. Accordingly, this discourse is very conservative and normative in its view of sexuality, technology, and humanity. Overall, the dominant themes do not provide any space for positive effects of technology on human sexuality, and if they do, it is usually as a substitute for something else.


2002 ◽  
Vol 80 (9) ◽  
pp. 1578-1583 ◽  
Author(s):  
Christopher P Yourth ◽  
Mark R Forbes ◽  
Robert L Baker

A few studies have shown that male and female invertebrates differ in immunity and that these differences appear related to differences in sexual dimorphism and gender differences in life histories. Melanotic encapsulation of foreign objects in insects is one form of immunity. The damselfly Lestes forcipatus Rambur is moderately sexually dimorphic, and much is known about patterns of mass gain in congeners relating to differences in life history between males and females. In this study, females were more immunoresponsive than males under controlled temperatures, following emergence, and at a time when parasitic mites were challenging these hosts. However, males and females that overlapped in mass at emergence did not differ in their immune responses. Males in better condition at emergence were more immunoresponsive than lighter males, but this relation was not found in females. Sex differences in immune expression may have implications for how females versus males are able to deal with challenges from parasites, under varying environmental conditions.


Author(s):  
Jyoti Bala Sahu

Skin is the largest organ of the body both by surface area and weight. This covers the entire body. The thickness of skin varies considerably over all parts of the body and between young and old, men and women. It helps to regulate body temperature, stores water fat and permit sensation of touch. Psoriasis is a chronic dermatosis characterized by covered by silvery loose scales. Treatment available on contemporary system is not curative but suppressive only. The prevalence of psoriasis is 8%. Prevalence equal in males and females. A case of Mandala Kustha discussed here. Patient successfully treated with Shodhana (Virechana karma) & Shamana Chikitsa. After course of 2 months treatment provides significant relief in Sign and Symptoms. In our classics mentioned Shodhana Chikitsa for Kustha Roga. Considering the sign and symptoms of patient was treated with classical Virechana karma (therapeutic purgation) and Shamana Chikitsa according to line of treatment of Kustha (Psoriasis). Assessment was done on before treatment, after treatment and after follow up of 2 months; pictures were taken before treatment and after treatment. Remarkable improvement was noticed, induration and itching after Virechana treatment.


2018 ◽  
Vol 42 (162) ◽  
pp. 244-264 ◽  
Author(s):  
Leanne Calvert

AbstractThe history of sex and sexuality is underdeveloped in Irish historical studies, particularly for the period before the late-nineteenth century. While much has been written on rates of illegitimacy in Ireland, and its regional diversity, little research has been conducted on how ordinary women and men viewed sex and sexuality. Moreover, we still know little about the roles that sex played in the rituals of courtship and marriage. Drawing on a sample of Presbyterian church records, this article offers some new insights into these areas. It argues that sexual intercourse and other forms of sexual activity formed part of the normal courtship rituals for many young Presbyterian couples in Ulster. Courting couples participated in non-penetrative sexual practices, such as petting, groping and bundling. Furthermore, while sexual intercourse did not have a place in the formal route to marriage, many couples engaged in it regardless.


2018 ◽  
Vol 71 (suppl 3) ◽  
pp. 1420-1427
Author(s):  
Letícia Medeiros Santomé ◽  
Sandra Maria Cezar Leal ◽  
Joel Rolim Mancia ◽  
Antônio Marcos Freire Gomes

ABSRACT Objective: to characterize children hospitalized due to violence in a pediatric ICU in 2011; to relate violence and the mechanisms of trauma with death; to know the contextualization of violence, from the records in the medical records. Method: retrospective cohort, performed in a first aid hospital, Porto Alegre city, in the records of 22 children hospitalized in the ICU due to violence. Quantitative analysis was performed by absolute and relative frequency rates, chi-square and relative risk. Results: 54.5% were boys, 81.8% were white and 50% were up to three years old. Physical violence 50% and neglect 36.4%, family of children (77.3%), highlighting the mother (35.3%). Mechanisms of aggression: fall (22.7%), burns (18.2%). Burns were at high risk for death. Discharge to go home after ICU admission (59.1%). Conclusion: It is considered that the characterization of the cases of violence reflects the complexity of the theme, mainly, in face of the life histories that surround each case of children hospitalized by this aggravation.


1933 ◽  
Vol 9 (5) ◽  
pp. 443-457 ◽  
Author(s):  
C. E. Atwood

This paper describes the results of studies on the wild bees of Nova Scotia, which were carried out in connection with apple pollination investigations in the Annapolis-Cornwallis Valley, Nova Scotia.The biology of the Apoidea in general is reviewed from the literature, and a list of bees taken on apple bloom is given. As the members of the genera Halictus and Andrena were found to be the most important native pollinators, the greater part of the paper is devoted to accounts of the habits and life histories of representative species.The members of the genus Andrena were found to have a simple type, such as is generally found among solitary bees. The females provision the nest and then die; the larvae develop to the pupal stage in their underground cells, then emerge as adults the following season. All Nova Scotian species studied were one-generation forms.The bees of the genus Halictus show a primitive social organization, more complex in some species than in others. The first brood consists of females only, which are apparently sterile and work at nest construction, the gathering of pollen, etc. They are followed later in the season by a brood of males and females; these females, after being fertilized, hibernate for the winter, while the males die in the fall. The hibernating habits of different species are described, and notes are given on some parasites and inquilines of the two genera.


2009 ◽  
Vol 37 (3) ◽  
pp. 343-356 ◽  
Author(s):  
Trisha Mueller ◽  
Lorrie Gavin ◽  
Roy Oman ◽  
Sara Vesely ◽  
Cheryl Aspy ◽  
...  

Youth internal assets and external resources are protective factors that can help youth avoid potentially harmful behaviors. This study investigates how the relationship between youth assets or resources and two sexual risk behaviors (ever had sex and birth control use) varied by gender. Data were collected through in-home interviews from parent—adolescent dyads, including 1,219 females and 1,116 males. Important differences exist between male and female adolescents. Females with the nonparental role models or the family communication resource were more likely to report never having had sexual intercourse than were females without the resources. Among males, the aspirations for the future and responsible choices assets were associated with never having had sexual intercourse. Males and females had two assets or resources in common that were protective of never having had sex: peer role models and use of time (religion). Considering which youth assets and resources are more likely to positively influence sexual behaviors of males and females may be important when planning prevention programs with youth.


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