Gastrin: a new branch of the gastropancreatic axis that can explain the effect of sleeve gastrectomy on glucose metabolism.

BACKGROUND: Among bariatric techniques, sleeve gastrectomy (SG) stands out owing to its efficiency. The role of the stomach as a secretory organ of many substances, such as gastrin, related to insulin secretion is well known. Gastrin induces insulin release in isolated pancreatic islets, limiting somatostatin-14 intraislet release, and has been associated with blood glucose level improvement in diabetic models after SG. SG involves gastric resection along the greater curvature. This study aimed to determine the role of gastrin in glucose metabolism improvement after SG with the aid of the gastrin antagonist netazepide. METHODS: In 12 sham-operated, 12 SG-operated, and 12 SG-operated/netazepide-treated Wistar rats, we compared medium- and long-term plasma insulin, oral glucose tolerance test (OGTT) results, and plasma gastrin levels. In addition, gastrin expression was assessed in the gastric remnant, and the beta-cell mass was measured. RESULTS: SG induced a medium-term elevation of the insulin response and plasma gastrin levels without modification of the OGTT results. However, long-term depletion of the insulin response with elevated OGTT areas under the curve and plasma gastrin levels appeared after SG. Netazepide prevented the SG effect on these parameters. Gastrin tissue expression was greater in SG animals than in SG/netazepide-treated or control animals. The beta-cell mass was lower in the SG group than in the control or SG/netazepide group. CONCLUSION: Gastrin plays a central role in glucose improvement after SG. It stimulates a medium-term strong insulin response but also causes long-term beta-cell mass depletion and a loss of insulin response. These effects are prevented by gastrin antagonists such as netazepide.

Validity and Reliability Evidence and Norms for the Spanish Version of the Sexual Inhibition/Sexual Excitation Scales-Short Form.

BACKGROUND: The Sexual Inhibition/Sexual Excitation Scales-Short Form (SIS/SES-SF) is a brief instrument for assessing the propensity for sexual excitement and inhibition in men and women. The aim of the present study was to provide evidence for the validity and reliability of the Spanish version of the SIS/SES-SF scores by examining invariance, reliability (information function and internal consistency), the relationship between the scores and sexual functioning, and presenting its standard scores. METHOD: A total of 2,223 Spanish heterosexuals (43.41% men and 56.59% women) aged 18 to 83 years (M = 39.94, SD = 11.95), distributed across age groups (18-34, 35-49, ≥ 50 years old) participated. RESULTS: The three-factor structure of the Spanish version of SIS/SES-SF showed weak measurement invariance by sex and strict measurement invariance by age. The scores explained the dimensions of sexual functioning, especially sexual arousal and erection/lubrication. In addition, men and women without difficulties in sexual functioning demonstrated more propensity for sexual excitation and less sexual inhibition. The standard scores are presented by sex and age group. CONCLUSIONS: The study provides evidence of the validity and reliability of the SIS/SES-SF measures, confirming its usefulness for assessing propensity to sexual excitation and inhibition.

The Empire of Affectivity: Qualitative Evidence of the Subjective Orgasm Experience.

The subjective orgasm experience (SOE) refers to its perception and/or assessment from a psychological viewpoint. Few works have approached this construct from a qualitative perspective and have never taken a consolidated theoretical model as a reference. This study aims to provide qualitative validity evidence to the Multidimensional Model of Subjective Orgasmic Experience, derived from the Orgasm Rating Scale (ORS), to qualitatively address SOE in the contexts of sexual relationships and solitary masturbation, analyzing the terms self-generated by individuals and examining the coincidence with the semantic descriptions of orgasm proposed by the ORS. Four hundred Spanish adults aged 18 to 64 years participated. The Technique of Free Association of Words was applied, and prototypical, frequency, and similitude analyses were performed. A similar description was observed concerning the terms generated in both contexts, with a higher frequency and intensity in the context of sexual relationships. In the context of solitary masturbation, negative orgasmic descriptions were evoked. Participants were able to elicit the vast majority of ORS adjectives, with Affective being the most notable dimension, followed closely by Rewards, especially in masturbation. Most of the adjectives were evoked simultaneously with those of the Affective, with "pleasurable" standing out as the most predominant one. This work provides qualitative evidence to the SOE study, ratifying the semantic composition of the ORS and thus endorsing the Multidimensional Model of Subjective Orgasmic Experience as a good theoretical model from which to continue studying the subjective orgasmic experience.

