Construcción y validación de un atlas fotográfico de alimentos para niños de 1 a 5 años de Argentina / Development and validation of a photographic food atlas for children from 1 to 5 years of age in Argentina

Resumen Introducción: las fotografías de alimentos son ayudas que se utilizan para estimar el tamaño de las porciones en la evaluación dietética. Se ha demostrado que aquellas diseñadas para la población adulta son inapropiadas para evaluar la ingesta en niños. Actualmente, Argentina no cuenta con fotografías de alimentos diseñadas para la población de niños menores de 5 años. Objetivo: construir y validar un atlas fotográfico de alimentos para niños de 1 a 5 años de Argentina. Materiales y método: se realizó un estudio de investigación-acción que se dividió en dos etapas. En la primera se construyó un atlas fotográfico de alimentos y, en la segunda se validó el instrumento mediante un estudio exploratorio observacional transversal con enfoque cuali-cuantitativo llevado a cabo en dos establecimientos educativos de la ciudad de La Plata. El atlas fotográfico cuenta con 77 series de fotografías de alimentos. La validación se llevó a cabo mediante sesiones de percepción visual en tiempo real. Se realizó una valoración de las características visuales y del contenido del atlas por licenciadas en Nutrición mediante una encuesta semiestructurada. Resultados: participaron 168 padres o cuidadores voluntarios, 102 mujeres y 66 hombres. El número total de estimaciones del tamaño de la porción fue de 2856, de las cuales un 65,5% resultaron correctas. Los alimentos estimados por debajo del 60% fueron: sémola, puré de zapallo, zanahoria rallada, manzana, zapallito verde, ensalada de frutas y arroz con leche. El atlas fue valorado por 21 licenciadas en Nutrición, de las cuales a un 47,6% le pareció que el diseño y contenido eran adecuados. Conclusión: si bien se deben mejorar aquellas series que generaron dificultades en la estimación de la porción, el atlas fotográfico de alimentos resultó ser una herramienta útil para estimar la ingesta en niños de 1 a 5 años.

Abstract Introduction: food photographs are aids used in estimating portion sizes in dietary evaluation. Those designed for the adult population have been shown to be inappropriate for evaluating intake in children. Currently, Argentina does not have food photographs designed for the population of children under 5 years of age. Objective: To develop and validate a photographic food atlas for children from 1 to 5 years old in Argentina. Materials and method: an action-research study was carried out, divided into two stages. In the first, a photographic food atlas was develop and in the second, the instrument was validated through an exploratory cross-sectional observational study with a quali-quantitative approach carried out in two educational establishments in the city of La Plata. The photographic atlas has 77 series of food photographs. The validation was carried out through visual perception sessions in real time. An assessment of the visual characteristics and the content of the atlas was carried out by Nutrition Graduates through a semi-structured survey. Results: 168 voluntary parents or caregivers participated, 102 women and 66 men. The total number of portion size estimates was 2,856, of which 65.5% were correct. Foods estimated to be below 60% were semolina, pumpkin puree, grated carrot, apple, zucchini, fruit salad, and rice pudding. The atlas was evaluated by 21 Nutrition Graduates, of which 47.6% thought that its design and content were adequate. Conclusion: although those series that generated difficulties in estimating the portion should be improved, the photographic food atlas turned out to be a useful tool to estimate the intake in children aged 1 to 5.

Estimación del peso de porciones de alimentos ilustrados en fotografías digitales / Estimation of weight of food portions depicted in digital photographs

Resumen: Objetivo: Evaluar el uso de fotografías digitales para estimar el peso de diferentes preparaciones de alimentos. Metodología: Se compraron 102 platos servidos como almuerzos, desayunos y repostería de 52 establecimientos comerciales en San Pedro de Montes de Oca, se pesaron y fotografiaron los alimentos servidos, resultando un total de 261 porciones de alimentos. Al recibir por correo las imágenes digitales de los platos de comida, se estimó el peso de cada alimento por medio de una comparación con un manual de fotografías estándar. El proceso de pesaje y fotografiado de los alimentos fue realizado de forma independiente del proceso de estimación del peso. Para comparar los pesos reales y los pesos estimados se utilizó la prueba t de Student y coeficientes de correlación. Resultados: Para 6 de los 11 tipos de alimentos, el peso estimado presentado en una imagen digital no fue significativamente diferente al peso real y ambos valores tenían un grado de asociación significativo. En el caso de los otros 5 tipos de alimentos que consistían en preparaciones con un mayor número de ingredientes, hubo diferencias significativas entre los pesos estimados y los pesos reales. Conclusión: En el caso de alimentos simples o con pocos ingredientes, ilustrados en fotografías digitales, su peso se estimó con suficiente exactitud; no así para preparaciones con varios ingredientes. Se requiere más investigación antes de recomendar su uso en encuestas de consumo de alimentos.

