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Find video protocols related to scientific articles indexed in Pubmed.
Dietary intake of Brazilian adolescents.
Public Health Nutr
PUBLISHED: 08-05-2014
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To analyse the dietary intake of Brazilian adolescents and investigate its association with sociodemographic factors as well as health-risk and health-protective behaviours.
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[Relative validity of dietary indicators from the Brazilian National School-Based Health Survey among adolescents in Rio de Janeiro, Brazil].
Cad Saude Publica
PUBLISHED: 06-18-2014
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This study evaluated the relative validity of the dietary indicators from the questionnaire used in the Brazilian National School-Based Health Survey (PeNSE) in the city of Rio de Janeiro, Brazil. The sample included 174 students. The following indicators were evaluated: regular consumption (? 5 times a week) of markers for healthy eating, markers for unhealthy eating, and routine eating habits (having meals with parents or guardians (MEAL), having breakfast (breakfast), and eating while studying or watching TV. The results of the questionnaire were compared with three 24-hour recalls. For all the markers of healthy eating, there was no difference in the proportion of regular consumption when comparing the two methods. The rates detected by the questionnaire were higher for packaged snacks and crackers and lower for cold cuts and MEAL. The indicators for regular consumption of markers for healthy eating and that referring to BREAKFAST were those with the highest accuracy. The dietary indicators used by the PeNSE survey showed satisfactory validity.
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Dietary sources of fiber intake in Brazil.
Appetite
PUBLISHED: 04-15-2014
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The objective of this study was to estimate the household availability of fibers in Brazil and to identify the dietary sources of this nutrient. Data from the 2008-2009 Household Budget Survey were used to estimate national household availability and density of fibers and also according to stratifications defined by income level, five regions and area (rural or urban). The contribution of the different food groups, classified by the nature, extent and purpose of processing, to total fibers available in Brazilian households was also determined. The mean density of per capita fibers was 7.6 g/1000 kcal. Higher availability and density of fibers was observed in households situated in rural areas and among low-income families. The main dietary sources of fiber were beans, bread, rice, fruit, vegetables and manioc flour. Fiber intake was found to be insufficient. Therefore, actions promoting a healthy diet are needed to improve the dietary quality of the Brazilian population.
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The influence of lifestyle and gender on sickness absence in Brazilian workers.
BMC Public Health
PUBLISHED: 04-02-2014
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Despite an increasing body of knowledge concerning gender and lifestyle factors as determinants of sickness absence in well-developed countries, the relationship between these variables has not been elucidated in emerging economic power countries, where the burden of non-communicable diseases is particularly high. This study aimed to analyze the relationships among lifestyle-related factors and sick leave and to examine whether gender differences in sickness absence can be explained by differences in socio-demographic, work and lifestyle-related factors among Brazilian workers.
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Processed and ultra-processed food products: consumption trends in Canada from 1938 to 2011.
Can J Diet Pract Res
PUBLISHED: 03-11-2014
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A classification of foods based on the nature, extent, and purpose of industrial food processing was used to assess changes in household food expenditures and dietary energy availability between 1938 and 2011 in Canada.
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Sociodemographic and behavioral factors associated with physical activity in Brazilian adolescents.
BMC Public Health
PUBLISHED: 01-24-2014
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Physical activity in adolescents is associated with short- and long-term health benefits. Physical activity can occur in various domains and is influenced by a complex network of factors. The aims of this study are 1) to describe the physical activity of Brazilian adolescents in physical education classes, during leisure time, and during active commuting and 2) to investigate the socio-demographic and behavioral factors associated with physical activity.
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Trends in spending on eating away from home in Brazil, 2002-2003 to 2008-2009.
Cad Saude Publica
PUBLISHED: 01-08-2014
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The study aims to describe trends in food consumption away from home in Brazil from 2002-2003 to 2008-2009 and to analyze the influence of income on this behavior. The authors used data collected by the Household Budget Surveys conducted by the Brazilian Institute of Geography and Statistics (IBGE) in 2002-2003 and 2008-2009. The information analyzed in this study involves records of food and beverage purchases for consumption away from home. Trends in eating away from home were estimated for the total population and according to demographic and economic strata. The association between the share of food consumed away from home and income was studied using regression models to estimate income elasticity coefficients. The share of eating away from home increased 25% during the period, reaching 28% of total spending on food. Each 10% increase in mean per capita income leads to a 3.5% increase in the share of food consumed away from home. This suggests that income growth will result in future increases in the share of eating away from home.
