Background: Applying latent class analysis (LCA) to accelerometry can help elucidated underlying patterns. This study described the patterns of accelerometer-determined sedentary behavior and physical activity among youth by applying LCA to a nationally representative United States (US) sample.
Methods: Using 2003–2006 National Health and Nutrition Examination Survey data, 3998 youths 6–17 years wore ...
Background: Adolescence is a recognised period of physical activity decline, particularly among low-income communities. We report the 12-month (midpoint) effects of a 2-year multicomponent physical activity intervention implemented in disadvantaged secondary schools.
Methods: A cluster randomised trial was undertaken in 10 secondary schools located in disadvantaged areas in New South Wales, ...
Objectives: Describe (1) time-segment specific changes in physical activity (PA) into adolescence, (2) differences in change in PA between specific time-segments (weekdays–weekends, in-school–out-of-school, out-of-school–weekends, lesson-time–lunch-time), and (3) associations of change in time-segment specific with overall PA.
Design: Longitudinal observational study (4-year follow-up).
Methods: Children from the SPEEDY study (n = 769, 42% ...
Background: As physical activity is important for health and well-being, it is essential to monitor population prevalence of physical activity. Surveillance is dependent on the use of valid and reliable measurement tools. The PACE+ questionnaire is used globally in youth and has acceptable reliability; however it has not been validated ...
Objective: To assess the relationships among physical activity, measured objectively, and attention capacity in European adolescents.
Study design: The study included 273 adolescents, aged 12.5-17.5 years, who participated in the Healthy Lifestyle in Europe by Nutrition in Adolescence Study. Participants wore a uniaxial accelerometer for 7 days to measure physical activity. The ...
Purpose: To assess the association of dog walking with adolescents' moderate-to-vigorous physical activity (MVPA) and body mass index (BMI), and identify correlates of dog walking.
Methods/design: Participants were 12–17 year-olds (n = 925) from the Baltimore, MD and Seattle, WA regions. Differences in accelerometer-assessed minutes/day of MVPA and self-reported BMI (percentile) ...
Objectives: To compare adolescents’ physical activity at home, near home, at school, near school, and at other locations.
Methods: Adolescents (N = 549) were ages 12 to 16 years (49.9% girls, 31.3% nonwhite or Hispanic) from 447 census block groups in 2 US regions. Accelerometers and Global Positioning System devices assessed minutes of and proportion of time spent ...
Background: The aim of this study was to examine the effectiveness and cost of an after-school dance intervention at increasing the physical activity levels of Year 7 girls (age 11–12).
Methods: A cluster randomised controlled trial was conducted in 18 secondary schools. Participants were Year 7 girls attending a study school. The Bristol Girls ...
Background: Misreporting of energy intake is well known from traditional dietary assessment methods, and assessment among the youngest is especially challenging. Web-based tools are increasingly popular. However, little is known whether these web-tools improve the recording accuracy.
Objective: To assess the accuracy of children and adolescent's energy intake estimated from ...
Objectives: To investigate relations of walking, bicycling and vehicle time to neighborhood walkability and total physical activity in youth.
Methods: Participants (N=690) were from 380 census block groups of high/low walkability and income in two US regions. Home neighborhood residential density, intersection density, retail density, entertainment density and walkability were ...