Abstract: Objective: To assess the use of digital images for estimating the weight of different portions of foods. Methods: 102 dishes from 52 commercial sites in San Pedro, Montes de Oca, served as lunches, breakfast, and snacks, consisting of a total of 261 portions of foods were purchased, photographed and weighed. On receiving the digital images of the dishes by email, the weights of all the different foods were estimated by using as a comparison, a series of standard photos of foods with known weights. The process of estimating the weights of the foods from the digital images was carried out independently from their being weighed and photographed. A comparison between real and estimated weights was carried out using the Student t test and correlation coefficients. Results: In the case of 6 of the 11 food types, there were no statistically significant difference between real and estimated weights and a significant degree of association was found. Significant differences were observed between real and estimated weights for the remaining 5 foods, which were composed of dishes with a greater number of ingredients and greater variation in proportions of each ingredient. Conclusion: Portion size was estimated with sufficient accuracy for foods prepared from simple recipes with few ingredients, but not for foods prepared with several ingredients. More research is needed before recommending this use of digital images in food consumption surveys.

Capacidad saciante y tamaño de porción para comida y snack en universitarios mexicanos / Satiating capacity and portion size for food and snacks in Mexican university

Un snack es una porción pequeña de alimentos consumida entre comidas principales con el fin de obtener energía. Su presencia en la dieta de adultos ha incrementado en la última década. El objetivo del estudio fue determinar el tamaño de porción ingerida y la percepción de la capacidad saciante esperada (CSE) de diferentes alimentos si son ofrecidos como "comida" o "snack". Se diseñó y validó la encuesta para evaluar las elecciones de tamaño de porción ingerida y la CSE de 12 alimentos seleccionados a través del Análisis Descriptivo Cuantitativo (QDA). Participaron 453 estudiantes de 22±4,0 años, los resultados se evaluaron mediante análisis de varianza (ANOVA) con un nivel de confianza del 95%. En la mayoría de los alimentos (83,3%) la CSE fue mayor cuando eran "snack" que en "comida". El tamaño de porción elegido en 5 alimentos fue menor cuando eran "snack" (p<0,05); para el resto de los alimentos no se mostraron diferencias significativas. Respecto al contenido energético ingerido en los dos tiempos de comida, únicamente dos productos, ampliamente reconocidos como snacks, no presentaron diferencias. La densidad energética ingerida de los alimentos estudiados sería mayor si lo consumieran como comida vs snack (p<0,05). Los resultados concuerdan con la evidencia previa sobre los determinantes para consumo de alimentos: los ingredientes del alimento y su complejidad, la saciedad percibida y sus características orosensoriales. Se puede concluir que el contenido energético y nutrimental no fue tomado en cuenta al elegir la cantidad de alimento independientemente de si se ingiriera en "comida" o "snack"(AU)

'Snack' is a small portion of food consumed between main meals to obtain energy. Its presence in the diet of adults has increased in the last decade. The objective of the study was to determine the size of the ingested portion and the perception of the expected satiating capacity (ESC) of different kinds of food if they are offered as 'meals' or 'snacks'. A survey was conducted to evaluate the ingested portion size choices and the ESC of 12 selected foods through QDA methodology. 453 students aged 22±4.0 years participated in the study, results were analyzed with ANOVA (95% as confidence level). In most of the given choices of food (83.3%) the ESC was greater when they were offered as 'snacks' compared to 'meals'. The portion size chosen for five food options was smaller when they were considered 'snack' (p<0.05); for the rest of the food options, no significant differences were shown. Regarding the energy content ingested at the two mealtimes, only two products, widely recognized as snacks, did not present statistical differences. The consumed energy density of the food choices studied was higher when they were chosen to be consumed as meals vs snacks (p<0.05). The results correspond with previous evidence about the determinants for food consumption: ingredients and complexity of the foods, perceived satiety, and its sensorineural characteristics. It can be concluded that energy and nutritional content was not considered when choosing the amount of food regardless of whether it was ingested as a 'meal' or as 'snack'(AU)

Tamaño y porciones del consumo de alimentos de la población: disponibilidad de información actualizada / Size and portions of the population's food consumption: availability of updated information

El objetivo de este estudio fue identificar la producción científica y el comportamiento relacionado al tamaño y porción del consumo de alimentos de la población. Se seleccionó 110 artículos relacionados al tema de la base de datos Scopus, a través, de operadores lógicos, AND entre palabras y OR entre sinónimos. La revista Appetive obtuvo 117 citas. Los artículos publicados corresponden a 64 con autoría de más de tres autores. La mayor producción científica fue en el año 2016 con 37 publicaciones. En todos los artículos revisados no existe información sobre el tamaño y porción en gramos, ni en medida casera adecuada para el consumo. Esta propuesta de revisión permitirá desarrollar futuras investigaciones para precisar el tamaño y porción adecuada según estado fisiológico y grupo etario.

