An investigation was done by a group of doctors fo find the interrater reliabilty of peak torgue and total work values obtained with isokinetic measures of knee flexion and extension. A group of 16 students from the Medical College of Georgia were used in the investigation, 8 males, and 8 females.
The students were evaluated by different examiners using a standardized isokinetic measurement protocol. The students were assigned randomly to participate in a test sequence determined by a 4x4 Latin square. Peak torque and total work values were obtained for the concentric measures of knee extension and flexion. Intraclass correlation coefficients and error measurments were used to find the reliability for each test condition. In their test correlation coefficient values ranged from .90 to .95 for total work.
The results of their investigation demonstrate that the reliable measures of isokinetic muscle performance of knee extension and flexion may be obtained by clinicians with vauied experience when following a standardized measurement protocol.