Surveillance
Laboratory Investigations
Biomechanical Modeling
Clinical Studies
Ferguson SA, Marras WS, Allread GW, Knapik GG and Splittstoesser, RE (2011) " Musculoskeletal Disorder Risk during Auto Assembly using Cantilever Chair " Applied Ergonomics (Submitted).
Ferguson SA, Marras WS, Allread GW, Knapik GG, Vandlen KA, Splittstoesser, RE and Yang G. (2011) " Musculoskeletal disorder risk as a function of vehicle rotation angle during assembly tasks. " Applied Ergonomics, 42, 699-710.
Hoyle JA, Marras WS, Sheedy JE and Hart DE. (2011) " Effects of postural and visual stressors on myofascial trigger point development and motor unit rotation during computer work. " Journal of Electromyography and Kinesiology, 21, 41-48.
Davis, K.G., Kotowski, S.E., Albers, J, and Marras, W.S. (2010) " Investigating Reduced Bag Weight as an Effective Risk Mediator for Mason Tenders. " Applied Ergonomics 41(6) 822-831.
Marras, W.S., Knapik, G.G. and S. Ferguson (2009) " Lumbar Spine Forces during Manoeuvring of Ceiling-based and Floor-based Patient Transfer Devices. " Ergonomics, 52(3) 384-397.
Marras, W.S., Knapik, G.G., and S.A Ferguson (2009) " Loading along the Lumbar Spine as Influenced by Speed, Control, Load Magnitude, and Handle Height during Pushing. " Clinical Biomechanics, 24 (2), 155-163.
Marras, W.S. (2009) " Point of View. " Spine, 34(4), 322.
Davis, K.G., Kotowski, S.E., Albers, J, and Marras, W.S. (2009) " Investigating Reduced Bag Weight as an Effective Risk Mediator for Mason Tenders. " Applied Ergonomics (in press).
Knapik, G.G. and W,S. Marras (2008) " Spine Loading at Different Lumbar Levels During Pushing and Pulling, " Ergonomics, 52(1) 60-70.
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.
Chany, A.M.L., Marras, W.S., Burr, D.L. (2007) “The Effect of Phone Design on Upper Extremity Discomfort and Muscle Fatigue.” Human Factors , 49(4), 602-618.
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.
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.
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.
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.
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.
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.
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, 296-305.
Parakkat, J., Chany, Am.M., Yang, G., Burr D., 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.
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.
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.
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.
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.
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.
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.
Marras, W.S., Davis, K.G., and Jorgensen, M. (2002) “Spine Loading and Gender”, Spine, 27(22), 2514-2520.
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.
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. Volvo Award for Low Back Pain Research.
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.
Davis, K.G., Splittstoesser, R.E., and Marras, W.S. (2002) "Kinematic Contribution and Synchronization of the Trunk, Hip, and Knee during Lifting Below Waist Level," Occupational Ergonomics, 3(2), 99-103 .
Marras, W.S., Davis, K.G., and Jorgensen, M. (2002) “Spine Loading as a Function of Gender”, Spine, 27(22), 2514-2520.
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.
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.
Treaster, D.E., and Marras, W.S. (2000) "An Assessment of Alternate Keyboards Using Finger Motion, Wrist Motion,
and Tendon Travel," Clinical Biomechanics, 15(7), 499-503.
Granata, K.P. and Marras, W.S. (2000) "Cost-Benefit of Muscle Cocontraction in Protecting Against Spinal
Instability," Spine, 25(11), 1398-1404.
Davis, K.G. and Marras, W.S. (2000) "The Effects of Motion on Trunk
Biomechanics," Clinical Biomechanics, 15(10), 703-717.
Davis, K.G. and Marras (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.
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.
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.
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.
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.
Marras, W.S., Davis, K.G., Kirking, B.C. and Granata, K.P. (1999) "Biomechanical Assessment of Lifting Dynamics, Muscle Activity and Spinal Loads While Using Three Different Styles of Lifting Belt," Clinical Biomechanics, 12(2), 107-115.
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.
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(6), 367-375.
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.
Bridger, R.S., Sparto, P., and Marras, W.S. (1998) "Spade
Design, Lumbar Motion Risk of Low-Back Injury And Digging Posture," Occupational
Ergonomics, 1(3),157-172.
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.
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.
Marras, W.S., and Davis, K.G. (1998) "Spine Loading During Asymmetric Lifting Using One vs. Two Hands," Ergonomics, 41(6), 817-834.
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.
Davis, K., Kirking, B., Gaudes, L., Jany, 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.
Marras, W. S. Granata, K. P. (1997) "Spine loading during trunk lateral bending motions" Journal of Biomechanics, 30(7), 697-703.
Marras, W.S. and Granata, K.P. (1997) "Loads On The Lumbar Spine During Repetitive Lifting," Spine, 22(21), 2564-2570.
