Background Multi‐strategic community wide interventions for physical activity are
increasingly popular but their ability to achieve population level improvements is unknown …

Background Physical activity among children and adolescents is associated with lower
adiposity, improved cardio‐metabolic health, and improved fitness. Worldwide, fewer than …

This book builds on and is a sequel to our book Targeted Learning: Causal Inference for
Observational and Experimental Studies (2011). Since the publication of this first book on …

This narrative review describes the available scientific evidence regarding promising school-
based strategies to increase physical activity of adolescents. We conducted a literature …

Introduction: Being outdoors has a positive influence on health among children. Evidence in
this area is limited and many studies have used self-reported measures. Objective context …

Background Socioeconomic inequalities in health behaviour emerge in early life before
tracking into adulthood. Many interventions to improve childhood health behaviours are …

Background Accelerometry is increasingly being recognized as an accurate and reliable
method to assess free-living physical activity (PA) in children and adolescents. However …

Background The severity and course of spinal pain is poorly understood in adolescents. The
study aimed to determine the prevalence and two-year incidence, as well as the course …

Background School-based intervention can contribute to the promotion of cardiorespiratory
fitness (CRF) in adolescents. However, it is neces sary to systematize how intervention …

Increasing children's physical activity at school is a national focus in the US to address
childhood obesity. While research has demonstrated associations between aspects of …