In this post, I mentioned how just segmenting a group by aerobic capacity showed large differences in waist measurements. Since then, I've found a slew of studies that connects abdominal fat with aerobic capacity.
Here's one study that shows men with lower aertobic fitness had higher levels of visceral fat. Here's another study that shows aerobic fitness is an independent predictor of wasit circumference in youths. And here I think is the best study on the subject. For a given body mass index (BMI) or waist circumference, subjects with lower aerobic fitness had higher levels of abdominal fat.
So what's the relationship between aerobic fitness and abdominal fat? I have my ideas in this next post.