Behavior Change Techniques in Physical Activity Interventions Targeting Overweight and Obese Children and Adolescents: A Systematic Review.

Substantial evidence globally confirms the benefits of physical activity (PA) interventions for the physical and mental health of overweight and obese children and adolescents. However, current research has yet to determine which behavior change techniques (BCTs) are most effective in PA interventions for this population. This systematic review aims to evaluate the application of BCTs in PA interventions for overweight and obese children and adolescents and to identify the most effective BCTs using the promise ratio. Five electronic databases (PubMed, Embase, Cochrane Central, Web of Science, and PsycINFO) were searched up to 31 May 2024, to identify intervention studies meeting the eligibility criteria for promoting PA in the target population. Thirteen studies were included (nine randomized controlled trials and four quasi-experimental studies). The quality of the included studies was assessed using a revised version of the Cochrane Risk of Bias tool and the Risk of Bias in Non-randomized Studies tool. Among the 24 BCTs implemented, the most frequently applied were goal setting (behavior), instruction on how to perform the behavior, feedback on behavior, and self-monitoring of behavior. Action planning, social support, and material incentives showed the most significant potential to promote PA. These findings provide valuable insights for designing future PA interventions for this group, with the potential to improve health outcomes and enhance PA participation among obese children and adolescents.