Purpose: The purpose of this study was to evaluate the Hunter Illawarra Kids Challenge Using Parent Support physical activity program in overweight children.
Methods: A multisite randomized controlled trial was conducted with three intervention arms: 1) child-centered physical activity skill development program (Activity), 2) parent-centered dietary modification program (DIET), or 3) both programs combined (PA+DIET). Movement skill proficiency, perceived athletic competence, accelerometer-assessed physical activity, and parent-reported time spent in screen behaviors were assessed at baseline, 6 months, and 12 months in 165 prepubertal children aged 5.5-9 yr (59% girls, 78% obese). Differences in changes in outcomes between groups were assessed using linear mixed models.
Results: Compared with the diet group, the activity group (mean (95% confidence interval): +7.7 units (3.8-11.6 units)) and the activity + diet group (+6.7 units (2.9-10.5 units)) displayed 11%-13% greater improvement in overall movement skill proficiency (gross motor quotient) at 6 months. Perceived athletic competence increased across groups at follow-up (across groups: 6 months = +0.21 units (0.11-0.31 units), 12 months = +0.21 units (0.07-0.35 units)). Groups did not differ statistically for change in physical activity outcomes. Total screen time (min·wk−1) decreased in all groups at 6 months (across groups: −385.4 (−501.0 to −269.8)) and in the activity group (−261.8 (−470.5 to −53.1)) and activity + diet group (−340.5 (−534.6 to −146.4)) at 12 months. The diet group reported greater reductions in TV or DVD viewing time at 6 months compared with the activity group (248.6 (24.0-473.3)).
Conclusions: The activity and the activity + diet programs were efficacious in improving overweight children's movement skill proficiency. All programs were efficacious in reducing time spent in screen behaviors. Other correlates may need to be targeted in addition to movement skills to increase physical activity among overweight children.
1Faculty of Education, University of Wollongong, Wollongong, New South Wales, AUSTRALIA; 2Faculty of Education and Arts, University of Newcastle, Newcastle, New South Wales, AUSTRALIA; 3Faculty of Health and Behavioural Sciences, University of Wollongong, Wollongong, New South Wales, AUSTRALIA; 4Faculty of Science and Information Technology, University of Newcastle, Newcastle, New South Wales, AUSTRALIA; and 5Discipline of Paediatrics and Child Health, The Children's Hospital at Westmead, University of Sydney, Sydney, New South Wales, AUSTRALIA
Address for correspondence: Dylan P. Cliff, Ph.D., Faculty of Education, University of Wollongong, Northfields Ave., Wollongong, NSW, 2522, Australia; E-mail: email@example.com.
Submitted for publication November 2009.
Accepted for publication May 2010.