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Step based physical activity guidelines for preschool-aged children.

Susana Vale1, Stewart G Trost2, Michael J Duncan3

  • 1Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Portugal; Department of Sport Science. High School of Education, Polytechnic Institute of Oporto, Portugal.

Preventive Medicine
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Summary

Preschool children need 3 hours of daily physical activity (PA). This study found that fewer than 9000 steps per day indicates insufficient PA for young children.

Keywords:
Physical activity guidelinesPreschool childrenSteps

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Area of Science:

  • Pediatric physical activity
  • Public health recommendations
  • Objective measurement tools

Background:

  • Public health guidelines recommend 3 hours of daily physical activity (PA) for preschoolers.
  • Objective monitoring of PA in preschoolers is crucial for assessing adherence to recommendations.
  • Pedometers and accelerometers offer reliable methods for measuring children's PA levels.

Purpose of the Study:

  • To establish step-based physical activity recommendations for preschool-aged children.
  • To determine a daily step count threshold equivalent to 3 hours of moderate-to-vigorous PA.
  • To provide objective criteria for assessing PA compliance in young children.

Main Methods:

  • A sample of 916 preschool children (aged 3-6 years) from Portugal participated.
  • Children wore ActiGraph GT1M accelerometers for 7 days to measure PA intensity and steps.
  • Receiver operating characteristic (ROC) curve analysis identified the optimal daily step count threshold.

Main Results:

  • A strong positive correlation (r=0.76, p<0.001) was found between total PA minutes and daily steps.
  • The optimal threshold for achieving ≥3 hours of PA was 9099 steps per day.
  • The ROC analysis showed an area under the curve of 0.86 (95% CI: 0.84 to 0.88).

Conclusions:

  • Preschool children accumulating less than 9000 steps daily are likely insufficiently active.
  • This step-based recommendation provides a practical tool for public health monitoring.
  • The findings support the use of pedometers to assess PA in early childhood.