“…Forty-one obese (BMI > 30) and 43 normal-weight (BMI < 22) adolescents whose ages between 10 and 14 years old volunteered to participate in the study with the consent of their parents. All participants were subject to medical examination by a medical specialist to ensure they were free from any of the following symptoms: (a) obesity associated with any low activity of the thyroid gland, (b) acute and chronic cardiovascular or respiratory diseases such as exercise-induced asthma, (c) liver disease, (d) kidney failure, (e) pulmonary and obesity induced diabetes or juvenile diabetes, and (f) musculoskeletal disorders [20]. To avoid other confounding variables that might affect the outcome of the study, the participants should have not participated in organized sports activities during the past two years, and had not taken any medications or supplements [21].…”