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Purpose: This study was conducted to determine how stimulation using Russian current changes isokinetic exercise performance of quadriceps muscle and its antagonist muscles. Methods: Subjects were 20 20-year-old healthy adults who were instructed in the flexion to extension of knees in angular velocity 60°/ sec and 180°/sec using a Biodex (Biodex system 3). We measured the difference in muscle performance between the Russian current stimulated at the same time during the flexion to extension of knees and not stimulated. Results: The results showed that when Russian current stimulation was applied at the angular velocity 60°/sec, the flexed and extended muscles and the angular velocity 180°/sec increased significantly, but the peak torque of flexing muscles at the angular velocity 180°/sec did not increase. Conclusion: These findings suggest that Russian current stimulation with isokinetic exercise of the knee joint could affect the quadriceps muscle and its antagonist muscle performance of muscle strength and endurance.

The Effects of Isokinetic Exercise on Knee Joint Combined Russian Current Stimulation