Bárbara D Leyton

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OBJECTIVE To assess the impact of a 6 months nutrition education and physical activity intervention on primary school children through changes in adiposity and physical fitness. DESIGN Longitudinal school-based controlled evaluation study. SUBJECTS Children from 1st to 8th grade, 2141 in intervention and 945 in control schools. INTERVENTION Nutrition(More)
OBJECTIVE To evaluate the effectiveness of a 12-month multicomponent obesity prevention intervention. Setting. 9 elementary schools in Santiago, Chile. Subjects. 6-8 y old low-income children (N = 1474). DESIGN Randomized controlled study; 5 intervention/4 control schools. We trained teachers to deliver nutrition contents and improve the quality of PE(More)
OBJECTIVE Obesity prevalence among Chilean children is 19.4%. The present study aimed to assess the effectiveness of a school-based obesity prevention programme. DESIGN Non-randomized controlled study. The intervention included activities in nutrition and physical activity, fully applied the first year and partially in the second one. Primary outcomes(More)
The purpose of this study was to describe anthropometric and physical fitness characteristics of low-income Chilean preschool children and to examine whether weight status influences children's performance on fitness tests. A total of 434 preschool children (246 boys; 5.48 ± 0.31 years) participated in our study. Anthropometry (weight, height, body mass(More)
OBJECTIVE We determined relative effects of nutritional status, intellectual ability, exposure to mass media, and socioeconomic, sociocultural, familial, demographic, and educational variables on scholastic achievement (SA). METHODS This was a cross-sectional study. Exposure to mass media and nutritional, intellectual, socioeconomic, sociocultural,(More)
This study determined the percentage of obesity among lower-income Chilean children 4-6 years of age, by socioeconomic vulnerability (family score assessing the children's risk of becoming poor) and height. The sample included 17,080 children with anthropometry at 4, 5, and 6 years of age, and three categories of socioeconomic vulnerability. Body mass index(More)
BACKGROUND In 2007, a preventive strategy for childhood obesity, that included food education and an increase in physical activity, was implemented in seven public schools located in Santiago. In four of these schools, a counseling program about healthy lifestyles for teachers was also carried out. AIM To test if counseling had an effect in the(More)
INTRODUCTION When compared to popular questionnaires, accelerometry provides more reliable information regarding physical activity. Thus, the objective has been to document the variability of physical activity in Chilean children in relation to age, gender, nutritional status and days of the week, and to determine how many of them meet the recommendation(More)
Obesity in Chilean children has increased markedly over the past decades. School-based obesity prevention interventions have been launched by the Ministry of Health and academic groups to tackle this condition. We summarize the main characteristics of the interventions that we have conducted and reflect on the lessons learned. Since 2002, we conducted 1(More)