The objective of this study was to identify the scientific production and its behavior related to the size and servings of the population's food consumption. It was selected 110 articles related to the topic from the Scopus database, through logical operators, AND among words and OR among synonyms. The Appetive magazine obtained 117 citations. The published articles correspond to 64 with authorship of more than three authors. The largest scientific production was in 2016 with 37 publications. In all the articles reviewed, there is no information on the size and servings in grams, nor in the home measure suitable for consumption. This revision proposal will allow the development of future research to determine the appropriate size and servings according to physiological status and age group.

Tabla de intercambios de alimentos para uso en pediatría / Food exchange list for pediatric use

Resumen Introducción. Para el profesional en nutrición, las tablas de intercambios de alimentos (TIA) son una herramienta que permite cuantificar la ingesta de calorías y nutrientes y planear la alimentación de manera práctica. Objetivo. Diseñar una TIA para uso en pediatría que facilite la labor del nutricionista en esta población. Materiales y métodos. Estudio descriptivo transversal. La selección de los alimentos consumidos con mayor frecuencia se realizó de acuerdo con recordatorios de 24 horas y una tabla de composición de alimentos (TCA). Se determinaron los tamaños de intercambio de alimentos teniendo en cuenta las porciones del grupo etario. Después del análisis químico de los alimentos se determinaron las medidas caseras (p. ej. cucharada, cucharadita, taza, etc.) y se diseñó y se validó la TIA para uso en pediatría. Resultados. Se incluyeron 241 alimentos, los cuales se distribuyeron en 9 grupos y 4 anexos. Se tuvo en cuenta un nutriente principal para cada grupo y la medida casera se definió según las características de cada alimento. Se observó concordancia en la evaluación de consumo entre las TIA para uso en pediatría y la TCA (CCI>0.81). Conclusión. Se desarrolló una TIA para población pediátrica confiable que permitirá evaluar la alimentación y diseñar planes de alimentación en preescolares y escolares de manera práctica.

Abstract Introduction: Food exchange lists (FEL) are useful tools for nutritionists that allow them to quantify the intake of calories and nutrients and to make feeding plans in a practical way. Objective: To design a FEL to be used in pediatric population in order to ease the nutritionists' work when treating children. Materials and methods: Cross-sectional descriptive study. The most frequently consumed foods were selected based on 24-hour reminders and a food composition database (FCDB). Food exchange sizes were determined taking into account the age group food portion sizes. After the food composition chemical analysis, the portion sizes to be used at home (e.g. spoon, teaspoon, cup, etc.) were determined and the FEL for pediatric use was designed and validated. Results: A total of 241 foods, distributed in 9 groups and 4 annexes, were included. A main nutrient was considered for each group and the portion size to be used at home was defined according to the characteristics of each food. There was consistency between the FEL for pediatric use and the FCDB regarding consumption assessment (ICC>0.81). Conclusion: It was possible to develop a reliable FEL for pediatric use that will allow nutritionists to assess feeding and design feeding plans for preschoolers and schoolchildren in a practical way.

Validação de fotografias de alimentos para estimativa do consumo alimentar / Validation of food's photographs for estimating the consumption food

RESUMO Objetivo Validar fotografias de um guia fotográfico de alimentos para estimativa do consumo alimentar. Métodos As fotografias de 12 alimentos (bolo simples, macarrão ao sugo, mamão formosa, melancia, repolho roxo ralado, quiabo refogado, churrasco em tiras, filé de frango grelhado, pudim de leite condensado, pizza, amendoim cru e queijo tipo minas), retratadas em três tamanhos de porções (pequena, média e grande), foram avaliadas por 90 indivíduos adultos. Foram também investigados o peso, a estatura e o sexo dos participantes. Para análise de concordância entre o tamanho da porção do alimento retratado nas fotos e o tamanho real do alimento, utilizou-se o teste Kappa. Os dados foram analisados no software Stata, considerando-se p <0,05. Resultados A maior prevalência de acerto foi para as preparações pizza (87,8%), churrasco (80,0%), filé de frango e pudim (75,5%). Já os alimentos com menor percentual de acertos foram a melancia (52,2%), o mamão formosa e o bolo (57,8%). A concordância geral entre a percepção do tamanho da porção do alimento e o tamanho real do alimento foi de 0,622 ( p <0,001). A percepção não foi influenciada pelo sexo e pelo estado nutricional dos participantes ( p >0,05). Conclusão As 12 fotografias apresentaram uma boa concordância com as porções dos alimentos e podem ser um instrumento útil para aumentar a acurácia dos relatos do consumo alimentar.

