Power-up: a collaborative after-school program to prevent obesity in African American children

Prog Community Health Partnersh. 2011 Winter;5(4):363-73.


Background: Schools represent a key potential venue for addressing childhood obesity.

Objective: To assess the feasibility of Power-Up, an after-school program to decrease obesity risk among African American children, using community-based participatory research (CBPR) principles.

Methods: Teachers led 14 weekly nutrition and physical activity sessions during afterschool care at the Woodlawn Community School on Chicago's South Side. Forty African American children ages 5 to 12 participated; their 28 parents discussed similar topics weekly at pickup time, and families practiced relevant skills at home. Pre- and post-intervention anthropometrics, blood pressure, dietary measures, and health knowledge and beliefs for children and parents were compared in univariate analysis.

Results: At baseline, 26% of children were overweight; 28% were obese. Post-intervention, mean body mass index (BMI) z scores decreased from 1.05 to 0.81 (p<.0001). Changes were more pronounced for overweight (-0.206 z-score units) than for obese children (-0.062 z-score units; p=.01). Girls decreased their combined prevalence of overweight/obesity from 52% to 46%; prevalence across these categories did not change for boys. The prevalence of healthful attitudes rose, including plans to "eat more foods that are good for you" (77% to 90%; p=.027) and "planning to try some new sports" (80% to 88%; p=.007).

Conclusion: Children in the Power-Up program reduced mean BMI z scores significantly. The after-school venue proved feasible. The use of CBPR principles helped to integrate Power-Up into school activities and contributed to likelihood of sustainability. Engaging parents effectively in the afterschool time frame proved challenging; additional strategies to engage parents are under development. Plans are underway to evaluate this intervention through a randomized study.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Attitude to Health
  • Black or African American*
  • Blood Pressure
  • Body Mass Index
  • Chicago / epidemiology
  • Child
  • Child, Preschool
  • Community-Based Participatory Research
  • Diet
  • Exercise
  • Female
  • Health Behavior
  • Health Promotion / organization & administration*
  • Humans
  • Male
  • Obesity / ethnology
  • Obesity / prevention & control*
  • Obesity / therapy*
  • Overweight / prevention & control
  • Overweight / therapy
  • Program Evaluation
  • Schools / organization & administration*
  • Sex Factors
  • Social Support