N. K. Khamis, B. Md. Deros and M. S. Abdul Khalid
Abstract: One of the key considerations when sitting particularly for a long period of time, either in the office chair or car seat is comfort. Studies have revealed a high number of reports regarding discomfort and musculoskeletal disorders while sitting in a fixed position. The main objective of this study is to review past and present subjective assessment in published studies in the area of sitting discomfort and find the gap between each study to be applied in future studies. Fifty relevant studies were identified and chosen from electronic databases, dating as far back as 1969. “Seat”, “chair”, “sit”, “comfort”, “discomfort” and “assessment” were the keyword search terms for this paper. Past studies demonstrated numerous purposes and techniques of analysing sitting discomfort. They provide better understanding for both researchers and the industry to deal with sitting discomfort issues. Various assessment methods have also been applied in the previous studies. However, they are still areas found in past studies that need to be investigated. Therefore, it is proposed that another assessment is performed to analyse sitting discomfort, by exploring issues derived from this review.
Keywords:Seat, chair, sit, comfort, discomfort, assessment
Althoff, I., Brinckmann, P., Frobin, W., Sandover, J., & Burton, K. (1992). An improved method of stature measurement for quantitative determination of spinal loading. Application to sitting postures and whole body vibration. Spine, 17(6), 682-693.
Beard, G.F., & Griffin, M.J. (2013). Discomfort during lateral acceleration: influence of seat cushion and backrest. Applied Ergonomics, 44(4), 588-594. doi:10.1016/j.apergo.2012.11.009
Borg, G. (1982). A category scale with ratio properties for intermodal and interindividual comparisons. In H.G. Geisler & B. Petzold (Eds.), Psychophysical judgement and the process of perception. Berlin: VEB Deutscher Verlag der Wissenschaft.
Bovenzi, M., & Betta, A. (1994). Low-back disorders in agricultural tractor drivers exposed to whole- body vibration and postural stress. Applied Ergonomics, 25(4), 231-241.
Bush, T.R., & Hubbard, R.P. (2008). A comparison of four office chairs using biomechanical measures. Human Factors: The Journal of the Human Factors and Ergonomics Society, 50(4), 629-642. doi:10.1518/001872008X288321
Cengiz, T.G., & Babalik, F.C. (2007). An on-the-road experiment into the thermal comfort of car seats. Applied Ergonomics, 38(3), 337-347. doi:10.1016/j.apergo. 2006.04.018
Cengiz, T., & Babalik, F. (2009). The effects of ramie blended car seat covers on thermal comfort during road trials. International Journal of Industrial Ergonomics, 39(2), 287-294.
Deros, B.M., Daruis, D., & Mohd Nor, M.J. (2009). Evaluation of car seat using reliable and valid vehicle seat discomfort survey. Industrial Engineering and Management Systems (IEMS), 8(2), 121-130.
Dian Darina Indah, D., Mohd Nor, M.J., & Deros, B.M. (2010). Vibration transmissibility and subjective evaluation on whole body vibration in a field investigation. Paper presented at the 17th International Congress on Sound and Vibration, Cairo, Egypt.
Drury, C.G., & Coury, B.G. (1982). A methodology for chair evaluations. Applied Ergonomics, 13, 195–202.
El Falou, W., Duchêne, J., Grabisch, M., Hewson, D., Langeron, Y., & Lino, F. (2003). Evaluation of driver discomfort during long duration car driving. Applied Ergonomics, 34(3), 249-55. doi:10.1016/S0003-6870(03)00011-5
Ellermeier, W., & Westphal, W. (1991). On the “absoluteness” of category and magnitude scales of pain. Perception and Psychophysics, 49, 159-166.
