marras photo  William S. Marras, PhD, CPE
 
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Biographic information:
 
Dr. William S. Marras is a Professor and holds the Honda Endowed Chair in the Department of Industrial, Welding and Systems Engineering at the Ohio State University.  He is also the director of the Biodynamics Laboratory and holds adjunct appointments in the Departments of Orthopaedic Surgery, Department of Physical Medicine, and the Biomedical Engineering Department.  Professor Marras is the Executive Director of the Ohio State University Institute for Ergonomics and serves as director of the Center for Occupational Health in Automotive Manufacturing (COHAM).  His pioneering research applies quantitative engineering techniques to occupational surveillance, laboratory studies, and mathematical modeling where he explores the occupational causality of low back pain as well as techniques for the clinical assessment and treatment of low back pain. Professor Marras’ findings have been published in over 185 peer reviewed journal articles and numerous book chapters.  He serves as Deputy Editor for the journals Spine and Human Factors and is also the current chair of the National Academy of Science’s (National Research Council) committee on Human Systems Integration.  Dr. Marras was elected to the National Academy of Engineers in 2009.

working back-book coverProfessor Marras’ work has attracted national as well as international recognition.  Among these awards, he is a two-time winner (1993 and 2002) of the prestigious Swedish Volvo Award for Low Back Pain Research, Austria's Vienna Award for Physical Medicine, The Jack A. Kraft Innovator Award, The Liberty Mutual Prize for Injury Prevention Research, and the National Institute for Occupational Safety and Health’s Alice Hamilton Award for Science Award. He was also recently awarded an honorary Doctor of Science degree from the University of Waterloo for his work on the biomechanics of low back disorders. He is a fellow of the American Institute of Medical and Biological Engineers, the Human Factors and Ergonomics Society, the International Ergonomics Association, and the Ergonomics Society. Professor Marras recently published a new book entitled The Working Back: A systems view.

 
Publications:

Refereed Journal Articles:      1980-1989      1990-1999      2000-present       Return to top of page

