Body weight perception, weight control behavior and quality of life in Mexican adolescents of secondary school / Percepción del peso corporal, comportamiento de control de peso y calidad de vida en adolescentes mexicanos estudiantes de secundaria

Abstract. This cross-sectional study analyzed by gender the association between body weight perception and weight control behavior with quality of life (QL) in 563 middle school students (age x̅ = 13.3, SD = 0.94), from all grades of nine middle schools of South region of Jalisco state realized in 2010. There were 51.9% boys and 19.8% worked. A self-administered questionnaire on line was used (YQOL-R), perceptual module, and five items of body weight adapted from 2009 Middle School YRBS. Statistical analysis included chi squared, Student t test, Spearman correlation, ANOVA and Tamhane ́s T2. Results: QOL was higher in normal weight perception category than low weight or overweight perception categories; a negative correlation between QOL and weight perception was observed (overweight rs = -.22; low weight rs = -.16); QOL was lower in those who tried to maintain weight in total sample and in girls in relation to those who tried to maintained it. We concluded that weight control behavior is associated with weight perception and both are associated with quality of life. Gender was important to understand the variables studied. Key words: weight perception, obesity, weight control behaviors, quality of life, adolescent.   Resumen. Este estudio transversal analizó la asociación de la percepción del peso corporal y el comportamiento alimentario de control de peso con la calidad de vida (CV) por género, en 563 estudiantes de secundaria (edad x̅ = 13.3, DE = 0.94) de todos los grados de nueve secundarias de la región del sur de Jalisco realizado en 2010. Eran 51.9% varones, 19.8% del total trabajaban. Se auto-administró en línea un cuestionario de CV (YQOL-R) módulo perceptual, y cinco ítems acerca del peso adapta- dos del 2009 Middle School YRBS. Estadística: chi cuadrada, t de Student, p de Spearman y ANOVA, T2 de Tamhane. Resultados: CV más alta para peso percibido cercano al correcto, respecto a bajo peso y sobrepeso; correlación negativa entre CV y percepción del peso (sobrepeso rs = -.22; bajo peso rs = -.16); CV más baja en quienes trataban de mantenerse en su peso en muestra total y en mujeres respecto a las que querían mantenerlo. Concluimos que el comportamiento alimentario está asociado de manera importante a la percepción del peso y ambos a la calidad de vida, y el género es fundamental para comprender las variables estudiadas. Palabras clave: Percepción del peso, control de peso, comportamientos alimentarios, calidad de vida, adolescente

Body weight perception, weight control behavior and quality of life in Mexican adolescents of secondary school / Percepción del peso corporal, comportamiento de control de peso y calidad de vida en adolescentes mexicanos estudiantes de secundaria

Abstract. This cross-sectional study analyzed by gender the association between body weight perception and weight control behavior with quality of life (QL) in 563 middle school students (age x̅ = 13.3, SD = 0.94), from all grades of nine middle schools of South region of Jalisco state realized in 2010. There were 51.9% boys and 19.8% worked. A self-administered questionnaire on line was used (YQOL-R), perceptual module, and five items of body weight adapted from 2009 Middle School YRBS. Statistical analysis included chi squared, Student t test, Spearman correlation, ANOVA and Tamhane ́s T2. Results: QOL was higher in normal weight perception category than low weight or overweight perception categories; a negative correlation between QOL and weight perception was observed (overweight rs = -.22; low weight rs = -.16); QOL was lower in those who tried to maintain weight in total sample and in girls in relation to those who tried to maintained it. We concluded that weight control behavior is associated with weight perception and both are associated with quality of life. Gender was important to understand the variables studied. Key words: weight perception, obesity, weight control behaviors, quality of life, adolescent.   Resumen. Este estudio transversal analizó la asociación de la percepción del peso corporal y el comportamiento alimentario de control de peso con la calidad de vida (CV) por género, en 563 estudiantes de secundaria (edad x̅ = 13.3, DE = 0.94) de todos los grados de nueve secundarias de la región del sur de Jalisco realizado en 2010. Eran 51.9% varones, 19.8% del total trabajaban. Se auto-administró en línea un cuestionario de CV (YQOL-R) módulo perceptual, y cinco ítems acerca del peso adapta- dos del 2009 Middle School YRBS. Estadística: chi cuadrada, t de Student, p de Spearman y ANOVA, T2 de Tamhane. Resultados: CV más alta para peso percibido cercano al correcto, respecto a bajo peso y sobrepeso; correlación negativa entre CV y percepción del peso (sobrepeso rs = -.22; bajo peso rs = -.16); CV más baja en quienes trataban de mantenerse en su peso en muestra total y en mujeres respecto a las que querían mantenerlo. Concluimos que el comportamiento alimentario está asociado de manera importante a la percepción del peso y ambos a la calidad de vida, y el género es fundamental para comprender las variables estudiadas. Palabras clave: Percepción del peso, control de peso, comportamientos alimentarios, calidad de vida, adolescente

