The present study was done to describe the clinical picture of the movement disabilities of children with cerebral palsy, and to examine the difficulty with which they learn movements in their developmental period. On the basis of a factor analysis, taking as index the degree of attainment of the model-pattern movements of the DOUSA method, in one handred and twenty eight cases of children with cerebral palsy between the ages of 4 and 16, five movement-disability rating scales were constituted. Further, taking these scale scores as index, a cluster analysis was performed, leading to their classification into 7 clusters. For each cluster, materials of the clinical picture of movement disability, as shown by the scale scores; degree of attainment of motor development, as shown by sample scores for quantification methods of the third type; and movement changes in 74 subjects followed up for 3-5 years were arranged. The following were pointed out as related to the problem in learning movement in their developmental period: (1) problems with the acquisition of movements against gravity, especially movement when kneeling, (2) problems of the G-pattern in their developmental process, and (3) problems of cervical control in children with cerebral palsy who were poor in spontaneous movement and of the hypotensive type were pointed out regarding.
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