Motor performance and higher associative cortical networks in adolescents with neonatal hypoxic-ischaemic encephalopathy treated with therapeutic hypothermia.
Gustaf Håkansson, Mimmi Eriksson Westblad, Maria Örtqvist and 3 others
PMID 40545796WHAT IT FOUND
Adolescents treated with therapeutic hypothermia for neonatal hypoxic-ischaemic encephalopathy showed significantly lower motor performance scores than controls.
Brain imaging revealed increased connectivity between motor and attention networks during movement tasks, suggesting the brain works harder to compensate for motor difficulties rather than having a simple structural deficit.
Key findings
01Children with neonatal hypoxic-ischaemic encephalopathy treated with therapeutic hypothermia scored significantly lower on all subdomains and the total score of the Movement Assessment Battery for Children (MABC-2) compared to controls.
02Functional MRI showed that in the hypoxic-ischaemic encephalopathy group, aiming and catching performance was associated with stronger connectivity between the default mode network and the somatomotor network, a pattern not seen in controls.
03The study participants excluded those with moderate or severe cerebral palsy, meaning the findings apply only to children with mild or no motor disability.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The sample size was small, with only 35 children in the hypoxic-ischaemic encephalopathy group and 21 controls, limiting the statistical power to detect subtle brain-behaviour relationships. The study excluded children with moderate to severe cerebral palsy, so the findings cannot be generalized to the most impaired children in this population. There was a significant difference in age between the two groups at both the MRI scan and the motor assessment, which may have influenced the brain connectivity results. The physiotherapist assessing motor performance was not blinded to group allocation, which could introduce bias in the MABC-2 scores.
Declared interests
The study was funded by Stiftelsen Promobilia. No other conflicts of interest were declared.
The easy way to misread this
Do not interpret the increased brain connectivity as a sign that the children are performing better or have a superior neural strategy. The authors suggest this pattern reflects a compensatory mechanism where the brain recruits additional networks to achieve motor performance that is still significantly worse than controls.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →