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\section{Introduction}   It is well established that peadiatric obesity is associated with numerous health implication in later life (FREEDMAN ET AL., 2007). Despite evidence to suggest that the prevalence of obesity has plateaued in recent years with the UK (BODDY ET AL., 2010) and internationally (ROKHOLME ET AL., 2010), there is no evidence of a decline, and a high proportion of children remain at risk of morbidity. Physical activity and sedentary behaviour are key variables implicated in childhood obesity due to their influence on energy balance (ROWLAND 2004). Current physical activity guidelines recommend children between 5 and 18 years of age to engage in at least 60 minutes moderate-to-vigorous physical activity every day /cite@techreport{ \cite@techreport{  author = {Department of Health, Physical Activity Health Improvement and Protection},  title = {Start Active, Stay Active: A report on physical activity from the four home countries’ Chief Medical Officers},  institution = {Department of Health },