Development of the Early Activity Scale for Endurance for Children With Cerebral Palsy
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PURPOSE: The Early Activity Scale for Endurance (EASE) was developed as a clinically feasible measure of endurance for physical activity in young children with cerebral palsy (CP). Validity and reliability were evaluated. METHODS: Participants included 414 children with CP and 106 without CP. Parents completed the EASE, an 11-item self-report measure. For construct validity, EASE scores were compared by Gross Motor Function Classification System levels (0 assigned for children without CP), age, and gender. In subgroups, convergent validity with the 6-minute walk test and test-retest reliability with a second EASE were evaluated. RESULTS: EASE scores differed significantly by Gross Motor Function Classification System, but not by age or gender. The EASE correlated moderately (rs = 0.57) with the 6-minute walk test. Test-retest reliability was high, intraclass correlation (2,1) = 0.95. CONCLUSION: The EASE has acceptable psychometrics for use in practice and research to estimate endurance for physical activity in young children with CP.
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