16 research outputs found
Propriedades psicométricas do Questionário de Atitudes em relação à Prática da Actividade Físico-Sportiva Orientada para a Saúde em adolescentes peruanos
Attitudes predict the commitment towards the practice of physical-sport activity, the more they are known, the better the prediction of the possible habits that people will adopt. Therefore, it is necessary to have a valid and reliable instrument, current and adaptable to various contexts, especially for adolescence, which is a fundamental stage in the adoption of healthy lifestyles. The objective of this study was to analyze the psychometric properties of the Questionnaire on Attitudes towards the practice of Health-oriented Physical-sports Activity (QAHPA) in Peruvian school adolescents. This is a cross-sectional descriptive study in which 1314 adolescents aged between 13 and 19 years (15.59±1.05 years) participated, comprised of 716 men and 598 women from Lima and Callao, Peru. Using the R version 4.1.0 software, the Exploratory Factor Analysis (EFA), the Confirmatory Factor Analysis (CFA) and the Reliability Calculation were performed. The results of the EFA yielded a model of three factors of the QAHPA, which explains 35% of the total variance. The CFA reported a good fit of the 19-item QAHPA three-factor model (Chi-Square divided by The Degree of Freedom = 2.38; Root Mean Square Error of Approximation = .046; Standardized Root Mean Square Residual = .060; Comparative Fit Index = .940; Tuker-Lewis Index = .931). The Omega Reliability Coefficient reported a value of .77. Finally, it was shown that the 19-item CAAFS is valid and reliable to be applied in Peruvian adolescents.Las actitudes predicen el compromiso hacia la práctica de actividad físico-deportiva. Cuanto más se conozcan, mejor será la predicción de los posibles hábitos que las personas adoptarán. Por tanto, es necesario contar con un instrumento que evidencie validez y fiabilidad, especialmente para adolescentes, ya que la adolescencia constituye una etapa fundamental en la adopción de estilos de vida saludables. El objetivo de este estudio fue analizar las propiedades psicométricas del Cuestionario de Actitudes hacia la Práctica de Actividad Físico-Deportiva Orientada a la Salud (CAAFS) en adolescentes peruanos. Se trata de un estudio descriptivo transversal en el que participaron 1314 adolescentes de edades entre 13 y 19 años (15.59±1.05 años), conformados por 716 hombres y 598 mujeres provenientes de Lima y Callao, Perú. Mediante el software R versión 4.1.0., se efectuó la validez de constructo (Análisis Factorial Exploratorio [AFE] y el Análisis Factorial Confirmatorio [AFC]) y el cálculo de fiabilidad. Los resultados del AFE arrojaron un modelo con tres factores del CAAFS, que explica el 35 % de la varianza total. El AFC reportó un buen ajuste del modelo de tres factores del CAAFS de 19 ítems (Chi-cuadrado sobre los grados de libertad = 2.38; error de aproximación cuadrático medio = .046; residuo cuadrático medio estandarizado = .060; índice de ajuste comparativo = .940; índice de Tuker-Lewis = .931). El coeficiente de fiabilidad Omega reportó un valor de .77. Finalmente se demostró que el CAAFS de 19 ítems evidencia validez y fiabilidad; por lo tanto, el cuestionario puede ser aplicado en adolescentes del contexto peruano.As atitudes prevêem o empenho na prática da actividade física e desportiva; quanto mais forem conhecidas, melhor será a previsão dos possíveis hábitos que as pessoas irão adoptar. Por conseguinte, é necessário ter um instrumento válido e fiável, actual e adaptável a diferentes contextos, especialmente para a adolescência, que é uma fase chave na adopção de estilos de vida saudáveis. O objectivo deste estudo era analisar as propriedades psicométricas do questionário de atitudes em relação à prática da actividade física e desportiva orientada para a saúde (CAAFS) em adolescentes peruanos em idade escolar. É um estudo descritivo transversal no qual participaram 1314 adolescentes entre 13 e 19 anos (15,59±1,05 anos), compreendendo 716 homens e 598 mulheres de Lima e Callao, Peru. A análise dos factores exploratórios (EFA), a análise dos factores de confirmação (CFA) e o cálculo da fiabilidade foram realizados utilizando o software R versão 4.1.0. Os resultados da AAE produziram um modelo de três factores do CAAFS, o que explica 35% da variação total. O CFA relatou um bom ajuste do modelo de três factores CAAFS de 19 itens (Qui-quadrado sobre graus de liberdade = 2,38; erro quadrático médio de aproximação = 0,046; raiz média quadrada residual padronizada = 0,060; índice de ajuste comparativo = 0,940; índice Tuker-Lewis = 0,931). O coeficiente de fiabilidade ómega comunicou um valor de 0,77. Finalmente, foi demonstrado que o CAAFS de 19 itens é válido e fiável para ser aplicado em adolescentes peruanos
Dietary diversity and nutritional adequacy among an older Spanish population with metabolic syndrome in the PREDIMED-Plus study: a cross-sectional analysis
