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Linear and Nonlinear Measures of Postural Control in a Toddler With Cerebral Palsy: Brief Report
Samuel R Pierce1, Athylia C Paremski, Julie Skorup
1Division of Rehabilitation Medicine (Drs Pierce and Prosser and Ms Paremski), The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Physical Therapy (Dr Skorup), The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Biomechanics (Dr Stergiou and Mr Senderling), University of Nebraska at Omaha, Omaha, Nebraska; Department of Pediatrics (Dr Prosser), University of Pennsylvania, Philadelphia, Pennsylvania.
Insights
This study tracked postural control and motor skills in a child with cerebral palsy during physical therapy. Improvements were observed in balance and gross motor function, with standing showing less predictable movements than sitting.
Area of Science:
- Pediatric Physical Therapy
- Neurorehabilitation
- Motor Control Research
Background:
- Cerebral palsy (CP) presents significant challenges to motor development, impacting postural control and functional mobility.
- Understanding the progression of postural control is crucial for optimizing physical therapy interventions in children with CP.
Observation:
- This case study monitored a young child with cerebral palsy throughout a physical therapy program.
- Assessments included posturography (sitting and standing), the Gross Motor Function Measure-66 (GMFM-66), and the Early Clinical Assessment of Balance (ECAB).
Findings:
- The child achieved independent sitting and subsequently independent standing during the study period.
- Significant improvements were noted in GMFM-66 and ECAB scores, indicating enhanced motor function and balance.
- Postural control measures in standing exhibited higher variability and lower predictability compared to sitting, potentially reflecting the early stages of acquiring upright stability.
Implications:
- Findings suggest that increased movement variability in standing may be characteristic of early skill acquisition in children with CP.
- Further research is warranted to determine optimal levels of movement variability and predictability for effective motor learning and functional outcomes in this population.
Purpose:
The purpose of this study was to describe changes in linear and nonlinear measures of postural control along with motor outcomes in a young child with cerebral palsy.
Summary Of Key Points:
Posturography in sitting and standing, the Gross Motor Function Measure-66 (GMFM-66), and the Early Clinical Assessment of Balance (ECAB) were performed prior to, during, and after physical therapy. The child demonstrated independent sitting throughout the study and developed independent standing during the study. He made improvements in the GMFM-66 and ECAB throughout the study. Higher average values were found in all linear and nonlinear measures in standing when compared to sitting, which may indicate less predictable movement due to less experience with standing.
Recommendations For Clinical Practice:
Greater variability and lower predictability in postural control likely reflect early stages of skill acquisition. Research is needed to understand the optimal levels of movement variability and predictability.
