The EHU12/24 cohort: survey design, instruments and participants.

The EHU12/24 (code of a survey from the University of the Basque Country/Euskal Herriko Unibertsitatea, UPV/EHU) study was designed to investigate the risk factors of overweight/obesity-related lifestyles, particularly those associated with diet, their psychosocial influences and the interactions among these factors. This observational cohort study was carried out according to a standardised protocol and involved a representative sample of the UPV/EHU student population. Anthropometric measurements, direct behavioural determinants, such as physical activity and diet, and indirect determinants, such as social/psychological factors, are considered. In this paper, we present the survey design, instruments, measurements and related quality management. We describe the study sample in terms of its socio-economic and demographic factors and knowledge area and summarise the methodology used to collect the data and obtain the anthropometric measurements. The participants were 603 students (59·5 % female) aged 18-28 years. The crude participation proportion was 53·5 %. Regarding the knowledge area, the lowest response proportions were obtained from the Health Sciences (38·6 %) compared with the Non-Health Sciences (48·3 %) (P = 0·003). The mean age was 20·9 years, and 83·1 % of the sample were from Basque Country. Regarding the socio-economic characteristics, there were significant differences by sex and knowledge area in most studied variables. Moreover, the Health Sciences students were more likely younger, from outside Basque Country, to have parents with university degrees and to have a higher social status. In conclusion, the EHU12/24 cohort provides valuable data for analysing the complexity and multidimensionality of obesity in university students.

Overweight and obesity: prediction by silhouettes in young adults.

The present study analyzes the prevalence of overweight/obesity in a sample of young adults from the University of the Basque Country (Spain), and tests the efficiency of the silhouettes to predict overweight/obesity. This cross-sectional study was conducted in a sample of volunteer university students from the University of the Basque Country (356 men and 745 women, age: 18-33 years), who came to the Physical Anthropology laboratory where a standardized questionnaire was administered and anthropometric measurements were taken by a well-trained anthropometrist. Height and weight were obtained. BMI was calculated as weight/height(2) (kg/m(2)) and it was used as a reference method. Using a questionnaire, based on the standard figural stimuli, subjects were asked to choose the silhouette which was closest to his/her usual appearance (current body size). The accuracy of the Williamson et al.'s silhouettes as an overweight-obesity indicator was analyzed by gender-specific receiver operating curve (ROC). The cutoff figure to distinguish between nonoverweight and overweight-obese individuals corresponded to number 7 in men and 6 in women. These cutoff values matched optimal sensitivity and specificity, with few nonoverweight subjects selecting silhouettes bigger than 7 in the case of men or 6 for women. In conclusion, the figural stimuli allows the identification of populations at overweight/obesity risk with the simple use of silhouettes, at least in this rank of age, where the overweight and obesity are yet little frequent.

Iron, folate and vitamins B12 & C dietary intake of an elderly institutionalized population in León, Spain.

Aging is associated with increased risk of developing anaemia and micronutrient deficiencies. The purpose of this study was to evaluate the daily intake of micronutrient whose deficient in diet could cause anaemia (iron, folic acid, vitamin B12) and vitamin C to establish the prevalence of anaemia in a group of institutionalized of 124 elderly subjects residing in five nursing homes in León (Spain). A precise weighing method was used to conduct the control of food intake covering seven days. Energy, alcohol, iron, folate, vitamin B12, and vitamin C intake were obtained. Weight, and Height also were measured. Serum iron, serum ferritin, haemoglobin and hematocrit were also measured. Average daily iron intake was higher than the 10 mg recommended by the National Academy of Science although significantly higher (p < 0.05) in males (17.0 +/- 7.4 mg) than in females (11.8 +/- 1.5 mg). Moreover, vitamin C intake in all subjects is high (118.8 +/- 43.7 mg) and higher than Spanish RDA (198%). Average intakes of folate and vitamin B12 in the present study exceeded the RDA, (103% and 144%). However, 45.83% of males and 5.97% of females showed deficiencies in vitamin B12 and 53.91% of the subjects showed deficiencies in folic acid. The average haemoglobin concentration (14.28 +/- 1.33 g/dL), hematocrit percentage (43.71 +/- 6.31), ferritin concentration (87.01 +/- 59.74 ng/mL) and serum iron (85.36 +/- 33.98 micrograms/dL) showed similar figures to the results obtained in other studies carried out on elderly populations. It would be necessary to adequately compose the menus given in nursing homes, decreasing energy contribution, and supplying micronutrient rich foods or fortified foods.

