Electromyography comparison of normal chair-desk system and assistant          chair-desk system on fatigue

Moon-Seok Kwon; Sang-Ho Lee; Ik-Rae Cho; Yu-Mi Won; Mi-Kyung Han; Kon-Nym Jung; Jae-Hee Lee; Ji-Hyoung Chin; Jae-Hun Rho; Ju-Yeon Kim; Jae-Bong Yang; Jae-Kui No; Tae-Geun Park; Taek-Kyun Lee; Hyo-Joo Park; Sam-Jun Lee; Kyoung-Seok Yoo; Suh-Jung Kang; Se-Jeong Kwon; Mi-Ae Shin; Hu-Nyun Kim; Hyung-Sik Kahn; Min-Jung Kim; Tae-Young Kim

doi:10.1589/jpts.27.3171

Original Article

Electromyography comparison of normal chair-desk system and assistant chair-desk system on fatigue

Moon-Seok Kwon, Sang-Ho Lee, Ik-Rae Cho, Yu-Mi Won, Mi-Kyung Han, Kon-Nym Jung, Jae-Hee Lee, Ji-Hyoung Chin, Jae-Hun Rho, Ju-Yeon Kim, Jae-Bong Yang, Jae-Kui No, Tae-Geun Park, Taek-Kyun Lee, Hyo-Joo Park, Sam-Jun Lee, Kyoung-Seok Yoo, Suh-Jung Kang, Se-Jeong Kwon, Mi-Ae Shin, Hu-Nyun Kim, Hyung-Sik Kahn, Min-Jung Kim, Tae-Young Kim

Author information

Moon-Seok Kwon
Division of Sports Science, College of Science and Technology, Konkuk University, Republic of Korea
Sang-Ho Lee
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Ik-Rae Cho
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Yu-Mi Won
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Mi-Kyung Han
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Kon-Nym Jung
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Jae-Hee Lee
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Ji-Hyoung Chin
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Jae-Hun Rho
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Ju-Yeon Kim
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Jae-Bong Yang
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Jae-Kui No
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Tae-Geun Park
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Taek-Kyun Lee
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Hyo-Joo Park
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Sam-Jun Lee
Department of Physical Education, College of Social Science, Tong Myong University, Republic of Korea
Kyoung-Seok Yoo
Department of Sports Science, College of Life Science and Nano Technology, Hannam University, Republic of Korea
Suh-Jung Kang
Department of Exercise and Health Sciences, College of Natural Sciences, SangMyung University, Republic of Korea
Se-Jeong Kwon
College of Sports Science, Major of Recreation and Leisure Sports, Chung-Ang University, Republic of Korea
Mi-Ae Shin
College of Creative Future Talent, Daejin University, Republic of Korea
Hu-Nyun Kim
College of Creative Future Talent, Daejin University, Republic of Korea
Hyung-Sik Kahn
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Min-Jung Kim
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea
Tae-Young Kim
Department of Physical Education, College of Education, Hankun University of Foreign Studies: 107 Imun-ro, Dongdaemun-gu, Seoul 130-791, Republic of Korea

Keywords: Chair-desk system, Fatigue, Posture

JOURNAL FREE ACCESS

2015 Volume 27 Issue 10 Pages 3171-3175

DOI https://doi.org/10.1589/jpts.27.3171

Details

Abstract

[Purpose] This study was designed to test the effects of the Assistant Chair-Desk System (ACDS), which can reduce the forward tilt of the neck and trunk and the level of fatigue during long lasting study in the sitting position. [Subjects] Fourteen middle school students and 14 college students of mixed gender participated in this study. [Methods] Fatigue level, the trapezius muscle, and the forward tilt angle of the head and trunk as well as distance factors were assessed before after using a normal chair-desk system (NCDS) and the ACDS for 120 minutes. [Results] There was an interaction effect in the angle and length of the neck from the sitting posture changes after 2 hours of studying using the NCDS and ACDS. There were also significant differences in the fatigue levels, hip joint angles and the lengths from the head according to the main effects of the chair-systems. [Conclusion] The studying position while using the ACDS was determined to prevent significant fatigue levels of the muscle and body, provide support to the head, by limiting the forward movement of the neck, and prevent forward tilt of the neck and trunk, by enabling the target point and gaze to be closer to the horizontal direction.

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