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Effectiveness of Community-Based Minigrants to Increase Physical Activity and Decrease Sedentary Time in Youth.

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Targeted mini-grants increased moderate to vigorous physical activity (MVPA) in North Carolina youth, particularly younger children. Sedentary time did not change significantly, suggesting grant funding can positively impact children's physical activity levels.

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Area of Science:

  • Public Health
  • Community Interventions
  • Pediatric Health

Background:

  • Community-based interventions are crucial for promoting physical activity in youth.
  • Grant funding can support the implementation of multilevel strategies to increase physical activity and reduce sedentary behavior.
  • Understanding the effectiveness of targeted funding is essential for optimizing public health initiatives.

Purpose of the Study:

  • To evaluate the impact of targeted grant funding on moderate to vigorous physical activity (MVPA) and sedentary time in North Carolina youth.
  • To determine the effectiveness of multilevel community interventions supported by grants.
  • To assess changes in physical activity and sedentary behavior across different age groups within the youth population.

Main Methods:

  • A group-randomized controlled trial with a delayed treatment group design was employed.
  • Twenty North Carolina counties participated, with grantees implementing community interventions.
  • Moderate to vigorous physical activity (MVPA) and sedentary time were measured using accelerometry in 2138 youth (grades 4-8) over three data collection waves.

Main Results:

  • A significant increase of 2.32 minutes per day of MVPA was observed across all counties post-implementation.
  • The increase in MVPA was primarily driven by elementary school students (fourth and fifth grades).
  • No significant changes in sedentary time were detected, and no differences in MVPA were found between early and delayed intervention groups.

Conclusions:

  • Low-cost, high-reach mini-grants can yield small but meaningful increases in children's MVPA.
  • Younger children demonstrated greater improvements in MVPA compared to older youth.
  • Further research is recommended to identify specific characteristics of grant-funded projects that maximize MVPA gains in youth.