Kristiansen, Fredrik, Hilde Mikalsen, and Pål Lagestad. “Schooltime’s Contribution to the Physical Activity Level of Children and Fulfilment of National Health Recommendations for Physical Activity in Norway”. Journal for Research in Arts and Sports Education 5, no. 1 (June 17, 2021). Accessed September 28, 2021. https://jased.net/index.php/jased/article/view/2429.