  1. Marras, W. S., and K. H. E. Kroemer, (1980), "A Method to Evaluate Human Factors/Ergonomics Design Variables of Distress Signals," Human Factors, 22(4), 389-400.
  2. Kroemer, K. H. E. and W. S. Marras, (1980), "Ergonomics of Visual Emergency Signals," Journal of Applied Ergonomics, 11(3), 137-144.
  3. Kroemer, K. H. E. and W. S. Marras, (1980), "Towards an Objective Assessment of the Maximal Voluntary Contraction Component in Routine Muscle Strength Measurements," European Journal of Applied Physiology, 45, 1-9.
  4. Kroemer, K. H. E., and W. S. Marras, (1981), "Evaluation of Maximal and Sub-Maximal Static Muscle Exertions," Human Factors, 23(6), 643-654.
  5. Marras, W. S., King, A. I., and R. L. Joynt, (1984), "Measurements of Loads on the Lumbar Spine Under Isometric and Isokinetic Conditions," Spine, 9(2), 176-188.
  6. Marras, W. S., Joynt, R. L., and A. I. King, (1985), "The Force Velocity Relation and Intra-abdominal Pressure During Lifting Activities," Ergonomics, 23(3), 603-613.
  7. Marras, W. S., and T. H. Rockwell, (1986), "An Experimental Evaluation of Method and Tool Effects in Spike Maul Use," Human Factors, 28(3), 267-281.
  8. Rockwell, T. H., and W. S. Marras, (1986), "An Evaluation of Tool Design and Method of Use of Railroad Leverage Tools on Back Stress and Tool Performance," Human Factors, 28(3) 303-315.
  9. Marras, W. S., and P. E. Wongsam, (1986), "Flexibility and Velocity of the Normal and Impaired Lumbar Spine," Archives of Physical Medicine and Rehabilitation, 67, 213-217.
  10. Marras, W. S., Wongsam, P. E., and S. L. Rangarajulu, (1986), "Trunk Motion During Lifting: The Relative Cost," International Journal of Industrial Ergonomics, 1(2), 103-113.
  11. Marras, W. S., Rangarajulu, S. L., and P. E. Wongsam, (1987), "Trunk Force Development During Static and Dynamic Lifts," Human Factors, 29(1), 19-29.
  12. Marras, W. S., (1987), "Trunk Motion During Lifting: Temporal Relations Among Loading Factors," International Journal of Industrial Ergonomics, 1(3), 159-167.
  13. Marras, W. S., Rangarajulu, S. L. and S. A. Lavender, (1987), "Trunk Loading and Expectation," Ergonomics, 30(3), 551-562.
  14. Kim, J. Y. and W. S. Marras, (1987), "Quantitative Trunk Muscle Electromyography During Lifting at Different Speeds," International Journal of Industrial Ergonomics, 1(3), 219-229.
  15. Treaster, D., and W. S. Marras, (1987), "Measurement of Seat and Back Pressure Distributions," Human Factors, 29(5), 563-575.
  16. Marras, W. S., Bobick, T. G., Lavender, S. A., Rockwell, T. H., and R. L. Lundquist, (1988), "Risks of Hand Tool Injury in U.S. Underground Mining from 1978 through 1983, Part I: Coal Mining," Journal of Safety Research, 19, 71-85.
  17. Marras, W. S., Lavender, S. A., Bobick, T. G., Rockwell, T. H., and R. L. Lundquist, (1988), "Risks of Hand Tool Injury in U.S. Underground Mining from 1978 through 1983, Part II:  Metal-Non Metal Mining," Journal of Safety Research, 19, 115-124.
  18. Marras, W. S., and C. H. Reilly, (1988), "Networks of Internal Trunk Loading Activities Under Controlled Trunk Motion Conditions," Spine, 13(6), 661-667.
  19. Marras, W. S., (1988), "Predictions of Forces Acting Upon the Lumbar Spine Under Isometric and Isokinetic Conditions:  A Model-Experiment Comparison," International Journal of Industrial Ergonomics, 3(1), 19-27.
  20. Gallagher, S., Marras, W. S., and T. G. Bobick, (1988), "Lifting in Stooped and Kneeling Postures:  Effects on Lifting Capacity, Metabolic Costs and Electromyography of Eight Trunk Muscles," International Journal of Industrial Ergonomics, 3(1), 65-76.
  21. Reilly, C. H., and W. S. Marras, (1989), "SIMULIFT:  A Simulation Model of Human Trunk Motion During Lifting," Spine, 14(1), 5-11.
  22. Lavender, S. A., Mirka, G. A., Schoenmarklin, R. W., Sommerich, C. M., Sudhaker, L. R., and W. S. Marras, (1989), "An Investigation into the Effects of Preview and Symmetry on Trunk Loading," Human Factors, 31(1) 101-115.
  23. Schoenmarklin, R. W. and W. S. Marras, (1989), "Effects of Angle and Work Orientation on Hammering: I.  Wrist Motion and Hammering Performance," Human Factors, 31(4), 397-411.
  24. Schoenmarklin, R. W. and W. S. Marras, (1989), "Effects of Angle and Work Orientation on Hammering: II. Muscle Fatigue and Subjective Ratings of Body Discomfort," Human Factors, 31(4), 413-420.
  25. Gray, B. A., and W. S. Marras, (1989), "An Experimental Analysis of Railroad Spike Maul Methods," Human Factors, 31(3), 335-344.
  26. Marras, W. S. and G. A. Mirka, (1989), "Trunk Strength During Asymmetric Trunk Motion," Human Factors, 31(6), 667-677.
  27. Mirka, G. A. and W. S. Marras, (1990), "Lumbar Motion Response to a Constant Load Velocity Lift," Human Factors, 32(4), 493-501.
  28. Marras, W. S. and G. A. Mirka, (1990), " Trunk Responses to Asymmetric Acceleration," Journal of Orthopaedic Research, 8(6), 824-832.
  29. Lavender, S. A. and W. S. Marras, (1990), "An Electromyographic Analysis of an Ergonomic Intervention with the Jack Leg Drill," Applied Ergonomics, 21(2), 90-100.
  30. Marras, W.S., (1990), "A Guide to Industrial Applications of Electromyography," International Journal of Industrial Ergonomics, 6, 89-93.
  31. Kroemer, K. H. E., Marras, W. S., McGlothlin, J. D., McIntyre, D. R., and M. Nordin, (1990), "On the Measurement of Human Strength," International Journal of Industrial Ergonomics, 6, 199-210.
  32. Ahern, D. K., Follick, M. J., Lucas, P., Parziale, J., Marras, W. S., Wilkin D. and Wolf, S., (1990), "Interdisciplinary perspectives on mechanisms and management of low back pain," Rhode Island Medical Journal, January, 21-31.
  33. Marras, W. S. and Ferguson, S. A. and Simon S. R. (1990), "Three dimensional dynamic motor performance of the normal trunk," International Journal of Industrial Ergonomics, 6, 211-224.
  34. Marras, W. S. and S. A. Lavender, (1991), "The Effects of Method of Use, Tool Design, and Roof Height on Trunk Muscle Activities During Underground Scaling Bar Use," Ergonomics, 34(2), 221-232.
  35. Marras, W. S. and Sommerich, C. M., (1991), "A Three Dimensional Motion Model Of Loads On The Lumbar Spine, Part I: Model Structure," Human Factors, 33(2), 123-137.
  36. Marras, W. S. and Sommerich, C. M., (1991), "A Three Dimensional Motion Model Of Loads On The Lumbar Spine, Part II: Model Validation," Human Factors, 33(2), 139-149.
  37. Marras, W. S. (1991), "A Model for the Objective Assessment of Automobile Restraint Systems," International Journal of Industrial Ergonomics, 8(1), 59-65.
  38. Marras, W. S. and G. A. Mirka, (1992), "A Comprehensive Evaluation of Asymmetric Trunk Motions," Spine 17(3), 318-326.
  39. Marras, W.S. Fathallah, F., Miller R.J., Davis S.W. and G.A. Mirka (1992), "Accuracy of a Three Dimensional Lumbar Motion Monitor for Recording Dynamic Trunk Motion Characteristics," International Journal of Industrial Ergonomics, 9(1), 75-87.
  40. Sommerich, C.M. and W.S. Marras (1992), "Temporal Patterns of Trunk Muscle Activity Throughout a Dynamic, Asymmetric Lifting Motion," Human Factors, 34(2), 215-230.
  41. Ferguson S.A., W.S. Marras and T.R. Waters (1992), "Quantification of Back Motion During Asymmetric Lifting," Ergonomics, 35(7/8), 845-859.
  42. Ferguson, S.A., and Marras W.S. (1992), “Quantification of Velocity Coupling During Asymmetric Lifting,” International Journal of Industrial Ergonomics, 10, 207-215.
  43. Lavender, S.A., Marras, W.S., and R.A. Miller (1993), "The Development of Preparatory Response Strategies in Anticipation of Sudden Loading to the Torso," Spine, 18(14), 2097-2105.
  44. Sommerich, C.M., McGlothlin, J.D., and W.S. Marras (1993), "Occupational Risk Factors Associated with Soft Tissue Disorders of the Shoulder: A review of Recent Investigations in the Literature,” Ergonomics, 36(6), 697-717.
  45. Marras, W. S., McGlothlin, J. D., McIntyre, D. R., Nordin, M., and Kroemer, K. H. E., (1993), "Dynamic Measures of Low Back Performance," American Industrial Hygiene Association Ergonomics Guide, ISBN 0-932627-52-8, Stock No. 174-ER-93.
  46. Marras, W.S. and Schoenmarklin, R.W., (1993), “Wrist Motion in Industry,” Ergonomics, 36(4), 341-351.
  47. Schoenmarklin, R.W. and Marras, W.S., (1993), "Dynamic Capabilities of the Wrist Joint in Industrial Workers," International Journal of Industrial Ergonomics, 11(3), 207-224.
  48. Marras, W.S., Lavender, S.A, Leurgans, S., Rajulu, S., Allread, W.G., Fathallah F. and Ferguson, S.A.,  (1993), “The Role of Dynamic Three Dimensional Trunk Motion in Occupationally-Related Low Back Disorders: The Effects of Workplace Factors, Trunk Position and Trunk Motion Characteristics on Injury,” Spine, 18(5), 617-628.
  49. Granata, K.P. and W.S. Marras, (1993), “An EMG-Assisted Model of Loads on the Lumbar Spine During Asymmetric Trunk Extensions,” Journal of Biomechanics, 26(12), 1429-1438.
  50. Marras, W.S. and Kim, J. Y. (1993), “Anthropometry of Industrial Populations,” Ergonomics, 36(4), 371-378.
  51. Marras, W.S. and G.A. Mirka, (1993), “Electromyographic Studies of the Lumbar Trunk Musculature During the Generation of Low Level Trunk Acceleration,” Journal of Orthopaedic Research, 11(6), 811-817.
  52. Mirka G.A., and Marras, W.S. (1993), “A Stochastic Model of Trunk Muscle     Activities During Trunk Bending,” Spine, Volvo Award for Low Back Pain Research, 18(11), 1396-1409.
  53. Lavender, S.A, and Marras, W.S. (1993),"The Use of Turnover Rate as a Passive Surveillance Indicator For Potential Low Back Disorders," Ergonomics, 37(6), 971-978.
  54. Marras. W.S., Parnianpour, M., Ferguson, S.A., Kim, J.Y., Crowell, R.R., and Simon, S.R. (1993), "Quantification and Classification of Low Back Disorders Based on Trunk Motion," European Journal of Physical Medicine; Vienna Physical Medicine Award 1993, 3(6), 218-235.
  55. Gallagher, S., Hamrick, C. A., Love, A. C. and Marras, W. S., (1994), "Dynamic Biomechanical Modeling of Symmetric and Asymmetric Lifting Tasks in Restricted Postures,” Ergonomics, 37(8), 1289-1310.
  56. Kim, J.Y., Stuart-Buttle, C., and Marras W.S. (1994), “The Effects of Mats on Back and Leg Fatigue,” Applied Ergonomics, 25(1), 29-34.
  57. Schoenmarklin, R.W., Marras, W.S., and Leurgans S.E. (1994), "Industrial Wrist Motions and Risk of Cumulative Trauma Disorders in Industry," Ergonomics,     37(9), 1449-1459.
  58. Marras, W.S., Parnianpour, M. Kim, J.Y., Ferguson, S.A., Crowell, R.R, and Simon, S.R. (1994) "A Normal Database of Dynamic Trunk Motion Characteristics During Repetitive Trunk Flexion and Extension as A Function of Task Asymmetry, Age and Gender," IEEE Transactions, 2(3), 137-146.
  59. Marras, W.S., Lavender, S.A, Leurgans, S., Fathallah F., Allread, W.G., Ferguson, S.A., and Rajulu, S.  (1995), “Biomechanical Risk Factors for Occupationally Related Low Back Disorder Risk,” Ergonomics, 38(2), 377-410.
  60. Lavender, S.A., and Marras W.S. (1995), “The Effects of Temporal Warning Stimulus on the Biomechanical Preparations for Sudden Loading,” Journal of Electromyography and Kinesiology, 5(1) 45-56.
  61. Marras, W.S., Schoenmarklin, R.W., Greenspan, G. J., and K.R. Lehman (1995),  "Quantification of Wrist Motions During Scanning," Human Factors, 37(2) 412-423.
  62. Parnianpour, M., Kaushik, G., Barin, K., and Marras, W.S. (1995) "Quantification of Trunk Motion in Response to Complex Platform Perturbations While Holding Weights in an Upright Posture," IEEE Transactions, (in review).
  63. Marras, W.S., Parnianpour, M., Ferguson, S.A., Kim, J.Y., Crowell, R.R, Bose, S and Simon, S.R. (1995), "The Classification of Anatomic and Symptom Based Low Back Disorders Using Motion Measure Models," Spine, 20(23), 2531-2546.
