Measurements of spasticity are divided into two groups, subjective and objective methods. The examples of the subjective methods are Ashworth scale and Brunnstrom stage and there are various measures in the objective quantification of spasticity: biomechanical analyis(pendulum test, ramp and hold test), electrophysiologic testing(dynamic multichannel EMG, gait analysis, H reflexes, F waves).

The aims of this study are to identify variability and reliability of Cybex pendulum test, to compare the results of pendulum test and electrophysiologic tests of involved leg with those of univolved side, and to identify correlation of subjective measure of spasticity with objective measures in 25 hemiplegic patients with varing degrees of spasticity.

We conclude that:

1) Cybex pendulum test is a reliable method for evaluation of muscle spasticity.

2) Relaxation index, swing time and angular velocity of pendulum test, H/m ratio, F amplitude and F/M ratio are useful parameters for documenting spasticity in hemiplegic patients(especially RI is the most reliable parameters of all).

3) Subjective measure of spasticity(Modified Ashworth scale) correlates well with cybex pendulum test(especially with RI).

4) H amplitude correlates well with Brunnstrom stage 2&3, and also 3&4.