Functional Neuroplasticity and Motor Skill Change Following Gross Motor Interventions for Children With Diplegic Cerebral Palsy.
Alicia J Hilderley, F Virginia Wright, Margot J Taylor and 2 others
PMID 36524254WHAT IT FOUND
Children with diplegic cerebral palsy improved advanced motor skills after 6 weeks of strength or sports training.
Brain scans showed that increased activity in the same-side brain hemisphere during non-dominant leg movement was linked to better skill gains. This suggests atypical brain wiring can support learning.
Key findings
01Improvements in advanced gross motor skills were significant from baseline to post-intervention, with a mean increase of 4.57% on the Challenge assessment.
02A shift toward ipsilateral (same-side) brain activation for the non-dominant ankle was negatively correlated with motor skill change, meaning greater ipsilateral activity was associated with better outcomes.
03A smaller brain activation volume in the non-dominant ankle at the end of training predicted continued motor skill gains during the follow-up period.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study had a very small sample size (17 participants) and was not designed to detect differences between the two intervention types. Brain imaging data was missing for some participants due to excessive head movement or inability to complete the scan (e.g., dental braces). The study did not include brain imaging at the long-term follow-up, so it is unclear if brain changes persisted. Data on botulinum toxin use was not systematically collected, which could be a confounding factor, although participants were required to be 4 months post-injection.
Declared interests
The authors declared no potential conflicts of interest. Funding was provided by the American Academy for Cerebral Palsy and Developmental Medicine, Holland Bloorview Kids Rehabilitation Hospital, and the Ontario Brain Institute. Funders were not involved in study design or analysis.
The easy way to misread this
Do not interpret the association between ipsilateral brain activation and motor gains as proof that this specific brain pattern causes improvement. The study is a small pilot with a diverse population, and these findings describe a correlation rather than a confirmed mechanism or a standardized outcome for all children with diplegic cerebral palsy.