目的：(1)比較腦性麻痺兒童與一般兒童坐/站最大荷重阻力；(2)探測坐／站10次最大荷重阻力(10RM)、6次最大荷重阻力(6RM)、1次最大荷重阻力(1RM)測試之再測信度及分析10RM、6RM、1RM阻力之關係。方法：選取14位一般兒童（平均年齡111.4±16.9個月），14位痙攣型腦性麻痺兒童（平均年齡94.7±25.9個月），於間隔一星期內以荷重背心進行2次坐／站最大荷重測試，並將其阻力除以體重得標準化荷重阻力(NxRM)，分析不同日再測信度及3種NxRM之相關。結果：腦性麻痺兒童之NxRM僅為一般兒童之一半。兩組兒童之1RM、6RM、10RM之再測信度方面，一般兒童之組內相關係數(intraclass correlation coefficient)值為0.88 - 0.96(p<0.001)，腦性麻痺兒童為0.94 -0.97(p<0.001)。兩組兒童之N10RM、N6RM與N1RM皆有顯著相關。在一般兒童其N10RM、N6RM與N1RM 比值為0.77、0.87，在腦性麻痺兒童其比值為0.56、0.75。結論：CP兒童荷重坐／站阻力明顯低於一般兒童，兩組兒童於荷重坐／站測試下所得2次之1RM、6RM、10RM皆有高的再測信度。荷重坐/站測試之效度與荷重坐／站訓練之效果如何尚待進一步研究。

Purposes: To examine the test-retest reliability and to compare the performance of a functional-strength test, the loaded sit-to-stand test (LSTST), in children without disability (ND) and children with cerebral palsy (CP). Methods: Fourteen ND children (mean age 111±17 months) and 14 children with CP (mean age 96±27 months) were included. The child being tested wore the weighted jacket with various weights to repeat sit-to-stand as many times as possible to obtain the data for the Repetition Maximum (xRM) in a standardized procedure with a 5- to 7-day interval. Each load was normalized with the body weight of the child to obtain the Normalized xRM (NxRM). Results: The NxRM for LSTST for children with CP was only half of the value for ND children. The test-retest reliability of LSTST was good for both groups (ICC=0.88-0.96). Conclusions: Children with CP are weaker than ND children from the results of LSTST. The LSTST is a reliable test for both groups. The validity of LSTST and the effectiveness of the loaded STS strengthening programs need further investigation.