Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium. vivstapp.vanstappen@ugent.be. Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium. Research Foundation Flanders (FWO), Egmontstraat 5, 1000, Brussels, Belgium. Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium. Department of Nutrition and Dietetics, Harokopio University, School of Health Science & Education, Athens, Greece. Clinic of Paediatric Endocrinology, Medical University Varna, Varna, Bulgaria. Finnish Institute for Health and Welfare, Helsinki, Finland. GENUD (Growth, Exercise, Nutrition and Development), University of Zaragoza, Zaragoza, Spain. Department of Biochemistry and Molecular Biology II, Center of Biomedical Research (CIBM), Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Granada, Granada, Spain. CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain. Debreceni Egyetem (UoD), University of Debrecen, Debrecen, Hungary.