Answer: Motor expertise
Explanation: Those researches are also trying to find out and determine how and why some young people or children are more advanced performers. For example, the younger ones are having the same skills as the adults but they are more successful with them which makes them more advanced.
That is one of the many reasons why they are comparing motor expertise in order to determine those kind of situation.
For good performance, it is important to have good skill and experience because it is not the most safer sport and it can get very dangerous.
Surely, this sport is different from the other ones.
