Examination of the relationship between respiratory muscle strength, postural control, functional exercise capacity, and daily living activities in individuals with spastic cerebral palsy: A case-control study.

BACKGROUND AND OBJECTIVE: Respiratory dysfunction is a prevalent but underrecognized problem in individuals with spastic cerebral palsy (CP). Despite extensive research on postural control, functional capacity, and activities of daily living (ADL), the role of respiratory muscle strength in these functional domains remains largely unexplored. This study aimed to examine whether respiratory muscle strength is associated with postural control, functional exercise capacity, and activities of daily living (ADL) in individuals with spastic CP. METHODS: In this cross-sectional study, 29 individuals with spastic cerebral palsy and 29 typically developing peers were evaluated. Respiratory muscle strength was assessed using maximal inspiratory (MIP) and expiratory (MEP) pressures. Postural control (Trunk Control Measurement Scale (TCMS), Pediatric Berg Balance Scale (PBBS)), functional skills (Pediatric Disability Assessment Inventory (PEDI)- Functional Skills Section (FSS)), and exercise capacity (2MWT) were recorded. RESULTS: = 0.44-0.88). MIP explained 32% of trunk control, 30% of functional skills, and 39% of exercise capacity. Discussion: Respiratory muscle strength is a key determinant of trunk stability, balance, functional capacity, and ADL performance in spastic CP. Systematic assessment and incorporation of respiratory muscle training into rehabilitation may enhance functional outcomes. CLINICALTRIALS.GOV IDENTIFIER: NCT05682079.