  64. Marras, W.S. and Granata, K.P. (1995), "A Biomechanical Assessment and Model of Axial Twisting in the Thoraco-Lumbar Spine," Spine, 20(13), 1440-1451.
  65. Granata, K.P. and Marras, W.S. (1995), "An EMG-Assisted Model of Trunk Loading during Free-Dynamic Lifting," J. Biomechanics, 28(11), 1309-1317.
  66. Granata, K.P., and Marras, W.S. (1995), "The Influence of Trunk Muscle Coactivity Upon Dynamic Spinal Loads," Spine, 20(8), 913-919.
  67. Fathallah, F., Marras, W.S., and Wright, L.P. (1995), "Diurnal Changes in Trunk Motion Throughout the Day," J. Spinal Disorders, 8(1), 20-25.
  68. Marras, W.S. and Mirka G.A. (1996), “Intraabdominal Pressure During Extension Motions,” Clinical Biomechanics, 11(5), 267-274.
  69. Allread, W.G., Marras, W.S., and Parnianpour, M. (1996), "Trunk Kinematics Of One-Handed Lifting And Effects Of Asymmetry And Load Weight," Ergonomics, 39(2) 322-334.
  70. Kim, J.Y., Parnianpour, M., and Marras W.S. (1996) “Quantitative Assessment Of The Control Capability Of The Trunk Muscles During Oscillatory Bending Motion Under A New Experimental Protocol,” Clinical Biomechanics, 11(7), 385-391.
  71. Sommerich, C.M., Marras, W.S. and Parnianpour, M. (1996), “A Quantitative Description Of Typing Biomechanics,” Journal of Occupational Rehabilitation, 6(1), 33-55. 
  72. Sommerich, C.M., Marras, W.S. and Parnianpour, M. (1996), “Observations On The Relationship Between Key Strike Force And Typing Speed,” American Industrial Hygiene Association Journal, 57, 1109-1114.
  73. Granata, K. P., Marras, W.S., and Fathallah (1996) “A Method For Measuring External Loads During Dynamic Lifting Exertions,” Journal of Biomechanics, 29(9), 1219-1222.      
  74. Granata, K.P., Marras, W.S. and Davis K. G. (1997) “Biomechanical Assessment Of Lifting Dynamics, Muscle Activity And Spinal Loads While Using Three Different Styles Of Lifting Belt,” Clinical Biomechanics, 12(2), 107-115.
  75. Zurada, J., Karwowski, W., and Marras W.S. (1997) “A Neural Network-Based System For Classification Of Industrial Jobs With Respect To Risk Of Low Back Disorders Due To Workplace Design,” Applied Ergonomics, 28(1), 49-58.
  76. Marras, W.S., and Granata, K.P. (1997), "An EMG-Assisted Model of Trunk Lateral Bending," J. Biomechanics, 30(7), 697-703.
  77. Ferguson, S.A. and Marras, W.S. (1997) “A Review of Low Back Disorder Assessment Methods And Risk Factors,” Clinical Biomechanics, 12(4), 211-226.
  78. Lee, C.C., Nelson, E, Davis, K and Marras, W.S. (1997), “An Ergonomic Comparison of Industrial Spray Paint Guns,” International Journal of Industrial Ergonomics, 19, 425-435.
  79. Ferguson, S.A., Marras, W.S., and Crowell, R.R. (1997) “Dynamic Low Back Functional Motion Capacity Evaluation,” Journal of Occupational Rehab. 6, 203-214.
  80. Sparto P.J., Parnianpour M., Marras W.S., Granata K.P., Reinsel T.E., Simon S.R. (1997) “Neuromuscular Trunk Performance And Spinal Loading During A Fatiguing Isometric Trunk Extension With Varying Torque Requirements,” Journal of Spinal Disorders, 10(2), 145-156.
  81. Marras W.S. and Granata K.P. (1997) “The Development Of An EMG-Assisted Model To Assess Spine Loading During Whole-Body Free-Dynamic Lifting,” Journal of Electromyography and Kinesiology, 7(4), 259-268.
  82. Fathallah, F.A., Marras, W.S., Parnianpour M., and Granata K.P. (1997) “A Method For Measuring External Spinal Loads During Whole-Body Free-Dynamic Lifting,” Journal of Biomechanics, 30(9), 975-978.
  83. Davis, K., Kirking, B., Gaudes, L., Jay, W., and Marras, W.S. (1997), “The Influence Of Load Moment And Visual Perception On Psychophysically Determined Acceptable Lifting Weight,” Human Factors, 39(2), 312-322.
  84. Marras, W.S. and Granata, K.P. (1997) “Loads On The Lumbar Spine During Repetitive Lifting,” Spine, 22(21), 2564-2570.
  85. Marras, W.S., Granata, K.P., Davis, K.G., Allread, W.G., and Jorgensen M.J. (1997), “Spine Loading And Probability Of Low Back Disorder Risk As A Function Of Box Location On A Pallet,” International Journal of Human Factors in Manufacturing, 7(4), 323-336.
  86. Davis, K.G., Marras, W.S., and Waters, T.R. (1997), “Evaluation Of Spinal Loading During Lowering And Lifting,” Clinical Biomechanics, 13(3) 141-152.
  87. Fathallah, F.A., Marras, W.S., and Parnianpour M. (1997) “The Effect of Complex Dynamic Lifting and Lowering Characteristics on Trunk Muscles Recruitment,” Journal of Occupational Rehabilitation, 7(3), 121-138.
  88. Sparto P.J., Parnianpour M., Marras W.S., Granata K.P., Reinsel T.E., Simon S.R. (1998) “The Effect Of EMG-Force Relationships And Method Of Gain Estimation On The Predictions Of An EMG-Driven Model Of Spinal Loading,” Spine, 23(4), 423-429.
  89. Fathallah, F.A., Marras, W.S., and Parnianpour M. (1998) “An Assessment Of Complex Spinal Loads During Dynamic Lifting Tasks,” Spine, 23(6), 706-716. 
  90. Fathallah, F.A., Marras, W.S., and Parnianpour M. (1998) “The Role Of Complex, Simultaneous Trunk Motions In The Risk Of Occupationally-Related Low Back Disorders,” Spine, 23(9), 1035-1042.
  91. Bridger, R.S., Sparto, P., and Marras, W.S. (1998), “Spade Design, Lumbar Motions Risk Of Low-Back Injury And Digging Posture,” Occupational Ergonomics, 1(3), 157-172.
  92. Marras, W.S., and Davis, K. G., (1998) “Spine Loading During Asymmetric Lifting Using One vs. Two Hands,” Ergonomics, 41(6), 817-834.
  93. Marras, W.S., Davis, K.G., and Granata, K.P. (1998) “Trunk Muscle Activities During Asymmetric Twisting Motions,” Journal of Electromyography and Kinesiology, 8(4), 247-256.
  94. Sommerich, C.M., Marras, W.S., and Parnianpour, M. (1998) “A Method for Developing Biomechanical Profiles of Hand-Intensive Tasks,” Clinical Biomechanics, 13, 261-271.
  95. Davis, K.G., Marras, W.S., and Waters, T.R. (1998) “Reduction of Spinal Loads Through the use of Handles,” Ergonomics, 41(8), 1155-1168.
  96. Schoenmarklin R.W. and W.S. Marras (1999), "A Three-Dimensional EMG Assisted Dynamic Model of the Wrist Joint," Journal of Biomechanics, (in review).
  97. Marras, W.S., Fine. L.J., Ferguson, S.A. and Waters, T.R. (1999), “The Effectiveness of commonly used lifting assessment methods to identify industrial jobs associated with elevated risk of low-back disorders,” Ergonomics, 42(1), 229-245.
  98. Granata, K.P., and Marras, W.S., (1999) “Relation Between Spinal Load Factors And The High Risk Probability Of Occupational Low Back Disorder,” Ergonomics, 42(9), 1187-1199.
  99. Marras, W.S., Granata, K.P. and Davis, K.G. (1999) “Variability in Spine Loading Model Performance,” Clinical Biomechanics, 14(8), 505-514.
  100. Granata, K.P., Marras, W.S., and Davis, K.G. (1999)  “Variation in Spinal Load and Trunk Dynamics during Repeated Lifting Exertions,” Clinical Biomechanics, 14, 367-375.
  101. Marras, W.S., Davis, K.G., Kirking, B.C. and Bertsche P.K. (1999) “A Comprehensive Analysis of Low Back Disorder Risk and Spinal Loading During The Transferring and Repositioning of Patients Using Different Techniques,” Ergonomics, 42(7), 904-926.
  102. Marras, W.S., Granata, K.P., Davis, K.G., Allread, W.G. and Jorgensen, M.J. (1999) “The Effects of Box Features on Spine Loading During Order Selecting,” Ergonomics, 42(7), 980-996.
  103. Marras, W.S., Davis, K.G., Kirking, B.C. and Granata, K.P. (1999) “Spine Loading and Trunk Kinematics During Team Lifting,” Ergonomics, 42(10), 1258-1273.
  104. Marras, W.S., Ferguson, S.A., Gupta, P., Bose, S., Parnianpour, M., Kim, J., and       Crowell  R.R. (1999) “The Quantification of Low Back Disorder Using Motion Measures: Methodology and Validation,” Spine, 24(20), 2091-2100.
  105. Jorgensen, M.J. Davis, K.G., Kirking, B.C., Lewis, K.E., and Marras, W.S. (1999)   “Significance of Biomechanical and Physiological Variables During the Determination of Maximum Acceptable Weight of Lift,” Ergonomics, 42(9), 1216-1232.
  106. Fathallah, F.A., Marras, W.S., and Parnianpour, M. (1999) “Regression Models for Predicting Peak and Continuous Three-Dimensional Spinal Loads During Symmetric and Asymmetric Lifting Tasks,” Human Factors, 41(3), 373-388.
  107. Marras, W.S., Lewis, K.E., Ferguson, S.A., and Parnianpour, M. (2000) “Impairment Magnification During Dynamic Trunk Motions,” Spine, 25(5), 587-595. 
  108. Davis, K.G., Jorgensen, M.J. and Marras, W.S. (2000) “An Investigation of Perceived Exertion via Whole Body Exertion and Direct Muscle Force Indicators During the Determination of the Maximum Acceptable Weight of Lift,” Ergonomics, 43(2), 143-159.
  109. Jorgensen, M.J. and Marras, W.S. (2000) “ The Effect of Lumbar Back Support Tension on Trunk Muscle Activity,” Clinical Biomechanics, 15(4) 292-294.
  110. Marras, W.S., Jorgensen, M.J. and Davis, K.G. (2000) “The Effect of Foot Movement and an Elastic Lumbar Back Support on Spinal Loading During Free-Dynamic Symmetric and Asymmetric Lifting Exertions,” Ergonomics, 43(5), 653-668.
  111. Allread, W.G., Marras, W.S. and Burr, D. (2000) “Measuring Trunk Motions in Industry: Variability due to task factors, individual differences, and the amount of data collected,” Ergonomics, 43(6), 691-701. 
  112. Granata, K.P and Marras, W.S. (2000) “Cost-Benefit of Muscle Cocontraction in Protecting Against Spinal Instability,” Spine, 25(11), 1398-1404.
  113. Nelson, J.E., Treaster, D.E., Marras, W.S. (2000) “Finger Motion, Wrist Motion and Tendon Travel as a Function of Keyboard Angles,” Clinical Biomechanics, 15 (7), 489- 498.
  114. Treaster, D.E., Marras, W.S. (2000) “An Assessment of Alternate Keyboards Using Finger Motion, Wrist Motion and Tendon Travel,” Clinical Biomechanics, 15 (7), 499-503.
  115. Ferguson, S.A., Marras, W.S., and P. Gupta (2000) “Longitudinal Quantitative Measures   of the Natural Course of Low Back Pain Recovery,” Spine, 25(15), 1950-1956.
  116. Marras, W.S., Allread, W.G., Burr, D.L., and F.A. Fathallah (2000) “A Prospective Validation of a Low-Back Disorder Risk Model and an Assessment of Ergonomic Interventions Associated with Manual Materials Handling Tasks,” Ergonomics, 43 (11), 1866-1886.
  117. Marras, W.S., Davis, K.G., Heaney, C.A., Maronitis, A.B., and W.G. Allread (2000) “The Influence of Psychosocial Stress, Gender, and Personality on Mechanical Loading of the Lumbar Spine, Spine, 25 (23), 3045-3054.
  118. Marras, W.S. (2000) “Occupational Low Back Disorder Causation and Control,” Ergonomics, 43(7), 880-902.
  119. Davis, K.G. and Marras, W.S. (2000) “Assessment of the Relationship between Box Weight and Trunk Kinematics: Does a Reduction in Box Weight Necessarily Correspond to a Decrease in Spinal Loading?” Human Factors, 42(2), 195-208.
  120. Jorgensen, M.J., Marras, W.S., Granata, K.P., and Wiand, B. (2001) “MRI-Derived Moment-Arms of the Female and Male Spine Loading Muscles,” Clinical Biomechanics, 16(3), 182-193.
  121. Kovacs, K.M., Marras, W.S., Litsky, A.S., Gupta, P., and S.A. Ferguson (2001) “Localized Oxygen Use of Healthy and Low Back Pain Individuals During Controlled Trunk Movements” Journal of Spinal Disorders, 14(2) 150-158.
  122. Marras, W.S. and Davis, K.G. (2001) “A Non-MVC EMG Normalization Technique for the Trunk Musculature: Part 1. Method Development” Journal of Electromyography and Kinesiology, 11(1) 1-9.
  123. Marras, W.S., Davis, K.G., and A.B. Maronitis (2001) “A Non-MVC EMG Normalization Technique for the Trunk Musculature: Part 2. Validation and Use to Predict Spinal Loads” Journal of Electromyography and Kinesiology, 11(1) 11-18.
  124. Davis, K.G. and Marras, W.S. (2000) “The Effects of Motion on Trunk Biomechanics” Clinical Biomechanics 15 (10), 703-717.
  125. Marras, W.S., Jorgensen, M.J., Granata, K.P., and Wiand, B. (2001) “Female and Male Trunk Geometry: Size and Prediction of the Spine Loading Trunk Muscles Derived from MRI,” Clinical Biomechanics, 16, 38-46.
  126. Jorgensen, M.J., Marras, W.S., Granata, K.P. and Wiand, B. (2001) “ MRI-Derived Moment Arms of the Female and Male Spine Loading Muscles. Clinical Biomechanics, 16(3), 182-193.
  127. Ferguson, S.A., Gupta, P., Marras, W.S., and Heaney, C. (2001) “Predicting Recovery Using Continuous Low Back Pain Outcome Measures” The Spine Journal, 1(1), 57-65.
  128. Marras, W.S., (2001) “Spine Biomechanics, Government Regulation, and Prevention of Occupational Low Back Pain” The Spine Journal, 1(3) 163-165.
  129. Marras, W.S., Davis, K.G., Ferguson, S.A., Lucas, B.R. and Gupta, P. (2001) “Spine Loading Characteristics of Patients with Low Back Pain Compared with Asymptomatic Individuals”, Spine, 26(23), 2566-2574.
  130. Parnianpour, M., Ghosh, K., Barin, K., and Marras, W.S. (2001) “Quantification of Trunk Motion in Response to Complex Platform Perturbations while Holding Weights in an Upright Posture”, Biomedical Engineering, Applications, Basis and Communications, 13(1): 33-46.
  131. Radwin, R.G., Marras, W.S., and Lavender, S.A. (2002) “Biomechanical Aspects of Work-Related Musculoskeletal Disorders”, Theoretical Issues in Ergonomic Science, 2(2), 153-217.
  132. Ferguson, S.A., Gaudes-MacLaren, L.L., Marras, W.S., Waters, T.R. and Davis, K.G. (2002) “Spinal Loading When Lifting From Industrial Storage Bins”, Ergonomics, 45(6), 399-414. 
  133. Gallagher, S., Marras, W.S., Davis, K.G. (2002) “Effects of Posture on Dynamic Back Loading during a Cable Lifting Task”, Ergonomics, 45(5), 380-398.
  134. Kovacs, K., Splittstoesser, R., Maronitis, A., and Marras, W.S. (2002) “Grip Force and Muscle Activity Differences Due to Glove Type”, AIHA Journal, 63(3), 269-274.
  135. Lavender, S.A., Marras, W.S., and Sabol, R.J. (2002) “A Study of Female Mexican Anthropometric Measures Useful for Workstation Design in Light Manufacturing Facilities”, AIHA Journal, 63(3), 300-304.
  136. Davis, K.P., Marras, W.S., Heaney, C.A., Waters, T.R., and Gupta, P. (2002) “The Impact of Mental Processing and Pacing on Spine Loading”, Volvo Award for Low Back Pain Research, Spine, 27(23), 2645-2653.
  137. Marras, W.S., Davis, K.G., and Jorgensen, M. (2002) “Spine Loading and Gender”, Spine, 27(22), 2514-2520.
  138. Ferguson, S.A., Gallagher, S., and Marras, W.S. (2003) “Validity and Reliability of Sincerity Test for Dynamic Trunk Motions”, Disability and Rehabilitation. 25(4-5), 236-241.
  139. Marras, W.S., Davis, K.G., and Jorgensen, M. (2003) “Gender Influences on Spine Loads during Complex Lifting”, The Spine Journal, 3(2), 93-99.
  140. Lee, W., Karwowski, W., Marras, W.S., and Rodrick, D. (2003)  “A Neuro-Fuzzy Modeling of Myoelectrical Activity of Trunk Muscles Due to Manual Lifting Tasks”, Ergonomics, 46(1-3), 285-309.
  141. Jorgensen, M.J., Marras, W.S., Gupta, P., and Waters, T.R. (2003) “Cross-sectional area of the lumbar back muscles as a function of torso flexion”. Clinical Biomechanics, 18(4), 280-286.
  142. Jorgensen, M.J., Marras, W.S., Gupta, P., and Waters, T.R. (2003) “Sagittal Plane Moment-Arms of the Male and Female Lumbar Erector Spinae as a Function of Torso Flexion”. The Spine Journal, 3(5), 363-369.
  143. Davis, K.G., and Marras, W.S. (2003) “Partitioning the Contribution Role of Biomechanical, Psychosocial, and Individual Risk Factors in the Development of Spine Loads”. The Spine Journal, 3(5), 331-338.
  144. Marras, W.S. (2003) “The case for cumulative trauma in low back disorders”. The Spine Journal, 3(3), 177-179. 
  145. Davis, W.S., Splittstoesser, R.E., and W.S. Marras, (2003) “Kinematic Contribution and Synchronization of the Trunk, Hip, and Knee During Lifting Below Waist Level.” Occupational Ergonomics, 3(2), 99-103.
  146. Marras, W.S., Ferguson, S.A., Burr, D., Davis, K.G., and Gupta, P. (2004) “Spine Loading in Low Back Pain Patients During Asymmetric Lifting Exertions”. The Spine Journal, 4(1), 64-75.
  147. Ferguson, S.A. and Marras, W.S. (2004) “Revised Protocol for the Kinematic Assessment of Impairment”. The Spine Journal, 4(2), 163-169.
  148. Jorgensen, M.J., Marras, W.S., Smith, F.W., and M.H. Pope (2005) “Sagittal Plane Moment Arms of the Female Lumbar Region Rectus Abdominis in an Upright Neutral Torso Posture. Clinical Biomechanics, 20(3) 242-246.
  149. Gallagher, S., Marras, W.S., Litsky, A.S., and Burr, D. (2005) “Torso flexion loads and the fatigue failure of human lumbosacral motion segments.” Spine, 30(20) 2265-2273.
  150. Marras, W.S. (2004) “State-of-the art research perspectives on musculoskeletal disorder causation and control: the need for an integrated understanding of risk” Journal of Electromyography and Kinesiology, 14(1), 1-5.
  151. Ferguson, S.A., Marras, W.S., and  Burr, D. (2004) "The influence of individual low back health status on workplace trunk kinematics and risk of low back disorder" Ergonomics, 47(11)1,226-1237.
  152. Marras, W.S., Ferguson, S.A., Burr, D., Davis, K.G., and Gupta, P. (2005) “Functional Impairment as a Predictor of Spine Loading.” Spine 30(7) 729-737.
  153. Ferguson, S.A., Marras, W.S., and Burr, D. (2005) “Workplace Design Guidelines for Asymptomatic vs. Low back Injured Workers.” Applied Ergonomics, 36(1) 85-95.
  154. Marras, W.S. (2005) “The Future of Research in Understanding and Controlling Work-Related Low Back Disorders” Ergonomics, 48(5), 464-477.
  155. Ferguson, S.A., Marras, W.S., Burr, D. Davis, K. and Gupta, P (2004) “Differences in Motor Recruitment and Resulting Kinematics between Low Back Pain Patients and Asymptomatic Participants During Lifting Exertions” Clinical Biomechanics, 19(10), 992-999.
  156. Allread, W.G., Wilkins III, J.R., Waters, T.R. and Marras W.S. (2004) “Physical Demands and Low-Back Injury Risk Among Children and Adolescents Working on Farms”, Journal of Agricultural Safety and Health, 10(4), 257-274.
  157. Zurada, J., Karwowski, W., and Marras, W.S. (2005) “Classification of Jobs with Risk of Low Back Disorders by Applying Mining Techniques,” Occupational Ergonomics. 5(1), 1-15.
  158. Campbell-Kyureghyan, N., Marras, W.S., Burr, D., and Jorgensen, M.J. (2005) “The Prediction of Lumbar Spine Geometry: Method Development and Validation.” Clinical Biomechanics, 20,455-464.
  159. Ferguson, S.A., Marras, W.S., and Burr, D.L. (2005) “Differences Among Outcome Measures In Occupational Low Back Pain,” Journal of Occupational Rehabilitation, 15(3) 329-341.
  160. Fujishiro, K, Weaver, J.L., Heaney, C.L., Hamrick, C.A., and Marras, W.S. (2005)“The Effect of Ergonomic Interventions in Healthcare Facilities on Musculoskeletal Disorders.” American Journal of Industrial Medicine,48, 338-347.
  161. Davis, K.G., and Marras, W.S. (2005) “Load Spatial Pathway and Spine Loading: How Does Lift Origin and Destination Impact Low Back Response? Ergonomics, 48(8),1031-1046.
  162. Treaster, D. E., Marras, W.S., Burr, D., Sheedy, J. E., and Hart, D. (2006) “ Myofascial Trigger Point Development from Low-Level Visual and postural Exertion” Journal of Electromyography and Kinesiology, 16(2) 115-124.
  163. Gallagher, S., Marras W.S., Litsky, A.S., and Burr, D. (2006) “An Exploratory Study of Loading and Morphometric Factors Associated with Specific Failure Modes in Fatigue Testing of Lumbar Motion Segments.” Clinical Biomechanics, 21(3) 228-234.
  164. Allread, W.G., and Marras W.S. (2006) “Does Personality Affect the Risk of Developing Musculoskeletal Disorders?” Theoretical Issues in Ergonomics Science, 7(2), 149-167.
  165. Marras, W.S., Parakkat, J., Chany, A.M., Yang, G, Burr, D. and Lavender S.A. (2006) “Spine Loading as a Function of Lift Frequency, Exposure Duration, and Work Experience” Clinical Biomechanics, 21(2) 345-352.
  166. Chany, A.M., Parakkat, J., Yang, G., Burr, D., and Marras, W.S. (2006) “Changes in Spine Loading Patterns throughout the Workday as a Function of Experience, Lift Frequency, and Personality,” The Spine Journal, 6(3), 296-305.
  167. Parakkat, J., Chany, A.M., Yang, D., Burr, D., and Marras, W.S. (2007) “The Influence of Lift Frequency, Lift Duration, and Work Experience on Discomfort Reporting,” Ergonomics, 50(3), 396-409.
  168. Korkmaz, S.V., Hoyle, J.A., Knapik, G.G., Splittstoesser, R.E., Yang, G., Trippany, D.R., Lahoti, P.,  Sommerich, C.M., Lavender, S.A. and Marras, W.S. (2006) “Baggage handling in an airplane cargo hold: An ergonomic intervention study” International Journal of Industrial Ergonomics, 36(4), 301-312.
  169. Chany, A.M.L., Marras, W.S., Burr, D.L. (2006) “The Effect of Cellular and Landline Phone Design on Upper Extremity Discomfort and Muscle Fatigue.” Human Factors, 49(4), 602-618.
  170. Karwowski, W., Gaweda, A., Marras, W.S., Davis, K., Zurada, J.M. and Rodrick, D. (2006) “A Fuzzy Relational Rule Network Modeling of Electromyographical Activity of Trunk Muscles in Manual Lifting Based on Trunk Angles, Moments, Pelvic Tilt and Rotation Angels.” International Journal of Industrial Ergonomics, 36, 847-859.
  171. Splittstoesser, R.E., Yang, G., Knapik, GG, Trippany, D.R., Hoyle, J.A.,  Lahoti, P., Korkmaz, S.V., . Sommerich, C.M., Lavender, S.A., and Marras, W.S. (2007) "Spinal Loading During Manual Materials Handling in a Kneeling Posture," Journal of Electromyography and Kinesiology, 17, 25-34.
  172. Yang, G., Chany, A-M., Parakkat, J., Burr, D., and Marras, W.S. (2007) “The Effects of Work Experience, Lift Frequency and Exposure Duration on Low Back Muscle Oxygenation.” Clinical Biomechanics, 22, 21-27.
  173. Gallagher, S., Marras, W.S., Litsky, A.S., Burr, D., Landoll, J, and Matkovic, V., (2007)  “A Comparison of Fatigue Failure Responses of Young and Old Lumbar Motion Segments in Simulated Flexed Lifting,” Spine, 32(17), 1832-1839 .
  174. Hou, Y., Zurada, JM, Karwowski, W, Marras, W.S., and Davis, K. (2007) “Estimation of the Dynamic Spinal Forces Using A Recurrent Fuzzy Neural Network” IEEE Transactions on Systems, Man, and Cybernetics – Part B: Cybernetics, 37(1), 100-109.
  175. Marras, W.S., Ferguson, S.A., Burr, D., Schabo, P, and Maronitis, A. (2007) “Low Back Pain Recurrence in Occupational Environments,” Spine, 32 (21), 2387-2397.
  176. Theado, E.W., Knapik, G.G., and Marras, W.S. (2007) “Modification of an EMG-assisted biomechanical model for pushing and pulling,” International Journal of Industrial Ergonomics, 37(11-12) 825-831.
  177. Hou, Y., Zurada, JM, Karwowski, W, Marras, W.S., and Davis, K. (2007) “Identification of Key Variables Using Fuzzy Average With Fuzzy Cluster Distribution.” IEEE Transactions of Fuzzy Systems. 15(4), 673-685.
  178. Garg, A., Gerr, F., Katz, JN, Marras, W.S. , and Silverstein, B. (2007) “Low Back Pain and the Workplace,” JAMA, 298(4), 403-404.
  179. Marras, W.S., Cutlip, R.G., Burt, S.E., and T.R. Waters (2009) “National Occupational Research Agenda (NORA) Future Directions in Occupational Musculoskeletal Disorder Health Research,” Applied Ergonomics, 40, 15-22.
  180. Marras, W.S. (2008) “A Critical Review of a Pivotal Scientific Contribution: Liles and Associates 24 years Later,” Human Factors, 50(3) 393-396.
  181. Knapik, G.G. and W,S. Marras (2008) “Spine Loading at Different Lumbar Levels During Pushing and Pulling,” Ergonomics, (in press).
  182. Marras, W.S., Knapik, G.G. and S. Ferguson (2008) “Lumbar Spine Forces during Manoeuvring of Ceiling-based and Floor-based Patient Transfer Devices.” Ergonomics, (in press).
  183. Marras, W.S., Knapik, G.G., and S.A Ferguson (2008) “Loading along the Lumbar Spine as Influenced by Speed, Control, load Magnitude, and Handle Height during Pushing.” Clinical Biomechanics, (in press).

