Active for Life Year 5: a cluster randomised controlled trial of a primary school-based intervention to increase levels of physical activity, decrease sedentary behaviour and impro... oleh Debbie A Lawlor, Ruth R Kipping, Emma L Anderson, Laura D Howe, Catherine R Chittleborough, Aida Moure-Fernandez, Sian M Noble, Emma Rawlins, Sian L Wells, Tim J Peters, Russell Jago, Rona Campell