Pierce Samuel R, Lauer Richard T, Shewokis Patricia A, Rubertone Joseph A, Orlin Margo N
Research Department, Shriners Hospitals for Children in Philadelphia 19140, and Institute for Physical Therapy Education, Widener University, Chester, PA, USA.
Arch Phys Med Rehabil. 2006 May;87(5):697-702. doi: 10.1016/j.apmr.2006.01.020.
To assess test-retest reliability of the peak resistance torque and slope of work methods of spasticity measurement of the knee flexors and extensors in children with cerebral palsy (CP).
Test-retest reliability study.
Pediatric orthopedic hospital.
Fifteen children with CP.
Knee extensor and flexor spasticity was assessed with an isokinetic dynamometer using passive movements at 15 degrees, 90 degrees, and 180 degrees/s taken 1 hour apart.
Peak resistive torque and work were calculated. The relative and absolute test-retest reliability was calculated by using intraclass correlation coefficients (ICCs) and Bland-Altman plots, respectively.
Relative reliability was good (ICC>.75) for slope-of-work and peak resistance torque measurements at a velocity of 180 degrees/s, whereas reliability of peak torque measurements was decreased (ICC<.51) at slower velocities for both muscle groups. The 95% limits of agreement of Bland-Altman plots contained most data points for both methods, but the width of the limits of agreement were wide.
The measurement of spasticity of the knee extensors and flexors in children with CP using peak-resistance torque at 180 degrees/s and the slope of work method has acceptable relative test-retest reliability. However, the absolute reliability of spasticity data should be considered cautiously.
评估脑瘫（CP）患儿膝部屈伸肌痉挛测量中峰值阻力扭矩和做功方法斜率的重测信度。
重测信度研究。
儿科矫形医院。
15名脑瘫患儿。
使用等速测力计，在15度、90度和180度/秒的被动运动下，间隔1小时评估膝部伸肌和屈肌痉挛情况。
计算峰值阻力扭矩和做功。分别使用组内相关系数（ICC）和Bland-Altman图计算相对和绝对重测信度。
对于180度/秒速度下的做功斜率和峰值阻力扭矩测量，相对信度良好（ICC>.75），而对于两个肌肉群，在较慢速度下峰值扭矩测量的信度降低（ICC<.51）。Bland-Altman图的95%一致性界限包含了两种方法的大多数数据点，但一致性界限的宽度较宽。
使用180度/秒的峰值阻力扭矩和做功方法测量CP患儿膝部伸肌和屈肌痉挛具有可接受的相对重测信度。然而，应谨慎考虑痉挛数据的绝对信度。