Bibliometric analysis of scientific production of Mexican Journal of Eating Disorders, 2010-2014

AbstractThe aim of this research was to characterize the scientific production of the Revista Mexicana de Trastornos Alimentarios/Mexican Journal of Eating Disorders during the 2010-2014 period. A retrospective and descriptive analysis of published articles in the period 2010-2014 was performed. The type of production, authorship pattern, country, average number of references per article, and type of documents cited were analyzed. The results showed that 70 articles were published in five volumes of the Revista Mexicana de Trastornos Alimentarios/Mexican Journal of Eating Disorders. The highest percentage was original studies (64.28%). The mean number of author per article was four, and five women were the highest productive ones. Mexican researchers have been made the most percentage of contributions (60%) and most of them belong to the Universidad Nacional Autónoma de México. Furthermore, the collaboration among researchers of two or three different countries was identified. On average of 46 references were cited per article, mostly of them were scientific journal articles. It is concluded that Revista Mexicana de Trastornos Alimentarios/Mexican Journal of Eating Disorders showed similar indexes to those obtained by health journals and psychology journals.ResumenEl objetivo de esta investigación fue caracterizar la producción científica de la Revista Mexicana de Trastornos Alimentarios/Mexican Journal of Eating Disorders del periodo 2010-2014. Se llevó a cabo un análisis descriptivo retrospectivo de los artículos publicados en el periodo 2010-2014. Se analizó el tipo de artículo, el patrón de autoría, país, promedio de referencias incluidas en los artículos y tipo de referencia incluida. Los resultados mostraron que se publicaron 70 artículos en los cinco volúmenes de la Revista Mexicana de Trastornos Alimentarios/Mexican Journal of Eating Disorders. El mayor porcentaje de artículos correspondió a trabajos originales (64.28%). El promedio de autores por artículo fue de cuatro y se identificaron cinco autoras con la mayor producción. Investigadores mexicanos han realizado el mayor porcentaje de contribuciones (60%) y la mayoría pertenece a la Universidad Nacional Autónoma de México. Asimismo, se identificó la colaboración entre investigadores de dos o tres países. En promedio se incluyeron 46 referencias por artículo, principalmente artículos de revistas científicas. Se concluye que la Revista Mexicana de Trastornos Alimentarios/Mexican Journal of Eating Disorders presentó índices similares a los obtenidos en revistas del área de la salud y de psicología

Adaptación transcultural y validación de la Brief Resilience Scale (BRS) para jóvenes chilenos

The study of resilience as recovery from stress has been extended, and it is necessary to account for the development and psychometric properties of the scales that allow it to be used. The aim was to report on the cross-cultural adaptation process and psychometric properties of the Brief Resilience Scale (BRS) in young Chilean population. In 2016, three translators, and 1,237 students between 18 and 24 years old from a university in the Fifth Region of Chile participated. Linguistic and conceptual equivalence was achieved after carried out a double translation, back-translation and cognitive interviews with the target population. Difficulties were observed in item 2. From the Exploratory Factor Analysis, two factors emerged. In the Confirmatory Factorial Analysis, the fit indexes were suitable: χ2 = 9.256(6), p = .160; CFI = .995; TLI = .988; RMSEA = .035 CI 90% [.000, .076]. Total omega was .81. The stability per item was moderate; and high for the total score. Means were generally lower in women than in men but similar among age groups. It has evidence for concurrent and convergent validity. The BRS Chilean version might be useful for measuring resilience in young Chileans.El estudio de la resiliencia como recuperación del estrés se ha extendido, y se requiere dar cuenta del desarrollo y las propiedades psicométricas de las escalas que permiten utilizarla. El objetivo fue adaptar transculturalmente la Brief Resilience Scale (BRS) y evaluar sus propiedades psicométricas en población joven chilena. Participaron en el año 2016, tres traductores, y 1,237 estudiantes de 18 a 24 años de una universidad de la zona Central de Chile, 60.8% mujeres y 39.2% hombres. Se consiguió la equivalencia lingüística y conceptual después de una doble traducción, retro traducción y de realizar las entrevistas cognitivas con la población diana. Se observaron dificultades en el ítem 2.  Del Análisis Factorial Exploratorio surgieron dos factores. Los índices de ajuste del Análisis Factorial Confirmatorio fueron adecuados: χ2 = 9.256(6), p = .160; CFI = .995; TLI = .988; RMSEA = .035, IC 90% [.000, .076]. El omega total .81. La estabilidad por ítem fue moderada y para la puntuación total, elevada. Las medias en general fueron menores en mujeres, pero similares entre grupos de edad. Hubo evidencia de validez concurrente y convergente. La versión chilena de la BRS puede ser útil para medir la resiliencia en jóvenes chilenos

