[jaggederest]

> a lot of people can run at their lactate threshold for about an hour.

I say this as someone incredibly out of shape, but I doubt any of those people are wiped out by running to the bus stop ;)

> I suspect there are even more basic adaptations one needs to be able to do these very short activities for which a more trained individual can complete anaerobically.

Yeah absolutely, I found it very interesting that weight training is universal in sprinters, it makes sense as metabolic training as well as the actual muscle growth.