目的：採討輕度痙攣型雙邊麻痺兒童由坐至站功能性肌力與行走功能的相關性。方法：研究對象為29名5到12歲輕度痙攣型雙邊麻痺兒童。以坐站荷重測試與皮脂肪夾量測得標準化坐站一次最大荷重，標準化坐站一次最大荷重即為由坐至站功能性肌力之指標；行走功能參數包括臨床可用之自選行走速度及生理耗能指數。以電子心跳偵測儀量測休息及行走期間的心跳數，以碼錶量測行走10公尺的自選行走速度，並據以換算得行走的生理耗能指數等變項。以皮爾森積差相關係數分析標準化坐站一次最大荷重與行走速度、生理耗能指數之相關性（單尾α=.05）。結果：標準化坐站一次最大荷重與自選行走速度(r=0.37)及行走時生理耗能指數之倒數(r=0.39)有顯著相關(p<0.05)，即標準化坐站一次最大荷重量愈大的兒童，其行走速度愈快而行走時能量使用的效率也愈好。結論：輕度痙攣型雙邊麻痺兒童由坐至站功能性肌力與行走功能有相關，但僅低度相關。

Purpose: to investigate the relations between sit-to-stand functional muscle strength and walking function in children with spastic diplegia (SD). Methods: Twenty-nine children with SD, aged 5-12 years were recruited in North Taiwan. A newly developed functional muscle strength test, the loaded sit-to-stand test was used to obtain the normalized one repetition maximum (NSTS1RM). The NSTS1RM was the index of sit-to-stand functional muscle strength. The variables of walking function included the self-selected walking speed and the physiological cost index (PCI). The self-selected walking speed was measured during 10 meters' walking by stop watch. The PCI was calculated from the walking speed and the change between the resting heart rate and walking heart rate that were recorded by Polar Sport Tester. Pearson product-moment correlation coefficient (one-tailed, α=0.05) tests the correlation between NSTS1RM and 2 variables of walking function. Results: The NSTS1RM correlated significantly with walking speed (r=0.37) and the reciprocal of PCI that represented the energy efficiency (r=0.39) (p<0.05). The children with SD who loaded heavier in loaded sit-to-stand test could walk faster with higher energy efficiency. Conclusion: The sit-to-stand functional muscle strength significantly but weakly correlated with walking function in children with mild SD.