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KMID : 1206220170240010069
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Journal of Korean Academy of Physical Therapy Science
2017 Volume.24 No. 1 p.69 ~ p.78
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The Effect of Muscle performance on knee flexion / extension by chin in exercis
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Lee Cu-Rie
Kim Do-Hyung
Kim Keun-Jo
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Abstract
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Background: The purpose of the present study is to report the effect of muscle performance on knee flexion and extension by chin in exercise.
Methods: This study was Participated in 10 healthy subjects. For conducting the chin-in exercise, subjects are lay down with supine position. Using the rounded towel, subjects was performed contraction of longus colli and longus capatis muscle by push the towel. Chin-in exercise was conducted 3 times a day, 4 times a week for 4 weeks. By using the Biodex system4, We measured absolute muscle strength, relative muscle strength, total exercise quantity and average rate of production in knee flexion and extension. The data was analyzed by the repeated-measure ANOVA for comparing before, after exercise 2 weeks, after exercise 4 weeks changes of factors.
Results: After chin-in exercise, there was significant difference of before, after 2 weeks and 4weeks results in absolute muscle strength, relative muscle strength, total exercise quantity, average rate of production, agonist/antagonist ratio(p<.05).
Conclusion: As a results of this study, chin-in exercise may help to improve muscle ability of knee joint activation and knee joint action performance.
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KEYWORD
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Chin in exercise , Biodex , Knee joint muscle performance
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