Effectiveness of a nurse-led mHealth approach in preventing obesity in adolescents: an intervention study

Abstract

Background: Obesity prevention in adolescents is a public health priority given its increasing prevalence and health impact of obesity. Aim: To evaluate the effectiveness of an educational intervention in overweight and obesity using a mHealth app in improving nutritional and sports knowledge, adherence to the Mediterranean diet, physical activity and anthropometric measurements in adolescents. Methods: A randomised controlled trial with parallel groups that included 305 adolescents. The app includes the use of effective behavioural strategies to achieve habit change. Primary outcome variables were nutritional and sports knowledge score (GeSNK), adherence to a Mediterranean diet (KidMed) and level of physical activity (PAQ-A). Results: The study included 154 participants in the mHealth group and 151 in the control group. The level of nutritional and sports knowledge was significantly higher in the mHealth group, 47 points versus 42 points. Adherence to the Mediterranean diet improved in both groups, 9 points in the mHealth group versus 8 points in the control group. Physical activity was statistically higher in the intervention group, 160 minutes/week versus 120 minutes/week. Conclusions: The mHealth intervention showed a significant improvement in the level of nutritional and sports knowledge, adherence to the Mediterranean diet and time spent on physical activity.