Fatollahzadeh, K. (2006). A laboratory vehicle mock-up research work on truck driver’s seat position and posture (Doctoral dissertation). KTH, Royal Institute of Technology, Department of Industrial Economics and Management, Division of Industrial Ergonomics, Stockholm, Sweden. Retrieved from http://www.diva-portal.org/smash/get/diva2:10461/FULLTEXT01.pdf
Fernandez, J.E., & Poonawala, M.F. (1998). How long should it take to evaluate seats subjectively? International Journal of Industrial Ergonomics, 22(6), 483-487. doi:10.1016/S0169- 8141(97)90014-7
Gefen, A. (2009). Bioengineering research of chronic wounds: A multidisciplinary study approach. Volume 1 of Studies in mechanobiology, tissue engineering and biomaterials. Berlin: Springer Science & Business Media.
Goonetilleke, R.S., & Feizhou, S. (2001). A methodology to determine the optimum seat depth. International Journal of Industrial Ergonomics, 27(4), 207-217. doi:10.1016/S0169- 8141(00)00051-2
Grabisch, M., Duchene, J., Lino, F., & Perny, P. (2002). Subjective evaluation of discomfort in sitting position. Fuzzy Optimization and Decision Making, 1, 287-312.
Graf, M., Guggenbuhl, U., & Krueger, H. (1993) Investigations on the effects of seat shape and slope on posture, comfort and back muscle activity. International Journal of Industrial Ergonomics, 12(1-2), 91-103.
Graf, M., Guggenbuhl, U., & Krueger, H. (1995). An assessment of seated activity and postures at five workplaces. International Journal of Industrial Ergonomics, 15(2), 81-90.
Groenesteijn, L., Vink, P., de Looze, M., & Krause, F. (2009). Effects of differences in office chair controls, seat and backrest angle design in relation to tasks. Applied Ergonomics, 40(3), 362-370. doi:10.1016/j.apergo.2008.11.011
Habsburg, S., & Middendorf, L. (1977). What really connects in seating comfort? Studies of correlates of static seat comfort. SAE technical paper 770247. https://doi.org/10.4271/770247
Hostens, I., & Ramon, H. (2005). Assessment of muscle fatigue in low level monotonous task performance during car driving. Journal of Electromyography and Kinesiology, 15(3), 266-274. doi:10.1016/j.jelekin. 2004.08.002
Jianghong, Z., & Long, T. (1994). An evaluation of comfort of a bus seat. Applied Ergonomics, 25(6), 386-392.
Johns, M.W. (2014). Appendix 1: The subjective measurement of excessive daytime sleepiness. In: Sleep disorders: Diagnosis and therapeutics (pp. 643-657).
Kamp, I. (2012). The influence of car-seat design on its character experience. Applied Ergonomics, 43(2), 329-335. doi:10.1016/j.apergo.2011.06.008
Kolich, M. (2003). Automobile seat comfort: occupant preferences vs. anthropometric accommodation. Applied Ergonomics, 34(2), 177-184. doi:10.1016/S0003-6870(02)00142-4
Kolich, M., & White, P. (2004). Reliability and validity of a long term survey for automobile seat comfort. International Journal of Vehicle Design, 34(2), 158-167.
Kolich, M., Seal, N., & Taboun, S. (2004). Automobile seat comfort prediction: statistical model vs. artificial neural network. Applied Ergonomics, 35(3), 275-84. doi:10.1016/j.apergo. 2004.01.007
Kong, T.W. (2006). Comfort analysis in commercial vehicle’s passenger seat (Master’s thesis). Universiti Teknologi Malaysia (UTM), Skudai, Johor, Malaysia.
Kowalski, K., Rhodes, R., Naylor, P.J., Tuokko, H., & MacDonald, S. (2012). Direct and indirect measurement of physical activity in older adults: A systematic review of the literature. International Journal of Behavioral Nutrition and Physical Activity, 9, 148.
Kozawa, Y., Sugimoto, G., & Suzuki, Y. (1986). A new ride comfort meter. SAE technical paper 860430. https://doi.org/10.4271/860430
Kyung, G. (2008). An integrated human factors approach to design and evaluation of the driver workspace and interface: Driver perception, behaviour, and objective measures (Doctoral dissertation). Virginia Polytechnic Institute and State University, VA, US.