And how do LGB adults rate their orgasms in a relational context?

BACKGROUND: Subjective orgasm experience (SOE) refers to the perception, assessment, and/or sensation of orgasm on a psychological level, with the particularity that the study of SOE in nonheterosexual populations is currently very scarce. AIM: The study sought to analyze differences in SOE dimensions, comparing the intensity of each adjective of the Orgasm Rating Scale (ORS) and creating a ranking of the adjectives that better represent it in LGB men and women. METHODS: In a sample of 1475 adults organized into 4 groups according to the type of sexual relationships reported, comparisons were made using multivariate analysis of variance and chi-square tests. OUTCOMES: Differences were obtained in the intensity of all the SOE dimensions, and in 23 of the 25 ORS adjectives. RESULTS: Lesbians and bisexual women reported higher intensity in SOE compared with bisexual and gay men. CLINICAL IMPLICATIONS: Because the ORS has been established as a good tool for detecting orgasmic difficulties in nonheterosexual populations, this study could provide LGBT affirmative psychotherapy with evidence on how these individuals evaluate their orgasms in a relational context. STRENGTHS AND LIMITATIONS: This study extends prior limited knowledge about how LGB people evaluate their orgasmic experiences in the context of sexual relationships. Despite this, the study poses limitations such as nonprobability sampling or the inclusion of exclusively cisgender and young individuals, making it difficult to generalize the results. CONCLUSION: Although significant differences were found between LGB men and women, all groups agree on the adjectives they use to describe the subjective experience of orgasm in the context of sexual relationships; therefore, evidence is provided about how LGB people evaluate their orgasmic experiences in this context.

Sexual Rewards and Costs in Heterosexual and Gay Hispanic Adults.

The Interpersonal Exchange Model of Sexual Satisfaction proposes that sexual satisfaction can be explained by the balance of sexual rewards or costs exchange. The Interpersonal Exchange Model of Sexual Satisfaction Questionnaire (IEMSSQ) was developed from this model. The IEMSSQ includes the Reward/Costs Checklist (RCC). The RCC assesses different sexual exchanges that are categorized into sexual rewards and/or costs. Analyses and comparisons of sexual rewards and costs in the Hispanic cisgender population based on gender (man or woman) and sexual orientation (heterosexual and homosexual) with this measure have not been conducted. The main goal was to analyze and rank the sexual rewards, costs, and both, indicated by a sample of 1996 Hispanic partnered participants (heterosexual men, gay men, heterosexual women, and lesbians). The predominant sexual exchanges that were reported involved emotional aspects, both as rewards and costs. When participants indicated that the exchange was both a reward and a cost, they were referring to aspects specifically related to the sexual relationship itself. Heterosexual men and women had greater rewards and higher costs, respectively. Gay men obtained a greater number of items reported as rewards and costs. The results provide further insight into sexual satisfaction related to gender and sexual orientation.

Relationship between Solitary Masturbation and Sexual Satisfaction: A Systematic Review.

Masturbation is a healthy sexual behavior associated with different sexual functioning dimensions, which highlights sexual satisfaction as an important manifestation of sexual wellbeing. This review aims to systematically examine studies that have associated masturbation with sexual satisfaction, both in individuals with and without a partner. Following the PRISMA statement, searches were made in the APA PsycInfo, Medline, Scopus, and Web of Science databases. The search yielded 851 records, and twenty-two articles that examined the relation between solitary masturbation and sexual satisfaction were selected. In men, a negative relation between masturbation and sexual satisfaction was observed in 71.4% of the studies, 21.4% found no such relation, and 7.2% observed a positive association. In women, 40% reported no relation, 33.3% a negative relation, and 26.7% a positive one. The negative association between solitary masturbation and sexual satisfaction is consistent with the previously proposed compensatory role of masturbation, especially for men. In women, compared to men, the complementary role of masturbation in relation to sexual relationships is observed to a greater extent and is associated more closely with sexual health. The importance of including different parameters beyond the masturbation frequency in future studies to explore its relation with sexual satisfaction is emphasized. This systematic review is registered in PROSPERO (CRD42023416688).