Books:     Return to top of page

  1. Marras, W.S., Karwowski, W., Smith, J.L., and L. Pacholski (eds.) The Ergonomics of Manual Work, Taylor and Francis, London, 1993.
  2. Karwowski, W. and Marras, W.S. (eds.) Occupational Ergonomics Handbook, CRC Press, New York, 1999
  3. Karwowski, W. and Marras, W.S. (eds.) Occupational Ergonomics: Principles of Work Design, CRC Press, Boca Raton, FL, 2003
  4. Karwowski, W. and Marras, W.S. (eds.) Occupational Ergonomics: Design and Management of Work Systems, CRC Press, Boca Raton, FL, 2003
  5. Karwowski, W. and Marras, W.S. (eds.) Occupational Ergonomics: Engineering and Administrative Controls, CRC Press, Boca Raton, FL, 2003
  6. Marras, W.S. and Karwowski, W. (eds.) Occupational Ergonomics Handbook: Fundamentals and Assessment Tools for Occupational Ergonomics. (Second Edition), CRC Press, Boca Raton, FL, 2006
  7. Marras, W.S. and Karwowski, W. (eds.) Occupational Ergonomics Handbook: Interventions, Controls, and Applications in Occupational Ergonomics. (Second Edition), CRC Press, Boca Raton, FL, 2006
  8. Marras, W.S., The Working Back: A Systems View, Wiley, New York, NY, 2008.

