Original Article

Reducing High BMI in African American Preschoolers Effects of a Behavior-Based Physical Activity Intervention on Caloric Expenditure

Authors: James J. Annesi PhD, FAAHB, Alice E. Smith MS, MBA, Gisèle A. Tennant MSc

Abstract

Objectives: Overweight and obesity in young children are increasing concerns for medical professionals. Lack of sufficient physical activity may be the primary cause; therefore, the development and testing of a theory-based intervention for preschoolers is a priority.

Methods: A 30-minutes/day preschool-based intervention (Start For Life), with a foundation in social cognitive theory that emphasizes the use of self-regulation skills and feelings of mastery (self-efficacy), was administered for 9 months to 4- and 5-year-old African American children.

Results: Findings indicated a significant increase in accelerometer-measured moderate-to-vigorous and vigorous physical activity during the 7-hour school day. Reductions in body mass index (BMI; kg/m2) were significant, with greater effects found in participants with an initially higher BMI. Further analyses indicated that the kilocalories expended through physical activity explained approximately 87% of the weight lost. Participants’ sex did not affect the identified changes in BMI.

Conclusions: A brief theory-based physical activity intervention (Start For Life) was associated with increased moderate-to-vigorous and vigorous physical activity and reduced overweight/obesity in 4- to 5-year-old preschoolers. Because of its practical format, opportunities for widespread dissemination may be possible.

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References

1. Singh AS, Mulder C, Twisk JW, et al. Tracking of childhood overweight into adulthood: a systematic review of the literature. Obes Rev. 2008; 9: 474–488.
 
2. Kopelman P. Health risks associated with overweight and obesity. Obes Rev. 2007; 8: 13–17.
 
3. Ogden CL, Carroll MD, Curtin LR, et al. Prevalence of high body mass index in US children and adolescences. JAMA. 2010; 303: 242–249.
 
4. Must A, Tybor DJ. Physical activity and sedentary behavior: a review of longitudinal studies of weight and adiposity in youth. Int J Obes (Lond). 2005; 29: S84–S96.
 
5. Ward DS, Vaughn A, McWilliams C, et al. Physical activity at child care settings: review and research recommendations. Am J Lifestyle Med. 2009; 3: 474–488.
 
6. Hesketh KD, Campbell KJ. Interventions to prevent obesity in 0–5 year olds: an updated systematic review of the literature. Obesity (Silver Spring). 2010; 18: S27–S35.
 
7. Baranowski T, Lin LS, Wetter DW, et al. Theory as mediating variables: why aren’t community interventions working as desired? Ann Epidemiol. 1997; 7: S89–S95.
 
8. Bandura A . Social Foundations of Thought and Action: A Social Cognitive Theory. Englewood Cliffs, NJ: Prentice Hall; 1986.
 
9. Annesi JJ, Tennant G, Westcott WL, et al. Effects of the Youth Fit For Life protocol on physiological, psychological, and behavioral factors at YMCA Calgary after-school care sites. Psychol Rep. 2009; 104: 879–895.
 
10. US Department of Health and Human Services. 2000 CDC growth charts: United States. http://www.cdc.gov/growthcharts. Accessed June 5, 2013.
 
11. FY 2013 Office of Head Start Monitoring Protocol. Washington, DC: Administration for Children and Families, US Department of Health and Human Services; 2012.
 
12. Cole TJ, Faith MS, Pietrobelli A, et al. What is the best measure of adiposity change in growing children: BMI, BMI %, BMI z-score, or BMI centile? Eur J Clin Nutr. 2005; 59: 419–425.
 
13. American College of Sports Medicine. ACSM’s Guidelines for Exercise Testing and Prescription. 8th ed. New York: Lippincott Williams & Wilkins; 2010; .
 
14. Pate RR, Almeida MJ, McIver KL, et al. Validation and calibration of an accelerometer in preschool children. Obesity (Silver Spring). 2006; 14: 2000–2006.
 
15. Hall KD. What is the required energy deficit per unit weight loss? Int J Obes (Lond). 2008; 32: 573–576.