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The FLEX study school-based physical activity programs - measurement and evaluation of implementation.

Catherine M Wright1, Virginia R Chomitz2, Paula J Duquesnay3

  • 1Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, 150 Harrison Avenue, Boston, MA, 02111, USA. catherine.wright@tufts.edu.

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Two school-based physical activity (PA) programs were evaluated for implementation in low-income elementary schools. While both programs were well-received, the 100 Mile Club delivered more PA minutes, whereas CHALK/Just Move had higher child participation.

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Area of Science:

  • Pediatric obesity prevention
  • School-based health promotion
  • Physical activity interventions

Background:

  • Increasing children's physical activity (PA) is crucial for obesity prevention and health promotion.
  • Novel, low-cost PA programs can enhance in-school PA, especially in resource-limited schools.
  • The Fueling Learning through Exercise (FLEX) Study evaluated two such programs.

Purpose of the Study:

  • To describe the implementation fidelity, reach, and dose of two distinct PA programs.
  • To compare the effectiveness of the 100 Mile Club and CHALK/Just Move programs in elementary schools.
  • To identify barriers and facilitators to program implementation in diverse, low-income school settings.

Main Methods:

  • Randomized trial in 13 Massachusetts elementary schools comparing 100 Mile Club to CHALK/Just Move.
  • Data collected over two school years via surveys, accelerometry, and interviews.
  • Implementation fidelity, dose, reach, and sustainability were assessed.

Main Results:

  • Implementation varied; CHALK/Just Move had higher participation (54% vs. 31.2%).
  • 100 Mile Club delivered greater weekly PA dose (34.9 min vs. 19.7 min) and per-session dose (13.6 min vs. 2.7 min).
  • Both programs were well-received by staff and students, despite implementation challenges.

Conclusions:

  • Program implementation fidelity and delivery varied, with some erosion over time.
  • Implementing schools showed increased PA delivery and reception.
  • Low-cost programs can enhance school PA opportunities, but resource issues remain a barrier.