Publications by authors named "Gerson L Ferrari"
An effective behavior change program is the first line of prevention for youth obesity. However, effectiveness in prevention of adolescent obesity requires several approaches, with special attention paid to disordered eating behaviors and psychological support, among other environmental factors. The aim of this systematic review is to compare the impact of two types of obesity prevention programs, inclusive of behavior change components, on weight outcomes.
View Article and Find Full Text PDFBackground: Few studies have used ecological models to study multiple levels of association with objectively measured moderate-to-vigorous physical activity (MVPA) in young children from middle-income countries. The purpose of this study was to examine potential correlates of objectively measured MVPA in Brazilian children.
Methods: The sample consisted of 328 children.
The current study evaluated physical activity (PA) level and its associated effects among students in the public network of São Paulo, Brazil. A cross-sectional study was taken using a representative sample of students in São Paulo public school system. International Physical Activity Questionnaire determined PA level.
View Article and Find Full Text PDFObjective:: To analyze the associations between socioeconomic status (SES) indicators and physical activity and overweight/obesity in children.
Methods:: 485 children wore accelerometers for 7 days. Variables included time in sedentary behavior and moderate-to-vigorous physical activity (MVPA), and steps/day.
Objective: To describe the association between electronic devices in the bedroom with sedentary time and physical activity, both assessed by accelerometry, in addition to body mass index in children from São Caetano do Sul.
Methods: The sample consisted of 441 children. The presence of electronic equipment (television, personal computer, and videogames) in the bedroom was assessed by a questionnaire.
This study aimed to analyze the independent associations of accelerometer-determined sedentary behavior, physical activity, and steps/day with body composition variables in Brazilian children. 485 children wore accelerometers for 7 days. Variables included time in sedentary behavior and different physical activity intensities (light, moderate, vigorous, or moderate-to-vigorous) and steps/day.
View Article and Find Full Text PDFBackground: Studies have found an association between television (TV) viewing and physical activity levels. The purpose of this study was to examine the association between TV viewing and physical activity in 10-year-old Brazilian children.
Methods: The sample consisted of 485 children.
Objectives: To develop reference curves for the body fat index (BFI) in the pediatric population, in adolescents from the city of São Paulo, Brazil, and verify their association with body mass index and body fat percentage.
Methods: The study is part of the research project "Nutritional Profile of Adolescents from Public and Private Schools of São Paulo" that was performed in 2004-2005. A total of 4,686 adolescents (2,130 boys and 2,556 girls) aged 10-15 years were divided into two groups: 10-12 and 13-15 years of age.
Background: The objective of this study was to determine body fat percentiles of adolescents in the city of São Paulo, Brazil, according to gender, age, and sexual maturation.
Methods: This study involved 4,690 adolescents aged 10-15 years across 31 schools in the city of São Paulo. Sexual maturation was assessed in terms of Tanner stage.
Article Synopsis
- The study aimed to analyze changes in body fat among school-age children over 20 years, focusing on their nutritional status.
- It included 1,095 prepubescent children from 1990 to 2011, assessing their body weight, height, and body fat using skinfold measurements, and categorizing them into nutritional groups based on World Health Organization standards.
- Results showed an increase in overweight and obese children for both boys and girls, with a notable rise in central body fat distribution, highlighting that similar BMI values can conceal differences in body fat distribution.