A ’tag-game’ involves practicing anticipation and reaction during an agility exercise. A tag game itself it fun, but you can also add a game element where points can be earned. This will enhance motivation of the children. It’s integrated in the regular football practice as the performance goal of is exercises is to train the children to create space, move on time to avoid coming too close to other player, keeping speed and avoiding opponent once you have passed the opponent. In the MoveHealthy project, not only is checked whether the child appropriately executes the task from a football perspective (appropriate agility skills), but also hów this skill is performed from a motor control perspective. Are forces well absorbed (e.g. soft landing) and are lower extremities well aligned (e.g. smalle amounts of movement in the frontal plane)?