Andersson, N.; Herö, J.; Lundgren, L.; Brorsson S. (2012). Increasing Activation of th Gluteus Medius using a New Training Device. Journal of Sport and Health Research, 4(3):311-320.



Objective: The gluteus medius (GM) is a strong abductor and medial rotator of the thigh, and plays an important role in stabilizing the pelvis and controlling the knees during athletic activities. Weakness in the GM can have adverse effects on performance and increase the risk of lower extremity injuries. The aim of this study was to validate a new training device by comparing the activation of the GM when performing a squat with and without the device. Methods: Thirty-two female athletes (mean age 20 ± 3) performed body weight squats on and off the device, while surface electromyography was recorded bilaterally on the GM. Results: All test subjects were able to perform the squat and to activate the GM. The activation of the GM was significantly higher when using the new device than when performing squats on the floor (Z=-4.9, P<0.001). Correlation tests between a complete sequence of three squats and one selected repetition revealed that activation was consistent throughout the exercise (right GM: rs=0.93, P<0.001, left GM: rp=0.92, P<0.001). No differences in activation were found between the right and left GM when squatting on the device. Conclusion: The newly developed training device increases muscle activity in the GM during squats. Moreover, the results showed that squatting on the device activates the left and right side of the body equally, and that the GM was activated during the whole hip flexion exercise. This information and the new training device can be used in training programs to improve stabilization of the pelvis and lower extremities during dynamic exercises.



Female athletes, electromyography, rehabilitation, pelvis, lower extremity, dynamic exercises.


Journal of Sport and Health Research - 2009