Dynamic stability during walking in children with and without cerebral palsy.
James B Tracy, Drew A Petersen, Jamie Pigman and 6 others
PMID 31226600WHAT IT FOUND
High-functioning children with CP did not show less anterior stability than controls during walking.
They showed more lateral stability on the non-dominant limb, but this may not protect them from trips.
Key findings
01Children with CP and typically developing children had similar anterior stability before foot strike and at mid-swing across preferred, fast, and dual-task walking.
02When bearing weight on the non-dominant limb, children with CP had 1.3 percent of body height more lateral stability than controls.
03The CP group scored 1.9 points lower on the 56-point Pediatric Balance Scale, but only three scored below the age-specific cut-off near 53.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The CP group was high-functioning: all could walk without assistive devices, 11 were GMFCS level I, 4 were GMFCS level II, and only 3 scored below the Pediatric Balance Scale cut-off near 53. The sample was small, with 15 children with CP and 14 controls, so the findings may not apply to more impaired children or to all children with CP. Stability was measured during walking in a laboratory over 10 meters, not during real-world falls or unexpected perturbations. The study measured initial stability during walking, not the response to actual perturbations. Limb dominance was defined by kicking preference, not by a clinically determined affected limb, because the study physical therapist could not definitively identify a more affected limb for many CP participants. The dual task may not have been demanding enough across ages 5 to 12, so the lack of group differences with dual task may reflect task difficulty rather than stability.
Declared interests
The authors declared no financial or personal conflict of interest. The article is listed as supported by NIH extramural research and non-U.S. government research.
The easy way to misread this
Do not conclude that children with CP are generally more stable or at lower fall risk. The study found no anterior stability difference, and the lateral difference was only on the non-dominant limb in a high-functioning sample.