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[Validity of indicators on physical activity and sedentary behavior from the Brazilian National School-Based Health Survey among adolescents in Rio de Janeiro, Brazil].
Cad Saude Publica
PUBLISHED: 01-07-2014
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This study evaluated the relative validity of physical activity indicators from the questionnaire used in the Brazilian National School-Based Health Survey (PeNSE) in the city of Rio de Janeiro, Brazil, based on a sample of 174 students. The following indicators of weekly physical activity were evaluated: ACTIVE-300MIN (? 300 minutes/week); ACTIVE-150MIN (? 150 minutes), INACTIVE (no physical activity). Additionally, indicators of sedentary behavior were also assessed, as daily screen time (TV, videogames, and computer). The results from the questionnaire were compared with three 24-hour recalls. The results of ACTIVE-300MIN, ACTIVE-150MIN, and INACTIVE generated by PeNSE showed high accuracy. These indicators performed better than those of sedentary behavior in relation to frequency estimates as well as sensitivity, specificity, and correct classification rate. The indicators of physical activity from PeNSE showed satisfactory relative validity.
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Ultra-processed food products and obesity in Brazilian households (2008-2009).
PLoS ONE
PUBLISHED: 01-01-2014
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Production and consumption of industrially processed food and drink products have risen in parallel with the global increase in overweight and obesity and related chronic non-communicable diseases. The objective of this study was to analyze the relationship between household availability of processed and ultra-processed products and the prevalence of excess weight (overweight plus obesity) and obesity in Brazil.
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[Estimated sodium intake for the Brazilian population, 2008-2009].
Rev Saude Publica
PUBLISHED: 12-19-2013
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To update estimates of sodium intake in Brazil.
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International differences in cost and consumption of ready-to-consume food and drink products: United Kingdom and Brazil, 2008-2009.
Glob Public Health
PUBLISHED: 06-04-2013
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This paper tests the hypothesis that one important factor determining household availability of ready-to-consume products is their cost relative to the rest of the diet. National food expenditure surveys in the UK (2008) and Brazil (2008-09) were used. Purchased food quantities were converted into dietary energy (calories) and classified into three groups: (1) foods that are unprocessed or minimally processed; (2) processed culinary ingredients; and (3) ready-to-consume products, either processed or ultra-processed. The contribution of these groups to diets in each country was calculated as a percentage of total energy. Relative cost of ready-to-consume products in each country was calculated by dividing their cost by the cost of the rest of the diet (foods plus culinary ingredients). Linear regression analysis was used to test the association between the UK to Brazil ratios of the caloric share of different ready-to-consume products, and of the relative cost of these products. The caloric share of ready-to-consume products in the UK (63.4%) was well over double that of Brazil (27.7%), whereas their cost relative to the rest of the diet was 43% lower. The lower the relative cost of ready-to-consume products in the UK (compared with Brazil), the higher their relative consumption (R(2)=0.38, p<0.01).
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Increased contribution of ultra-processed food products in the Brazilian diet (1987-2009).
Rev Saude Publica
PUBLISHED: 05-29-2013
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OBJECTIVE To establish temporal trends in household food and drink consumption in Brazil, taking into account the extent and purpose of its industrial processing. METHODS Data was obtained from Household Budget Surveys conducted in Brazil in 1987-1988, 1995-1996, 2002-2003 and 2008-2009. In all surveys, probabilistic samples of households in the metropolitan areas were studied and, for the last two surveys, the scope was national. The units of analysis were food purchases records of clusters of households. The purchased food items were divided according to the extent and purpose of their industrial processing into: in natura or minimally processed foods, processed culinary ingredients and ready-to-consume, processed and ultra-processed food and drink products. The quantity of each item was converted into energy. For each survey, the daily availability of calories per capita and the caloric share of the food groups were estimated. For the national surveys, estimates were calculated by income quintiles. Temporal trends were assessed using linear regression models and difference of means tests. RESULTS The caloric share of ready-to-consume products significantly increased between 2002-2003 and 2008-2009 (from 23.0% to 27.8% of total calories), mainly because of the increase in the consumption of ultra-processed products (20.8% to 25.4%). In the same period, there was a significant reduction in the caloric share of foods and culinary ingredients. The increase in the ultra-processed products caloric share occurred across all income quintiles. There was an uniform increase in the caloric share of ready-to-consume products in the metropolitan areas, mostly in place of ultra-processed products, accompanied by a decrease in the share of in natura or minimally processed foods and culinary ingredients. CONCLUSIONS The share of ultra-processed products significantly increased in the Brazilian diet, as seen in the metropolitan areas since the 1980s, and confirmed at a national level in the 2000s.
