| Keywords |
Obese adolescents; Accumulated exercise; High-intensity aerobic exercise; ANGPTL6; Cardiorespiratory fitness |
| Abstract |
This study compared the effects of high-intensity aerobic exercise, implemented over eight weeks in two formats?accumulated exercise (AE) and continuous exercise (CE)?on body composition, cardiorespiratory fitness, metabolic health, liver function, and serum ANGPTL6 levels in obese adolescents. A total of 29 participants were randomly assigned to the AE(n = 10), CE(n = 10), or control (C) group(n = 9). Pre- and post-intervention assessments included body measurements, V ? O2peak evaluation, and blood biochemical analyses. The results showed significant reductions in body mass index (BMI) and body fat percentage (p < .05), with V ? O2peak significantly improved in the AE group compared to the control group (p < .05). Low-density lipoprotein cholesterol (LDL-C) was significantly reduced after the intervention (p < .05), and serum ANGPTL6 levels were significantly lower in the AE group than in the CE group (p < .05). Meanwhile, alanine aminotransferase (ALT) levels were significantly higher in the AE group than in the CE group (p < .05), suggesting differential hepatic responses depending on the exercise modality. These findings indicate that accumulated high-intensity aerobic exercise may be a more effective intervention strategy than continuous exercise for improving cardiorespiratory fitness and regulating hepatic metabolic stress in obese adolescents. |