Obese teen girls might benefit more from aerobic exercise than resistance training

... that, while both exercise groups saw health benefits, the girls who had performed aerobic exercise but not weight training lost visceral and liver fat, while improving their insulin sensitivity. These results weren't seen in the other two groups. ...

http://www.battlediabetes.com/news/exercise/obese-teen-girls-might-benefit-more-from-aerobic-exercise-than-resistance-training