ABSTRACT Objective Validate photographs of a photographic guide of foods to estimate food consumption. Methods The photos of 12 foods (simple cake, pasta to suck, papaya, watermelon, grated purple cabbage, okra stew, barbecue into strips, grilled chicken, condensed milk pudding, pizza, raw peanuts and cheese type mines), pictured in three portion sizes (small, medium and large), were evaluated for 90 adult subjects. The weight, height and gender of the participants also were investigated. For analysis of agreement between the size of the food portion pictured in the photos and the actual size of the food used the Kappa test. Data were analyzed using Stata software, considering p<0.05. Results The highest prevalence was hit for pizza preparations (87.8%), barbecue (80.0%) chicken fillet and pudding (75.5%), while foods with a lower percentage of correct answers were watermelon (52.2%), the papaya and cake (57.8%). The overall agreement between the perception of the size of the food portion and the actual size of the food was 0.622 (p<0.001). The perception was not influenced by sex and nutritional status of participants (p>0,05). Conclusion We conclude that the 12 photographs showed a good agreement with the portions of food and can be a useful instrument to increase the accuracy of dietary intake reports.

Porções de alimentos e número de refeições realizadas por adultos e idosos do muncípio de São Paulo: relação com excesso de peso e perfil lipídico / Food portion sizes and eating frequency of adults and elderly of São Paulo relationship with overweight and lipid profile

As contribuições do tamanho das porções dos alimentos e do número de refeições realizadas por dia para o aumento da prevalência do excesso de peso e para alterações no perfil lipídico em populações consumindo dieta ad libitum ainda não são bem estabelecidas, visto que a literatura apresenta resultados contraditórios. Objetivo: Avaliar a associação entre porções dos alimentos e o número de refeições realizadas com o excesso de peso e o perfil lipídico de adultos e idosos residentes do município de São Paulo. Métodos: Foram utilizados dados do estudo transversal de base populacional ISA - Capital 2008, referentes à amostra probabilística de residentes do município de São Paulo com 20 anos ou mais, de ambos os sexos. As informações, como dados socioeconômicos, antropométricos, de estilo de vida e inquérito alimentar, foram coletadas entre 2008 e 2010 por meio de visitas domiciliares e inquérito telefônico. No primeiro manuscrito da presente dissertação, os 1042 indivíduos foram classificados segundo o Índice de Massa Corporal (IMC) em duas categorias: com e sem excesso de peso. Dados de consumo alimentar foram obtidos por dois recordatórios alimentares de 24 horas (R24h). Os alimentos citados foram classificados em grupos e avaliados. Foi calculada a mediana da porção, percentual de relato e contribuição energética para homens e mulheres com e sem excesso de peso...

The contribution of food portion sizes and eating frequency to the rising prevalence of overweight and to lipid profile changes in populations consuming ad libitum diet is not well established, as contradictory results are presented in literature. Objective: Verify the association between food portion sizes, eating frequency, being overweight and lipid profile in a representative population sample of adults and elderly in São Paulo. Methods: The study considered data from cross-sectional population-based ISA-Capital 2008 with random sample of residents of São Paulo aged above 20 years and both sexes. Socioeconomic, anthropometric, lifestyle and diet information was collected between 2008 and 2010 in personal or phone interviews. In the first article of this dissertation, 1042 individuals were classified according to Body Mass Index (BMI) into two categories: with and without excess body weight. Food consumption data were obtained by two 24-hour food recall (R24h). The reported foods were classified into groups and evaluated. The median portion, reported percentage and energy contribution for men and women with and without EBW were calculated. Logistic Regression models were used to evaluate the association of food portion sizes with being overweight...

Energy Content Estimation by Collegians for Portion Standardized Foods Frequently Consumed in Korea

The purpose of this study is to estimate Korean collegians' knowledge of energy content in the standard portion size of foods frequently consumed in Korea and to investigate the differences in knowledge between gender groups. A total of 600 collegians participated in this study. Participants' knowledge was assessed based on their estimation on the energy content of 30 selected food items with their actual-size photo images. Standard portion size of food was based on 2010 Korean Dietary Reference Intakes, and the percentage of participants who accurately estimated (that is, within 20% of the true value) the energy content of the standard portion size was calculated for each food item. The food for which the most participants provided the accurate estimation was ramyun (instant noodles) (67.7%), followed by cooked rice (57.8%). The proportion of students who overestimated the energy content was highest for vegetables (68.8%) and beverages (68.1%). The proportion of students who underestimated the energy content was highest for grains and starches (42.0%) and fruits (37.1%). Female students were more likely to check energy content of foods that they consumed than male students. From these results, it was concluded that the knowledge on food energy content was poor among collegians, with some gender difference. Therefore, in the future, nutrition education programs should give greater attention to improving knowledge on calorie content and to helping them apply this knowledge in order to develop effective dietary plans.

