Relationship between habitual physical activity, motor capacity, and capability in children with cerebral palsy aged 4–5 years across all functional abilities
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Background: Children with cerebral palsy (CP) have lower habitual physical activity (HPA) than their typically developing peers. There are limited studies of HPA in young children with CP under the age of 5 years. Objective: To investigate the relationships between HPA, sedentary time, motor capacity and capability in children with CP aged 4–5 years. Methods: Sixty-seven participants were classified using Gross Motor Function Classification System(GMFCS), assessed for motor capacity using Gross Motor Function Measure (GMFM) and wore accelerometers for three days to measure HPA and sedentary time. Motor capability was assessed using parent-reported Pediatric Evaluation of Disability Inventory (PEDI) functional skills of mobility domain. Mixed-effects regression models were used for analyses. Results: GMFM was positively associated with HPA (mean difference (MD) = 19.6 counts/min; 95%CI = 16.6 to 22.7, p < 0.001) and negatively associated with sedentary time (MD = −0.6%; 95%CI = −0.7 to −0.5, p < 0.001). The PEDI was also positively associated with HPA (MD = 16.0 counts/min; 95%CI = 13.1 to 18.8, p < 0.001) and negatively associated with sedentary time (MD = −0.5%; 95%CI = −0.6 to −0.4, p < 0.001). After stratification for ambulatory status, GMFM and PEDI were associated with HPA and sedentary time in ambulant participants but not in non-ambulant participants. Conclusions: Gross motor capacity and motor capability are related to HPA and sedentary time in ambulant children with CP aged 4–5 years.
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