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。