Book Chapters:      Return to top of page

  1. Marras, W. S., (1982), "Evaluation of Controlled Static Exertions in Various Muscle Groups," in Easterby, R., Kroemer, K., and D. Chaffin, (eds.), Anthropometry and Biomechanics, Plenum Press, New York, 151-156.
  2. Marras, W. S., and A. I. King, (1988), "Biomechanical Models," in Kroemer, K. H. E., Snook, S. H., Meadows, S. R. and S. Deutsh (eds.), Ergonomic Models of Anthropometry, Human Biomechanics and Operator-Equipment Interfaces, National Academy Press, Washington, DC, 19-42.
  3. Marras, W. S., (1989), "Towards an Understanding of Internal Trunk Responses to Dynamic Trunk Activity," in K. H. Kroemer, J. D. McGlothlin and T. G. Bobick (eds.), Understanding and Preventing Back Trauma: Theory and Application of Biodynamics, American Industrial Hygiene Association, Akron, OH.
  4. Marras, W. S., (1990), "Anthropometry" Industrial Engineering Terminology, Industrial Engineering and Management Press, Norcross, GA.
  5. Marras, W. S., (1990), "Biomechanics" Industrial Engineering Terminology, Industrial Engineering and Management Press, Norcross, GA.
  6. Marras, W. S., (1990), "Human Factors" Industrial Engineering Terminology, Industrial Engineering and Management Press, Norcross, GA.
  7. Marras, W. S., (1992), "Chapter 1: Introduction to Electromyography in Ergonomics" in G.  L.  Soderberg (ed.), Selected Topics in Surface Electromyography for Use in the Occupational Setting: Expert Perspectives, DHHS (NIOSH) Publication No. 91-100. Washington, D.C. 
  8. Marras, W. S., (1992), "Chapter 7: Applications of EMGs in Ergonomics" in G. L. Soderberg (ed.), Selected Topics in Surface Electromyography for Use in the Occupational Setting: Expert Perspectives, DHHS (NIOSH) Publication No. 91-100. Washington, D.C. 
  9. Marras, W. S., (1992), "Dynamic Variables in Ergonomics" OCCUPATIONAL MEDICINE: State of the Art Reviews, Vol. 7, No. 4, October-December, Hanley and Belfus, Inc.  Philadelphia, PA.
  10. Andersson G.B. and Marras W.S. (1996), "Occupational Biomechanics" The Lumbar Spine, (2nd Edition) Weinstein, J. N. and Wiesel S.W. (eds), W.B. Saunders Company, Philadelphia, PA.
  11. Granata K.P. and Marras W.S. (1996), “Biomechanical Models in Ergonomics” in Occupational Ergonomics, Marcel Dekker, Inc., New York, N.Y.
  12. Marras, W.S., (1997), "Ergonomics: Workplace Analysis" in Musculoskeletal Disorders in the Workplace: Principles and Practice, Nordin, M., Andersson G.B., and Pope, M.H. (eds.) Mosby Year Book Inc. New York.
  13. Marras, W.S., (1997) “Biomechanics of the Human Body” in Handbook of Human   Factors and Ergonomics, (second edition) G. Salvendy (ed.), Wiley Interscience,  New York.
  14. Karwowski, W and Marras, W.S., (1997) “Work Related Musculoskeletal Disorders of the Upper Extremity” in Handbook of Human   Factors and Ergonomics, (second edition) G. Salvendy (ed.), Wiley Interscience,  New York.
  15. Marras, W.S. (1999),  “Occupational Biomechanics” in Occupational Ergonomics Handbook, Karwowski, W. and Marras W.S. (eds.) CRC Press, New York.
  16. Marras, W.S. (1999),  “Dynamic Workplace Factors in Manual Lifting” in Occupational Ergonomics Handbook, Karwowski, W. and Marras W.S. (eds.) CRC Press, New York.
  17. Marras, W.S., Allread, W.G., and Ried, R. (1999),  “The Use of the Lumbar Motion Monitor” in Occupational Ergonomics Handbook, Karwowski, W. and Marras W.S. (eds.) CRC Press, New York.
  18. Marras, W.S. (2001) ” The Assessment of Loads on the Lumbar Spine during Dynamic Work” in The Encyclopedia of Ergonomics, Karwowski, W. (ed.)
  19. Marras, W.S. (2004), “Occupational Ergonomics” in The Lumbar Spine, Herkowitz, HN, Dvorak, J, Bell, G.R., Nordin, M, and Grob, D. (eds), Lippincott Williams and Wilkins, Philadelphia.
  20. Sommerich, C.M. and Marras, W.S. (2004) “Electromyography and Muscle Force” in Muscle Strength, S. Kumar (ed.) CRC Press, New York. Marras, W.S., (2005) “Biomechanics of the Human Body” in Handbook of Human   Factors and Ergonomics, (Third edition) G. Salvendy (ed.), Wiley Interscience,  New York.
  21. Sommerich, C.M. and Marras, W.S., (2005) “Work Related Musculoskeletal Disorders of the Upper Extremity” in Handbook of Human   Factors and Ergonomics, (Third edition) G. Salvendy (ed.), Wiley Interscience,  New York.
  22. Marras, W.S. and Allread, W.G. (2005) “Lumbar Motion Monitor” in Handbook of Human Factors and Ergonomics Methods, Stanton, N, Hedge, A, Brookhuis, K, Salas, E, and Hendrick, H. CRC Press, Boca Raton, FL.
  23. Marras, W.S. (2006) “The Biomechanical Basis of Ergonomics Logic” in The Occupational Ergonomics Handbook (Second Edition): Fundamentals and Assessment Tools for Occupational Ergonomics. Marras, W.S. and Karwowski, W. (eds.), Taylor and Francis (CRC Press), Boca Raton, FL, 11-1 to 11-43.
  24. Marras, W.S. and Hamrick, C. (2006) “The ACGIH TLV for Low Back Risk” in The Occupational Ergonomics Handbook (Second Edition): Fundamentals and Assessment Tools for Occupational Ergonomics. Marras, W.S. and Karwowski, W. (eds.), Taylor and Francis (CRC Press), Boca Raton, FL, 50-1 to 50-15.
  25. Marras, W.S. and Allread, W.G. (2006) “Industrial Lumbar Motion Monitor” in The Occupational Ergonomics Handbook (Second Edition): Fundamentals and Assessment Tools for Occupational Ergonomics. Marras, W.S. and Karwowski, W. (eds.), Taylor and Francis (CRC Press), Boca Raton, FL, 49-1 to 49-25.
  26. Ferguson, S.A. and Marras, W.S. (2006) “Clinical Lumbar Motion Monitor” in The Occupational Ergonomics Handbook (second editions): Interventions, Controls, and Applications in Occupational Ergonomics. Marras, W.S. and Karwowski, W. (eds), Taylor and Francis (CRC Press), Boca Raton, FL 37-1 to 37-17.
  27. Jorgensen, M.J. Marras, W.S., Allread, G.A., and Stuart-Buttle, C. (2006) “Grocery Distribution Centers,” in The Occupational Ergonomics Handbook (second editions): Interventions, Controls, and Applications in Occupational Ergonomics. Marras, W.S. and Karwowski, W. (eds), Taylor and Francis (CRC Press), Boca Raton, FL 45-1 to 45-22.
  28. Marras, W.S. and Radwin, R.G. (2006) “Biomechanical Modeling” in Annual Review of Ergonomics, in Nickerson, R. (ed.) The Human Factors and Ergonomics Society Press, Santa Monica, CA. pg 1-88.
  29. Marras, W.S., Knapik, G.G., and J. Gabriel (2008) The Development of a Personalized Hybrid EMG-Assisted/Finite Element Biomechanical Model to Assess Surgical Options” in Yue, J.J. Bertagnoli, R, McAffee, P.C., and An H.S. (eds.) Motion Preservation Surgery of the Spine: Advanced Techniques and Controversies. Saunders/Elsevier Inc. Philadelphia, PA. pg 687-694.

Refereed conference proceedings (selected):      pre-1990        1990-1999        2000-present        Return to top of page

