Don't know exactly what you mean--I've only ever run about 70.
I did notice that after riding them (in the hallway so I can balance
when necessary)--after I got a smooth spin going and could stay
up that I was very conscious of how the bike was tracking--but somehow
without being focused directly on it--then I rode on the street--I could
see how it improves one's balance a lot. It also kicked my ass--
soaked through a shirt in about 10 minutes. . .maybe I'm
out of shape.