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Asian J Kinesiol > Volume 17(4); 2015 > Article
The Official Journal of the Korean Academy of Kinesiology 2015;17(4):49-56.
DOI: https://doi.org/10.15758/jkak.2015.17.4.49    Published online November 30, 2015.
The Difference of Electromyographic Activity of Lower Extremity among Weight-bearing Exercises in Patients with Patellofemoral Pain Syndrome.
Keun-Ok An, Ji-Hoon Cho
Dankook University
Shingyeong University
Correspondence:  Ji-Hoon Cho,
Email: jhchopro@hanmail.net
Received: 7 October 2015   • Accepted: 27 November 2015
Abstract
PURPOSE
The purpose of this study was to investigate analysis of difference of electromyographic activity on rectus femoris(RF), vastus medialis oblique(VMO), vastus lateralis(VL) and gluteus medius(GM) on type of weight-bearing in patients with patellofemoral pain syndorme.
METHODS
The subjects of this study were 13 female patients with patellofemoral pain syndorme 16 case(Right 8 case, Left 8 case) who are 20 - 30 years. The subjects of the study were rectus femoris, vastus medialis oblique, vastus lateralis and gluteus medius attached EMG electrodes to measure the electromyographic activity during weight-bearing exercise. Weight-bearing exercise was conducted half squat(HS), wall half squat(WHS), pillow wall half squat(PWHS) and single lim wall squat(SLWS). The investigator measured and analyzed the factors related to iEMG of muscle and electromyographic activity ratio during four type weight-bearing exercise the experiment collected data through measures of one-way ANOVA with the statistical significance level set at α=.05.
RESULTS
Weight-bearing exercise effective way to increase muscle activation of the VMO during weight-bearing eccentric contraction was shown to SLWS, weight-bearing exercise effective way to increase muscle activation of the GM were to PWHS. Second, weight-bearing exercise effective way to increase muscle activation of the GM during weight-bearing isometric contraction was shown to WHS and PWHS. Third, the weight-bearing concentric contraction of muscles during four kinds of effective weight-bearing exercise to increase muscle activation of specific muscles were not.
CONCLUSIONS
This study the results of the four type weight-bearing exercise according to the class of muscle contraction in the muscle activity with PFPS patients through each muscle was confirmed that the most efficient forms of exercise.
Keywords: patellofemoral pain syndrome, muscle contraction type, weight-bearing, jhchopro@hanmail.netelectromyographic activity
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