Lanzotti, A., Trotta, M., & Vanacore, A. (2011). Validation of a new index for seat comfort assessment based on objective and subjective measurements. Proceedings of the IMProVe 2011 International conference on Innovative Methods in Product Design, 60-68.
Le, P., Rose, J., Knapik, G., & Marras, W.S. (2014). Objective classification of vehicle seat discomfort. Ergonomics, 57(4), 536-544. https://doi.org/10.1080/00140139.2014.887787
Lee, K. S., Ferraiuolo, P., & Temming, J. (1993). Measuring seat comfort. SAE technical papers series 930105, 25-30. Troy, MI: Society of Automotive Engineers.
Lueder, R. (2004). Ergonomics of seated movement: A review of the scientific literature. Encino, CA: Humanics ErgoSystems, Inc.
Mansfield, N., Sammonds, G., & Nguyen, L. (2015). Driver discomfort in vehicle seats – effect of changing road conditions and seat foam composition. Applied Ergonomics, 50, 153-159. https://doi.org/10.1016/j.apergo.2015.03.010
Na, S., Lim, S., Choi, H.-S., & Chung, M.K. (2005). Evaluation of driver’s discomfort and postural change using dynamic body pressure distribution. International Journal of Industrial Ergonomics, 35(12), 1085–1096. doi:10.1016/j.ergon. 2005.03.004
Newell, G.S., & Mansfield, N.J. (2008). Evaluation of reaction time performance and subjective workload during whole-body vibration exposure while seated in upright and twisted postures with and without armrests. International Journal of Industrial Ergonomics, 38(5-6), 499-508. doi:10.1016/j.ergon.2007.08.018
Ng, D., Cassar, T., & Gross, C.M. (1995). Evaluation of an intelligent seat system. Applied Ergonomics, 26(2), 109-16.
Nilsson, T., Nelson, T. M., & Carlson, D. (1997). Development of fatigue symptoms during simulated driving. Accident Analysis and Prevention, 29(4), 479-488.
NIOSH (1997). Low back musculoskeletal disorders: Evidence for work-relatedness (Chapter 6). In: B.P. Bernard (Ed.), Musculoskeletal disorders (MSDs) and workplace factors. A critical review of epidemiologic evidence for work-related musculoskeletal disorders of the neck, upper extremity, and low back. Washington, DC: National Dept. Health and Human Services.
Openshaw, S.D. (2011). Predicting and quantifying seated comfort and discomfort using objective and subjective measures (Doctoral dissertation). University of Iowa, US.
Parakket, J., Pallettiere, J., Reynolds, D., Sasidharan, M., & El-Zoghb, M. (2006). Quantitative methods for determining U.S. Air Force crew cushion comfort. Interim report. 1-12. Wright Patterson AFB, OH: Air Force Research Laboratory. doi: 10.4271/2006-01-2339
Park, S.J., Min, S.N., Subramaniyam, M., Lee, D.-H., Lee, H., & Kim, D.G. (2014). Analysis of body pressure ratio for evaluation of automotive seating comfort. SAE technical paper 2014-01-0456. https://doi.org/10.4271/2014-01-0456.
Philip, P., Taillard, J., Klein, E., Sagaspe, P., Charles, A, Davies, W., & Bioulac, B. (2003). Effect of fatigue on performance measured by a driving simulator in automobile drivers. Journal of Psychosomatic Research, 55(3), 197-200. doi:10.1016/S0022-3999(02)00496-8
Pitrella, F.D., & Käppler, W.-D. (1988). Identification and evaluation of scale design principles in the development of the extended range, sequential judgement scale (Research report no. 80). Forschungsinstitut für Anthropotechnik, Wachtberg, Germany.
Porter, J.M., & Sharp, J.C. (1984). The influence of age, sex, and musculoskeletal health upon the subjective evaluation of vehicle seating. Contemporary Ergonomics, 148-154.
Rohlmann, A., Claes, L.E., Bergmannt, G., Graichen, F., Neef, P., & Wilke, H.J. (2001). Comparison of intradiscal pressures and spinal fixator loads for different body positions and exercises. Ergonomics, 44(8), 781-794.