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Regional and socioeconomic distribution of household food availability in Brazil, in 2008-2009.
Rev Saude Publica
PUBLISHED: 01-20-2011
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To describe the regional and socioeconomic distribution of household food availability in Brazil.
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Increasing consumption of ultra-processed foods and likely impact on human health: evidence from Brazil.
Public Health Nutr
PUBLISHED: 01-08-2011
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To assess time trends in the contribution of processed foods to food purchases made by Brazilian households and to explore the potential impact on the overall quality of the diet.
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[Body image, nutritional status and practices for weight control among Brazilian adolescents].
Cien Saude Colet
PUBLISHED: 06-08-2010
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The objective of this work is to describe the agreement between body image (BI) and nutritional status (NS) as well as to verify the association of BI and NS with behaviors regarding body weight (BRBW) among Brazilian adolescents. In 2009, a random sample of students in 9th year at public and private schools from 26 Brazilian state capitals and Federal District was studied. It was used a self-administered questionnaire with information about BI, BRBW and socioeconomic factors. Weight and height were measured. Logistic regression analyses were performed to evaluate associations between variables and weighted kappa test was used to verify the agreement between NS and BI. Twenty-four percent of the adolescents had excessive weight (EW) and 17.7% considered themselves fat. Almost 2/3 performed some action to weight control and 7% showed extreme behavior for weight control (EBWC). Low agreement between the NS and BI was observed. Nearly half and 27% of those with EW considered themselves as having normal weight and being thin, respectively. Greater proportion of EW adolescents had EBWC when compared with those with normal weight and underweight. The same was observed in relation to BI. Low agreement between EN and BI was observed. Practices for weight control were observed even among individuals with adequate NS.
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[Food consumption and eating behavior among Brazilian adolescents: National Adolescent School-based Health Survey (PeNSE), 2009].
Cien Saude Colet
PUBLISHED: 06-08-2010
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The objective of this article is to describe the characteristics of food consumption and eating behavior of adolescents and its association with socio-demographic factors. In 2009, a random sample of students in 9th grade of elementary education at public and private schools from 26 Brazilian state capitals and Federal District was studied. It was applied a self-administered questionnaire with socio-demographic attributes, food consumption and eating behavior, among others. Estimates of the constructed indicators were presented for the total population and by sex. The association of each indicator with socio-demographic variables was examined by logistic regression. The results showed that over half of adolescents presented frequent consumption of beans (62.6%), milk (53.6%) and sweets (50.9%), and held at least lunch or dinner with the mother or responsible (62.6%) and watching television or studying (50.9%). In general, girls were more exposed to undesirable eating habits and higher socioeconomic status was associated with a higher prevalence of the indicators studied. The results revealed regular consumption of unhealthy diet markers and consumption of less than the recommended for a healthy diet, pointing the need for strengthening health promotion activities targeting young people.
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A new classification of foods based on the extent and purpose of their processing.
Cad Saude Publica
PUBLISHED: 02-24-2010
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This paper describes a new food classification which assigns foodstuffs according to the extent and purpose of the industrial processing applied to them. Three main groups are defined: unprocessed or minimally processed foods (group 1), processed culinary and food industry ingredients (group 2), and ultra-processed food products (group 3). The use of this classification is illustrated by applying it to data collected in the Brazilian Household Budget Survey which was conducted in 2002/2003 through a probabilistic sample of 48,470 Brazilian households. The average daily food availability was 1,792 kcal/person being 42.5% from group 1 (mostly rice and beans and meat and milk), 37.5% from group 2 (mostly vegetable oils, sugar, and flours), and 20% from group 3 (mostly breads, biscuits, sweets, soft drinks, and sausages). The share of group 3 foods increased with income, and represented almost one third of all calories in higher income households. The impact of the replacement of group 1 foods and group 2 ingredients by group 3 products on the overall quality of the diet, eating patterns and health is discussed.
