Therefore, the objective of the ASK-study is to investigate the effects on academic performance of 60 minutes of daily physical activity during one school year. Furthermore, due to the complexity in the relationship between physical activity and academic performance, it is necessary to identify possible mediating and moderating variables as cognitive performance, quality of life (QoL), classroom behavior, motor skills and motivation. Also, we aim to investigate changes in risk factors related to NCDs and factors that influence NSDs, such as physical activity, sedentary behavior and health-related fitness.