Table 2.

Inclusion and exclusion criteria

Inclusion criteria

Exclusion criteria

• 13–18 years of age • Undergoing inpatient psychiatric treatment • Within the first 3 weeks of inpatient treatment • Meeting DSM-V and ICD-10 criteria of non-psychotic major depressive disorder assessed by clinician rating with the structured clinical interview ‘Schedule for Affective Disorders and Schizophrenia adapted for school-aged children (present and life-time)’ • Baseline raw-score of at least 40 points in the Children’s Depression Rating Scale-Revised

• Comorbid schizophrenia, personality disorder, autism spectrum disorder, schizoaffective disorder, acute or past psychotic events • Acute suicidality • Current substance abuse • Permanent medication with inherent psychotropic effects including fluoxetine • Non-substituted hypothyroidism • Addison’s disease • Body Mass Index less than 16 kg/m2 • Any contraindication that prevents participation in the exercise intervention • Insufficient knowledge of the German language • Intelligence quotient less than 70

DSM-V Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, ICD-10 10th revision of the International Statistical Classification of Diseases and Related Health Problems