A 6-week diet and exercise intervention alters metabolic syndrome risk factors in obese Chinese children aged 11–13 years

PurposeA randomized, controlled trial was conducted to determine whether a 6-week low calorie diet and aerobic exercise intervention could alter metabolic syndrome (MetS) risk factors in pre-pubescent obese Chinese children.MethodsThe subjects were randomized into diet and exercise (DE) and control (C) groups. The DE group ingested 1600–2000 kcal/day adjusted to each participant's basal metabolic rate, and engaged in high-volume aerobic exercise (6 days/week, twice daily, for 3 h per session) for 6 weeks. A total of 215 obese children between the ages of 11 and 13 years were recruited into the study, with 167 subjects (DE, n = 95; C, n = 72) completing all phases. Pre- and post-study measures included body weight, body mass index, waist circumference, body fat percentage, blood pressure and other MetS-related markers from fasting blood samples (serum cholesterol, triglycerides, insulin, and glucose).ResultsCompared to controls, the DE subjects experienced significantly reduced levels for all outcome markers (p < 0.05), except for fasting blood glucose in boys (p = 0.09).ConclusionAn intensive, 6-week diet and exercise intervention had favorable effects in altering MetS risk factors in obese Chinese children aged 11 to 13.