背景與目的：過去的研究顯示，正常人可以因不同語言指令而調整顯現出不同的姿勢調整，但對於腦性麻痺兒童在不同語言指令下的姿勢調整的研究則很缺乏。所以，對於腦性麻痺兒童是否能在兩種不同要求下做不同的姿勢調整則仍屬未知。因此，本研究的目的為：（一）探討在兩種不同語言指令下腦性麻痺兒童的姿勢調整，（二）探討腦性麻痺兒童和正常兒童在姿勢調整的調節能力的不同。方法：藉由就近取樣的方式徵召了56名有行走能力的兒童（名腦性麻痺兒童和名正常兒童）。所有的測試者被按順序重複在兩種不同的速度下（在最舒服的速度下和越快越好），各測了十五次功能性伸手向前。姿勢調整是用壓力中心(Center of Pressure)來量化。結果：腦性麻痺兒童和正常兒童一樣可以根據不同的要求速度而產生不同的速度伸手向前及不同的前後及左右的壓力中心線移動。相對於正常兒童，腦性麻痺兒童的前後的壓力中心線移動明顯的較慢且不直。結論：腦性麻痺兒童能夠依外在的要求而自己調節他們的姿勢調整，但是在功能性伸手向前時，他們仍難以快速且筆直的移動他們的壓力中心線，特別在前後的方向。

Background and Purposes: Children with cerebral palsy (CP) frequently experience problems in maintaining effective standing balance during their daily activities. Although previous studies showed that postural adjustments could be modified by different task commands in healthy adults, limited study had examined changes of postural adjustments in children with CP under different verbal instructions. Therefore, it was unknown whether postural adjustments of children with CP were modified based upon the requirements of the tasks. The purposes of this study were (1) to explore the difference of postural adjustments in children with CP between two different task commands, and (2) to explore the regulatory difference of postural adjustments between children with CP and children with typical development (TD). Methods: A sample of convenience with 56 ambulatory children, 28 children with CP and 28 children with TD, participated in this study. The subjects were repeatedly tested in sets of fifteen trials at two different reach speeds: reach at a comfortable speed and reach as fast as possible, sequentially in a block fashion. Postural adjustments were qualified by center of pressure (COP) measurements. Results: The findings indicated that children with CP, as well as their peers with TD, were able to modulate to their anterior-posterior (A-P) and medial-lateral (M-L) COP excursions based upon different commands. Children with CP exhibited slower and less straight A-P excursion than the children with TD. Conclusion: These findings suggest that children with CP were able to modulate their postural adjustments based upon the different task requirements. However, they had difficulty in producing a quick and straight COP excursion during the functional reach tasks.