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.
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.
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.
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.
Granata, K.P., Marras, W.S., and Fathallah, F.A. (1996) "A Method
For Measuring External Loads During Dynamic Lifting Extensions,"
Journal of Biomechanics, 29(9), 1219-1222.
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.
Sommerich, C.M., Marras, W.S., and Parnianpour, M. (1996) "A Quantitative Description of Typing Biomechanics," Journal of Occupational Rehabilitation, 6(1), 33-55.
Marras, W.S., Schoenmarklin, R.W., Greenspan,
G.J., and K.R. Lehman (1995), "Quantification of Wrist Motions During
Scanning," Human Factor, 37(2), 412-423.
Granata, K.P., and Marras, W.S. (1995) "The Influence of Trunk Muscle
Coactivity Upon Dynamic Spinal Loads," Spine, 20(8), 913-919.
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.
Marras, W. S., McGlothlin, J. D., McIntyre, D. R., Nordin, M., and Kroemer, K.H.E. (1993) "Measures of Low Back Performance," American Industrial Hygiene Association Ergonomics Guide, ISBN 0-932627-52-8, Stock No. 174-ER-93.
Marras, W.S., Fathallah, F., Miller, R.J., Davis, S.W.,
and Mirka, G.A. (1992) "Accuracy of a Three Dimensional Lumbar Motion
Monitor for Recording Dynamic Trunk Motion Characteristic," International
Journal of Industrial Ergonomics, 9(1), 75-87.
Sommerich, C.M., and Marras, W.S. (1992) "Temporal Patterns of Trunk
Muscle Activity Throughout a Dynamic, Asymmetric Lifting Motion," Human Factors, 34(2), 215-230.
Marras, W.S., and Lavender, S.A. (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.
Marras, W.S., 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.
Lavender, S. A., and Marras, W.S. (1990) "An Electromyographic Analysis of an Ergonomic Intervention with the Jack Leg Drill," Applied Ergonomics, 21(2), 90-100.
Lavender, S.A., Mirka, G.A., Schoenmarklin, R.W., Sommerich, C.M., Sudhaker,
L.R., and Marras, W.S. (1989) "An Investigation into the Effects
of Preview and Symmetry on Trunk Loading," Human Factors, 31(1) 101-115.
Marras, W.S., and Mirka, G.A. (1989) "Trunk Strength During Asymmetric
Trunk Motion," Human Factors, 31(6), 667-677.
Gray,B.A., and Marras, W.S. (1989) "An Experimental Analysis of Railroad Spike Maul Methods," Human Factors, 31(3), 335-344.
Schoenmarklin, R.W., and Marras, W.S. (1989) "Effects of Angle and Work Orientation on Hammering: I. Wrist Motion and Hammering Performance," Human Factors, 31(4), 397-411.
Schoenmarklin, R.W., and Marras, W.S. (1989) "Effects of Angle and Work Orientation on Hammering: II. Muscle Fatigue and Subjective Ratings of bcopy Discomfort," Human Factors, 31(4), 413-420.
Gallagher, S., Marras, W.S., and Bobick, T.G. (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.
Marras, W.S., Rangarajulu, S.L., and Wongsam, P.E. (1987) "Trunk Force Development During Static and Dynamic Lifts," Human Factors, 29(1), 19-29.
Treaster, D., and W.S. Marras (1987) "Measurement of Seat
and Back Pressure Distributions," Human Factors, 29(5), 563-575.
Marras, W.S. (1987) "Trunk Motion During Lifting: Temporal Relations
Among Loading Factors," International Journal of Industrial Ergonomics,
1(3), 159-167.
Marras, W.S., Rangarajulu, S.L., and Lavender, S.A. (1987) "Trunk
Loading and Expectation," Ergonomics, 30(3), 551-562.
Kim, J.Y., and Marras, W.S. (1987) "Quantitative Trunk Muscle Electromyography
During Lifting at Different Speeds," International Journal of Industrial
Ergonomics, 1(3), 219-229.
Marras, W.S., Wongsam, P.E., and Rangarajulu, S.L. (1986) "Trunk Motion During Lifting: The Relative Cost," International Journal of Industrial Ergonomics, 1(2), 103-113.
Marras, W.S., and Rockwell, T.H. (1986) "An Experimental Evaluation of Method and Tool Effects in Spike Maul Use," Human Factors, 28(3), 267-281.
Rockwell, T.H., and Marras, W.S. (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.
Marras, W.S., King, A.I., and Joynt, R.L. (1984) "Measurements of Loads on the Lumbar Spine Under Isometric and Isokinetic Conditions," Spine, 9(2), 176-188
Kroemer, K.H.E., and W.S. Marras (1981) "Evaluation of Maximal and Sub-Maximal Static Muscle Exertions," Human Factors, 23(6), 643-654.