  1. "Tests to Distinguish Between 'True' and 'Faked' Maximum Muscle Strength Exertions," Human Factors Society 22nd Annual Meeting, Southfield, MI, Oct. 16-19, 1978.
  2. "Evaluation of Controlled Static Exertions in Various Muscle Groups," NATO Symposium on Anthropometry and Biomechanics, Cambridge, England, July 5-11, 1980.
  3. "An Analysis of Isometric and Isokinetic Spinal Lifting Motions," Human Factors Society 26th Annual Meeting, Seattle WA, Oct. 25-29, 1982.
  4. "A Biomechanical Analysis of Isometric and Isokinetic Lifting Motion," Institute of Industrial Engineers, Fall IE Conference, Cincinnati, OH, Nov. 14-17, 1982.
  5. "Measurements of Load Upon the Lumbar Spine During Isometric and Isokinetic Lifting Activities," 7th Annual Conference of the American Society of Biomechanics, Mayo Clinic, Rochester, MN, Sept. 23-30, 1983.
  6. "A Model-Experiment Comparison of Loads Upon the Lumbar Spine," Human Factors Society 27th Annual Meeting, Norfolk, VA, Oct. 10-14, 1983.
  7. "Biomechanical Modeling in Ergonomics," Seminar on Integrated Ergonomic Modeling", National Academy of Sciences, Washington, D.C., June 17-18, 1985.
  8. "Data Acquisition Control Software," Human Factors Society 29th Annual Meeting, Baltimore, MD, September 29 - October 3, 1985.
  9. "Statistical Analysis for Biomechanical Data," Human Factors Society 29th Annual Meeting, Baltimore, MD, September 29 -October 3, 1985.
  10. "An Experimental Evaluation of Method and Tool Effects in Spike Maul Use," 9th Annual conference of the American Society of Biomechanics, Ann Arbor, MI, October 2-4, 1985
  11. "Measurements of Spine Loading Components During the Usage of Large Hand Tools," in W. Karwowski (ed.), Trends in Ergonomics/Human Factors III, also presented at the Annual International Industrial Ergonomics and Safety Conference '86, Louisville, KY, June 12-14, 1986.
  12. "The Effects of Expectation on Trunk Loading,” Proceedings of the Human Factors Society 30th Annual Meeting, Dayton, Ohio, Sept. 29 - Oct. 3, 1986.
  13. "The Assessment of Strength Under Dynamic Conditions," Proceedings of the Human Factors Society 30th Annual Meeting, Dayton, Ohio, Sept. 29 Oct. 3, 1986.
  14. "An Analysis of Handtool Injuries in the Underground Mining Industry," Proceedings of the Human Factors Society 30th Annual Meeting, Dayton, Ohio, Sept. 29 - Oct. 3, 1986.
  15. "An Examination of Method of Use and Tool Design on Track Tool Performance and Back Stress," Proceedings of the Human Factors Society 30th Annual Meeting, Dayton, Ohio, Sept. 29 - Oct. 3, 1986.
  16. "Networks of Internal Loading Activities Under Controlled Motion Conditions," American Industrial Hygiene Association Conference, Montreal, Canada, June 4, 1987.
  17. "Analysis of Hand Tool Injuries in the Underground Mining Industries," American Industrial Hygiene Association conference, Montreal, Canada, June 2, 1987.
  18. "The Development of a Three Dimensional Lumbar Motion Monitor," International Industrial Ergonomics and Safety Conference, Miami, Florida, June 10, 1987.
  19. "The Preparation, Recording and Analysis of the EMG Signal," in S. Asfour (ed.), Trends in Ergonomics/Human Factors IV, also presented at the International Industrial Ergonomics and Safety Conference, Miami, Florida, June 11, 1987.
  20. "Measurement of Hand and Wrist Position by a Wrist Monitor," Proceedings of the IX International conference on Production Research, Cincinnati, Ohio, Aug. 17-20, 1987.
  21. "Ergonomic Analysis of Jack Leg Drill," Bureau of Mines Information Circular (IC 9145).  Human Engineering and Human Resources Management in Mining Proceedings:  BOM Technology Transfer Seminar, Pittsburgh, PA, July 7-8, 1987; St. Louis, MO, July 15-16, 1987 and San Francisco, CA, July 21-22, 1987, pp. 33-43.
  22. "Internal Trunk Loading Sequence Response to Lifting Motions," Proceedings of 31st Annual Meeting Human Factors Society, New York, NY, Oct. 19-23, 1987.
  23. "The Effects of Seam Height, Scaling Method and Bar Weight Distribution on Scaling Effectiveness and Electromyographic Activity," Proceedings of 31st Annual Meeting, Human Factor Society, New York, NY, Oct. 19-23, 1987.
  24. "Towards an Understanding of Internal Trunk Responses to Dynamic Trunk Activity," 1988 American Industrial Hygiene Annual Meeting, San Francisco, CA, May 15-20, 1988.
  25. "Transfer Functions of Trunk Muscle Extensions During Motion," in F. Aghazadeh (ed.), Trends in Ergonomics/Human Factors V, also presented at Annual International Industrial Ergonomics and Safety Conference '88, New Orleans, LA, June 8-10, 1988.
  26. "The Effects of Gloves on Grip Strength and Muscle Activity," Proceedings of the Human Factors Society 32nd Annual Meeting, Anaheim, CA, Oct. 2428, 1988, pg 647-650.
  27. "Trunk Muscle Response to Trunk Asymmetry, Velocity and Load Level," Proceedings of the Human Factors Society 32nd Annual Meeting, Anaheim, CA, Oct. 24-28, 1988, pg 660-664.
  28. "Trunk Muscle Loading in Non-Sagittally Symmetric Postures as a Result of Sudden Unexpected Loading Conditions," Proceedings of the Human Factors Society 32nd Annual Meeting, Anaheim, CA, Oct. 24-28, 1988, pg 665-669.
  29. "Time Sequence Loading Patterns of the Trunk During Motion," 35th Annual Meeting, Orthopaedic Research Society, Las Vegas, NV, February 6-9, 1989.
  30. "Trunk Structure Responses to Trunk Angular Acceleration as a Function of Trunk Asymmetry and Trunk Angle," American Industrial Hygiene Association Annual Meeting, St. Louis, MO, May 21-26, 1989.
  31. "Towards the Assessment Of Dynamic Muscle Strength," American Industrial Hygiene Association Annual Meeting, St. Louis, MO, May 21-26, 1989.
  32. "Trunk Strength as a Function of Trunk Asymmetry and Trunk Velocity During Concentric and Eccentric Exertions," Advances in Industrial Ergonomics and Safety I, (ed A. Mital), Taylor and Francis, 1989, also presented at Annual International Industrial Ergonomics and Safety Conference '89, Cincinnati, OH, June 5-9, 1989.
  33. "Quantitative Measures of Hand/Wrist Motions," RESNA 12th Annual Conference, June 25-30, 1989.
  34. "Three Dimensional Measures of Trunk Motion Components During Manual Materials Handling in Industry," Proceedings of the Human Factors Society 33rd Annual Meeting, Denver, CO, Oct. 16-20, 1989.
  35. "The Effects of Fatigue on Muscle Groups Under Dynamic Exertions," Proceedings of the Human Factors Society 33rd Annual Meeting, Denver, CO, Oct.  16-20, 1989.
  36. "Validation of a Hand/Wrist Electromechanical Goniometer," Proceedings of the Human Factors Society 33rd Annual Meeting, Denver, CO, Oct. 16-20, 1989.
  37. "Trunk Responses to Asymmetric Motion," Proceeding of Orthopaedic Research Society Annual Meeting, New Orleans, LA, Feb. 5-8, 1990.
  38. "Wrist Movements and Cumulative Trauma Disorders," Proceedings of Occupational Disorders of the Upper Extremities, Ann Arbor, MI, March 29-30, 1990.
  39. "A Biomechanical Analysis of Voluntary Trunk Acceleration," International Society for the Study of the Lumbar Spine Annual Meeting, Boston, MA, June 13-17, 1990.
  40. "A Model of Spine Loading During Asymmetric Motion," Annual International Industrial Ergonomics and Safety Conference '90, Montreal, Quebec, Canada, June 10-13, 1990.
  41. "A Dynamic Biomechanical Model of the Wrist Joint," Proceedings of the Human Factors Society 34th Annual Meeting, Orlando FL, October 8-12, 1990.
  42. "Muscle Activities During Asymmetric Trunk Angular Accelerations,"    Proceedings of the Annual Industrial Ergonomics and Safety Conference, Advances in Industrial Ergonomics and Safety III, Lake Tahoe, NV, June 10-14, 1991.
  43. "Towards an Understanding of Spine Loading During Occupationally related Dynamic Trunk Activity," International Ergonomics Association, 11th Congress, Paris, France, July 15-20, 1991.
  44. "Wrist Motions and CTD Risk in Industrial and Service Environments," International Ergonomics Association, 11th Congress, Paris, France, July 15-20, 1991.
  45. "Muscle and Intra-Abdominal Activities During Asymmetric Trunk Angular Accelerations," International Ergonomics Association, 11th Congress, Paris, France, July 15-20, 1991.
  46. "Trunk Muscle Activity and Intra-Abdominal Activity During Changes in Trunk Position, Velocity and Acceleration,” XIIIth International Congress on Biomechanics, The University of Western Australia, Perth, Australia, December 9-13, 1991.
  47. "The Role of Trunk Motion in Occupationally-Related Low Back Disorder," International Society for the Study of the Lumbar Spine, 19th Annual Meeting, Chicago, IL, May 20-24, 1992.
  48. "Trunk Muscle Activity and Intra-Abdominal Activity During Changes in Trunk Position, Velocity and Acceleration," Advances in Industrial Ergonomics and Safety IV (S. Kumar, ed) Taylor and Francis, 1992.
  49. "Trunk Muscle Response to Axial Twisting Motion," Advances in Industrial Ergonomics and Safety IV (S. Kumar, ed) Taylor and Francis, 1992.
  50. "Modeling the Stochastic Nature of Trunk Muscle Forces," Proceedings of the Human Factors Society 36th Annual Meeting-1992, Human Factors Society Inc., Santa Monica, CA, 747-751.
  51. "Industrial Quantification of Occupationally-Related Low Back Disorder Risk Factors," Proceedings of the Human Factors Society 36th Annual Meeting-1992, Human Factors Society Inc., Santa Monica, CA, 757-760.
  52. "Towards an Understanding of Spine loading During Occupationally Related Dynamic Trunk Activities," (Plenary Address) Proceedings of the International Ergonomics Association World Conference on Ergonomics Of Materials Handling and Information Processing at Work, Warsaw, Poland, Taylor and Francis, London, 25-32, June, 1993.
  53. "Use of Isokinetic Dynamometry to Quantify Internal Trunk Forces During Bending," Proceedings of the International Ergonomics Association World Conference on Ergonomics Of Materials Handling and Information Processing at Work, Warsaw, Poland, Taylor and Francis, London, 93-96, June, 1993.
  54. "A Stochastic Model of Trunk Muscle Coactivation During Trunk Bending Motions in the Sagittal Plane," Proceedings of the International Ergonomics Association World Conference on Ergonomics Of Materials Handling and Information Processing at Work, Warsaw, Poland, Taylor and Francis, London, 159-162, June, 1993.
  55. "Three Dimensional Dynamic Trunk Motions, Workplace Factors, and Occupational Low Back Disorder," Proceedings of the International Ergonomics Association World Conference on Ergonomics Of Materials Handling and Information Processing at Work, Warsaw, Poland, Taylor and Francis, London, 155-158, June, 1993.
  56. "A Stochastic Model of Trunk Muscle Coactivation During Trunk Banding Motions," Proceedings of the International Society for the Study of the Lumbar Spine Annual Meeting, Marseilles, France, June, 1993.
  57. "Three-Dimensional Dynamic Trunk Motions and the Risk of Occupationally-Related Low Back Disorder," Proceedings of the International Society of Biomechanics XIVth Congress, Paris, France, 824-825, July, 1993.
  58. "Wrist Motions in Industry: Variance Between Jobs and Subjects," Proceeding of the Human Factors and Ergonomics Society 37th Annual Meeting, Seattle WA, October 1993.
  59. "Variation in Trunk Mobility Throughout The Work Day," Proceeding of the Human Factors and Ergonomics Society 37th Annual Meeting, Seattle WA, October 1993.
  60. "A Catastrophe Theory-Based Model for Quantification of Risk of Low Back Disorders at Work," Proceeding of the Human Factors and Ergonomics Society 37th Annual Meeting, Seattle WA, October 1993.
  61. "Coactivity Effects Upon Carpal Tunnel Contact Forces," Proceeding of the Human Factors and Ergonomics Society 37th Annual Meeting , Seattle WA, October 1993.
  62. "Quantification of Hand Grip Force Under Dynamic Conditions," Proceeding of the Human Factors and Ergonomics Society 37th Annual Meeting , Seattle WA, October 1993.
  63. "The Influence of Anti-Fatigue Mats on Back and Leg Fatigue," Proceeding of the Human Factors and Ergonomics Society 37th Annual Meeting, Seattle WA, October 1993.
  64. “The Influence of Trunk Muscle Coactivity Upon Dynamic Spinal Loads,” Proceeding of 13th Southern Biomedical Engineering Conference, Washington D.C., April 16-17, 1994
  65. “Muscle Activity and Spinal Loads During Dynamic Torsional Exertions,” Proceedings of American Society of Biomechanics Annual Meeting, October 13-15, 1994.  
  66. “Unique Anthropometric Characteristics of Industrial Population in the United States,” Proceedings of the 3rd Pan -Pacific Conference on Occupational Ergonomics, Soel Korea, November 13-17, 1994.
  67. “Variability of Controlled Trunk Movement as a Measure of Sincerity of Effort During Evaluation of Capacity of Low -Back Patients,” Proceedings of the 3rd Pan-Pacific Conference on Occupational Ergonomics, Soel Korea, November 13-17, 1994.
  68. “Dynamic Factors of Occupationally-Related Upper Limb Disorders,” Proceedings of International Conference on Occupational Disorders of the Upper Extremities, San Francisco, CA, December 1-2, 1994
  69. Keynote Paper “The Effects of Dynamic Trunk Motion on the Risk of Low Back Disorders During Lifting,” Proceedings of the Australian Ergonomics Society Annual Meeting, Sydney, Australia, December 5-8, 1994.
  70. Granata, K.P, Marras, W.S., and Davis, K.G., “The Influence of Back Belts on Dynamic Lifting Motions,” Conference Proceedings 19th Annual Meeting of the American Society of Biomechanics, Stanford California, August 24-26, 1995.
  71. Marras, W.S., and Granata, K.P., “A Biomechanical Assessment of Axial Twisting Exertions,” Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting, San Diego, California, October 9-13, 1995.
  72. Marras, W.S., and Granata, K.P., “ Changes in Spine Loading During Repetitive Exertions,” International Society for the Study of the Lumbar Spine Abstracts of the Annual Meeting, Burlington, Vermont, June 25 - 29, 1996.  
  73. Fathallah, F. A., Marras, W.S., and Parnianpour, M., “Spinal Combined Motions and Risk of Occupational Low Back Disorders,” International Society for the Study of the Lumbar Spine Abstracts of the Annual Meeting, Burlington, Vermont, June 25 - 29, 1996.
  74. Fathallah, F. A., Marras, W.S., and Parnianpour, M., “Spinal Combined Loading During Symmetric and Asymmetric Lifting Tasks,” International Society for the Study of the Lumbar Spine Abstracts of the Annual Meeting, Burlington, Vermont, June 25 - 29, 1996.
  75. Marras, W.S., Granata, K.P., Davis, K.P., Davis, K.G., Allread, W.G., and Jorgensen, M.J. “The Effects of Box Weight, Size, and Handle Coupling on Spine Loading During Depalletizing Operations,” Proceeding of the Human Factors and Ergonomics Society, 40th Annual Meeting, Philadelphia, PA, September 2 - 6, 1996.
  76. Allread, W.G., Marras, W.S., Granata, K.P., Davis, K.G., and Jorgensen, M. J. “The Effects of Box Differences and Employee Job Experience on Trunk Kinematics and Low Back Injury Risk during Depalletizing Operations,” Proceeding of the Human Factors and Ergonomics Society, 40th Annual Meeting, Philadelphia, PA, September 2 - 6, 1996.
  77. Granata, K.P., Marras, W.S., and Ferguson, S.A. “Relation Between Biomechanical Spinal Load Factors and Risk of Occupational Low Back Disorders,” Proceeding of the Human Factors and Ergonomics Society, 40th Annual Meeting, Philadelphia, PA, September 2 - 6, 1996.
  78. Fathallah, F.A., Marras, WS. and Parnianpour, M. “Three-Dimensional Spinal Loading During Complex Lifting Tasks,” Proceeding of the Human Factors and Ergonomics Society, 40th Annual Meeting, Philadelphia, PA, September 2 - 6, 1996.
  79. Ferguson, S.A., Marras, W.S., and Crowell, R.R. “Three-Dimensional Functional Capacity of Normals and Low Back Pain Patients,” Proceeding of the Human Factors and Ergonomics Society, 40th Annual Meeting, Philadelphia, PA, September 2 - 6, 1996.
  80. Granata, K.P., Marras, W.S. and Kirking, B.  “Influence of Experience on Lifting Kinematics and Spinal Loading,” Conference Proceedings of the Twentieth Annual Meeting of the American Society of Biomechanics, Atlanta, GA, October 17-19, 1996.
  81. Marras, W.S. “Spine Loading During Whole-Body Free-Dynamic Lifting,” Proceedings of the 11th Congress of the International Society of Electrophysiology and Kinesiology, Enschede, The Netherlands, October 27-30, 1996.
  82. Marras, W.S. and Granata, K.P. “Spine Loading During Trunk Lateral Bending Motions,” Transactions of the 43rd Annual Meeting of the Orthopaedic Research Society, San Francisco, CA, February 9-13, 1997.
  83. Marras, W.S. and Granata, K.P.  “An EMG-Assisted Model and Validation of Spine Loads Occurring During Trunk Forward Bending, Lateral Bending, and Twisting,” Proceedings of the 13th Triennial Congress of the International Ergonomics Association, Tampere, Finland, June 29 – July 4, 1997.
  84. Marras, W.S., Allread, W.G., Jorgensen, M.J., and Fathallah, F.A.  “A Prospective Validation of the LMM Low Back Disorder Risk Model,” Proceedings of the 13th Triennial Congress of the International Ergonomics Association, Tampere, Finland, June 29 – July 4, 1997.
  85. Marras, W.S., Parnianpour, M., Ferguson, S.A., and Keefer-Lewis, K.  “The Objective Assessment of Low Back Disorders Using Trunk Motion Measure Models,” Proceedings of the 13th Triennial Congress of the International Ergonomics Association, Tampere, Finland, June 29 – July 4, 1997.
  86. Marras, W.S., Granata, K.P., Davis, K.G., Allread, W.G., and Jorgensen, M.J.  “The Effects of Box Features on Spine Loading in Warehouse Operations,” Proceedings of the 13th Triennial Congress of the International Ergonomics Association, Tampere, Finland, June 29 – July 4, 1997.
  87. Allread, W.G., Marras, W.S., Fathallah, F.A.  “The Relationship Between Occupational Musculoskeletal Discomfort and Workplace, Personal, and Trunk Kinematic Factors,” Proceedings of the Human Factors and Ergonomics Society 42nd Annual Meeting, Chicago, IL, October 5-9, 1998.
  88. Marras, W.S., Davis, K.G., Kirking, B.C., Bertsche, P.K.  “Low Back Disorder Risk and Spinal Loading During Patient Transfer,” Proceedings of the Human Factors and Ergonomics Society 42nd Annual Meeting, Chicago, IL, October 5-9, 1998.
  89. Davis, K.G., and Marras, W.S.  “Is Changing Box Weight an Effective Ergonomic Control?” Proceedings of the Human Factors and Ergonomics Society 42nd Annual Meeting, Chicago, IL, October 5-9, 1998.
  90. Treaster, D.E., and Marras, W.S.  “A Biomechanical Assessment of Alternative Keyboards Using Tendon Travel,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  91. Marras, W.S.  Plenary – “Occupational Low Back Disorder Causation and Control,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  92. Marras, W.S., Davis, K.G., Jorgensen, M.J.  “Assessment of Anatomical Representations of the Trunk Muscles in EMG-Assisted Spinal Load Models,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  93. Davis, K.G., Marras, W.S., Heaney, C.A., Maronitis, A.B.  “Influence of Job Stress on Muscle Activity and Spinal Loads,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  94. Fathallah, F.A., Marras, W.S., Parnianpour, M.  “Combined Spinal Motion and Loading in Occupational Low Back Disorders,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  95. Davis, K.G., Marras, W.S., Young, D.P.  “A Comparison of Males and Females during Asymmetric Lifting,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  96. Maronitis, A.B., Kovacs, K.M. Splittstoesser, R.E. Marras, W.S.  “The Effectiveness of Whole-Body and Localized Measures of Fatigue,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  97. Lee, W., Karwowski, W., Marras, W.S.  “A Neuro-Fuzzy System for Predicting the EMG of Trunk Muscles Based on Lifting Task Variables,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  98. Marras, W.S.  “Overview of Electromyography in Ergonomics,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  99. Ferguson, S.A., Marras, W.S., Heaney, C.A., Gupta, P.  “Predicting Low Back Functional Performance Recovery,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  100. Cutlip, R.G., Marras, W.S., Warren, G.L., Rempel, D.M., Stauber, W.T.  “Soft Tissue Pathomechanics and Its Application to Ergonomics [Panel],” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  101. Splittstoesser, R.E., Davis, K.G., Marras, W.S.  “Trade-Offs between Trunk Flexion, Hip Flexion, and Knee Angle in Lifting Below Waist Level,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.
  102. Marras, W.S., Allread, W.G., Burr, D.L., Fathallah, F.A.  “Validation of a Low-Back Disorder Risk Model in a Prospective Study of Ergonomic Interventions into Manual Materials Handling Jobs,” Proceedings of the IEA 2000/HFES 2000 Congress, San Diego, CA, July 29 – August 4, 2000.