Effects of Subjective Orgasm Experience in Sexual Satisfaction: A Dyadic Analysis in Same-Sex Hispanic Couples.

Subjective orgasm experience (SOE) is a component of sexual health that refers to the perception, sensation and/or appraisal of orgasm at a psychological level. This construct has scarcely been studied in non-heterosexual individuals and couples, and never before from a dyadic perspective. In this study, in which 104 same-sex Hispanic couples participated (48 male-male and 56 female-female), we explored the dyadic influence of SOE dimensions on sexual satisfaction, the mediating role of relationship satisfaction on the association of both phases of sexual response, as well as the explanatory capacity that discrepancies in these dimensions had on sexual satisfaction. The results indicated that the orgasmic dimensions that gained more prominence were Affective and Sensory. A dyadic influence of both on sexual satisfaction was observed only in male couples, as well as a detriment of sexual satisfaction when there were discrepancies in them, especially in women. Moreover, relationship satisfaction was a significant mediator between all dimensions of SOE and sexual satisfaction in both types of couples. This work highlights the need to take into account the SOE of both partners and how this individual experience can affect other dimensions of a more interpersonal nature, such as sexual or relationship satisfaction.

Validation of the Spanish Version of the Massachusetts General Hospital-Sexual Functioning Questionnaire (MGH-SFQ) with Sexual Arousal Measures in Men.

Objective: Provide new validity evidence of the Spanish version of the Massachusetts General Hospital-Sexual Functioning Questionnaire (MGH-SFQ) by associating its scores with measures of sexual arousal. Method: In a sample of 48 men, using a quasi-experimental design, sexual functioning, propensity for sexual inhibition/excitation, subjective sexual arousal, and genital response (penile plethysmography recorded with Biopac MP150 equipment) were evaluated. Results: Arousal and erection scores correlated with sexual inhibition due to the threat of performance failure (r = .29; p < .05) and genital response (r = .31; p < .05), respectively. Participants with difficulties in sexual functioning indicated greater sexual inhibition due to the threat of performance failure (p = .04) and lower intensity in their genital response (p = .05). Conclusions: The validity of the measures obtained with the Spanish version of the MGH-SFQ is supported, showing the erection item to be useful for the detection of possible erectile disorders.

Objetivo: Aportar nuevas evidencias de validez a la versión española del Massachusetts General Hospital-Sexual Functioning Questionnaire (MGH-SFQ), asociando sus puntuaciones a medidas de la excitación sexual. Método: En una muestra de 48 hombres, mediante un diseño cuasiexperimental, se evaluó el funcionamiento sexual, la propensión para la excitación/inhibición sexual, la excitación sexual subjetiva y la respuesta genital (pletismografía peniana registrada con un equipo Biopac MP150). Resultados: Las puntuaciones en excitación y erección del MGH-SFQ correlacionaron significativamente con la inhibición sexual por miedo al fallo en el rendimiento sexual (r = .29; p < .05) y con la respuesta genital (r = .31; p < .05), respectivamente. Los participantes con dificultades en el funcionamiento sexual, en comparación con los que mostraron un adecuado funcionamiento, indicaron mayor inhibición sexual por miedo al fallo en el rendimiento sexual (p = .04) y menor intensidad en su respuesta genital (p = .05). Conclusiones: Se avala la validez de las medidas obtenidas con la versión española del MGH-SFQ, mostrándose el ítem de erección útil para la detección de posibles trastornos eréctiles.

Phenanthrene Degradation by Photosynthetic Bacterial Consortium Dominated by Fischerella sp.

Microbial degradation of aromatic hydrocarbons is an emerging technology, and it is well recognized for its economic methods, efficiency, and safety; however, its exploration is still scarce and greater emphasis on cyanobacteria-bacterial mutualistic interactions is needed. We evaluated and characterized the phenanthrene biodegradation capacity of consortium dominated by Fischerella sp. under holoxenic conditions with aerobic heterotrophic bacteria and their molecular identification through 16S rRNA Illumina sequencing. Results indicated that our microbial consortium can degrade up to 92% of phenanthrene in five days. Bioinformatic analyses revealed that consortium was dominated by Fischerella sp., however different members of Nostocaceae and Weeksellaceae, as well as several other bacteria, such as Chryseobacterium, and Porphyrobacter, were found to be putatively involved in the biological degradation of phenanthrene. This work contributes to a better understanding of biodegradation of phenanthrene by cyanobacteria and identify the microbial diversity related.

