Here's a study that looks at the body fat levels of top runners. From distances ranging from 100 meters to 10,000 meters, there was no difference in body fat measurements. Only for marathoners was fat mass less compared to other distances. The article mentions that this is due to the fact that success at the marathon depends heavily on fat metabolism.
Here's a study that looks at the body fat levels of top runners. From distances ranging from 100 meters to 10,000 meters, there was no difference in body fat measurements. Only for marathoners was fat mass less compared to other distances. The article mentions that this is due to the fact that success at the marathon depends heavily on fat metabolism.