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Measurement of Lumbar Flexion Moment when Changing Seat Condition using Separated Seat
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논문 기본 정보

Type
Proceeding
Author
Dong Hyun Kim (Yonsei University) Hyung Joo Kim (Hyundai Central Advanced Research & Engineering Institute) Seong Guk Kim (Yonsei University) Ye Eun Song (Yonsei University) Young Keun Cho (Hyundai Central Advanced Research & Engineering Institute) Han Sung Kim (Yonsei University)
Journal
Ergonomics Society of Korea 대한인간공학회 학술대회논문집 2017 대한인간공학회 춘계학술대회
Published
2017.4
Pages
502 - 506 (5page)

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Method
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Measurement of Lumbar Flexion Moment when Changing Seat Condition using Separated Seat
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Objective: The aim of this study was to investigate the effects of driving posture changed by seat condition including seat heights, seat angles, and either with or without lumbar support in separated seat on lumbar flexion moments. Background: Recent trends in auto industry has led the higher vehicle seat comfort, which is one of the most important factors in selecting a car. Researchers have suggested an ideal posture for drivers to reduce load on L5/S1, there has been no equipment found for measuring lumbar flexion moment in real time as driving posture changes. Method: All 25 participants (between the ages of 27 and 46, 73.5 ± 11.5 ㎏, 1.74 ± 0.11 m) should have never suffered from musculoskeletal disorders and any kind of orthopedic surgery around the lumbar region. All participants took a seat on the seat, which was adjusted for seat back angle and height with lumbar support in order to induce various driving postures. Reaction forces were collected with force plates and the data of marker position were collected by using an 3D motion analysis system. Results: Seat back reaction force results showed a significant difference in seat back angle with absence lumbar support. (P＜0.05) Lumbar flexion moments results showed that there was significant difference in seat back. (P＜0.05) There was no significant difference in seat height and lumbar support. Conclusion: These results indicate that the seat back angle may be the main cause of decreased driver’s lumbar flexion moment. However, other car seat adjustment factors for lumbar flexion moment does not have any significance (P＞0.05) Application: The results of the new method to evaluation of seat comfort using separated seat might help to determine the manufacturing of car seat and chair and evaluation of seat comfort.
#Lumbar flexion moment #Separated seat #Driving posture #Seat comfort

Contents

ABSTRACT
1. Introduction
2. Method
3. Results
4. Conclusion
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