Children get much of their physical exercise at school and play times can be important for this, especially during the longer breaks (Fairclough and others 2008). Although children are more active during longer breaks it has been found that the longer they played the less active they became. Children were more active when playing ball games, had free access to non- fixed equipment and where there were suitable markings on the ground. When teachers were managing or observing the playground, children’s activity was reduced (Parrish and others 2009)