Perfil de las competencias profesionales del diplomado en nutrición humana y dietética / Profile of profesional skills and abilities of the graduate in nutrition and dietetics

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Daily intake of macronutrients in a group of institutionalized elderly people in León. Spain.

Monitoring of energy distribution of the three macronutrients of diet could be beneficial in order to improve the physiological status of elderly people. The objective of this study is to analyse total daily energy intake as well as the caloric contribution of the macronutrients and alcohol, which make up basic diet of five nursing homes in León (Spain). Dietary consumption was evaluated in a group of 107 elderly people, aged 65-98 years. A precise weighing method was used to conduct the control of food intake covering seven days. Protein, carbohydrates, fat, alcohol, dietary fiber and cholesterol intake were obtained. Weight, and Height also were measured. Total dietary energy intake was significantly higher in men (130.5%) than in women (115.6%), with regard to recommended value. Relative contribution of macronutrients to total energy intake is extremely unbalanced. Energy derived from protein was very high (16.7%), energy derived from fat was also very high, and significantly higher for females (39.6%) than for males (34.4%), whereas the proportion derived from carbohydrates was very low, although also significantly higher in females (41.5%) than in males (35.8%), due to the high energy percentage that make up the alcohol intake in males (9.1%). A review of the diet offered by nursing homes, not only directed at the adjustment of total energy intake but also with respect to alcohol intake and macronutrient content of foodstuffs used in the elaboration of the menus, would be required in order not to unbalance the caloric profile of the diet.

Comparison of dietary intake among overweight and non-overweight schoolchildren.

OBJECTIVE: To determine differences in dietary intake between overweight and non-overweight schoolchildren and differences in consumption during the day and in the course of the week. RESEARCH METHODS AND PROCEDURES: Using a cross-sectional design, 32 schoolchildren (11-y-old) were selected at random. The parents of children recorded dietary intake for a week using the food weighing method. The children were considered to be overweight when the weight for height was higher than 90th percentile. RESULTS: Some 46.9% of examined schoolchildren were considered overweight. Percentage energy intake reported was significantly lower in the overweight group compared to the non-overweight children (8948.7 vs 9590.1 kJ/day; P<0.01). Carbohydrate intake was significantly greater in the non-overweight schoolchildren (250.9+/-58.8 vs 222.1+/-77.4 g/day; P<0.01). The difference in protein intake between week and weekend days was significant (81.6+/-25.5 in the week days vs 73.9+/-21.4 g/day in the weekend days; P<0.05). DISCUSSION: The data suggest the belief that overweight children eat more than non-overweight children is not correct. These findings suggest that the positive energy balance causing overweight is due possibly to a low energy output.

Relationship between breakfast and obesity among school-aged children. / Relación entre el desayuno y la obesidad en escolares.

Breakfast models among children are an issue of public health concern given the association between breakfast and school performance and its potential relationship with obesity. Food intake, energy, and nutrients in the breakfast of 32 school aged children (11-years olds) and its relationship with body mass index (BMI, kg/m2) were examined. The analysis was made by means of anthropometric measurements and a record of weekly food intake using the accurate weighed amount method. The percentage of studied children with overweight/obesity reached 46.9 (weight for height > 90 percentile). The proportional calorie intake in breakfast was lower than that recommended (16.6%). The association observed between caloric percentage of breakfast regarding daily energy and BMI was not significant. Nevertheless, significant correlations were found between fruit group (Pearson r = 0.6286) and protein foods (Pearson r = -0.7653) with BMI. The amount of total lipids (34.4%) and saturated lipids (19.4% in breakfast exceed the recommendations. Further studies are necessary to confirm these data and serve as basis for the design of nutritional education programs.

Lipolytic effects of beta1, beta2 and beta3-adrenergic agonists in isolated human fat cells from omental and retroperitoneal adipose tissues.

The presence of beta1- and beta2-adrenoceptors has been clearly established in human fat cells. There is some controversy about the presence and function of beta3-adrenoceptors. It is well established that there are marked regional variations in catecholamine-induced lipolysis. In this work the possibility that a beta3-adrenoceptor plays a significant role in the control of lipid mobilization is studied and also its importance in comparison to beta1- and beta2-adrenoceptors in isolated human fat cells, is evaluated, by measuring the in vitro lipolysis induced by dobutamine, salbutamol, metaproterenol, BRL 37344 and CGP 12177A. Human adipocytes from omental and retroperitoneal fat deposits exhibited an "atypical" beta-adrenergic response but, given the small lipolytic effect initiated by BRL 37344 and CGP 12177A, they are probably poorly equipped in functional beta3-adrenoceptors.