However , total PA , sedentary behaviour , and different PA intensities were not associated with body mass index ( BMI ) or waist circumference .
Adiposity levels were lower among preschool children engaged in more ( moderate-to- ) vigorous PA compared with their peers , but no associations  between  PA and BMI or waist circumference were found
Evidence on the association between  physical activity ( PA ) and adiposity in young children is inconclusive .
A systematic review and meta-analyses were conducted to examine associations between accelerometer-derived PA and varying adiposity outcomes  in preschool children .
A family-based approach to preventing excessive weight gain.
OBJECTIVE Preventing weight gain in adults and excessive weight gain in children is a high priority . We evaluated the ability of a family-based program aim ed at increasing steps and cereal consumption ( for breakfast and snacks ) to reduce weight gain in children and adults . RESEARCH METHODS AND PROCEDURES Families ( n = 105 ) with at least one 8- to 12-year-old child who was at-risk-for-overweight or overweight ( design ated as the target child ) were recruited for the study . Eighty-two families were r and omly assigned to receive the family-based intervention and 23 families to the control condition .  The 13-week intervention consisted of specific increases in daily steps ( an additional 2000 steps/d ) and consumption of 2 servings/d of ready-to-eat cereal . RESULTS The intervention was successful in increasing walking ( steps ) and cereal consumption . The intervention had positive , significant effects on percentage BMI -for-age and percentage body fat for target children and weight , BMI , and percentage body fat for parents . On further analysis , the positive effects of the intervention were seen largely in target girls and moms , rather than in target boys and dads . DISCUSSION This family-based weight gain prevention program based on small changes holds promise for reducing excessive weight gain in families and especially in growing overweight children
However , total PA , sedentary behaviour , and different PA intensities were not associated with body mass index ( BMI ) or waist circumference .
Adiposity levels were lower among preschool children engaged in more ( moderate-to- ) vigorous PA compared with their peers , but no associations  between  PA and BMI or waist circumference were found
Evidence on the association between  physical activity ( PA ) and adiposity in young children is inconclusive .
A systematic review and meta-analyses were conducted to examine associations between accelerometer-derived PA and varying adiposity outcomes  in preschool children .