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KMID : 1035420150030010071
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Journal of The Korean Society of Integrative Medicine
2015 Volume.3 No. 1 p.71 ~ p.80
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The Effects of Quadriceps Femoris Muscle activation by Closed and Open kinetic chain Exercises
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Kim Hyoung-Su
Kim Eun-Young
Han Jin-Won
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Abstract
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Purpose: The purpose of this study was to compared the muscle activities of vastus medialis, vastus lateralis, rectus femoris in open kinetic chain and closed kinetic chain.
Methods: Subjects of the study were 30 adults students. They were divided into 2 group, one for open kinetic chain and other for closed kinetic chain of extension, flexion, the maximum extension for vastus medialis, vastus latarealis, rectus femoris muscle activation.
Results: Rectus femoris increased open kinetic chain group about all posture and vastus medialis increased open kinetic chain group about the maximum extension and flexion. and vastus lateralis increased open kinetic chain group about the maximum extension and flexion.
Conclusion: Muscle activation are at the highest with the open kinetic chain in vastus medialis, vastus lateralis, rectus femoris. probably steady exercise thinked for open kinetic chain and closed kinetic chain.
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KEYWORD
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quadriceps muscle, open kinetic chain, closed kinetic chain
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