Background: Four-day school week (FDSW) use has increased substantially among US districts in recent years, but limited data exist on health impacts of this school schedule. This study examined associations of reduced school exposure via FDSWs with adolescent health and risk behaviors, obesity, and food security. Methods: Self-report data from…

Childhood obesity and its repercussions will be one of the most serious public health challenges of the 21st century. Promoting physical activity and preventing the decline of children's fitness and the increase of childhood obesity, diabetes, and cardiovascular disease therefore need to be a high priority. So far, besides a few large-scale…

Childhood obesity is emerging as a considerable public health problem with no clear antidote. The school food environment is a potential intervention point for policy makers, with competitive food and beverage regulation as a possible policy lever. This research examines the link between competitive food and beverage availability in school and…

Evidence is building regarding the association between inadequate amounts of sleep and the risk of obesity, especially in younger children. Less is known about the relationship between change in sleep and change in weight during adolescence. The objective of this study was to examine the longitudinal relationship between change in sleep duration…

Background: Social capital in neighborhoods and workplaces positively affects health. Less is known about the influence of school social capital on student health outcomes, in particular weight status. We sought to examine the association between individual- and school-level social capital and student body mass index (BMI). Methods: Analyzing data…

Purpose: To examine the utility of the theory of planned behavior (TPB) for explaining physical activity (PA) intention and behavior among a large population sample of overweight and obese adolescents (Alberta, Canada), using a web-based survey. Secondary objectives were to examine the mediating effects of the TPB constructs and moderating effects…

Background: The purpose of the study was to assess adolescents' perceptions of controllability and its relation to weight stereotypes as a function of gender. Methods: Two hundred and thirty-one seventh and eighth graders from physical education classes completed a perception of controllability questionnaire and weight stereotype explicit scale…

The purpose of this study was to validate physical activity time in middle school physical education as measured by pedometers in relation to a criterion measure, namely, students' accelerometer determined moderate to vigorous physical activity (MVPA). Participants were 155 sixth to eighth graders participating in regularly scheduled physical…

Background: Adolescence may be a crucial period for developing obesity and associated mental health problems. This study examined the relationship of weight status on body image, eating behavior, and depressive symptoms in youth. Methods: A survey was conducted on 1490 youth attending grades 7-12. Participants completed questionnaires on body…

The objective of this study was to examine (1) the association between consumption of fast food and sweets on overweight among U.S. adolescents; and (2) how consumption of different types of food and physical exercise is associated with parental education and other background variables. The data were based on cross-sectional, national survey study…

Study aim: To examine the prevalence of obesity and its correlation with blood pressure, waist circumference and other health related risk factors (smoking, alcohol consumption, physical inactivity and TV/PC-screen time) in German youths. Material and methods: A cohort of 831 boys and 808 girls, fifth- to tenth-graders from 3 German high schools…

Children and adolescents in the United States are increasingly overweight at younger ages. Many studies have investigated the issue from the perspective of professionals and other adults. This study assessed early adolescents' perceptions regarding the magnitude of, effects of, causes of, solutions for, and learning preferences related to…