and the ones worn for highland games and "athletic" endeavors? I was looking at a site that was showing how to properly measure yourself for a kilt and it said the top measurement around your waist should be done at the navel.

I have no experience with how it feels to wear one, but I know I would never wear athletic shorts up at my navel because it would be very uncomfortable. so are there different ways to measure and/or wear them depending on the purpose?