Measurement invariance of the Arizona Sexual Experience Scale by sexual orientation: comparing the sexual functioning of gay and heterosexual individuals.

BACKGROUND: The assessment of sexual functioning requires accurate and reliable measures as well as short and easy to apply. The Arizona Sexual Experience Scale (ASEX), which provides a quick, easy, and nonintrusive assessment of sexual functioning in men and women, is a clear example of a commonly used scale that satisfies these qualities. AIM: The study sought to examine measurement invariance and differential item functioning (DIF) by sexual orientation of the Spanish version of the ASEX. METHODS: A confirmatory factor analysis was performed on a sample of 1600 adults (800 gay and 800 heterosexual individuals), testing measurement invariance of the ASEX by sexual orientation in men and women separately, and calculating its reliability and DIF. OUTCOMES: The measure provided by the Spanish version of the ASEX is reliable and valid for assessing the sexual functioning of gay men and lesbians, but comparisons by sexual orientation are not recommended for men. RESULTS: The results of the confirmatory factor analysis confirmed the unidimensional structure of the ASEX already found in the Spanish validation with heterosexual people. Measurement invariance showed that, in the men's sample, the factor structure of the ASEX only reached the weak level of invariance, whereas in the women's sample, strict invariance by sexual orientation was reached. The internal consistency reliability was adequate, with better coefficients in women than in men. No significant DIF was observed in either men or women. CLINICAL IMPLICATIONS: Clinicians should further their training in sexual and gender diversity as approaches such as affirmative LGBT psychotherapy gain popularity, and they must have access to assessment instruments that are psychometrically robust enough to be used with this population. STRENGTHS AND LIMITATIONS: This research has some limitations. Because the distribution was administered solely through social media platforms, those without access to social media were unable to participate. Beyond these restrictions, however, the findings are thought to be significant from a research and clinical perspective since measurement invariance is a step that is often excluded when using an instrument validated in a mostly heterosexual sample. CONCLUSION: Validating assessment tools in gay men and lesbians is essential because sexual functioning is a crucial concept in sexual health. The findings of this study suggest that the Spanish version of the ASEX offers valid and reliable measures of sexual functioning for both heterosexual and gay people, though there would be bias in comparing men of both orientations.

Solitary Sexual Desire: Its Relation to Subjective Orgasm Experience and Sexual Arousal in the Masturbation Context within a Spanish Population.

The tridimensional sexual desire proposal (i.e., dyadic to partner, dyadic to attractive other and solitary) has been empirically supported. However, solitary sexual desire and its relationship to other dimensions of sexual functioning has received less attention. Hence, we examined the capacity of solitary sexual desire to explain the subjective orgasm experience (Study 1) and sexual arousal (Study 2) in the context of solitary masturbation. Study 1, composed of 2406 heterosexual adults (M age = 39.72, SD = 11.81), assessed for solitary sexual desire, dyadic sexual desire, and the intensity of the subjective orgasm experience obtained through solitary masturbation, along with other associated parameters. Study 2, consisting of 41 heterosexual young people (M age = 22.49, SD = 3.17), evaluated the genital response (penile circumference/vaginal pulse amplitude) and subjective arousal to sexually explicit films related to solitary masturbation. In both men and women, solitary sexual desire accounted for a significant percentage of the subjective orgasm experience obtained through solitary masturbation. In addition, in women, the propensity for sexual arousal was explained by solitary sexual desire. It is concluded that solitary sexual desire -as opposed to dyadic- is important to explain sexual arousal and orgasm in the solitary masturbation context. These results highlight the importance of addressing sexual desire in the solitary context, given its implications with other dimensions of sexual functioning.

Measurement Invariance across Sexual Orientation for Measures of Sexual Attitudes.

