"The Children's Leisure Activities Study (CLASS) was undertaken to explore the family environment as a potentially potent source of influence on children's physical activity and sedentary behaviours. CLASS is the first study in Australia to examine children's physical activity levels objectively using activity monitors (accelerometers). ... The findings highlight that between the ages of 5-12 years, physical activity declines substantially; they also highlight that the family environment is important in terms of children's physical activity and sedentary behaviour." -- P. 1
