Estimation of chronic dietary intake of pesticide residues.

Objective: To estimate the maximum theoretical daily intake of pesticides potentially consumed, chronically, by the Brazilian population.

Method: By using data from the food consumption section of the 2008-2009 Household Budget Survey to characterize the population diet, a database was built to group the foods based on the NOVA classification. Considering the maximum residue limit values of each pesticide authorized in the country until 2016, the limits of all consumed foods were added and multiplied by the amount consumed, resulting in the maximum theoretical intake index, which was compared with the acceptable daily intake.

[Calibration study of the Food Frequency Questionnaire for Adolescents (AFFQ)].

In order to establish calibration factors of the Adolescent Food Frequency Questionnaire (AFFQ), 74 boys and girls from Piracicaba (SP, Brazil) with ages ranging from 10 to 14 took part in the study. Dietary intake (assessed by the food frequency questionnaire and 24-hour recall) was assessed and adjusted for energy intake. Descriptive statistics, variance analysis using one classification factor, Pearson's correlation coefficients and linear regression were performed.

[Determining of body mass index in adolescents from public schools in Piracicaba, São Paulo State].

The objective of this study was to assess determining factors of body mass index (BMI) in adolescents enrolled in public schools in Piracicaba, São Paulo. The sample had 328 adolescents from both genders; minimum age was 10 years old. We have assessed weight, height, sexual maturity, physical activity, and diet.

[Energy and nutrients disposal in residences: the contrast between north and south regions of Brazil].

This study was proposed to analyze the domiciliary energy disposal, the relative participation of macronutrients in the Total Energy Value (VET) and the contribution of different food groups in the disposal energy in residences of the North and South regions of Brazil according to the monthly family income. It was used the micro data of the Family Budget Research--POF related to the period of 2002/2003 which was carried out by the Brazilian Institute of Geography and Statistics--IBGE. The nutritional analyses were made by using the Virtual Nutri software.

[Development and validation of a physical activity assessment questionnaire for adolescents].

Objective: To develop a physical activity questionnaire aimed at Brazilian adolescents and to assess its validity and reproducibility.

Methods: A total of 94 adolescents (30 males and 64 females) aged 11-16 years were included in the study, which was conducted in 2004. The questionnaire comprised 17 questions on habitual physical activity in the last 12 months (15 questions on sports and physical exercise and two on transportation physical activity), and was standardized to yield final scores for weekly and yearly activity.