Physical Activity and Metabolic Alterations in Children and Adolescents Across Different Weight Groups: A Systematic Review. - Leppänen, Marja H.; Hintikka, Jukka E.; Wijnant, Kathleen; Haapala, Eero A.; Lakka, Timo A.; Vanhaecke, Lynn; Viljakainen, Heli (European Journal of Sport Science, 2026)