Background: Physical activity and sedentary behaviour in youth have been reported to vary by sex, age, weight status and country. However, supporting data are often self-reported and/or do not encompass a wide range of ages or geographical locations. This study aimed to describe objectively-measured physical activity and sedentary time ...
Background: It has been proposed that introducing daylight saving measures could increase children’s physical activity, but there exists little research on this issue. This study therefore examined associations between time of sunset and activity levels, including using the bi-annual ‘changing of the clocks’ as a natural experiment. Methods: 23,188 children ...
Background: Screen time (including TV viewing/computer use) may be adversely associated with metabolic and mental health in children. Purpose: To describe the prevalence and sociodemographic correlates of screen time in an international sample of children aged 4–17 years. Methods: Data from the International Children’s Accelerometry Database were collected between 1997–2009 ...
Background: Observational studies and lab-based trials indicated protective effects of regularly interrupting sedentary time on cardio-metabolic health in adults. We examined associations of breaks in sedentary time with cardio-metabolic risk in children. Methods: We included 19,520 children (aged 4-18, 48% boys) from 14 studies participating in ICAD, providing data on cardio-metabolic risk (at ...