Teun Remmers

TABLE OF CONTENTS Chapter 1 General introduction 1 Chapter 2 Relationship between physical activity and the development of body mass index in children 15 Chapter 3 Moderators of the relationship between physical activity enjoyment and physical activity in children 33 Chapter 4 A longitudinal study of children’s outside play using family environment and perceived physical environment as predictors 49 Chapter 5 Moderators of the longitudinal relationship between the perceived physical environment and outside play in children: the KOALA birth cohort study 67 Chapter 6 Daily weather and children's physical activity patterns 85 Chapter 7 Playability of school-environments and after-school physical activity among 8–11 year-old children: specificity of time and place 103 Chapter 8 Critical hours and important environments: relationships between after-school physical activity and the built environment using GPS, GIS and accelerometers in 10-12-year-old children 123 Chapter 9 Unravelling the physical activity context: investigating context-specific physical activity patterns in transition from primary to secondary school using accelerometers, GPS, and GIS 149 Chapter 10 General Discussion 175 Summary 203 Samenvatting 211 Valorization addendum 219 Appendices 225 Dankwoord 239 Curriculum Vitae 245 Publication list 249