Recommendation of Serving Size of the Meal Service of Community Child Centers in Korea / 대한지역사회영양학회지

OBJECTIVES: This study was performed to set easily applicable portion sizes by sex and age for children at the Community Child Centers (CCC) in Korea. METHODS: Considering the age and gender specific energy level at Target Patterns for children aged 6-18 years, which were suggested as a part of the 2010 Korean Food Guidance System (KFGS), we set three meal sizes. We reclassified the recommended daily servings of Grains, Meat.fish.eggs.beans and Vegetables group at Target Patterns into three meal sizes, and then calculated the recommended serving per meal. Each proposed amount of food per meal was calculated based on serving size of foods commonly eaten at KFGS, which was then allocated to five meal components; rice, soup, stew, protein and vegetable side-dishes and Kimchi. Each proposed amount of food per meal was applied to 173 menus' recipes from CANpro 3.0 as main ingredient's amounts. We cooked the 173 menus at the medium size and measured their weights after cooking. RESULTS: Each recommended serving per meal was 0.75, 0.9 and 1.2 for Grains; 1.2, 1.6 and 2.4 for Meat.fish.eggs.beans; 2, 2.4 and 2.8 for Vegetables by meal sizes. Among five meal components, the ratio of small and large to medium size was 1/5 less and 1/3 more for rice and 1/3 less and 1/3 more for soup.stew, protein side-dish and Kimchi, respectively. We suggested the same amount for a vegetable side-dish to encourage vegetable intake. Proper portion sizes per meal of medium were rice 190 g, soup.stew 210 g (solid ingredients 60 g), protein side-dish 100 g (meat.eggs.beans) and 70 g (fish), vegetable side-dish 80g and Kimchi 30 g. CONCLUSIONS: Proper portion size per meal suggested in this study may be useful at the CCC where dietitians are not available and the approach could be applicable to the other types of meal services.

Portion sizes of foods frequently consumed by the Korean elderly: Data from KNHANES IV-2

The purpose of this study was to define a one-portion size of food frequently consumed by the Koreans aged 65 years or over. From the original 8,631 people who took part in the Forth Korea National Health and Nutrition Examination Survey (KNHANES IV-2) 2008, we analyzed the data on 1,458 persons (16.9%) aged 65 and over, and selected food items consumed based on the intake frequency of 30 or more by all participant. A total of 158 varieties of food items were selected. The portion size of food items was set on the basis of the median amount (50 percentile) in a single intake by a single person. In the cereals category, 13 items were selected, of which the most frequently consumed item was well-polished rice with portion size of 75 g. Among legumes, 7 items were selected, of which the most frequent item was dried black soybean with a portion size of 6 g. Among the 16 groups, the most varied food group (49 items) was vegetables, and among these the most frequently occurring item was garlic (5 g), while among the fruit group, only 11 items were selected, as their intake frequency was low. Fish and shellfish were more frequently consumed by the elderly than meats. The most frequently consumed meat was pork loin, with a portion size of 30 g. In fish and shellfish, the most frequently consumed item was dried and boiled large anchovy with a portion size of 2 g. Portion sizes for food items consumed regularly by the elderly may be conveniently and effectively used in dietary planning and in nutritional education programs, and in assessing the diet intake status of the elderly.

Identificação de porções alimentares em fotografias / Identifi cation of food portions in photographs

Different techniques for acquisition of precise data on food ingestion have been applied in consumption research, photographs of food portions included. The aim of this research was to investigate the capacity of individuals to estimate, from direct observation, the size of the food portions photographed, comparing them to the reference portions (real food). It is across-sectional, methodological study on a sample composed of 120 college students from the city of Brasilia-DF, Brazil. The food and the reference portions resulted from the application of a 24-hour recall and Eating Frequency Questionnaire. The research conditions were controlled. There was no consumption of the portions and no nutritional inquiry method associated to the study. The work was based uniquely on the perception of the interviewees. Thirty-one foods, in 3 portion sizes each, were photographed. The estimations were made considering gender, BMI, age and level of education. A total of 3,720 photographs were analyzed, 2,635 answerers out of that (67.42%), associated the reference portion to the photograph showed. Pumpkin and spaghetti were erestimated in 73% and 79% of the analyses, respectively, while the powdered milk chocolate was underestimated in 88% of the analyses. There were no statistical differences between the variables tested. The small percentage of disagreement between the real portions and the photographed ones indicates that the college students did not have difficulty when associating real food to photographs. However, it is suggested that other esearches be conducted in order to associate dietary inquiries to the photographic material in a heterogenic featured sample, in order to judge the memory abilities of the interviewees.

