This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Some Effects of Lumbar Support Contour on Driver Seated Posture
Annotation ability available
Sector:
Language:
English
Abstract
An appropriately contoured lumbar support is widely regarded as an essential component of a comfortable auto seat. A frequently stated objective for a lumbar support is to maintain the sitter's lumbar spine in a slightly extended, or lordotic, posture. Although sitters have been observed to sit with substantial lordosis in some short-duration testing, long-term postural interaction with a lumbar support has not been documented quantitatively in the automotive environment. A laboratory study was conducted to investigate driver posture with three seatback contours. Subjects† from four anthropometric groups operated an interactive laboratory driving simulator for one-hour trials. Posture data were collected by means of a sonic digitizing system. The data identify driver-selected postures over time for three lumbar support contours. An increase of 25 mm in the lumbar support prominence from a flat contour did not substantially change lumbar spine posture.
Recommended Content
| Technical Paper | Locating the Pelvis in the Seated Automobile Driver |
| Technical Paper | Torso Kinematics in Seated Reaches |
Authors
Citation
Reed, M., Schneider, L., and Eby, B., "Some Effects of Lumbar Support Contour on Driver Seated Posture," SAE Technical Paper 950141, 1995, https://doi.org/10.4271/950141.Also In
Human Factors in Vehicle Design: Lighting, Seating, and Advanced Electronics
Number: SP-1088; Published: 1995-02-01
Number: SP-1088; Published: 1995-02-01
References
- Åkerblom, B. 1948 Standing and sitting posture with special reference to the construction of chairs Bokhandeln Nordiska A.B. Karolinska Institutet Stockholm
- Chaffin, D.B. Andersson, G.B.J. 1991 Occupational Biomechanics 2nd Ed Wiley and Sons New York
- Reynolds, H.M. 1993 Automotive seat design for sitting comfort Karwowski W. Peacock B. Automotive Ergonomics 99 116 Taylor and Francis New York
- Reed, M.P. Schneider, L.W. Ricci, L.L. 1994 Survey of auto seat design recommendations for improved comfort Technical Report UMTRI-94-6 University of Michigan Transportation Research Institute Ann Arbor, MI
- Reed, M. P. Saito, M. Kakishima, Y. Lee, N. S. Schneider, L. W. 1991 An investigation of driver discomfort and related seat design factors in extended-duration driving SAE Technical Paper 910117 Society of Automotive Engineers Warrendale, PA
- Andersson, G. B. J. Örtengren, R. Nachemson, A. Elfström, G. 1974 Lumbar disc pressure and myoelectric back muscle activity during sitting. I. Studies on an experimental chair Scandinavian Journal of Rehabilitation Medicine 6 3 104 114
- Andersson, G. B. J. Örtengren, R. 1974 Lumbar disc pressure and myoelectric back muscle activity during sitting. II. Studies on an office chair Scandinavian Journal of Rehabilitation Medicine 6 3 115 121
- Andersson, G. B. J. Örtengren, R. 1974 Lumbar disc pressure and myoelectric back muscle activity during sitting. III. Studies on a wheelchair Scandinavian Journal of Rehabilitation Medicine 6 3 122 127
- Andersson, G. B. J. Örtengren, R. Nachemson, A. Elfström, G. 1974 Lumbar disc pressure and myoelectric back muscle activity during sitting. IV. Studies on a car driver's seat Scandinavian Journal of Rehabilitation Medicine 6 3 128 33
- Andersson, G. B. J. Murphy, R. W. Örtengren, R. Nachemson, A. L. 1979 The influence of backrest inclination and lumbar support on lumbar lordosis Spine 4 1 52 58
- SAE J826 Handbook 1991 Volume 4 Devices for use in defining and measuring vehicle seat accommodation -SAE J826 34 52 56 Society of Automotive Engineers Warrendale, PA
- Keegan, J. J. 1953 Alterations of the lumbar curve related to posture and seating Journal of Bone and Joint Surgery 35-A 3 589 603
- Keegan, J. J. 1964 The medical problem of lumbar spine flattening in automobile seats SAE Technical Paper 838A Society of Automotive Engineers New York
- Keegan, J. J. Radke, A. O. 1964 Designing vehicle seats for greater comfort SAE Journal 72 9 50 55
- Porter, J. M. Norris, B.J. 1987 The effects of posture and seat design on lumbar lordosis Megaw E.D. ed. Contemporary Ergonomics 191 196 Taylor and Francis New York
- Adams, M. A. Hutton, W. C. 1985 The effect of posture on the lumbar spine Journal of Bone and Joint Surgery 67-B 4 625 629
- Gordon, C. C. Churchill, T. Clauser, C. E. Bradtmiller, B. McConville, J. T. Tebbetts, I. Walker, R. A. 1989 1988 anthropometric survey of U.S. Army personnel: Methods and summary statistics Final Report NATICK/TR-89/027 U.S. Army Natick Research, Development and Engineering Center Natick, MA
- Manary, M. A. Schneider, L. W. Flannagan, C. C. Eby, B. H. 1994 Evaluation of the SAE J826 3-D manikin measures of driver positioning and posture SAE Technical Paper 941048 Society of Automotive Engineers Warrendale, PA
- Schneider, L. W. Robbins, D. H. Pflüg, M. A. Snyder, R.G. 1985 Development of anthropometrically based design specifications for an advanced adult anthropomorphic dummy family Volume 1 Final Report DOT-HS-806-715 U.S. Department of Transportation, National Highway Traffic Safety Administration Washington, D.C.
- Haas, W.A. 1989 Geometric model and spinal motions of the average male in seated postures Michigan State University East Lansing, MI
- Snyder, R. G. Chaffin, D. B. Schutz, R. 1972 Link system of the human torso Report No. AMRL-TR-7188 Aerospace Medical Research Laboratory Wright-Patterson Air Force Base, OH
- Reynolds, H. M. Snow, C. C. Young, J. W. 1981 Spatial geometry of the human pelvis Memorandum Report AAC-119-81-5 Federal Aviation Administration, Civil Aeromedical Institute Oklahoma City, OK
- Hubbard, R. P. Haas, W. A. Boughner, R. L. Conole, R. A. Bush, N. J. 1993 New biomechanical models for automobile seat design SAE Technical Paper 930110 Society of Automotive Engineers Warrendale, PA
- Stokes, I. A. F. Abery, J. M. 1980 Influence of the hamstring muscles on lumbar spine curvature in sitting Spine 5 6 525 528
- Boughner, R. L. 1991 A model of average adult male human skeletal and leg muscle geometry and hamstring length for automotive seat designers Michigan State University, Department of Metallurgy, Mechanics, and Material Science East Lansing, MI