Presentations (selected):   1980-1989        1990-1999        2000-present        Return to top of page

  1. "Evaluation of Controlled Static Exertions in Various Muscle Groups," NATO Symposium on Anthropometry and Biomechanics, Cambridge, England, July 5-11, 1980.
  2. "Ergonomic Evaluations of Back Trauma in Industry," Seminar presented at American Industrial Hygiene Association/Nation Safety Council Professional Development Conference, Denver, CO, March 7-11, 1983.
  3. "Measurements of Load Upon the Lumbar Spine During Isometric and Isokinetic Lifting Activities," 7th Annual Conference of the American Society of Biomechanics, Mayo Clinic, Rochester, MN, Sept. 23-30, 1983.
  4. "The Effects of Motion Loading on the Lumbar Spine," 1983, Brouha    Conference, Princeton, NJ, Nov. 9-11, 1983.
  5. "Modeling Muscle Strength," University of Michigan Ergonomics Seminar, Ann Arbor, MI, December 6, 1983.
  6. "An Overview of Human Factors in Ohio," 54th All Ohio Safety Congress, April 24-26, 1984.
  7. "Corporate Strategies for Managing Back Injuries and Backache," The Ohio Manufacturers Association, Columbus, OH, Jan. 30, 1985.
  8. "Biomechanical Modeling in Ergonomics," Seminar on Integrated Ergonomic Modeling", National Academy of Sciences, Washington, D.C., June 17-18, 1985.
  9. "Human Factors Issues in Hand Tool Use," 1985 Society of Automotive Engineers International Off Highway and Power Plant Congress and Exposition", Milwaukee, WI, September 9-12, 1985.
  10. "Occupational Low Back Disorder Research," University of Michigan Human Factors Seminar, Ann Arbor, Michigan, Feb. 13, 1987.
  11. "Industrial Low Back Research," American Society of Safety Engineers, J. Leonard Camera Center, Columbus, Ohio, Feb. 24, 1987.
  12. "The Development of a Dynamic Spine Model," Brouha Symposium, Blacksburg, VA, Sept. 8-11, 1987.
  13. "The Ergonomics of Low Back Disorders," American Academy of Industrial Hygiene Annual Conference, San Diego, CA, Sept. 14-16, 1987.
  14. "Recent Advances in Assessing Low Back Dysfunction," The Injured Back: Medical and Economic Consequences (Symposium), Savannah, GA, Sept. 25, 1987.
  15. "Ergonomics Overview of Manual Materials Handling," presented at Topics of Ergonomics II:  Ergonomics Overview for the Occupational Health and Safety Practitioner, Medical College of Ohio, Toledo, OH, July 19, 1988.
  16. "Towards an Understanding of Three Dimensional Motion Components During Materials Handling," University of Michigan Ergonomics Seminar, Ann Arbor, MI, Nov. 23, 1988.
  17. "Examination of Current Technology for Measuring Trunk Forces," Third Annual B.A.C.K.S. Symposium, Phoenix, AZ Aug. 10-12, 1989.
  18. "Wrist Motions and the Use of Retail Scanners," Brouha Symposium, Estes Park, CO, Aug. 29-Sept. 1, 1989.
  19. "Ergonomics Problems in the Rubber Industry," 11th Annual URW Joint Labor /Management Health and Safety Seminar, Daytona Beach, FL, Sept. 17-23, 1989.
  20. "Biodynamics in Ergonomics," Seminar given at NIOSH, Cincinnati, Ohio Feb. 23, 1990.
  21. "Wrist Movements and Cumulative Trauma Disorders," Occupational Disorders of the Upper Extremities, Ann Arbor, MI, March 29-30, 1990.
  22. "Lumbar Motion Monitoring in Industry," American Back Society Spring Symposium on Back Pain, Chicago, IL, May 3-6, 1990.
  23. "Testing for Deficits in Functional Performance, "American Back Society Spring Symposium on Back Pain, Chicago, IL, May 3-6, 1990.
  24. "Development and Implementation of Ergonomics Programs in Industry," (Roundtable) American Industrial Hygiene Conference, Orlando, FL, May 13-18, 1990.
  25. "Biodynamics and Ergonomics," Forty-fifth Annual Federal Safety and Health Conference (National Safety Council Congress and Exposition), Las Vegas, NV, October 29-31, 1990.
  26. "Cumulative Trauma Disorders and Scanning," Sunoco Ergonomics and Front End Productivity Seminar, Chicago IL, November 5-7, 1990.
  27. "Ergonomics and Biodynamics," Food Marketing Institute Risk Managers Conference, Phoenix, AZ, February 7, 1991.
  28. "Industrial Medicine: The Challenge of the 1990's,” Chattecx Corporation, Baltimore, MD, March 15, 1991.
  29. "Biodynamic Research and Industry," NCR Corporation Technical Conference, Atlanta GA, April 18, 1991.
  30. "Towards an Understanding of Spine Loading During Occupationally related Dynamic Trunk Activity," International Ergonomics Association, 11th Congress, Paris, France, July 15-20, 1991.
  31. "Wrist Motions and CTD Risk in Industrial and Service Environments," International Ergonomics Association, 11th Congress, Paris, France, July 15-20, 1991.
  32. "Scanning and Upper Extremity Cumulative Trauma Disorders," Food Marketing Institute Ergonomics Conference, Dayton, Ohio, September 9-11, 1991.
  33. "New Research Findings in Occupational Low Back Disorders," Food Marketing Institute Ergonomics Conference, Dayton, Ohio, September 9-11, 1991.
  34. "Work Place Analysis," Occupational Spinal Disorders: Prevention, Diagnosis & Treatment, Chicago, IL, September 22-24, 1991.
  35. "Pre-Employment Screening, Is It Worthwhile? (Con Position)," Occupational Spinal Disorders: Prevention, Diagnosis & Treatment, Chicago, IL, September 22-24, 1991.
  36. "Trunk Muscle Activity and Intra-Abdominal Activity During Changes in Trunk Position, Velocity and Acceleration," XIIIth International Congress on Biomechanics, The University of Western Australia, Perth, Australia, December 9-13, 1991.
  37. "The Role of Trunk Motion in Occupationally-Related Low Back Disorder," International Society for the Study of the Lumbar Spine, 19th Annual Meeting, Chicago, IL, May 20-24, 1992.
  38. "The Biodynamics of Occupationally-Related Low Back Disorders," The Cleveland Clinic, Cleveland, OH, June 24, 1992.
  39. "Towards an Understanding of Spine loading During Occupationally Related Dynamic Trunk Activities," (Plenary Address) International Ergonomics Association World Conference on Ergonomics Of Materials Handling and Information Processing at Work, Warsaw, Poland, June, 14, 1993
  40. "A Stochastic Model of Trunk Muscle Coactivation During Trunk Banding Motions," International Society for the Study of the Lumbar Spine Annual Meeting, Marseilles, France, June 18, 1993.
  41. "Three-Dimensional Dynamic Trunk Motions and the Risk of Occupationally-Related Low Back Disorder," International Society of Biomechanics XIVth Congress, Paris, France July 4, 1993.
  42. “Dynamic Factors of Occupationally-Related Upper Limb Disorders,” International Conference on Occupational Disorders of the Upper Extremities, San Francisco, CA, December 1-2, 1994.
  43. Keynote Address “The Effects of Dynamic Trunk Motion on the Risk of Low Back Disorders During Lifting,” Ergonomics Society of Australia Annual Meeting, Sydney, Australia, December 5-8, 1994.
  44. “Biomechanical Exposure Measurements and their relation to occupational musculoskeletal disorders,” Third seminar on Current Trends in Research on Work-Related Musculoskeletal Disorders, Copenhagen, Denmark, April 24-28, 1995.
  45. “Changes in Spine Loading During Repetitive Exertions,” International Society for the Study of the Lumbar Spine Annual Meeting, Burlington, Vermont, June 25 - 29, 1996.  
  46. “The Effects of Box Weight, Size, and Handle Coupling on Spine Loading During Depalletizing Operations,” Human Factors and Ergonomics Society, 40th Annual Meeting, Philadelphia, PA, September 2 - 6, 1996.
  47. “Spine Loading During Whole-Body Free-Dynamic Lifting,” (Keynote Lecture) 11th Congress of the International Society of Electrophysiology and Kinesiology, Enschede, The Netherlands, October 27-30, 1996
  48. “The Quantification of Low Back Disorders,” (Annual Low Back Disorder Lecture) University of Vermont, Low Back Rehabilitation Engineering Center, Burlington, Vermont, February 17, 1998.
  49. “The Prevention of Occupationally-Related of Low Back Disorders and the Clinical Assessment of those Disorders that Do Occur,” The University of Iowa Caterpillar Lecture, Iowa City, Iowa, April 22, 1999.
  50. “Back Research Studies”, Ohio Safety Congress & Expo., Columbus, Ohio, April, 3, 2000.
  51. “Potential Biomechanical Mechanisms for Psychosocial Stress,” Best Paper Award, International Society for the Study of Lumbar Spine Annual Meeting, Adelaide, Australia, April 10-13, 2000.
  52. “Occupational Low Back Disorder Causation and Control, Plenary Session, IEA/HFES 2000 Conference, San Diego, CA, July 29 – August 4, 2000.
  53. “Low Back Disorder Biomechanics and the Workplace”, University of Illinois, Champaign, IL, October 10, 2000.
  54. “The Relationship Between Psychosocial Stress and Low Back Spine Forces”, Invited address, International Conference on Applications of Human Performance in Health and Disability, March 26-29, 2001.
  55. “The Evidence for Causality and Low Back Pain”, The University of Alberta, Alberta, Canada, April 18, 2001.
  56. “Clinical Assessment of Low Back Disorders using Biomechanics” Louisiana State University, School of Medicine, Visiting Professor Lecture, February 22, 2001.
  57. “Job Analyses via Goniometric Based Instrumentation Methods”, American Industrial Hygiene Association Annual Conference, Invited Presentation, New Orleans, LA, June 4, 2001.
  58. “Full Case Ergonomic Issues in Distribution Centers”, American Industrial Hygiene Association, Annual Conference, Invited Presentation, New Orleans, LA, June 6, 2001.
  59. “Research in Academic Environments”, NASS Research Workshop. North American Spine Society Annual Meeting, Seattle WA, November 3, 2001.
  60. “Towards the Development of a Cumulative Trauma Metric for Occupationally-Related Musculoskeletal Disorders”, Invited Presentation, World Congress on Biomechanics, Calgary, Canada, August 5-9, 2002.
  61. “Work-Related Low Back Disorder Causation and Control”, Keynote Address, ABERGO 2002 - the VII Latin-American Congress of Ergonomics, XII, Brazilian Ergonomics Congress and I Brazilian Seminar on Accessibility. Recife, Brazil September 1 to 5, 2002.
  62. “The Future of Research in Understanding and Controlling Work-Related Low Back Disorders”, Plenary Address, XVth Triennial Congress of the International Ergonomics Association, Seoul, South Korea, August 24-29, 2003.
  63. “The Elements of Success” Convocation address at the University of Waterloo, Waterloo, Ontario, Canada, October 234, 2004.
  64. “Biomechanics of Low Back Disorders,” Graduate Advanced Ergonomics Course for the State of California, San Diego, California, March 16, 2005.
  65. “The Evaluation and Control of Occupationally Related Musculoskeletal Disorders,” Ergonomics Society of South Africa Workshop, Pretoria, South Africa, September 13, 2005.
  66. “The Evaluation and Control of Occupationally Related Musculoskeletal Disorders,” Ergonomics Society of South Africa Workshop, Pietermaritzburg, South Africa, September 15, 2005.
  67. “The Control of Work Related Low Back Disorders,” University of South Africa, Grahmstown, South Africa, September 20, 2005.
  68. “Low Back Disorders During Patient Handling,” Minnesota Nurses Association 50th Annual Meeting. St. Paul, Minnesota, October 21, 2005.
  69. “Understanding and Controlling Low Back Disorder Risk,” National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, January 18, 2006.
  70. “Working Hurt: The Downward Spiral of Low Back Pain” 6th Annual Safe Patient Handling and Movement Conference, Keynote Address, Clearwater Beach, Florida, February 28, 2006.
  71. "Low Back Disorder Risk During Patient Handling" Alaska State Nurses Conferences - Keynote address, March 31, 2006, Anchorage, Alaska.
  72. “Lumbar spinal biomechanics in industrial setting - ramifications for discogenic injury” and “Functional assessment of the patient suffering from lumbar axial pain” First Annual Central Virginia Spine Symposium, Richmond VA - April 28, 2006.
  73. "Biomechanics of Low Back Disorders" University of Chicago Surgery Grand Rounds, Chicago IL,  May 10, 2006
  74. "Low Back Pain and Patient Handling" Health Care Ergonomics Conference - Keynote Address, Portland OR, June 28, 2006
  75. “Biomechanical Models and Back Pain,” Occupational Biomechanics Symposium: Celebrating 35 years of Progress and Looking Toward the Future, University of Michigan, Ann Arbor, MI, November 16-17, 2006.
  76. “Working Hurt: The Downward Spiral of Low Back Pain” New England Safe Patient Handling conference Keynote Address (Mass. Nurses Association)- Keynote Address,  January 12,  2007.
  77. “Biomechanical Evidence that Manual Lifting is Not Safe,” 7th Annual Safe Patient Handling & Movement Conference, Lake Buena Vista, FL, March 12-16, 2007.
  78. “The Working Back,” Ohio Safety Congress and Expo, Cleveland, OH, March 20-22, 2007.
  79. “The Biomechanics of Low Back Pain,” (Grand Rounds). Beaumont Hospital, Detroit, Michigan, September 17, 2007.
  80. “The Working Back,” (Invited Plenary Lecture), Industrial Ergonomics Technical Group, Human Factors and Ergonomics Society, Baltimore MD., October 3, 2007.
  81. “Low Back Disorders in Distribution Centers,” Plenary Address, FMI Risk Management Conference, Dallas TX, October 15, 2007
  82. “The Working Back” (Keynote Address), Conference on Industrial Risk Engineering, Montreal, Canada, December 17, 2007.
  83. “The Trade-off in Spine Loads during Patient Pushing and Pulling,” Geoff Kelafant Lecture (plenary address), 8th Annual Patient Handling and Movement Conference, Orlando FL, March 12, 2008.

Contact information:

The Ohio State University
Deptartment of Industrial, Welding & Systems Engineering
1971 Neil Ave.
Columbus, OH  43210
ph: 614.292.6670

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