The Effects of Elbow Joint Angle Changes on Elbow Flexor and Extensor Muscle Strength and Activation

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概要

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• [Purpose] This research investigated the relationship between elbow joint angle and elbow flexor and extensor strength and activation, taking into consideration the length-tension tension curve of the muscle. [Subjects] There were 30 research subjects in total, 15 male and 15 female college students from Busan S University who had no functional disabilities that might affect measurement of muscle strength and muscle activation, and none had they experienced any damage in their upper extremities or hands. [Methods] The elbow joint angles were positioned at angles of 56°, 70° and 84°, and then muscle strength and activation were compared. Repeated measures ANOVA was used for statistical analysis, and the paired t-test was used to identify the difference between each angle. We used the SPSS for windows (ver. 21.0) statistical software and a significance level of α=0.05. [Results] The results showed that muscle strength and activation of the biceps was highest when the joint was placed at 56°. On the other hand, for the triceps, the result was highest when the joint angle was placed at 84°. [Conclusion] The tests confirmed that muscle strength and activation were highest at the joint angle at which the muscle was stretched to 20% more than the resting position in concentric contraction.

• The Society of Physical Therapy Scienceの論文

著者

• Lee Jaeseok

  Department Of Biological Sciences Konkuk University

• Shin Dongho

  Department Of Mechanical Engineering Korea University Of Technology And Education

• Han Dongwook

  Department Of Physical Therapy College Of Medical And Life Science Silla University

• Choi Sunkoung

  Department of Social Welfare, College of Humanities and Social Sciences, Silla University, Republic of Korea

• Yang Jeongok

  Division of Physical Education, College of Medical and Life Science, Silla University, Republic of Korea

• Lee Joongsook

  Division of Physical Education, College of Medical and Life Science, Silla University, Republic of Korea

• Lee Bomjin

  Division of Physical Education, College of Medical and Life Science, Silla University, Republic of Korea

• Kim Seounghoon

  Department of Physical Therapy, College of Medical and Life Science, Silla University

• Lee Younghyun

  Department of Physical Therapy, College of Medical and Life Science, Silla University

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• The Effects of Elbow Joint Angle Changes on Elbow Flexor and Extensor Muscle Strength and Activation

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