Effects of Four-weeks Hypoxic and Altitude Aerobic Training on Android and Gynoid Region Composition of Obese Adolescents

PURPOSE: To explore the effects of aerobic endurance training in altitude or stimulated hypoxia on android and gynoid region composition of obese adolescents.

METHODS:

47 healthy obese adolescents (BMI=30.82~35.93kg/m²) took part in this research. The intervention lasted for four weeks. CG(control group,n=18) lived and trained in plain. HG(hypoxic group,n=18) sleeped in simulated 2300m nomobaric hypoxia 8~10 hours and trained 2 hours under hypoxic environment in daytime. AG (altitude group, n=11) lived and trained in real altitude (2360m). Heart rate was monitored every ten minutes to ensure the intensity was in the target range, which was 40% of the heart rate reserve and determined by the Karvonen equation. Energy intake was 1322 to 2081kcal/day. Body composition was measured by DXA (GE Lunar Prodigy) one day before and after intervention.

RESULTS:

(1)Fat mass(FM) of android region all decreased significantly after intervention. However, FM loss amplitude in two regions hadn’t remarkable difference. (2) Compared with before, lean soft mass (LSM) of android region in CG(3533.20±948.52g vs 3272.23±859.02g, P<0.05) and HG(3287.90±1072.94g vs 3076.31±923.33g, P<0.05) decreased obviously. LSM of gynoid region in CG and HG decreased significantly (CG:8416.65±2226.09g vs7985.58±2067.53g, HG:7819.13±2262.53g vs 7469.40±2108.60g, P<0.05). But LSM of AG in these two regions didn’t show notable change.

CONCLUSION: (1) Four-weeks hypoxic and altitude aerobic training reduce fat mass of android and gynoid region of obese adolescents effectively. No obvious differences appeared in three intervention methods. (2) Plain training and hypoxic training lead LSM of android and gynoid region loss significantly. However, altitude training could prevent the loss.