Despite the growing interest in the study of sexual attitudes across sexual orientation, few studies have tested whether the instruments used to measure them are invariant. This study examined measurement invariance (configural, weak, strong, and strict) across sexual orientation in three different sexual attitude scales: the Sexual Opinion Survey (SOS) to assess erotophilia, the Hurlbert Index of Sexual Fantasy (HISF) to assess attitudes toward sexual fantasies, and the Negative Attitudes Toward Masturbation Inventory (NATMI) to assess negative attitudes toward masturbation. A total of 2293 Spanish adult men and women with different sexual orientations (i.e., heterosexual, bisexual, and gay) participated in the study. The results indicated strict invariance for HISF across sexual orientation and only weak invariance for SOS and NATMI. Differential item functioning was also found in two items of the NATMI scale. Evidence of validity was provided for the three scales that were studied.

Masturbation in middle and late adulthood: its relationship to orgasm.

The relation of masturbation to orgasmic facility and orgasm satisfaction in the sexual relationships context was examined in elderly population. This cross-sectional study included 546 Spanish heterosexual adults aged 50-83 years. They completed a Socio-Demographic Questionnaire, and scales to assess negative attitude towards masturbation, solitary sexual desire, subjective orgasm experience in the solitary masturbation context and orgasmic facility and orgasm satisfaction in sexual relationships. Significant differences were observed on all the masturbation-related indicators between men and women. For men, a regression model was obtained in which age (ß = 0.15), current masturbation frequency (ß = 0.18) and negative attitude towards masturbation (ß = 0.17) explained 8% of the difficulty in orgasmic facility, and another in which age (ß = 0.14) and negative attitude towards masturbation (ß = 0.13) explained 8% of orgasm satisfaction. For women, two regression models were obtained, in which the Affective dimension of the subjective orgasm experience in masturbation explained 11% of orgasmic facility (ß = -0.22) and 15% of orgasm satisfaction (ß = -0.33) in sexual relationships. Significant differences in the intensity of the subjective orgasmic masturbation experience were observed between elderly people with and without difficulties in orgasmic facility and orgasm satisfaction in sexual relationships.

How do heterosexual men and women rate their orgasms in a relational context?

The orgasm experience refers to the psychological self-evaluation of the orgasm. No previous research has compared the characteristics of the orgasm experience between men and women creating a ranking of the adjectives that better represent it. The main objective of this study was to analyze gender differences in the global orgasm experience, its dimensions, and its descriptive words to examine how do heterosexual people rate their orgasms. A sample of 1619 heterosexual adults (793 men, 826 women) completed a background questionnaire and the Orgasm Rating Scale. Results showed that there were significant gender differences in the global orgasm experience and three of its dimensions. Furthermore, fourteen of the 25 descriptive words showed differences between genders. In the ranking, the top five adjectives that better described the orgasm experience were the same in both genders. In conclusion, although differences across gender in the orgasm experience were observed, heterosexual men and women share similar adjectives to rate their orgasms.

Evaluating the Subjective Orgasm Experience Through Sexual Context, Gender, and Sexual Orientation.

The subjective orgasm experience (SOE) is the psychological perception of orgasm sensations and closely related to sexual health. Here, SOE was studied through the context in which it is experienced (sexual relationships and solitary masturbation), gender, and sexual orientation. For this purpose, data were collected from 4255 people (1927 men and 2328 women) of different sexual orientations (heterosexual = 1545; bisexual = 1202; and gay = 1508) who completed two versions of the Orgasm Rating Scale (ORS) for both contexts (i.e., sexual relationships and solitary masturbation) along with a socio-demographic questionnaire. Results showed that the ORS in the context of solitary masturbation is an instrument invariant by gender and sexual orientation. Significant differences in SOE were found by context: it was more intense in the context of sexual relationships (vs. solitary masturbation); by gender: women (vs. men) reported greater intensity; and by sexual orientation, with heterosexual people (vs. gay and bisexual people) having a more intense experience.

Sexual double standard: A gender-based prejudice referring to sexual freedom and sexual shyness.

