title: Are children of today less active than before and is their health in danger? What can we do?
authors.forename: L B
authors.initials: LB
authors.lastname: Andersen
authors.forename: W
authors.initials: W
authors.lastname: van Mechelen
mesh_terms: D015992:Body Mass Index; D015519:Bone Density; D002318:Cardiovascular Diseases / Q000517:prevention & control*; D002648:Child; D002669:Child Welfare; D015438:Health Behavior; D006801:Humans; D009043:Motor Activity; D009765:Obesity / Q000517:prevention & control*; D012307:Risk Factors; D013177:Sports