@misc{BordeSmithSutherlandetal.2017,
  author    = {Borde, Ron and Smith, Jordan J. and Sutherland, Rachel and Nathan, Nicole and Lubans, David Revalds},
  title     = {Methodological considerations and impact of school-based interventions on objectively measured physical activity in adolescents: a systematic review and meta-analysis},
  series = {Obesity reviews : an official journal of the International Association for the Study of Obesity},
  volume    = {18},
  journal   = {Obesity reviews : an official journal of the International Association for the Study of Obesity},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {1467-7881},
  doi       = {10.1111/obr.12517},
  pages     = {476 -- 490},
  year      = {2017},
  abstract  = {Objective: The aims of this systematic review and meta-analysis are (i) to determine the impact of school-based interventions on objectively measured physical activity among adolescents and (ii) to examine accelerometer methods and decision rule reporting in previous interventions. Methods: A systematic search was performed to identify randomized controlled trials targeting adolescents (age: >= 10 years), conducted in the school setting, and reporting objectively measured physical activity. Random effects meta-analyses were conducted to determine the pooled effects of previous interventions on total and moderate-to-vigorous physical activity. Potential moderators of intervention effects were also explored. Results: Thirteen articles met the inclusion criteria, and twelve were included in the meta-analysis. The pooled effects were small and non-significant for both total physical activity (standardized mean difference = 0.02 [95\% confidence interval = -0.13 to 0.18]) and moderate-to-vigorous physical activity (standardized mean difference = 0.24 [95\% confidence interval = -0.08 to 0.56]). Sample age and accelerometer compliance were significant moderators for total physical activity, with a younger sample and higher compliance associated with larger effects. Conclusion: Previous school-based physical activity interventions targeting adolescents have been largely unsuccessful, particularly for older adolescents. There is a need for more high-quality research using objective monitoring in this population. Future interventions should comply with best-practice recommendations regarding physical activity monitoring protocols.},
  language  = {en}
}