The sexual double standard (SDS) consists of judging men and women differently for the same sexual behavior. This study contributes to research on the factors that determine inconsistent adherence to the SDS. It uses a descriptive methodology to analyze the association between individual and contextual factors both with adherence to the SDS, and with four SDS adherence typologies (man-favorable SDS, woman-favorable SDS, egalitarian and ambivalent). A total of 1,206 heterosexual Spanish adults (603 men and 603 women) participated. The mean age in the male sample was 41.7 (SD = 14.25), in the female sample M = 40.84 (SD = 14.24). The results show that the conceptualization of SDS as a gender-based prejudice is valid to understand the bias of ingroup favoritism that SDS implies: adherence to SDS is more related to the identity of the gender role of men (vs. women). In addition, evidence is provided that the normative context and domain of sexual behavior (i.e., sexual freedom or sexual shyness) determine the form that SDS adopts to express itself. The domain of behaviors related to sexual shyness (vs. domain related to sexual freedom) better discriminates between the different four SDS adherence typologies. The importance of adopting different levels of analysis (i.e., individual, intergroup, societal) to explain and predict both SDS adherence and the prevalence of SDS adherence typologies is discussed.

The Bem Sex-Role Inventory: Proposal of a short version in Spanish / The Bem Sex-Role Inventory: propuesta de una versión corta en español

El objetivo del estudio fue examinar la estructura factorial, la confiabilidad y proporcionar alguna evidencia de validez de la versión en español del Inventario de Roles Sexuales de Bem (BSRI), que evalúa la autodescripción en términos de rasgos de género. Una muestra de 2.672 participantes españoles, adultos heterosexuales (1.289 hombres, 1.383 mujeres) distribuidos en cuatro grupos de edad (18-25, 26-35, 36-55, 56 años o más), completó una versión en español de 40 ítems delBSRI. Se propone una escala de 8 ítems con estructura bidimensional: Masculinidad (M) y Feminidad (F). Ambos factores presentan una fiabilidad adecuada. Con respecto a la evidencia de validez, los hombres (vs. las mujeres) obtuvieron puntuaciones más altas en M y las mujeres (vs. los hombres) en F. Las puntuaciones M fueron más altas para los participantes menores de 56 años. No se encontraron diferencias en las puntuaciones F entre grupos de edad. Discutimos la utilidad de esta medida para evaluar las diferencias interindividuales, según el sexo y la edad, en la autoatribución de los rasgos de género tradicionales.(AU)

The study objective was to examine the factorial structure, reliability and to provide some evidence for validity of the Spanish version of the Bem Sexual Roles Inventory (BSRI), which assesses self-description in terms of gender traits. A sample of 2,672 Spanish participants, heterosexual adults (1,289 men, 1,383 women) distributed into four age groups (18-25, 26-35, 36-55, 56 years or more), completed a Spanish 40-item version of BSRI. An 8-item scale is proposed with a two-dimensional structure: Masculinity (M) and Femininity (F). Both factors present adequate reliability. Regarding evidence for validity, men (vs. women) scored higher in M, and women (vs. men) in F. The M scores were higher for the participants aged less than 56 years. No differences were found in the F scores among age groups. We discuss the usefulness of this measure to assess interindividual differences, across sex and age, in the self-attribution of traditional gender traits.(AU)

Network and Exploratory Factorial Analysis of the Depression Clinical Evaluation Test.

Depression is a highly prevalent disorder with a wide range of symptomatology. Existing instruments for its assessment have only a few items for each factor. The Depression Clinical Evaluation Test (DCET) has been created to cover all depression symptoms at different times (month, year, and always) with several items for each facet. The content validity of this instrument has been judged by experts and, in this paper, we analyse its factorial structure and make a network analysis of it. The test (196 items) was administered to 602 adults without psychological disorders (Mage = 24.7, SD = 8.38, 72% women) both online and on paper. A network was estimated for each time point, using the absolute minimum selection and shrinkage operator. From the factor analysis, 12 factors were established for month, 11 for year, and 10 for always, leaving 94 items. The network analysis showed that the facets of depressive mood, anhedonia, and thoughts of Death, are central to all the estimated networks. The DCET is proposed as a valid and reliable multifactorial instrument to detect the variability of depressive symptoms in adults, guaranteeing its diagnostic usefulness.

Masturbation parameters related to orgasm satisfaction in sexual relationships: Differences between men and women.

