A comparison of different quadriceps femoris isometric strengthening methods in healthy young women

Abstract

Purpose: This study was planned to compare the effectiveness of high voltage pulsed galvanic (HVPG) stimulation, Russian current and isometric exercise on quadriceps femoris (QF) isometric muscle strength in healthy young women. Methods: Forty-six healthy young women were included in the study. Before and after the training, the dominant side QF isometric muscle strength of participants was assessed with the isokinetic dynamometer. The peak torque and average torques of the participants were recorded after the test. The training was planned as HVPG current group (n=16), Russian current group (n=15) and isometric strengthening group (n=15). All treatments were performed under physiotherapist supervision for a total of 15 sessions for three days a week for five weeks. Results: The quadriceps isometric muscle strength was significantly increased in all groups in terms of peak torque and average torque values after training compared to pre-training values (p<0.05). No statistical difference was found between the groups when the peak torque and average torque delta values were compared (p>0.05). Conclusion: The highest rate of change belongs to the HVPG group in terms of increasing the QF isometric muscle strength. Therefore, we recommend using it in clinical practice. © 2020 Turkish Physiotherapy Association. All rights reserved.