Snow C J, Blacklin K
Physiotherapy Department, Health Sciences Centre, Winnipeg, Manitoba, Canada.
Arch Phys Med Rehabil. 1992 Jan;73(1):15-21.
The test-retest reliability of a specific test protocol for the measurement of peak torque of the knee flexors using a Kin/Com dynamometer was evaluated. The maximum voluntary torque generated by the left knee flexors during constant velocity resisted-muscle shortening (RMS) and muscle lengthening (RML) was measured in a sitting position in 11 healthy women with no history of knee pathology. Each subject performed two tests at each of two velocities (30 degrees/sec and 180 degrees/sec) in a single session. All subjects repeated these four tests one week later. A test consisted of four complete RMS/RML cycles through a range of 65 degrees. The peak torque generated from each test was used to measure test-retest reliability. All data were gravity compensated. Intraclass correlation coefficients (ICCs) were calculated from ANOVA tests for RML and RMS at both velocities. The within sessions ICCs ranged from .94 to .98 for 30 degrees/sec and from .92 to .97 at 180 degrees/sec. The ICCs between sessions were generally lower and ranged from .79 to .90 for 30 degrees/sec, and from .75 to .88 for 180 degrees/sec. It is concluded that using these test protocols, peak torques for both RMS and RML can be measured with a high degree of reliability at two commonly used velocities.
对使用Kin/Com测力计测量膝屈肌峰值扭矩的特定测试方案的重测信度进行了评估。在11名无膝关节病变史的健康女性中，于坐姿下测量了左膝屈肌在等速抗阻肌肉缩短（RMS）和肌肉拉长（RML）过程中产生的最大自主扭矩。每位受试者在单次测试中于两种速度（30度/秒和180度/秒）下各进行两次测试。所有受试者在一周后重复这四项测试。一次测试包括通过65度范围的四个完整的RMS/RML循环。每次测试产生的峰值扭矩用于测量重测信度。所有数据均进行了重力补偿。通过对两种速度下的RML和RMS进行方差分析测试计算组内相关系数（ICC）。30度/秒时组内ICC范围为0.94至0.98，180度/秒时为0.92至0.97。两次测试之间的ICC通常较低，30度/秒时范围为0.79至0.90，180度/秒时为0.75至0.88。得出的结论是，使用这些测试方案，可以在两种常用速度下高度可靠地测量RMS和RML的峰值扭矩。
