@article{Béghin:87562,
      author        = "Béghin, L. and Vanhelst, J. and Drumez, E. and Migueles,
                       J.H. and Androutsos, O. and Widhalm, K. and Julian, C. and
                       Moreno, L.A. and De Henauw, S. and Gottrand, F.",
      title         = "{Gender influences physical activity changes during
                       adolescence: The HELENA study}",
      year          = "2019",
}