W S Marras

Summary

Affiliation: The Ohio State University
Country: USA

Publications

  1. ncbi request reprint Spinal loading during manual materials handling in a kneeling posture
    Riley E Splittstoesser
    The Ohio State University, Department of Industrial, Welding, and Systems Engineering, 1971 Neil Avenue, Room 210, Columbus, OH 43210, United States
    J Electromyogr Kinesiol 17:25-34. 2007
  2. ncbi request reprint Putting mind and body back together: a human-systems approach to the integration of the physical and cognitive dimensions of task design and operations
    W S Marras
    Biodynamics Laboratory, Department of Integrated Systems Engineering, The Ohio State University, 1971 Neil Ave, Columbus, Ohio 43210, USA Electronic address
    Appl Ergon 45:55-60. 2014
  3. ncbi request reprint The complex spine: the multidimensional system of causal pathways for low-back disorders
    William S Marras
    The Ohio State University, Biodynamics Lab, 210 Baker Systems, 1971 Neil Ave, Columbus, OH 43210, USA
    Hum Factors 54:881-9. 2012
  4. ncbi request reprint Female and male trunk geometry: size and prediction of the spine loading trunk muscles derived from MRI
    W S Marras
    Biodynamics Laboratory, IWSE Department, The Ohio State University, Rm 210, 1971 Neil Avenue, Columbus, OH 43210, USA
    Clin Biomech (Bristol, Avon) 16:38-46. 2001
  5. doi request reprint Quantitative dynamic measures of physical exposure predict low back functional impairment
    William S Marras
    Biodynamics Laboratory, The Ohio State University, 1971 Neil Avenue, Columbus, OH 43210, USA
    Spine (Phila Pa 1976) 35:914-23. 2010
  6. ncbi request reprint Spine loading as a function of gender
    William S Marras
    Biodynamics Laboratory, Institute for Ergonomics, Ohio State University, Columbus, Ohio 43210, USA
    Spine (Phila Pa 1976) 27:2514-20. 2002
  7. ncbi request reprint A non-MVC EMG normalization technique for the trunk musculature: Part 2. Validation and use to predict spinal loads
    W S Marras
    The Biodynamics Laboratory, The Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus OH 43210, USA
    J Electromyogr Kinesiol 11:11-8. 2001
  8. ncbi request reprint Prospective validation of a low-back disorder risk model and assessment of ergonomic interventions associated with manual materials handling tasks
    W S Marras
    Institute for Ergonomics, The Ohio State University, Columbus 43210, USA
    Ergonomics 43:1866-86. 2000
  9. ncbi request reprint Gender influences on spine loads during complex lifting
    William S Marras
    Biodynamics Laboratory, Institute for Ergonomics, 1971 Neil Avenue, The Ohio State University, Columbus, OH 43210, USA
    Spine J 3:93-9. 2003
  10. ncbi request reprint The influence of psychosocial stress, gender, and personality on mechanical loading of the lumbar spine
    W S Marras
    Biodynamics Laboratory and the School of Public Health, The Ohio State University, Columbus, Ohio 43210, USA
    Spine (Phila Pa 1976) 25:3045-54. 2000

