Prediction of Postural Sagging Observed During Driving in Korean Male Drivers

한국인 남성 운전자의 운전 자세에서 발생하는 몸통 처짐 현상에 관한 예측 모델 연구

  • Oh, Youngtaek (Department of Industrial System and Information Engineering, Korea University) ;
  • Jung, Eui S. (Division of Information Management Engineering, Korea University) ;
  • Park, Sungjoon (Department of Industrial and Management Engineering, Namseoul University) ;
  • Jeong, Seong Wook (Department of Industrial System and Information Engineering, Korea University)
  • 오영택 (고려대학교 산업시스템정보공학과) ;
  • 정의승 (고려대학교 정보경영공학부) ;
  • 박성준 (남서울대학교 산업경영공학과) ;
  • 정성욱 (고려대학교 산업시스템정보공학과)
  • Published : 2008.03.31

Abstract

In the vehicle design, the research on driving posture has stood out as one of the important issues. Recently, the research on 3D human modeling focused on more exact implementation of real driving posture. However, prediction of driving posture through the 3D human modeling fail to reflect on the model the phenomenon called sagging, which refers to the retraction or shrinking of the torso while driving. 30 male subjects participated in the experiment where total subjects were divided into four groups according to height percentile(under 50%ile, 51%ile to 75%ile, 76%ile to 95%ile, over 95%ile). The independent variables were seat back angle(4 levels) and seat pan angle(2 levels). The dependent variable was capacity or the degree of retraction of the torso. First this study measured the sagging capacity by using a paired T-test between erect and retracted posture. Secondly it was tried to find out significant anthropometric variables that were statistically correlated by the analysis of correlation. Finally, a prediction model was derived which explains the capacity of sagging.

Keywords

References

  1. Bertil Jonsson, Hans Stenlund, Mats Y. Svensson, and Ulf Bjornstig (2007), Backset and Cervical Retraction Capacity among Occupants in a Modern Car, Traffic Injury Prevention, 8, 87-93. https://doi.org/10.1080/15389580600911010
  2. Brain Peacock, and Waldemar Karwowski (1993), Automotive ergonomics, Taylor & Francis.
  3. Hong, Seungwoo., Park, Sungjoon. and Jung, Eui S. (2006), 3-D Body Typing of Korean Adults and its Application to Vehicle Design, Journal of the Ergonomics Society of Korea, 25(2), 1-9.
  4. Judic, J. M, Cooper, J. A, Truchot, P., Effenterre, P. V. and Duchanp, R. (1993), More Objective Tools for the Integration of Postural Comfort in Automotive Seat Design, Society of Automotive Engineers, SAE paper 930113.
  5. Matthew, P. Reed, Miriam A. Manary, Carol A. C. Flannagan, and Lawrence W. Schneider (2000), Effects of Vehicle Interior Geometry and Anthropometric Variables on Automobile Driving Posture, Human Factors, 42(4), Winter 2000, 541-552. https://doi.org/10.1518/001872000779698006
  6. Park, S. J., Kim, C-B., Kim, C. J. and Lee, J. W. (2000), Comfortable driving postures for Koreans, International Journal of Industrial Ergonomics, 26, 489-497. https://doi.org/10.1016/S0169-8141(00)00020-2
  7. Park, S. J. and Kim, H. (2002), Development of a Postural Evaluation Function for Effective Use of an Ergonomic Human Model, Journal of the Korean Institute of Industrial Engineers, 28(2), 216-222.
  8. Park, S. J. (2006), Estimation of Driver's Standard Postures by a Multivariate Analysis Method, Journal of the Ergonomics Society of Korea, 25(1), 27-33. https://doi.org/10.5143/JESK.2006.25.1.027
  9. Raymond R. Brodeur, and Mac Reynolds (1995), Modeling Spine Shape for the Seated Posture, ERL-TR-95-007, Ergonomics Research Laboratory, Michigan State University.
  10. Reynolds, H. M. (1994), Erect, Neutral and Slump Sitting Postures : A Study of the Torso Linkage System From Shoulder to Hip Joint, Air Force Aerospace Medical Research Laboratory,
  11. Seong, W. J., Oh, Y. T. Jung, E. S. and Park, S. J. (2007), The Research on Sagging Observed during Driving in Korean Male Drivers, Proceedings of Korean Ergonomics Conference-Spring.
  12. Shin, W. K. and Park, M. Y. (1999), Proposal of Standard about Vehicle Driving Space Regard to Prefer Driving Posture of Korean Drivers, Proceedings of Korean Ergonomics Conference.
  13. Vergara, M., Page, A. and Sancho, J. L. (2006), Analysis of lumbar flexion in sitting posture : Location of lumbar vertebrae with relation to easily identifiable skin marks, International Journal of Industrial Ergonomics 36, 937-942. https://doi.org/10.1016/j.ergon.2006.07.006