Fine Muscle Control May Continue Developing Into Teen Years09/27/13
FRIDAY, Sept. 27 (HealthDay News) -- Children's development of
fine motor control continues longer than previously believed and
isn't exclusively linked to brain development, according to two new
Fine motor control refers to the ability to make slight, precise
movements, such as using the fingers to pick up and handle small
objects. It had been believed that improvements in fine motor
control continued only until ages 8 to 10. But researchers found
that this development can continue until age 16.
This means that there is a longer length of time to use therapy
to improve the motor-control skills of children with
neurodevelopmental disorders such as cerebral palsy.
"These findings show that it's not only possible but critical to continue or begin physical therapy in adolescence," Francisco Valero-Cuevas, a professor of biomedical engineering at the University of Southern California, said in a university news release.
Valero-Cuevas was the corresponding author of both studies, one
of which will appear Oct. 1 in the
Journal of Neurophysiologyand the other Sept. 18 in the
Journal of Neuroscience.
"We find we likely do not have a narrow window of opportunity in early childhood to improve manipulation skills, as previously believed, but rather developmental plasticity lasts much longer and provides opportunity throughout adolescence," said Valero-Cuevas, who also is a professor of biokinesiology and physical therapy. "This complements similarly exciting findings showing brain plasticity in adulthood and old age."
Valero-Cuevas invented a tool that allows for more precise
measurement of fine motor control. The tool uses springs of varying
stiffness and length that are set between plastic pads. A person's
fine motor control is determined by the ability to compress the
increasingly awkward spring devices.
The new tool was used to test 130 children, aged 4 to 16, with
typical development of fine motor control. The tests revealed that
even 16-year-olds were continuing to hone this skill.
The researchers also found that this ability was tied not just
to brain maturation, but also to a child's muscular
The U.S. National Library of Medicine has more about
fine motor control.
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