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KMID : 1211620080030010011
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Journal of the Korean Society of Physical Medicine
2008 Volume.3 No. 1 p.11 ~ p.20
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The Effects of Closed kinetic chain Exercises of Unstable Floor on the Stability of the Knee Joints of Patients with Anterior Cruciate Ligament Reconstruction
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Kim Yeon-Ju
Park Rae-Joon
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Abstract
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Purpose : This study was to comparison of EMG of an stable exercise group and unstable exercise group on patients who have had anterior cruciate ligament reconstruction(ACL reconstruction).
Methods : The subjects of the study were patients who had no less than 4 weeks after ACL reconstruction and could stand on one leg, and they divided into a control group with 9 patients doing closed kinetic chain exercises on the stable floor and an experimental group with 10 patients doing closed kinetic chain exercises on the unstable floor and in order to compare degrees of the muscle activity of the thigh extensor and flexor was tested each before the exercise, in 3 weeks and 6 weeks after doing exercises by using surface electromyography (Surface EMG). The patients made 3 sets of exercises (10 times per set), each of which consisted of exercises using elastic bands and the squat.
Results : There was statistic significance about the vastus medialis muscle.
Conclusion : It is thought that the closed-chain exercise could be an exercise program through which patients could enhance the muscle activity of the vastus medialis muscle optionally among the quadriceps muscle and the hamstring muscles which should weaken after ACL reconstruction.
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KEYWORD
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Anterior cruciate ligament reconstruction(ACL reconstruction), Closed kinetic exercise, EMG
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