지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Objective: This study aims to develop and scientifically investigate the efficacy of the Spine S-curve Reactive Backrest that responds to the spine curvature of the user when seated, and maintains and enhances the natural S-curve of the lower back, thereby helping to relieve fatigue, correct posture and prevent spine deformities.
Background: The focus of current development, design guidelines and/or standards for office chairs is mainly placed on the chair"s dimensions, incline angle, adjusting features and lumbar support. Research and development was called for developing a chair backrest that maintains and improves the S-curve of the full spine.
Method: The Spine S-curve Reactive Backrest was ergonomically designed to maintain correct posture and enhance user comfort. When leaned on, the backrest responds to the user"s spine line and the whole lower back sits closely against the backrest, thereby aligning the user"s lower back and backrest as one to maintain and improve the natural S-curve formation of the spine. In order to evaluate the efficacy of the newly designed chair (new design) and the comparison target (chair), five male college students of standard body type with normal spine curvature were selected as test subjects, and a motion analyzer and electromyography were utilized to measure Scurve and erector spinae muscle activity when seated.
Results: The spine S-curve was better maintained and improved when sitting in the new design than in the comparison chair. Particularly notable was the greater displacement gap of the thoracic spine than the cervical spine, and also that of the lumbar more than the thoracic spine, with the increase of the backrest tilting angle. Furthermore, the electromyogram results showed the new design caused a lower fatigue level of the erector spinae muscles compared to the comparison chair, and also earned a higher preference in the subjective opinion results.
Conclusion: The newly designed chair in this study responds to the user"s spine curvature and maintains and enhances the lower back"s natural S-curve, and thereby relieves fatigue, promotes better posture, and helps to prevent spine deformities better than existing office chairs. There is a need to widely introduce and supply this new design.
Application: The new design is applicable to office and student chairs, and is expected to improve concentration and work efficiency.
Background: The focus of current development, design guidelines and/or standards for office chairs is mainly placed on the chair"s dimensions, incline angle, adjusting features and lumbar support. Research and development was called for developing a chair backrest that maintains and improves the S-curve of the full spine.
Method: The Spine S-curve Reactive Backrest was ergonomically designed to maintain correct posture and enhance user comfort. When leaned on, the backrest responds to the user"s spine line and the whole lower back sits closely against the backrest, thereby aligning the user"s lower back and backrest as one to maintain and improve the natural S-curve formation of the spine. In order to evaluate the efficacy of the newly designed chair (new design) and the comparison target (chair), five male college students of standard body type with normal spine curvature were selected as test subjects, and a motion analyzer and electromyography were utilized to measure Scurve and erector spinae muscle activity when seated.
Results: The spine S-curve was better maintained and improved when sitting in the new design than in the comparison chair. Particularly notable was the greater displacement gap of the thoracic spine than the cervical spine, and also that of the lumbar more than the thoracic spine, with the increase of the backrest tilting angle. Furthermore, the electromyogram results showed the new design caused a lower fatigue level of the erector spinae muscles compared to the comparison chair, and also earned a higher preference in the subjective opinion results.
Conclusion: The newly designed chair in this study responds to the user"s spine curvature and maintains and enhances the lower back"s natural S-curve, and thereby relieves fatigue, promotes better posture, and helps to prevent spine deformities better than existing office chairs. There is a need to widely introduce and supply this new design.
Application: The new design is applicable to office and student chairs, and is expected to improve concentration and work efficiency.
목차
1. Introduction
2. Methods
3. Results
4. Discussion
5. Conclusion
References
참고문헌 (44)
참고문헌 신청
1. [학술지(정기간행물)] - Andersson, B.J. / 1974 / Lumbar disc pressure and myoelectric back muscle activity during sitting II / Studies on an office chair, Scandinavian Journal of Rehabilitation Medicine 6 : 115 ~ 121
2. [기타자료] - ANSI / 2007 / American National Standards Institute and the Human Factors and Ergonomics Society
3. [학술지(정기간행물)] - Basri, B. / 2011 / The vibration of inclined backrests: perception and discomfort of vibration applied normal to the back in the x-axis of the body / Journal of Sound and Vibration 330 (18-19) : 4646 ~ 4659
4. [학술지(정기간행물)] - Basri, B. / 2013 / Predicting discomfort from whole-body vertical vibration when sitting with an inclined backrest / Applied Ergonomics 44 (3) : 423 ~ 434
5. [학술지(정기간행물)] - Bendix, T. / 1996 / What does a backrest actually do to the lumbar spine? / Ergonomics 39 : 533 ~ 542
2. [기타자료] - ANSI / 2007 / American National Standards Institute and the Human Factors and Ergonomics Society
3. [학술지(정기간행물)] - Basri, B. / 2011 / The vibration of inclined backrests: perception and discomfort of vibration applied normal to the back in the x-axis of the body / Journal of Sound and Vibration 330 (18-19) : 4646 ~ 4659
4. [학술지(정기간행물)] - Basri, B. / 2013 / Predicting discomfort from whole-body vertical vibration when sitting with an inclined backrest / Applied Ergonomics 44 (3) : 423 ~ 434
5. [학술지(정기간행물)] - Bendix, T. / 1996 / What does a backrest actually do to the lumbar spine? / Ergonomics 39 : 533 ~ 542
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UCI(KEPA) : I410-ECN-0101-2016-530-001471972