Bolek, O.; Grzelak, O.; Kuśmierczyk, W.; Sordyl, K.; Szczepański, P.; Rogulski, K.; Majkowska, M.; Fengier, M.; Kącikowska, J.; Trzaskowski, J. High-Intensity Interval Training and Its Effects on Cardiorespiratory Fitness and Body Mass Index in Children and Adolescents With Overweight or Obesity: A Narrative Review. J Educ Health Sport 2026, 89, 69806.