Schmartz Annick C, Meyer-Heim Andreas D, Müller Roland, Bolliger Marc
Institute of Human Movement Sciences and Sport, ETH Zurich, Zurich, Switzerland.
Disabil Rehabil Assist Technol. 2011;6(1):29-37. doi: 10.3109/17483107.2010.509884.
To evaluate the feasibility and reliability of a novel stiffness assessment tool implemented in the driven gait orthosis Paediatric Lokomat; to investigate the influence of single robotic-assisted gait training (RAGT) on muscle stiffness in children with cerebral palsy (CP).
Ten children with spastic CP conducted a single standard RAGT session and stiffness was assessed before and after the RAGT. Nine of the ten subjects were tested twice on the same day to investigate test-retest reliability, intraclass correlation coefficients (ICCs), standard error of measurement (SEM), coefficient of variation of the method error (CV(ME)) and resistive torques during passive leg movements (stiffness in Nm/°) were calculated.
ICCs showed high reliability (0.83-0.97) for hip and knee movements. SEM and CV(ME) indicated 0.028-0.085 Nm/°, 9.5-23.0% of test-retest variability in hip and 0.018-0.064 Nm/°, 13.3-43.5% in knee measures. Using the assessment tool, a significant decrease in muscle stiffness in participants, especially in children with high levels of muscle tone, could be shown after a single session of RAGT.
The assessment tool L-STIFF is a feasible tool for automated measurement of stiffness in children with CP, but it is not sensitive enough to record small changes in muscle tone.
评估在驱动式步态矫形器小儿Lokomat中实施的新型刚度评估工具的可行性和可靠性；研究单次机器人辅助步态训练（RAGT）对脑瘫（CP）患儿肌肉刚度的影响。
10名痉挛型CP患儿进行了单次标准RAGT训练，并在训练前后评估刚度。10名受试者中的9名在同一天进行了两次测试，以研究重测可靠性，计算组内相关系数（ICC）、测量标准误差（SEM）、方法误差变异系数（CV(ME)）以及被动腿部运动期间的阻力矩（刚度，单位为Nm/°）。
ICC显示髋关节和膝关节运动具有高可靠性（0.83 - 0.97）。SEM和CV(ME)表明，髋关节重测变异性为0.028 - 0.085 Nm/°，9.5 - 23.0%；膝关节测量值为0.018 - 0.064 Nm/°，13.3 - 43.5%。使用该评估工具，可以显示在单次RAGT训练后，参与者的肌肉刚度显著降低，尤其是肌张力较高的儿童。
评估工具L-STIFF是一种用于自动测量CP患儿刚度的可行工具，但它对记录肌张力的微小变化不够敏感。