Diferentes técnicas para la obtención de registros exactos de la ingesta de alimentos han sido aplicadas en investigaciones sobre consumo, entre ellas, la fotografía de porciones alimentares. El objetivo de este estudio fue determinar la capacidad de los individuos para estimar, mediante la observación directa, el tamaño de las porciones alimenticias retratadas en foto, en comparación con las porciones de referencia(alimentos reales). Se trata de un estudio transversal de una muestra compuesta por 120 estudiantes universitarios de la ciudad de Brasilia-DF. La base para los alimentos y porciones de referencia fue el levantamiento del consumo alimentar mediante recordatorio 24 horas y cuestionario de frecuencia alimentar. Las condiciones de la investigación fueron controladas, no hubo consumo de alimentos y no se asoció al estudio ningún método de encuesta alimentar. Se retrataron 31 alimentos, cada uno en 3 porciones diferentes. Las estimativas fueran evaluadas en función del sexo, IMC y curso de graduación. Fueron realizadas 3720 comparaciones de fotos con las porciones de referencia, de estas, 2635 indicaron la foto correspondiente a la porción real, o sea, el índice de aciertos fue de 67,42%. Calabaza y espagueti fueron sobrestimados en 73% y 79%respectivamente, mientras que el chocolate fue subestimado en 88% de las pruebas. No había diferencia estadística significativa entre las variables de la prueba. La baja tasa de discordancia entre las porciones reales y las fotografías indican que los estudiantes no encontraron difi cultades de percepción para asociar los alimentos reales con sus fotografías. Sin embargo, se recomienda la realización de otros estudios en que se relacionen las encuestas alimentarias al material fotográfico en una muestra con características diversas, a fin de juzgar la habilidad para asociar la fotografía al alimento real utilizando la memoria.

Diferentes técnicas para aquisição de registros precisos da ingestão alimentar têm sido aplicadas em pesquisas de consumo, dentre elas, a fotografia de porções alimentares. O objetivo desse estudo foi investigar a capacidade de indivíduos em estimar através de observação direta, o tamanho das porções alimentares fotografadas, comparando-as às porções de referência (alimentos reais). Trata-se de estudo transversal, metodológico, em amostra composta por 120 universitários na cidade de Brasília-DF. Os alimentos e as porções de referência resultam da aplicação de recordatório 24 horas e Questionário de Frequência Alimentar. As condições da pesquisa foram controladas, não houve consumo dos alimentos e não foi associado ao estudo nenhum método de inquérito alimentar, trabalhou-se somente a percepção dos entrevistados. Fotografou-se 31 alimentos, cada um em três porções diferentes. As estimativas foram julgadas em função do sexo, IMC, idade e curso superior. Realizou-se 3.720 análises das fotografias, 2635 respondentes (67,42%)associaram à fotografia apresentada ao alimento real. Abóbora e espaguete foram superestimado sem 73% e 79%, respectivamente, enquanto o achocolatado foi subestimado em 88% das análises. Não houve diferenças estatísticas entre as variáveis testadas. Os pequenos índices de desacordo entre as porções reais e as fotografias indicam que os universitários não encontraram dificuldades de percepção ao associar alimentos reais com as fotografias. Entretanto, sugere-se, que outros estudos sejam conduzidos associando-se métodos de inquéritos dietéticos ao material fotográfico em amostra com características heterogêneas, a fim de julgaras habilidades de associar as fotografias aos alimentos reais com emprego da memória.

Comparison of Frequency and Amount of Dishes Reported in Semi-Quantitative Dish-based Frequency Questionnaire vs. 12-day Dietary Records

A valid food or dish frequency questionnaire needs to be developed in Korea for accurate dietary assessment because the dietary practices of Koreans are very different from those of other countries. This study was conducted to evaluate the accuracy of the newly developed, semi-quantitative, dish-based frequency questionnaire (Semi-DFQ) with 12-day dietary records (12-DRs) as a gold standard. The study subjects were 115 men and 173 women aged 30-65 years old. We calibrated the frequency, portion size and daily intake of 112 dish items reported in Semi-DFQ with those in 12-DRs by Spearman rank correlation coefficients (SCCs). The consumption frequency and portion size reported in Semi-DFQ were higher than those in 12-DRs. The SCCs for the consumption frequency of various dishes ranged from -0.07 (fried seaweed) to 0.70 (instant coffee), the portion size ranged from -0.09 (cold seaweed soup) to 0.68 (soju), and the daily intake ranged from -0.07 (fried seaweed) to 0.71 (soju). The SCCs were higher for dishes consumed daily, such as steamed rice, milk, coffee and alcohol, than those of foods eaten rarely. The overall agreements between the Semi-DFQ and 12-DRs were low for categories of consumption frequency and portion size, even though some dishes showed high SCCs. The SCCs of the two methods in consumption frequency and amount were higher among the women and younger subject. The results revealed the limitation of the Semi-DFQ for evaluating the status of usual individual intake. Therefore, the Semi-DFQ can be used in addition as dietary records and 24-hour recall depending on the research aims.

