Dynamic Balance Perception and Sensory Integration in Children with Non-Progressive Brain Injury: The Role of Visual...

Area of Science:

• Neuroscience
• Pediatrics
• Biomechanics

Background:

• Children with non-progressive brain injury (NPBI), including cerebral palsy, often exhibit impaired postural control due to issues with vestibular and somatosensory integration.
• While static balance is understood, dynamic anterior-posterior tilt perception and sensory dependencies in NPBI children compared to typically developing (TD) peers are less explored.

Purpose of the Study:

• To investigate the influence of visual input and foot pressure on anterior-posterior dynamic balance perception in children with NPBI.
• To predict the impact on postural control strategies and characterize sensory-motor integration in NPBI children versus TD children.

Main Methods:

• Thirteen children with NPBI and fifteen TD children completed ascending/descending tilt tasks under visual input (VI) and visual blocking (VB) conditions.
• Stopping angles, perception errors, static balance (foot pressure, vestibular sway), and correlations were analyzed using Wilcoxon signed-rank, Mann-Whitney U, and Spearman's rank tests.

Main Results:

• Children with NPBI demonstrated significant differences between VI and VB conditions (p < 0.05), unlike TD children who only differed in ascending trials.
• NPBI children exhibited greater errors in descending tasks and reduced heel pressure, correlating with increased sway and postural displacement.
• Vestibular sway remained unaffected by visual conditions in both groups.

Conclusions:

• Children with NPBI exhibit a greater reliance on visual input for anterior-posterior dynamic balance, particularly during posterior tilts.
• Findings suggest interventions targeting sensory reweighting and enhancing heel contact can improve postural stability in children with NPBI.