Collaborators

Detail Information

Publications73

  1. ncbi request reprint Spinal loading during manual materials handling in a kneeling posture
    Riley E Splittstoesser
    The Ohio State University, Department of Industrial, Welding, and Systems Engineering, 1971 Neil Avenue, Room 210, Columbus, OH 43210, United States
    J Electromyogr Kinesiol 17:25-34. 2007
    ..Regression equations were developed to predict peak spine loading using subject height, load weight and destination height with R(2) values of 0.62, 0.51 and 0.57 for compression, AP and lateral shear respectively...
  2. ncbi request reprint Putting mind and body back together: a human-systems approach to the integration of the physical and cognitive dimensions of task design and operations
    W S Marras
    Biodynamics Laboratory, Department of Integrated Systems Engineering, The Ohio State University, 1971 Neil Ave, Columbus, Ohio 43210, USA Electronic address
    Appl Ergon 45:55-60. 2014
    ..Only then will we be able to truly optimize systems for human use. ..
  3. ncbi request reprint The complex spine: the multidimensional system of causal pathways for low-back disorders
    William S Marras
    The Ohio State University, Biodynamics Lab, 210 Baker Systems, 1971 Neil Ave, Columbus, OH 43210, USA
    Hum Factors 54:881-9. 2012
    ..The aim of this study was to examine the logic behind the knowledge of low-back problem causal pathways...
  4. ncbi request reprint Female and male trunk geometry: size and prediction of the spine loading trunk muscles derived from MRI
    W S Marras
    Biodynamics Laboratory, IWSE Department, The Ohio State University, Rm 210, 1971 Neil Avenue, Columbus, OH 43210, USA
    Clin Biomech (Bristol, Avon) 16:38-46. 2001
    ....
  5. doi request reprint Quantitative dynamic measures of physical exposure predict low back functional impairment
    William S Marras
    Biodynamics Laboratory, The Ohio State University, 1971 Neil Avenue, Columbus, OH 43210, USA
    Spine (Phila Pa 1976) 35:914-23. 2010
    ..Prospective field study of work exposure and changes in back function...
  6. ncbi request reprint Spine loading as a function of gender
    William S Marras
    Biodynamics Laboratory, Institute for Ergonomics, Ohio State University, Columbus, Ohio 43210, USA
    Spine (Phila Pa 1976) 27:2514-20. 2002
    ..In vivo laboratory studies were conducted to investigate the spine loads imposed on men and women during a series of lifting tasks that varied in the degree of lifting control required by the subject...
  7. ncbi request reprint A non-MVC EMG normalization technique for the trunk musculature: Part 2. Validation and use to predict spinal loads
    W S Marras
    The Biodynamics Laboratory, The Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus OH 43210, USA
    J Electromyogr Kinesiol 11:11-8. 2001
    ..This technique should permit the quantitative evaluation of muscle activity for subjects unable to produce maximum exertions...
  8. ncbi request reprint Prospective validation of a low-back disorder risk model and assessment of ergonomic interventions associated with manual materials handling tasks
    W S Marras
    Institute for Ergonomics, The Ohio State University, Columbus 43210, USA
    Ergonomics 43:1866-86. 2000
    ..These results support use of the LBD risk model to assess accurately a job's potential to lead to low-back injuries among its employees...
  9. ncbi request reprint Gender influences on spine loads during complex lifting
    William S Marras
    Biodynamics Laboratory, Institute for Ergonomics, 1971 Neil Avenue, The Ohio State University, Columbus, OH 43210, USA
    Spine J 3:93-9. 2003
    ..Thus, there is a void in our knowledge in that we do not understand how material handling influences spine loading and potential risk of injury as a function of gender under realistic lifting situations...
  10. ncbi request reprint The influence of psychosocial stress, gender, and personality on mechanical loading of the lumbar spine
    W S Marras
    Biodynamics Laboratory and the School of Public Health, The Ohio State University, Columbus, Ohio 43210, USA
    Spine (Phila Pa 1976) 25:3045-54. 2000
    ..The effects of psychosocial stress on muscle activity and spinal loading were evaluated in a laboratory setting...
  11. ncbi request reprint A non-MVC EMG normalization technique for the trunk musculature: Part 1. Method development
    W S Marras
    The Biodynamics Laboratory, The Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus, OH 43210, USA
    J Electromyogr Kinesiol 11:1-9. 2001
    ....
  12. doi request reprint Quantitative biomechanical workplace exposure measures: distribution centers
    William S Marras
    Biodynamics Laboratory, The Ohio State University, 1971 Neil Avenue, Columbus, OH 43210, United States
    J Electromyogr Kinesiol 20:813-22. 2010
    ..This study indicates that distribution workers are commonly exposed to greater extreme loads and move much more rapidly than manufacturing employees. The information provided here can serve as a basis for low back pain risk assessments...
