The Journal of Neurophysiology and the Journal of Neuroscience published research on 130 typically developing children ages 4 to 16 using a new tool to precisely measure fine motor control. The findings indicated that even the 16 year old teenagers were continuing to improve fine motor skills. This ability was not only tied to brain maturation but also to the child's muscular development. The researcher, Francisco Valero-Cuevas - a professor of biokinesiology and physical therapy, stated that physical therapy should be continued or just started during adolescence.
Reference: Motor control development continues into teens. Retreived from the web on 10/15/13 from Health24 at http://www.health24.com/Mental-Health/Brain/News/Development-of-motor-control-continues-until-16-20130930.