I've read at Mark Rippetoe's website that a long distance running is where catabolic process prevail, and muscle/strength gain is where anabolic process prevail.
Therefore, they should somehow impede each other. The organism can adapt and become good at one thing at a time: either strength or endurance. But that's just a speculation.
What's going on in reality?
Looks like triathletes are both good in endurance and in strength and they have pretty good hypertrophy of muscles. So, is the concept above wrong?