Dietary guidelines emphasize the importance of a varied diet to provide an adequate nutrient intake. However, an older age is often associated with consumption of monotonous diets that can be nutritionally inadequate, increasing the risk for the development or progression of diet-related chronic diseases, such as metabolic syndrome (MetS). To assess the association between dietary diversity (DD) and nutrient intake adequacy and to identify demographic variables associated with DD, we cross-sectionally analyzed baseline data from the PREDIMED-Plus trial: 6587 Spanish adults aged 55-75 years, with overweight/obesity who also had MetS. An energy-adjusted dietary diversity score (DDS) was calculated using a 143-item validated semi-quantitative food frequency questionnaire (FFQ). Nutrient inadequacy was defined as an intake below 2/3 of the dietary reference intake (DRI) forat least four of 17 nutrients proposed by the Institute of Medicine (IOM). Logistic regression models were used to evaluate the association between DDS and the risk of nutritionally inadequate intakes. In the higher DDS quartile there were more women and less current smokers. Compared with subjects in the highest DDS quartile, those in the lowest DDS quartile had a higher risk of inadequate nutrient intake: odds ratio (OR) = 28.56 (95% confidence interval (CI) 20.80-39.21). When we estimated food varietyfor each of the food groups, participants in the lowest quartile had a higher risk of inadequate nutrient intake for the groups of vegetables, OR = 14.03 (95% CI 10.55-18.65), fruits OR = 11.62 (95% CI 6.81-19.81), dairy products OR = 6.54 (95% CI 4.64-9.22) and protein foods OR = 6.60 (95% CI 1.96-22.24). As DDS decreased, the risk of inadequate nutrients intake rose. Given the impact of nutrient intake adequacy on the prevention of non-communicable diseases, health policies should focus on the promotion of a healthy varied diet, specifically promoting the intake of vegetables and fruit among population groups with lower DDS such as men, smokers or widow(er)s
Medición de los niveles séricos de Estradiol en ratas Ooforectomizadas, tratadas con Lepidium Meyenii Walp (Maca) .
RESUMENEl Lepidium meyenii Walp (Maca) se ha asociado por mucho tiempo como una terapia para la sintomatología asociada en las mujeres posmenopáusicas en la sierra del Perú. Estudios sobre su composición han revelado la presencia de flavonoides.OBJETIVOEvaluar el efecto de la aplicación subcutánea de extracto hexánico de Lepidium meyenii Walp sobre los niveles séricos de estradiol, el peso corporal, el peso vaginal y uterino luego de cinco días de tratamiento en ratas ooforectomizadas.MATERIAL Y MÉTODOSEstudio experimental aleatorizado. Se evaluaron 56 ratas distribuidas en seis grupos de estudios: control (9 animales), falso operado (9 animales), operado + maca (10 animales), operado + estradiol (9 animales), falso operado + maca (10 animales) y falso operado + estradiol (9 animales). Los grupos operados fueron sometidos a una ooforectomí
Reproducibility and Validity of a Short Food Frequency Questionnaire for Dietary Assessment in Children Aged 7–9 Years in Spain
The purpose of this study was to examine if the short semi-quantitative food frequency questionnaire (FFQ) is a reliable and valid tool to assess the diet of Spanish children aged 7−9 years. We collected data from 156 children of the birth cohort INMA (Infancia y Medio Ambiente (Environment and Childhood)). Children’s parents or care-givers completed a 46-item FFQ on two occasions over a 9−12-month period about the children’s diet. To explore the reproducibility of the FFQ, the nutrient and food group intake collected from the both FFQs were compared, while validity was examined by contrasting the nutrient values from the FFQs and the average of three 24-hour dietary recalls (24hDRs) taken in this period, and also with the concentration of several vitamins in the blood (carotenoids, vitamin D and α-tocopherol). Pearson and de-attenuated correlation coefficients were calculated. The average correlation coefficients for nutrient intake’s reproducibility was 0.41, ranging from 0.25 (calcium) to 0.65 (β-carotene), and for food group intake was 0.45, ranging from 0.18 (cereals) to 0.68 (sweetened beverages). Correlation coefficients slightly improved when we compared energy-adjusted intakes. The average correlation coefficients for validity against 24hDRs was 0.34 for energy-adjusted intakes, and 0.39 when de-attenuation coefficients were used. The validity coefficients against the blood concentrations of vitamins were 0.38 for β-cryptoxanthin, 0.26 for lycopene, 0,23 for α-carotene and 0.15 for β-carotene, all of them statistically significant (p < 0.05). This study suggests that our brief FFQ is a suitable tool for the dietary assessment of a wide range of nutrients and food groups in children 7−9 years, despite the low to moderate reproducibility and validity observed for some nutrients