Using objective physical activity measures with youth: how many days of monitoring are needed?

@article{Trost2000UsingOP,
  title={Using objective physical activity measures with youth: how many days of monitoring are needed?},
  author={Stewart Trost and Russell R Pate and Patty S. Freedson and James F. Sallis and Wendell C Taylor},
  journal={Medicine and science in sports and exercise},
  year={2000},
  volume={32 2},
  pages={426-31}
}
PURPOSE The purpose of this study was to establish the minimal number of days of monitoring required for accelerometers to assess usual physical activity in children. METHODS A total of 381 students (189 M, 192 F) wore a CSA 7164 uniaxial accelerometer for seven consecutive days. To examine age-related trends students were grouped as follows: Group I: grades 1-3 (N = 92); Group II: grades 4-6 (N = 98); Group III: grades 7-9 (N = 97); Group IV: grades 10-12 (N = 94). Average daily time spent… CONTINUE READING
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