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http://dx.doi.org/10.12674/ptk.2016.23.1.011

Gender Comparison of Muscle Activity and Strength in Gluteus Medius and Quadriceps and Knee Valgus Angle During Controlled Single-Leg Squat in Individuals With Patellar Femoral Pain Syndrome  

Yoon, Tae-lim (Dept. of Physical Therapy, College of Health Sciences, Cheongju University)
Kim, Ki-song (Dept. of Physical Therapy, College of Biohealth Sciences, Hoseo University)
Publication Information
Physical Therapy Korea / v.23, no.1, 2016 , pp. 11-19 More about this Journal
Abstract
Background: Investigation in gender differences of kinetics and kinematics for individuals with patellar femoral pain syndrome (PFPS) was not sufficiently performed. Objects: The purpose of this study is that whether there is a difference depending on gender from muscle activity and strength and knee valgus angle during controlled single-leg squat which is widely used as clinical movement test for the patient with PFPS. Methods: 20 young adults (10 men, $20.0\pm}2.1$years; 10 women, $20.4{\pm}2.1$years) with PFPS were voluntarily recruited in this study. Muscle activity and strength and knee valgus angle were collected during single-leg squat. Independent t-test and Mann-Whitney test were used to compare the differences between groups of male and female. Results: Rectus femoris (t=-2.204, p=.041) and vastus medialis oblique (t=-2.151, p=.045) muscle activity of women were significantly higher than male group. Normalized muscle strength of hip and knee muscles showed a significant difference between men and women (p<.05). Valgus angle of the knee in women (t=-2.450, p=.025) were increased significantly than men. Conclusion: The therapist would consider the characteristics of these gender differences during performing movement test, exercise, and education for the individuals with PFPS.
Keywords
Electromyogram; Knee exercise; Video analysis;
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