chapter  3
12 Pages

Tracking physical activity, energy balance and health from childhood to adulthood

Introduction There is considerable interest in physical activity from practitioners, policymakers and the public, because of the impact low activity levels may have upon health. The relationship is of significant current international interest due to the association with rising obesity levels; both during childhood and adulthood, spanning both genders, and different ethnicities and socio-economic status. The World Health Organization (2009) reports that globally there are more than 1 billion overweight adults, with at least 300 million of them classified as obese.