Shackel, B., Chidsey, K.D., & Shipley, P. (1969). The assessment of chair comfort. Ergonomics, 12(2), 269-306.
Shen, W., & Parsons, K. C. (1997). Validity and reliability of rating scales for seated pressure discomfort. International Journal of Industrial Ergonomics, 20(6), 441–461. doi:10.1016/S0169- 8141(96)00068-6
Smith, D.R., Andrews, D.M., & Wawrow, P.T. (2006). Development and evaluation of the Automotive Seating Discomfort Questionnaire (ASDQ). International Journal of Industrial Ergonomics, 36, 141-149.
Solaz, J.S., Page, A., Porcar, R., Mateo, B., Dura, J.V., Gomez, J.A., Prat, J., & Vera, P. (2006). Functional data analysis as a tool to find discomfort evolution patterns in passenger car seats. SAE technical paper no. 2006-01-1296. Warrendale, PA: Society of Automotive Engineers, Inc.
Soltes, L., & Valuch, J. (2016). Biomechanical model for seat comfort in automobile. International Journal of Engineering Innovation & Research, 5(4), 264-268.
Tan, F. Delbressine, F., Chen, W., & Rauterberg, M. (2008). Subjective and objective measurements for comfortable truck driver’s seat. AVEC, 851-856.
Tan, C.F., Chen, W., & Rauterberg, M. (2010). Seat discomfort of Dutch truck driver seat : A survey study and analysis. SAE technical paper 2010-01-0774, 1–8. SAE International. doi: 10.4271/2010-01-0774
Thakurta, K., Koester, D., Bush, N., & Bachle, S. (1995). Evaluating short and long term seating comfort. SAE technical paper 950144. https://doi.org/10.4271/950144
Thiffault, P., & Bergeron, J. (2003). Monotony of road environment and driver fatigue: a simulator study. Accident Analysis and Prevention, 35(3), 381-391.
Thomas, R.E., Congleton, J.J., Hukingtom R.D., Whiteley, J.R., & Rodrigues, C.C. (1991). An investigation of relationships be- tween driver comfort, performance and automobile seat type during short term driving tasks. International Journal of Industrial Ergonomics, 8, 103-114.
Tsutsumi, H., Hoda, Y., Tanabe, S.I., & Arishiro, A. (2007). Effect of car cabin environment on driver’s comfort and fatigue. SAE technical paper no. 2007-01-0444. Warrendale, PA: Society of Automotive Engineers. Inc.
Udo, H., Fujimura, M., & Yoshinaga, F. (1999). The effect of a tilting seat on back, lower back and legs during sitting work. Industrial Health, 37(4), 369-381.
Vergara, M., & Page, A. (2002). Relationship between comfort and back posture and mobility in sitting- posture. Applied Ergonomics, 33, 1-8.
Wilder, D., Magnusson, M.L., & Pope, M. (1994). The effect of posture and seat suspension design on discomfort and back muscle fatigue during simulated truck driving. Applied Ergonomics, 25, 66- 76.
Wilke, H.J., Neef, P., Caimi, M., Hoogland, T., & Claes, L.E. (1999). New in vivo measurements of pressures in the intervertebral disc in daily life. Spine, 24(8), 755-762.
Yu, C.Y., Keyserling, W.M., & Chaffin, D.B. (1988). Development of a work seat for industrial sewing operations: Results of a laboratory study. Ergonomics, 31, 1765-1786.
Yu, C.Y., & Keyserling, W.M. (1989). Evaluation of a new work seat for industrial sewing operations. Applied Ergonomics, 20, 17-25.
Zenk, R., Franz, M., & Bubb, H. (2007). Spine load in the context of automotive seating. SAE technical paper no. 2007-01-2485. Warrendale, PA: Society of Automotive Engineers. Inc.
Zhang, L., Helander, M.G., & Drury, C.G. (1996). Identifying factors of comfort and discomfort in sitting. Human Factors: The Journal of the Human Factors and Ergonomics Society, 38(3), 377- 389. doi:10.1518/001872096778701962