A randomized controlled trial of dance exergaming for exercise training in overweight and obese adolescent girls

BackgroundStructured exergaming with prescribed moderate intensity physical activity has reduced adiposity among adolescents. The extent to which adolescents reduce adiposity when allowed to self-select intensity level is not known. ObjectiveThe objective of the study was to examine the influence of exergaming on adolescent girls' body composition and cardiovascular risk factors. MethodsThis randomized controlled trial assigned 41 overweight and obese girls aged 14 to 18years to group-based dance exergaming (36h over 3months) or to a self-directed care control condition. Body size and composition were measured by anthropometry, dual-energy X-ray absorptiometry [%fat and bone mineral density {BMD}] and magnetic resonance imaging. Cardiovascular risk factors included blood pressure, cholesterol, triglycerides, glucose and insulin. ResultsAttrition was 5%. Using analysis of covariance controlling for baseline value, age and race, there were no significant condition differences. Per protocol (attended >75%), the intervention group significantly decreased abdominal subcutaneous adiposity and increased trunk and spine BMD (ps<0.05). Per protocol (>2600 steps/session), the intervention group significantly decreased leg %fat and decreased abdominal subcutaneous and total adiposity (ps<0.05). ConclusionExergaming reduced body fat and increased BMD among those adolescent girls who adhered. Further research is required before exergaming is recommended in clinical settings.