Comparative Study of High Intensity Interval Training and Endurance Training in Juvenile Obesity

Inclusion Criteria: * age between 8 and 12 years * Body mass index (BMI) = 95th percentile, according to the First National Health and Nutrition Examination Survey * no pharmacological treatment * no evidence of metabolic, hormonal, orthopedic, and cardiovascular disease at the time of the study's commencement * no participation in any regular exercise training program (except physical education classes, two days a week) at least 6 months before the commencement of the study and throughout the protocol. Exclusion Criteria: * non-obese participants * physically active participants * participants with cardiovascular diseases or any other condition that could preclude the participation in the the exercise training program