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The Relationships Between Capacity and Performance in Youths With Cerebral Palsy Differ for GMFCS Levels
Pei-Chi Ho1, Chia-Hsieh Chang, Mats Granlund
1Department of Pediatric Orthopedics (Ms Ho and Dr Chia-Hsieh Chang), Chang Gung Memorial Hospital, and Graduate Institute of Early Intervention, College of Medicine, Chang Gung University & Department of Physical Medicine and Rehabilitation (Dr Hwang), Chang Gung Memorial Hospital, Linkou, (Dr Hwang), Tao-Yuan, Taiwan; and CHILD (Dr Granlund), Swedish Institute of Disability Research, School of Health Science, Jönköping University, Jönköping, Sweden.
Purpose:
To examine change in, and longitudinal relationships between motor capacity and activity performance across the Gross Motor Function Classification System (GMFCS).
Methods:
Ninety-two youths with cerebral palsy were examined at 2 time points, 1 year apart, using the Gross Motor Function Measure-66 (GMFM-66) for motor capacity, and the Chinese version of the Activities Scale for Kids-Performance Version (ASKp-C) for activity performance. The score changes and capacity-to-performance/performance-to-capacity pathways were explored across GMFCS levels.
Results:
The GMFM-66 scores declined over time in GMFCS levels IV-V while ASKp-C scores increased in GMFCS level I. The correlations for both pathways in GMFCS levels I, III, and IV-V were significant with a higher correlation for performance-to-capacity pathway in GMFCS levels IV-V.
Conclusions:
Longitudinal changes in and relationships between capacity and performance differ between GMFCS levels. The opportunities to perform activities need to be emphasized in GMFCS levels IV-V.
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