Thompson Patricia, Beath Tricia, Bell Jacqueline, Jacobson Gabrielle, Phair Tegan, Salbach Nancy M, Wright F Virginia
Bloorview Research Institute, Toronto, Canada.
Dev Med Child Neurol. 2008 May;50(5):370-6. doi: 10.1111/j.1469-8749.2008.02048.x. Epub 2008 Mar 18.
Short-term test-retest reliability of the 10-metre fast walk test (10mFWT) and 6-minute walk test (6MWT) was evaluated in 31 ambulatory children with cerebral palsy (CP), with subgroup analyses in Gross Motor Function Classification System (GMFCS) Levels I (n=9), II (n=8), and III (n=14). Sixteen females and 15 males participated, mean age 9 years 5 months (SD 3y 7mo, range 4y 3mo-18y 2mo). Twenty had spastic diplegia, while the others had another form of CP. Retest interval varied from 1 to 4 weeks (mean 10.6d [SD 6.4]). Intraclass correlation coefficients (ICCs) estimated reliability. The 10mFWT ICC was 0.81 (95% confidence interval [CI] 0.65-0.90) across participants, and >0.59 in GMFCS subgroups (95% CI lower bound >0.01). The 6MWT ICC was 0.98, and >0.90 in GMFCS subgroups (95% CI lower bound >0.64). Bland-Altman plots indicated bias towards higher 6MWT retest distances in GMFCS Level I. Minimum detectable change (95% CI) was 61.9, 64.0, and 47.4m for the 6MWT within GMFCS Levels I, II, and III respectively. The conclusion is that while the 10mFWT showed inadequate test-retest reliability given its wide 95% CI, the 6MWT demonstrated good to excellent reliability. Investigation of the need for a practice walk when administering the 6MWT with children in GMFCS Level I is recommended to establish their fastest pace.
对31名能行走的脑瘫儿童进行了10米快速步行测试(10mFWT)和6分钟步行测试(6MWT)的短期重测信度评估,并按粗大运动功能分类系统(GMFCS)的I级(n = 9)、II级(n = 8)和III级(n = 14)进行了亚组分析。16名女性和15名男性参与,平均年龄9岁5个月(标准差3岁7个月,范围4岁3个月至18岁2个月)。20名患有痉挛性双瘫,其他则患有其他形式的脑瘫。重测间隔为1至4周(平均10.6天[标准差6.4])。组内相关系数(ICC)用于评估信度。所有参与者的10mFWT的ICC为0.81(95%置信区间[CI] 0.65 - 0.90),GMFCS亚组中>0.59(95% CI下限>0.01)。6MWT的ICC为0.98,GMFCS亚组中>0.90(95% CI下限>0.64)。Bland - Altman图表明GMFCS I级中6MWT重测距离有偏高的偏差。GMFCS I级、II级和III级中6MWT的最小可检测变化(95% CI)分别为61.9、64.0和47.4米。结论是,鉴于10mFWT的95% CI较宽,其重测信度不足,而6MWT表现出良好至优秀的信度。建议对GMFCS I级儿童进行6MWT测试时,研究是否需要进行预步行以确定其最快速度。