Lifestyle behaviour changes represent the foundation of pediatric weight management and are usually promoted through individual and/or group-based counseling to encourage the adoption and maintenance of health lifestyle behaviours including nutritional intake, sleep and physical activity. Consensus on the need for comprehensive, behavioural interventions exists, but the nature of these interventions vary considerably. The intensity of the intervention (i.e. number of contact hours) may be a key determinant of efficacy, but little detail on the characteristic of these contact hours for optimal delivery is currently available.