One portion size of foods frequently consumed by Korean adults

This study aimed to define a one portion size of food items frequently consumed for convenient use by Koreans in food selection, diet planning, and nutritional evaluation. We analyzed using the original data on 5,436 persons (60.87%) aged 20 ~ 64 years among 8,930 persons to whom NHANES 2005 and selected food items consumed by the intake frequency of 30 or higher among the 500 most frequently consumed food items. A total of 374 varieties of food items of regular use were selected. And the portion size of food items was set on the basis of the median (50th percentile) of the portion size for a single intake by a single person was analyzed. In cereals, the portion size of well polished rice was 80 g. In meats, the portion size of Korean beef cattle was 25 g. Among vegetable items, the portion size of Baechukimchi was 40 g. The portion size of the food items of regular use set in this study will be conveniently and effectively used by general consumers in selecting food items for a nutritionally balanced diet. In addition, these will be used as the basic data in setting the serving size in meal planning.

Establishment of One Portion Size of Foods Frequently Consumed by Korean Children Aged 6-11 Using 2005 Korea National Health and Nutrition Examination Survey and Its Comparison with Adults / 대한지역사회영양학회지

The purpose of this study was to define a one portion size of food frequently consumed by Korean children aged 6-11 for convenient use in food selection, diet planning, nutritional evaluation, and nutrition education. We analyzed using the original data on 889 persons (9.96%) aged 6-11 years among 8,930 persons to whom NHANES 2005 and selected food items consumed by the intake frequency of 10 or higher among the 500 most frequently consumed food items. A total of 172 varieties of food items of regular use were selected. Also the portion size of food items was set on the basis of the median (50 percentile) of the portion size for a single intake by a single person was analyzed. The portion size of cereals was 5 g for prosomillet to 120 g for hamburger. As for vegetables, it posted 1 g for red pepper to 50 g for nabakkimchi. The portion size of meats and products was 15 g for luncheon meat to 120 g for beef feet soup. In comparison of children's portion size with adults', the children's portion sizes of every food groups, with the exception of meats and eggs, were lower than those of adults. The portion size of the regular food items of children in this study will be conveniently and effectively used by children, children's diet planners and researchers in selecting food items for a nutritionally balanced diet and in assessing the children's diet intake.

The Effect of the Reduced Portion Size by Using a Diet Rice Bowl on Food Consumption and Satiety Rate / 대한지역사회영양학회지

Using the diet rice bowl, this study examined whether visual cues related to portion size can influence intake volume without altering satiation. 24 subjects ate lunch and subsequent dinner meal in the lab once a week for 2 weeks. Each week at noon , they were served one of two different sizes of a rice (150 g of rice by the diet rice bowl and 210 g of rice by the general rice bowl) but recognized the same volume of which they could eat as much as they wanted of side dishes. Subjects returned to the lab five hours later for a standard dinner, which was consumed ad libitum. Results showed that the subjects who were eating from the diet rice bowl ate less rice (222.4 Kcal vs 306.5 Kcal, p < 0.001) and total energy intake (412.5 Kcal vs 499.2 Kcal, p < 0.001) than those eating from a general rice bowl at lunch. However, despite consuming 21% less energy intake at lunch, the rates of satiety were not significantly different after eating from the diet rice bowl and from the general diet bowl. And there were no significant difference in rice intake and energy intake at dinner between the diet rice bowl and the general rice bowl. These results suggest decreasing the portion size by the diet rice bowl with biased visual cues leads to decreased rice intake and energy intake without altering the satiation. This is, the decreased amount of rice in a diet rice bowl may implicitly suggest what might be construed as an appropriate amount to consume and eventually it suggests smaller consumption norms.

A Study on the Meal Portion Size of Kindergarten

This study was performed to weigh the average meal portion sizes served for preschoolers by kindergarten teacher. The subjects were 53 teachers from 8 kindergartens, which are random sampled by meal service number. Using the weighing method assessed the meal portion sizes of food items at lunch. The data was complied by performing chi-square-test using SPSS WIN 11.0. The result was as followed: 98.0% of teacher agreed with the meal service because of 'better food habit and table etiquette' ( 68.0%) , 'health promotion with balanced diet' ( 22.0%) , 'owing to extending school time' ( 6.0%) and 'demand of parents' ( 2.0%) . Preschooler eat lunch at class ( 84.9%) and meal serving size was decided by teacher ( 79.2%) . Teachers thought that they know very well about portion size 3.8%, 96.2% of teacher thought that they don't know much about portion size. Portion size were not significantly different by food tray types but there was much different ( almost 100%) compared with minimum and maximum within dishes. Most average portion size was not met dietary reference intake except cooked rice, soups and fish cutlet. Working experience effected on portion size. More served, more working experienced of teacher. For example Bulgogi was served 26.8 g by teacher who has over 6 years working experience compared with 2 - 6 years ( 20.4 g) and less than 2 years ( 17.1 g)(p < 0.01) . Spinach portion size was significantly different by teacher's working experience ( p < 0.01) . Portion size were not significantly different by preschooler's age. The reference of dietary for preschooler was different by age, but teachers served meal by their exper-ience. According to the results of this study, it is necessary to educate meal portion size for kindergarten teacher who take charge in meal serving. To provide guidance to teacher about reasonable portion sizes for preschoolers, teacher need to take nutrition education about meal service and child nutrition in college. This study would be useful to those who plan meals for preschoolers and to researchers studying dietary intakes of preschooler.

