Between-school variation in physical activity, aerobic fitness, and organized sports participation: A multi-level analysis

Peter L. Kristensen, Line G. Olesen, Mathias Ried-larsen, Anders Grøntved, Niels Wedderkopp, Karsten Froberg, Lars B. Andersen
  • Journal of Sports Sciences, September 2012, Taylor & Francis
  • DOI: 10.1080/02640414.2012.723818

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