*2.1. Participants*

Participants in the current study were recruited from the Obesity and Cardiovascular Risk Unit at General University Hospital Consortium of Valencia (CHGUV) and Pediatric Endocrinology Department at the University Clinical Hospital "Lozano Blesa" (HCULB) in Zaragoza (Spain). Data were collected between November 2019 and September 2021 as a part of the Eat4HealthyLife research project, a multicentered study that explores potential risk factors of obesity and eating disorders (EDs). Eligible criteria considered were the following: aged between 8 and 16 years old, diagnosis of obesity (BMI Z-score > 2 standard deviations according to the scales of their reference group by age and sex), and not having received or not currently receiving obesity treatment in our outpatient clinic. None of the subjects included suffer from any other disease or eating disorder. The sample consisted of 70 children and adolescents with obesity. The mean age of the sample was 12.36 (SD = 2.19), and 56.2% were boys.
