Eli5: Is there a reason roller skates and roller blades don’t have spring shocks?

Question

I was thinking about this the other day…skateboards are flexible, bike tires are bouncy. Why aren’t there “performance” skates with shocks? Wouldn’t that be better for your knees?

In: 2620

Answer 1

There are different hardnesses of wheels. The softer wheels will be slower and require more effort to get or keep moving but will absorb more shock. You could also get gel insoles I suppose.