Efficacy of increasing physical activity to reduce children's visceral fat: a pilot randomized controlled trial.
OBJECTIVE
To examine whether differentially targeting physical activity within the context of pilot family-based pediatric weight control treatment results in differential change in abdominal fat, particularly visceral fat.


METHODS
Twenty-nine overweight children (>85(th) body mass index [BMI] percentile) and at least one participating parent were randomly assigned to one of two family-based behavioral weight management conditions that either targeted 1) primarily dietary change (STANDARD; n = 15) or 2) dietary plus physical activity change (ADDED; n = 14). Differences at post-treatment in overall child weight status (e.g., BMI), whole-body composition (measured by dual x-ray absorptiometry), and abdominal fat (measured by waist circumference and magnetic resonance imaging) were assessed using intent-to-treat analyses, as were post-treatment parent BMI and waist circumference. Child and parent physical activity and dietary behavior changes were also evaluated. Results. At post-treatment, overall child weight status, whole-body composition, and child dietary measures did not differ by condition. Children in the ADDED condition tended to have higher physical activity and lower visceral abdominal fat at post-treatment relative to children in the STANDARD condition.


CONCLUSIONS
Increasing physical activity may be important to optimize reductions in abdominal fat, especially visceral fat, among overweight children provided with family-based behavioral weight management treatment.


BACKGROUND
ClinicalTrials.gov identifier: NCT00359957.
Saelens
Brian E
BE
Seattle Children's Hospital Research Institute and the University of Washington, Seattle, WA 98101, USA. brian.saelens@seattlechildrens.org
Grow
H Mollie
HM
Stark
Lori J
LJ
Seeley
Randy J
RJ
Roehrig
Helmut
H
D015992:Body Mass Index; D002648:Child; D004032:Diet; D015444:Exercise; D005260:Female; D006801:Humans; D050152:Intra-Abdominal Fat / Q000378:metabolism*; D008297:Male; D009765:Obesity / Q000517:prevention & control*; D010865:Pilot Projects; D055105:Waist Circumference