Evaluating the long-term effectiveness of a structured telehealth obesity program in children and adolescents: A retrospective matched-control study

Abstract

Background

Childhood obesity is a growing global health crisis, driven by poor diet, reduced physical activity, and psychosocial distress. The COVID-19 pandemic amplified these factors, contributing to rising BMI and impaired health-related quality of life (HrQoL). Telehealth offers a promising, scalable modality to deliver multimodal obesity care. This study evaluated the long-term effectiveness of a structured pediatric telehealth intervention compared to historical in-person treatment.

Methods

This retrospective cohort study analyzed data from 237 children and adolescents with obesity treated at a single academic center. Between 2020 and 2022, 117 participants received a 12-month structured lifestyle intervention via telehealth. A historical cohort (n = 120; 2017–2019) received the same intervention in person. Clinical outcomes were assessed at baseline and after 12 months; the telehealth group was additionally followed up at 24 and 36 months. Primary outcome was change in BMI standard deviation score (BMI SDS). Secondary outcomes included physical fitness (6-min walk test), insulin resistance (HOMA index), lipid profile, dietary behavior (K-FFL), eating regulation (K-FEV), and HrQoL (KINDL-R).

Results

Both groups achieved significant reductions in BMI SDS after 12 months, with sustained improvements in the telehealth group through 36 months (Δ = −0.18; p < 0.05). Physical performance and HOMA index improved in both cohorts. Telehealth participants showed greater improvements in healthy dietary behavior, cognitive appetite regulation, and Health-related quality of life HrQoL, especially in emotional and family domains. No adverse events occurred; adherence exceeded 85 %.

Conclusion

A structured telehealth lifestyle intervention is safe, effective, and sustainable for pediatric obesity management. These findings support telehealth as a clinically viable and sustainable model for pediatric obesity care, recognizing that both weight reduction and weight stabilization may contribute to improved long-term outcomes.