Minimal detectable change for spatial and temporal measurements of gait after incomplete spinal cord injury.
Minimal detectable change for spatial and temporal measurements of gait after incomplete spinal cord injury.
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DOI：
10.1310/sci1803-273
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发表时间：
2012-01-01
影响因子：
2.9
通讯作者：
Behrman, Andrea Louis
中科院分区：
文献类型：
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作者：
Nair, Preeti Mohandas;Hornby T, George;Behrman, Andrea Louis
背景和目的：不完全性脊髓损伤（ISCI）后，使用时空（ST）参数量化的个体步态偏差往往是治疗干预的目标。我们研究的目的是建立可靠性和反应性的ST参数的步态后ISCI使用仪器化的走道（GaitMat II）。方法：16个人与ISCI参加了这项研究。每例受试者以自选（SS）步行速度完成至少2次步行试验。测定了8个ST参数的组内相关系数模型2，1（ICC 2，1）和95%置信区间（CI）、测量标准误（SEM）、SEM百分比变化（SEM%）、最小可检测变化（MDC）和MDC百分比变化（MDC%），这些参数包括步长、单肢支撑和双肢支撑时间（受损程度不同的肢体）、节奏、结果：所有ST参数的重测一致性良好（0.84-0.99）。SEM%范围为8%至29%，而MDC%范围为21%（踏频）至80%（双肢支撑时间）。MDC%值相对较高（5-12 MDC%）的更多与较少受损limb.DISCUSSION：SEM%的结果表明，小到中度的变化，需要表明一个真实的变化，在行走性能。肢体之间MDC%值的差异表明，参数的变异性可能是敏感的运动impairment.CONCLUSION水平：在ISCI，不同的步态，平衡，或力量训练计划的个人可以进行比较和对比的基础上，在ST参数的利益量化和有意义的变化。
BACKGROUND AND PURPOSE: Gait deviations in individuals after incomplete spinal cord injury (ISCI) that are quantified using spatiotemporal (ST) parameters are often targeted during therapeutic interventions. The purpose of our study was to establish reliability and responsiveness of ST parameters of gait after ISCI using an instrumented walkway (GaitMat II).METHODS: Sixteen individuals with ISCI participated in the study. Each subject completed at least 2 walking trials at self-selected (SS) walking speed. Intraclass correlation coefficients model 2, 1 (ICC2,1) with 95% confidence intervals (CIs), standard error of measurement (SEM), SEM percent change (SEM%), the minimal detectable change (MDC), and the MDC percent change (MDC%) were determined for 8 ST parameters including step length, single limb support, and double limb support time for the more and less impaired limb, cadence, and speed.RESULTS: Excellent test-retest agreement (0.84-0.99) was observed in all ST parameters. SEM% ranged from 8% to 29%, while MDC% ranged from 21% (cadence) to 80% (double limb support time). MDC% values were relatively higher (5-12 MDC%) for the more versus less impaired limb.DISCUSSION: SEM% results indicate that small to moderate changes were needed to indicate a real change in walking performance. Differences in MDC% values between limbs indicated that variability in parameters might be sensitive to level of motor impairment.CONCLUSION: In individuals with ISCI, different gait, balance, or strength training programs can be compared and contrasted based on a quantifiable and meaningful change in the ST parameter of interest.