How to get children moving? The effectiveness of school-based interventions promoting physical activity in children and adolescents - A systematic review and meta-analysis of randomized controlled- and controlled studies.

This systematic review and meta-analysis summarizes the effectiveness of school-based physical activity (PA) interventions on children's and adolescents' PA. As no robust empirical evidence exists regarding what seems to characterize the school-based PA interventions that are most effective, we further aimed to map key factors of particular importance when trying to increase PA in early stages of life through school-based strategies. Intervention effects were calculated as standardized between-group (i.

Facilitating ambulatory heart rate variability analysis using accelerometry-based classifications of body position and self-reported sleep.

This study aimed to examine differences in heart rate variability (HRV) across accelerometer-derived position, self-reported sleep, and different summary measures (sleep, 24 h HRV) in free-living settings using open-source methodology.HRV is a biomarker of autonomic activity. As it is strongly affected by factors such as physical behaviour, stress, and sleep, ambulatory HRV analysis is challenging.

Recreational screen time trajectories during early childhood and imaging-measured body composition at age 7 in the Odense child cohort.

Background: Children spend increasing amounts of time on recreational screen media, which may lead to an obesogenic environment.

Objectives: We investigated the association of trajectories of screen time across ages 3, 5 and 7 years with body composition at age 7 in the Odense Child Cohort.

Methods: Data were collected in the Municipality of Odense, Denmark, between 2010 and 2019.

Effects of Limiting Recreational Screen Media Use on Physical Activity and Sleep in Families With Children: A Cluster Randomized Clinical Trial.

Importance: Children and adults spend large amounts of their leisure time using screen media, which may affect their health and behavior.

Objective: To investigate the effect of reducing household recreational screen media use on physical activity and sleep in children and adults.

Design, Setting, And Participants: This was a cluster randomized clinical trial with a 2-week follow-up.

Effects of limiting digital screen use on well-being, mood, and biomarkers of stress in adults.

Studies have linked higher digital screen use with poorer mental health. However, there is limited experimental evidence to suggest a causal relationship. In this trial, we aimed to investigate the effects of limiting recreational digital screen use on mental well-being, mood, and biomarkers of stress in healthy young and middle-aged adults.

Short-term efficacy of reducing screen media use on physical activity, sleep, and physiological stress in families with children aged 4-14: study protocol for the SCREENS randomized controlled trial.

Background: During the recent decade presence of digital media, especially handheld devices, in everyday life, has been increasing. Survey data suggests that children and adults spend much of their leisure on screen media, including use of social media and video services. Despite much public debate on possible harmful effects of such behavioral shifts, evidence from rigorously conducted randomized controlled trials in free-living settings, investigating the efficacy of reducing screen media use on physical activity, sleep, and physiological stress, is still lacking.