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[Sugar and overall macronutrient profile in the Brazilian family diet (2002-2003)].
Cad Saude Publica
PUBLISHED: 02-05-2010
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This study evaluated the impact of calories from sugar on the calorie share of other macronutrients in the Brazilian family diet. The studys estimates are based on data from the Household Budget Survey conducted by the Brazilian Institute of Geography and Statistics from July 2002 to June 2003. Multiple linear regression models were used to study the impact of sugar calories on each of the macronutrients in household food acquisition, controlling for total energy content in food acquisition and socio-demographic variables. Each calorie from sugar purchases increases the share of calories from fat by 0.3 calories and decreases the share of calories from protein by 0.7 calories. Each calorie of sugar from processed foods increases the share from fat by 1.6 calories and the share from saturated fatty acids by 0.4 calories and decreases the share from non-sugar carbohydrates by 0.8 calories. The findings shed further light on the harmful role of sugar for human health.
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Per capita versus adult-equivalent estimates of calorie availability in household budget surveys.
Cad Saude Publica
PUBLISHED: 02-02-2010
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This study aims to estimate an adult-equivalent scale for calorie requirements and to determine the differences between adult-equivalent and per capita measurements of calorie availability in the Brazilian population. The study used data from the 2002-2003 Brazilian Household Budget Survey. The calorie requirement for a reference adult individual was based on the mean requirements for adult males and females (2,550kcal/day). The conversion factors were defined as the ratios between the calorie requirements for each age group and gender and that of the reference adult. The adult-equivalent calorie availability levels were higher than the per capita levels, with the largest differences in rural and low-income households. Differences in household calorie availability varied from 22kcal/day (households with adults and an adolescent) to 428kcal/day (households with elderly individuals), thus showing that per capital measurements can underestimate the real calorie availability, since they overlook differences in household composition.
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Sugar and total energy content of household food purchases in Brazil.
Public Health Nutr
PUBLISHED: 04-30-2009
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To study the role of energy derived from sugar (both table sugar and sugar added to processed foods) in the total energy content of food purchases in Brazil.
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[Influence of income on food expenditures away from home among Brazilian families, 2002-2003].
Cad Saude Publica
PUBLISHED: 04-23-2009
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This study describes and evaluates the influence of income on the percentage of food expenditures away from home for Brazilian families. Food acquisition data from the National Household Budget Survey conducted from 2002 to 2003 (POF 2002/2003) by the Brazilian Institute of Geography and Statistics (IBGE) or National Census Bureau was used in the analysis. Information on food-and-drink expenditures away from home was analyzed. The influence of income on the share of food purchased away from home in the household budget, adjusted for socio-demographic variables, was analyzed through elasticity coefficients estimated in multiple linear regression. Food purchased away from home accounted for 21% of total food expenditures by Brazilian households. A 10% increase in income increased the share of food purchased away from home by 3%. Income elasticity was high, especially for the lowest income families. The results demonstrate an important influence of income on food expenditures away from home, and higher income is associated with a greater share of food purchased away from home.
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[Estimated sodium intake by the Brazilian population, 2002-2003].
Rev Saude Publica
PUBLISHED: 02-13-2009
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To estimate the magnitude and distribution of sodium intake in Brazil and to identify major dietary sources contributing to this intake.
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Consumption of ultra-processed foods and likely impact on human health. Evidence from Canada.
Public Health Nutr
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To investigate consumption of ultra-processed products in Canada and to assess their association with dietary quality.
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Availability of added sugars in Brazil: distribution, food sources and time trends.
Rev Bras Epidemiol
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To describe the regional and socio-economic distribution of consumption of added sugar in Brazil in 2002/03, particularly products, sources of sugar and trends in the past 15 years.
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