HOP'N after-school project: an obesity prevention randomized controlled trial

International Journal of Behavioral Nutrition and Physical Activity

Research

Gregory J Welk¹  David A Dzewaltowski²  Tanis J Hastmann³  Richard R Rosenkranz³  Karly S Geller³  George A Milliken⁴  Karen J Coleman⁵ 

[1] Department of Kinesiology, Iowa State University, 50011, Ames, IA, USA;Department of Kinesiology, Kansas State University, 66506, Manhattan, KS, USA;Department of Kinesiology, Kansas State University, 66506, Manhattan, KS, USA;Department of Human Nutrition, Kansas State University, 66506, Manhattan, KS, USA;Department of Statistics, Kansas State University, 66506, Manhattan, KS, USA;Research and Evaluation, Southern California Permanente Medical Group, 91101, Pasadena, CA, USA;

关键词: Sedentary Behavior;    Control Site;    Fourth Grade;    Active Recreation;    Normal Weight Child;   

DOI  :  10.1186/1479-5868-7-90

 received in 2010-04-14, accepted in 2010-12-13,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundThis paper reports the primary outcomes of the Healthy Opportunities for Physical Activity and Nutrition (HOP'N) after-school project, which was an effectiveness trial designed to evaluate the prevention of childhood obesity through building the capacity of after-school staff to increase physical activity (PA) and fruit and vegetable (FV) opportunities.MethodsWe conducted a three-year, nested cross-sectional group randomized controlled effectiveness trial. After a baseline assessment year (2005-2006), schools and their after-school programs were randomized to the HOP'N after-school program (n = 4) or control (n = 3), and assessed for two subsequent years (intervention year 1, 2006-2007; intervention year 2, 2007-2008). Across the three years, 715 fourth grade students, and 246 third and fourth grade after-school program participants were included in the study. HOP'N included community government human service agency (Cooperative Extension) led community development efforts, a three-time yearly training of after-school staff, daily PA for 30 minutes following CATCH guidelines, a daily healthful snack, and a weekly nutrition and PA curriculum (HOP'N Club). Child outcomes included change in age- and gender-specific body mass index z-scores (BMIz) across the school year and PA during after-school time measured by accelerometers. The success of HOP'N in changing after-school program opportunities was evaluated by observations over the school year of after-school program physical activity sessions and snack FV offerings. Data were analyzed in 2009.ResultsThe intervention had no impact on changes in BMIz. Overweight/obese children attending HOP'N after-school programs performed 5.92 minutes more moderate-to-vigorous PA per day after intervention, which eliminated a baseline year deficit of 9.65 minutes per day (p < 0.05) compared to control site overweight/obese children. Active recreation program time at HOP'N sites was 23.40 minutes (intervention year 1, p = 0.01) and 14.20 minutes (intervention year 2, p = 0.10) greater than control sites. HOP'N sites and control sites did not differ in the number of FV offered as snacks.ConclusionsThe HOP'N program had a positive impact on overweight/obese children's PA and after-school active recreation time.Trial registrationNCT01015599.

【 授权许可】

CC BY   
© Dzewaltowski et al; licensee BioMed Central Ltd. 2010. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.