Abstract:

BACKGROUND: Increased studies use the isokinetic dynamometry to evaluate the wrist strength. But no intra- and interrater reliability of isokinetic muscle strength test in wrist joint has been reported.
OBJECTIVE: To observe the peak torque and total work generated by the wrist flexion and extension muscles in healthy youth during isokinetic muscle strength test.
METHODS: Twenty-eight healthy subjects were randomly divided into two groups. Each subject in the two groups was tested twice at 60(°)/s and 180(°)/s angular velocities. In the first session, subjects in group A were tested by rater A and subjects in group B were tested by rater B. In the second session, all subjects were tested by rater B.
RESULTS AND CONCLUSION: The intrarater reliability intraclass correlation coefficients of peak torque and total work values for wrist flexion and extension ranged from 0.65 to 0.95 at 60(°)/s and 180(°)/s angular velocities. The interrater reliability intraclass correlation coefficients ranged from 0.70 to 0.95. The peak torque and total work of isokinetic muscle strength test for wrist joint displayed good to excellent intra- and interrater reliability at low and high angular velocities in healthy youth.