Objective: Masturbation is a behavior that can enhance sexual functioning. This study aims to analyze differences between men and women in different masturbation parameters, and to examine their relation with orgasm satisfaction in sexual relationships. Method: One thousand three hundred and thirty-fifth men and women from the Spanish population aged 18-83 years (M = 36.91; SD = 11.86) participated in an online survey. A questionnaire was used to collect socio-demographic. Sexual history data, negative attitude toward masturbation, solitary sexual desire and orgasm subjective experience upon masturbation were assessed. Given the differences between men and women, independent regression models are proposed to explain orgasm satisfaction in the sexual relationships context. Findings: Men, compared to women, masturbated at a younger age (p < 0.001), and reported higher current masturbation frequency (p < 0.001) and more solitary sexual desire (p < 0.001). Women reported greater intensity in the subjective orgasm experience on its Affective (p < 0.001), Sensory (p < 0.001) and Intimacy (p < 0.001) dimensions. Regarding regression models, the Affective dimension of orgasm was a common parameter in men (ß = 0.36; p < 0.001) and women (ß = 0.24) to explain orgasm satisfaction during sexual relationships. In men, solitary masturbation frequency (ß = -0.10; p = 0.027) acquired a significant role. In women, the model also included age (ß = 0.09; p = 0.038), negative attitude toward masturbation (ß = -0.12; p = 0.005) and solitary sexual desire (ß = -0.19; p = 0.001). Conclusion: When dealing with men and women's orgasm difficulties in the sexual relationships context, it is important to consider the role of masturbation. In men and women, the Affective dimension of the orgasm experience explain the orgasm satisfaction in sexual relationship. Also, in men, the solitary masturbation frequency is negatively related with orgasm satisfaction in sexual relationship, supporting the compensatory hypothesis of masturbation. In women, in addition to the Affective dimension, the orgasm satisfaction in sexual relationship is explained, negatively, by the negative attitude toward masturbation, and positively, by the solitary sexual desire, which could be associated with more sexual self-knowledge. The relevance of masturbation in understanding sexual functioning is highlighted.

Propiedades psicométricas del Massachusetts General Hospital-Sexual Functioning Questionnaire en personas mayores / Psychometric properties of the Massachusetts General Hospital-Sexual Functioning Questionnaire in elderly people

Antecedentes y objetivo: En México las disfunciones sexuales son un problema relevante, siendo la depresión y la edad los principales predisponentes. Por ello se considera necesario contar con instrumentos de evaluación validados en población mayor mexicana. El objetivo del presente estudio fue examinar las propiedades psicométricas del Massachusetts General Hospital-Sexual Functioning Questionnaire (MGH-SFQ) en dicha población.Materiales y métodos: La muestra estuvo compuesta de 634 personas mayores del noreste de México seleccionadas mediante procedimiento no probabilístico. Se utilizaron como mediciones el MGH-SFQ y la Escala de Depresión del Centro de Estudios Epidemiológicos.Resultados: Se confirma la estructura unifactorial del MGH-SFQ en varones y en mujeres mayores (RMSEA=0,04; CFI=0,92; RMSEA=0,03; CFI=0,95), presentando fiabilidad de consistencia interna adecuada y adecuadas evidencias de validez de sus medidas, al asociarse de manera significativa con la edad y la depresión.Conclusiones: El MGH-SFQ es un cuestionario que proporciona medidas fiables y válidas del funcionamiento sexual en varones y mujeres mayores mexicanos. (AU)

Aim and background: In Mexico sexual dysfunctions are a relevant problem, depression and age are the main predisposing factors. Whereby it is necessary to considerate to have valid evaluation instruments in Mexican population. The aim of the study was to examine the psychometric properties of Massachusetts General Hospital-Sexual Functioning Questionnaire (MGH-SFQ) in that population.Materials and methods: The sample was 634 Northeast Mexican elderly, selected by a non-probabilistic procedure. The MGH-SFQ and the Depression Scale of the Center for Epidemiological Studies were used as measurements.Results: The unifactorial structure is confirmed in elderly men and woman (RMSEA=.04; CFI=.92; RMSEA=.03; CFI=.95) shows adequate internal consistency reliability and adequate validity evidence of its measures.Conclusions: The MGH-SFQ is a questionnaire that provides reliable and valid measures of sexual functioning in Mexican elderly men and woman. (AU)