| Summary: | 碩士 === 臺北市立體育學院 === 身心障礙者轉銜及休閒教育研究所 === 99 === Purpose：To examine the effect of seat surface inclination on BOCCIA ball throwing movement in children with cerebral palsy and normal children. Methods：Ten children with cerebral palsy (CP) and ten normal children (HS) participated in this study. Each participant underwent Pediatric reaching test and BOCCIA ball throwing test while sitting on 15° anterior inclined, 0°, and 15° posterior inclined seat surface to assess the effect of seat surface inclination on sitting postural stability and throwing movement in these children. An electromagnetic motion analysis system was used to record throwing movement while a force plate was placed under each participant’s feet to record the movement of center of pressure during throwing. A finger switch was used for determining the instant of ball picked up and ball release. A tape measure was used to measure the throwing performance. Two-way ANOVA with Bonferroni post hoc tests were performed to compare the differences in all variables among different seat surface inclinations and between the two groups of the participants. Results：The seat surface inclination significantly affect sitting postural stability in children with CP. In Boccia ball throwing, the HS group had less cervical flexion movement while sitting on the anterior inclined surface compared to the horizontal surface. In the horizontal inclined seat surface, the CP group had less trunk rotation movement than the HS group. In the anterior and posterior inclined seat surface, the CP group had greater shoulder abduction movement than the HS group. In the horizontal inclined seat surface, the CP group had less elbow flexion movement than the HS group. In the movement of the center of pressure (COP) on the force plate, the HS group had less COP movement range in the medial-lateral direction while sitting on the anterior inclined seat surface compared to the horizontal inclined seat surface. The CP group had greater peak vertical ground reaction force while sitting on the anterior inclined seat surface compared to the posterior inclined and horizontal seat surface. There were no significant differences in the movement time and throwing performance among the three seat surfaces in both groups of the participants and between the two groups in each seat surface. Conclusion: Sitting postural stability in children with CP was affected by the inclinations of the seat surface. However, most of the Boccia ball throwing movements and performance in children with CP were not significantly affected. In normal children, Boccia ball throwing movements were partially affected by the inclinations of the seat surface.
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