Scale of Estimation and Consumption of Foods in Children: Evaluation of their psychometric properties

The strategies to reduce overweight and obesity have not had the expected impact. It is necessary to develop greater knowledge regard food estimation and intake frequency. Therefore, the purpose of this study was to examine the psychometric properties of an instrument aimed at the evaluation of meals (EM) and its intake frequency (IFR) in children. A total of 1,090 9-year-old boys and girls from the South region of Jalisco (Mexico) answered the Scale of Estimation and Consumption of Foods in Children, which consists of two sections: EM and IFR. The exploratory factor analysis carried out with 545 participants derived three factors for each section, which were subsequently corroborated based on two confirmatory factor analyses, one per section, performed with the second half of the sample (n = 545). Both models registered some goodness of fit indexes. The final version of the scale, with 23 items, showed appropriate internal consistency in its both sections: EM (α = .86) and IFR (α = .84). The need to extend the analysis of the psychometric properties of the scale in children from other regions of the country is discussed

Omecamtiv mecarbil in chronic heart failure with reduced ejection fraction, GALACTIC‐HF: baseline characteristics and comparison with contemporary clinical trials

Aims: The safety and efficacy of the novel selective cardiac myosin activator, omecamtiv mecarbil, in patients with heart failure with reduced ejection fraction (HFrEF) is tested in the Global Approach to Lowering Adverse Cardiac outcomes Through Improving Contractility in Heart Failure (GALACTIC‐HF) trial. Here we describe the baseline characteristics of participants in GALACTIC‐HF and how these compare with other contemporary trials. Methods and Results: Adults with established HFrEF, New York Heart Association functional class (NYHA) ≥ II, EF ≤35%, elevated natriuretic peptides and either current hospitalization for HF or history of hospitalization/ emergency department visit for HF within a year were randomized to either placebo or omecamtiv mecarbil (pharmacokinetic‐guided dosing: 25, 37.5 or 50 mg bid). 8256 patients [male (79%), non‐white (22%), mean age 65 years] were enrolled with a mean EF 27%, ischemic etiology in 54%, NYHA II 53% and III/IV 47%, and median NT‐proBNP 1971 pg/mL. HF therapies at baseline were among the most effectively employed in contemporary HF trials. GALACTIC‐HF randomized patients representative of recent HF registries and trials with substantial numbers of patients also having characteristics understudied in previous trials including more from North America (n = 1386), enrolled as inpatients (n = 2084), systolic blood pressure < 100 mmHg (n = 1127), estimated glomerular filtration rate < 30 mL/min/1.73 m2 (n = 528), and treated with sacubitril‐valsartan at baseline (n = 1594). Conclusions: GALACTIC‐HF enrolled a well‐treated, high‐risk population from both inpatient and outpatient settings, which will provide a definitive evaluation of the efficacy and safety of this novel therapy, as well as informing its potential future implementation

Calidad de vida y comportamientos de riesgo en estudiantes universitarios

Se midió un estudiantes universitarios adolescentes, la calidad de vida (CV) y los comportamientos de riesgo (CR) de lesiones no intencionales y violencia, uso de tabaco, alcohol y otras drogas, relacionadas sexuales inseguras alimentación inadecuada y actividad física deficitaria, la asociación con características sociodemográficas y analizar las asociaciones entre CV y CR. Se planificó un estudio observacional, transversal y analítico de una población de 380 estudiantes de menos de 19 años (87,96% del total de esas edades) que ingresaron a carreras de Licenciatura, Técnico y Técnico Superior Universitario, calendario B, del Centro Universitario del Sur de la Universidad de Guadalajara, México en agosto de 2006. El 66,6% pertenecía al género femenino; 99,2% tenían entre 17 y 18 años de edad; 99% eran solteros; 26,3% trabajan y un 45,2% eran de nivel socioeconómico medio alto y alto. Se les aplicó un instrumento auto administrado en línea, basado en: 1,- La versión en español del cuestionario Youth Quality of Life - Research Versión (YQOL-R) con cuatro dominios (general, personal relacional y ambiental) con 65 ítmes de los que se analizó el módulo perceptual (42 ítmes). 2,- Del Youth Risk Behavior Surveillance YRBS 2007, 30 ítems y se agrego 2. 3,- 9 Sociodemográficas además de 9 personales escolares. Se utilizó la estadística descriptiva para la frecuencia de la CV y Cr por variables sociodemográficas. Se probó la normalidad del índice total de CV y la cantidad de Cr aplicando pruebas de normalidad Kolgomorov-Smirnov y Shapiro-Wilk y se utilizó U de Mann Withney y Chi cuadrado para conocer las diferencias en variables sociodemográficas. Para conocer la asociación entre CV y Cr se aplicó p de Spearmn y se buscaron modelos significativos mediante regresión logística multinominal. Como principios éticos se solicitó el consentimiento informado, participación voluntaria y confidencialidad de la información

