Dual task impact on functional mobility and interaction of functional level and balance in patients with Duchenne muscular dystrophy.

Dystrophin, a protein crucial for various brain regions governing higher-order functions like learning and memory is notably absent in individuals with Duchenne muscular dystrophy (DMD). This absence of dystrophin in the brain is believed to underlie cognitive challenges in DMD. Cognitive and motor challenges observed in DMD could potentially hinder the execution of dual tasks. Is there a significant correlation between dual-task performance, functional mobility, and balance in children with DMD? The study included 28 participants (14 DMD, 14 typical development). Timed Up and Go (TUG) test results were recorded for single and dual-task conditions (motor-motor, cognitive-motor). Functional level was assessed using Motor Function Measurement-32 (MFM-32), Brooke Upper Extremity Scale, and Vignos Scale. Balance was evaluated using Balance Master System and Pediatric Functional Reach Test (PFRT). Significant differences in TUG test scores across conditions were observed in both DMD and typical development groups (p < 0.05). Children with DMD exhibited longer completion times compared to typical development children (p < 0.05). Among children with DMD, there was a significant correlation between TUG scores in different task conditions and balance assessment (p < 0.05, r = 0.571 to −0.819). Lower MFM-32 scores in DMD children were correlated with worse TUG performance across conditions (p < 0.05, r = 0.586 to −0.868). This study sheds light on the multifaceted nature of dual-tasking challenges in individuals with DMD, thereby contributing to a deeper understanding of the implications for rehabilitation strategies. [Display omitted] • Dual-task conditions deteriorated functional mobility of children with DMD and typical development. • The cognitive-motor dual-task has the greatest impact on functional mobility. • DMD population shows lower single- and dual-task performance than healthy children. • In DMD, better balance associated with improved single- and dual-task performance. • In DMD, high functional level correlated with improved single- and dual-task performance. [ABSTRACT FROM AUTHOR]