Yes it does. That is why physios get injured people to improve their motor skills by repeated practise.

Physical Development is how someone develops physically.

This includes their fine motor skills, gross motor skills and fine manipulative skills.

The three types of motor skills movement are Gross Motor Skills, Fine Motor Skills, and Balance and Coordination.

what are the fine and gross motor skills ages 16 - 19 years

It has to do with fine motor skills. As a child develops his/her brain is developing and part of that is the development of motor skills. There are gross motor skills like running, walking, throwing a ball, jumping and then there are fine motor skills that involve coloring, holding a pencil, cutting paper, and placing shapes/drawings on paper. The younger the child the less fine motor he/she has and as a child ages the fine motor also develops with practice and brain development.