Body weight perception, weight control behavior and quality of life in Mexican adolescents of secondary school

Este estudio transversal analizo la asociacion de la percepcion del peso corporal y el comportamiento alimentario de control de peso con la calidad de vida (CV) por genero, en 563 estudiantes de secundaria (edad x. = 13.3, DE = 0.94) de todos los grados de nueve secundarias de la region del sur de Jalisco realizado en 2010. Eran 51.9% varones, 19.8% del total trabajaban. Se auto-administro en linea un cuestionario de CV (YQOL-R) modulo perceptual, y cinco items acerca del peso adaptados del 2009 Middle School YRBS. Estadistica: chi cuadrada, t de Student, p de Spearman y ANOVA, T2 de Tamhane. Resultados: CV mas alta para peso percibido cercano al correcto, respecto a bajo peso y sobrepeso; correlacion negativa entre CV y percepcion del peso (sobrepeso rs = -.22; bajo peso rs = -.16); CV mas baja en quienes trataban de mantenerse en su peso en muestra total y en mujeres respecto a las que querian mantenerlo. Concluimos que el comportamiento alimentario esta asociado de manera importante a la percepcion del peso y ambos a la calidad de vida, y el genero es fundamental para comprender las variables estudiadas.This cross-sectional study analyzed by gender the association between body weight perception and weight control behavior with quality of life (QL) in 563 middle school students (age x. = 13.3, SD = 0.94), from all grades of nine middle schools of South region of Jalisco state realized in 2010. There were 51.9% boys and 19.8% worked. A self-administered questionnaire on line was used (YQOL-R), perceptual module, and five items of body weight adapted from 2009 Middle School YRBS. Statistical analysis included chi squared, Student t test, Spearman correlation, ANOVA and Tamhane�Ls T2. Results: QOL was higher in normal weight perception category than low weight or overweight perception categories; a negative correlation between QOL and weight perception was observed (overweight rs = -.22; low weight rs = -.16); QOL was lower in those who tried to maintain weight in total sample and in girls in relation to those who tried to maintained it. We concluded that weight control behavior is associated with weight perception and both are associated with quality of life. Gender was important to understand the variables studied

El tratamiento de la Aquiescencia y la Estructura Factorial de la Escala Breve de Resiliencia (BRS) en estudiantes universitarios mexicanos y chilenos

El objetivo del presente estudio fue evaluar la estructura facto- rial de la versión en castellano de la Escala Breve de Resiliencia (BRS) to- mando en cuenta la aquiescencia (tendencia a responder de manera positi- va) en una muestra de estudiantes universitarios mexicanos (N = 1572) y una validación cruzada de los mismos modelos con estudiantes universita- rios chilenos (N = 1345). Se comparan seis modelos mediante Análisis Factorial Confirmatorio, en tres de ellos se utilizan diferentes factores de método para tratar la aquiescencia. Los resultados muestran que en estu- diantes mexicanos se observa mejor ajuste en estos modelos, especialmente en el modelo de un factor teórico llamado Resiliencia que tiene dos facto- res de método ( 2 =32.22, gl=7, p < .001, NFI= .98, GFI = .99, RMSEA = .048), mientras que en estudiantes chilenos los modelos que no utilizan factores para tratar la aquiescencia son los de mejor ajuste, específicamente los modelos de dos factores correlacionados y también el modelo al que se añade un factor de segundo orden ( 2 =34.66, gl=8, p < .001, NFI= .98, GFI = .99, RMSEA = .05). La aquiescencia afecta de manera diferencial a las muestras utilizadas por lo que es importante analizar la presencia de es- tilos de respuesta asociados a la aquiescencia.The aim of this study was to evaluate the factorial structure of the Spanish version of Brief Resilience Scale (BRS) considering the acqui- escence bias (tendency to respond for one side of the scale) in a large sample of Mexican university students (N=1572) and a cross-validation of the same models with Chilean university students (N=1345). Six models are compared using Factorial Confirmatory Analysis, in three of them dif- ferent method factors are used to treat acquiescence. The results show that in Mexican students a better fit is observed in these models especially in the model of a general factor called Resilience that has two factors of method ( 2 =32.22, gl=7, p < .001, NFI= .98, GFI = .99, RMSEA = .048), while in the Chilean students the models that do not use factors to deal with acquiescence are the ones of better fit, specifically the models of two correlated factors and also the model to which a factor of second or- der is added ( 2 =34.66, gl=8, p < .001, NFI= .98, GFI = .99, RMSEA = .05). The acquiescence affects each of the samples used differently, so it is important to analyze the presence of response styles associated with acqui- escence