A Study on Kindergarten's Meal Service Program and Children's Food Intake

Today, the role of kindergarten is more important as nutrition provider through snack and meal services. Desirable kinds and amounts of food items at school lunch menu were important factors of nutrients intakes in children. This study was performed to assess the kindergarten's meal service program (snack and lunch) and the consumption amount of lunch according to each dishes. Twenty four institutions that cared over one hundred children were observed at Seoul and Kyunggido area. Well-trained observers checked meal and snack serving activity and foodservice facilities by formal checklist. And using the weighing method assessed the consumption levels of food items at lunch. During 3 days, 30 children in each kindergarten were selected randomly according to age, observers measured serving and residual weight of each food. The data was compiles by performing ANOVA-test using SPSS WIN 10.0. The result were as follows: 1) Foodservice facilities in kindergarten was limited to provide qualified foodservice. 91.7% of institution had kitchen, 41.7% had dinning. The kitchen equipment possession rate was 12.5% (oven), 30.8% (heating cabinet), 58.3% (refrigerator). The rate of using document about foodservice was used 83.3% (menu list), 41.7% (daily foodservice record), 25% (standard recipe). 41.7% of institution employed licensed dietitian. Only 41.7% of subjects preserved meal after daily meal service. 2) Meal serving size was decided by teacher, 54.5% at snack and 43% at lunch and pre-divided individual portion type was 36.4% at snack and 28.6% at lunch. The rate of cleaning activity before meal was 72.2% at snack, 90.5% at lunch. And nutrition or sanitation education activity was more performed at lunch time, for examples brushing teeth activity was 12.5% at snack 85.7% at lunch. 3) The consumption amounts of plain cooked rice was 112.7 +/- 26.1 g, cooked rice and cereal was 93.06 +/- 27.97 g, curry rice was 208.35 +/- 64.84 g and the consumption amounts of these main dishes was significantly different by age (p < 0.001). The consumption amounts of soup was very different according to children's preference. The consumption amounts of seaweed soup was 120.18 +/- 82.13 g, wild sesame and bean-paste soup was 40.64 +/- 23.16 g. The consumption range of kimchis was from 6 g to 13 g, jorim (braised food) was from 3 g to 25 g, fried food (include stir fried, deep fat fried, pan fried) was from 14.5 g to 22 g, vegetable dish was from 3 g to 16 g. These consumption amount of each dishes was not reached recommended portion size of nutritionally planning menu by nutritionist.

Validity of Self-administered Semiquantitative Food Frequency Questionnaire by Conditions of One Portion Size / 대한지역사회영양학회지

This study was designed to estimate the improvement of Validity for food frequency questionnaire(FFQ) by offering multiple choice portion size in developing a questionnaire. Validity of the two methods(food frequency questionnaire I=FFQ I & Food frequency questionnaire II=FFQ II) was tested in comparison with reference method of the 7-day weighed record(7DWR). Dietary consumption data of the thred methods(FFQ I, FFQ II & 7DWR) were colleced from 101 female university students for the analysis. Validity was measured in two categories : One was the nutrient intake value from the three methods, the other was the identification of between individual variation within the group. Spearman's rank order correlation test and distributio graphs were used for the analysis. The result showed that individual intake value of the FFQ II was closer to that of the 7DWR than that of the FFQ I.Spearman's rank order correlation between the FFQ II and the 7DWR did not show any improved correlation. The distribution graphs of nutrient intake derived from both the FFQ I and the FFQ II were different from that of the 7DWR. Therefore, it could be sugested that single one protion size food frequency questionnaire is an equally efficient method as a multiple choice food frequency questionnaire to be adopted in epidemiologic studies.

A Study of the Dietary Intake Status and One Portion Size of Commonly Consumed Food and Dishes in Korean Elderly Women / 대한지역사회영양학회지

The use of semiquantitative food frequency to estimate dietary intake has become widespread in nutritional epidemiologic studies. It had been suggested that knowledge about a person's usual portion size of each meal in addition to consumption frequency will improve the accuracy of this method. This study was performed to investigate the dietary intake status(nutrient, food, and dish intake) and one portion size of commonly consumed food and dishes to develop a semiquantitative food frequency questionnaire that will be used to expore the relationship between the incidence of cardiovascular disease and diet in Korean women after menopause. Intake of food or dish in 123 elderly women were measured by 3-day food records in March to May, 1996. The results obtained in this study were summarized as follow : 1) Calcium, vitamin A, and vitamin E intakes were less adequate than Recommended dietary allowances(RDA). 2) The subjects who consumed more than 20% of the energy from fat were 35% and the subjects consumed dietary cholesterol more than 300mg were 18%. 3) The most frequently consumed foods or dishes by the subjects were Korean cabbage kimchi