[arm]

But that is not the general experience of children and teenagers. When I was in High School I learned a scientific article about this. It has a lot to do with the control and manipulations of legs and feet. Your arms are much better trained and can already do much more complete and complex movements than your legs and feet. Give a kid a basketball, he can run around bouncing it, but if you give a kid a soccer ball in the beginning it will be much tougher for him to control it.

I am not saying it is easier or harder to become good at the sport. Just learning the basics to be able to play with friends, etc, and not look like a fool, soccer is tougher in the beginning.