  13. doi request reprint Lumbar spine forces during manoeuvring of ceiling-based and floor-based patient transfer devices
    W S Marras
    Biodynamics Laboratory, The Ohio State University, Columbus, Ohio 43210, USA
    Ergonomics 52:384-97. 2009
    ..Given these findings, ceiling-based lifts are preferable to floor-based patient transfer systems...
  14. ncbi request reprint Spine loading characteristics of patients with low back pain compared with asymptomatic individuals
    W S Marras
    Biodynamics Laboratory, Ohio State University, 1971 Neil Avenue, Columbus, OH 43210, USA
    Spine (Phila Pa 1976) 26:2566-74. 2001
    ..Patients with low back pain and asymptomatic individuals were evaluated while performing controlled and free-dynamic lifting tasks in a laboratory setting...
  15. doi request reprint Instrumentation for measuring dynamic spinal load moment exposures in the workplace
    William S Marras
    Institute for Ergonomics, Biodynamics Laboratory, The Ohio State University, Columbus, OH 43210, USA
    J Electromyogr Kinesiol 20:1-9. 2010
    ..With the item mass estimates being within half a kilogram, the instrumentation provides a reliable and valid means for assessing dynamic load moment exposures in dynamic distribution center lifting tasks...
  16. ncbi request reprint A critical review of a pivotal scientific contribution: Liles and associates 24 years later
    William S Marras
    Ohio State University, The Biodynamics Laboratory, Columbus, OH 43210, USA
    Hum Factors 50:393-6. 2008
    ..This review evaluates (in retrospect) the contribution of Liles and associates (1984) to the causality debate of the work relatedness of low back pain...
  17. ncbi request reprint Low back pain recurrence in occupational environments
    William S Marras
    Biodynamics Laboratory, Ohio State University, Columbus, OH 43210, USA
    Spine (Phila Pa 1976) 32:2387-97. 2007
    ..Prospective assessment of return to work after low back pain...
  18. ncbi request reprint Spine loading as a function of lift frequency, exposure duration, and work experience
    W S Marras
    Biodynamics Laboratory, The Ohio State University, Columbus, 43210, USA
    Clin Biomech (Bristol, Avon) 21:345-52. 2006
    ..The objective of this project was to document how spine loading changes as a function of experience, lift frequency, and lift duration while repetitively lifting over the course of an 8-h workday...
  19. doi request reprint Loading along the lumbar spine as influence by speed, control, load magnitude, and handle height during pushing
    William S Marras
    Biodynamics Laboratory, The Ohio State University, Columbus, OH 43210, USA
    Clin Biomech (Bristol, Avon) 24:155-63. 2009
    ..Yet, few studies have considered the range of activities that might contribute to the antagonistic coactivation and subsequent spine loading...
  20. ncbi request reprint Functional impairment as a predictor of spine loading
    William S Marras
    Biodynamics Laboratory, Ohio State University, Columbus, OH 43210, USA
    Spine (Phila Pa 1976) 30:729-37. 2005
    ..Spine loadings during a variety of lifting exertions were compared with individual torso kinematic abilities. Relationships were evaluated between these measures...
  21. ncbi request reprint Spine loading in patients with low back pain during asymmetric lifting exertions
    William S Marras
    Biodynamics Laboratory, The Ohio State University, 210 Baker Systems Engineering, 1971 Neil Avenue, Columbus, OH 43210, USA
    Spine J 4:64-75. 2004
    ..Recurrent low back pain (LBP) is a common and costly problem that might be related to increased spine loads in those with LBP. However, we know little about how the spine is loaded when those with LBP perform lifting exertions...
  22. ncbi request reprint The classification of anatomic- and symptom-based low back disorders using motion measure models
    W S Marras
    Department of Industrial and Systems Engineering, Ohio State University, Columbus, USA
    Spine (Phila Pa 1976) 20:2531-46. 1995
    ..Furthermore, once the interactive nature of these trunk motion characteristics is considered, the model could help diagnose low back disorders. However, independent data sets are needed to validate these findings...
  23. ncbi request reprint 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 risk of injury
    W S Marras
    Department of Industrial and Systems Engineering, Ohio State University, Columbus
    Spine (Phila Pa 1976) 18:617-28. 1993
    ..This model could be used as a quantitative, objective measure to design the workplace so that the risk of occupationally-related low back disorder is minimized...
  24. ncbi request reprint Predicting recovery using continuous low back pain outcome measures
    S A Ferguson
    Biodynamics Laboratory, The Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus, OH 43210, USA
    Spine J 1:57-65. 2001
    ..There is a lack of research evaluating multiple follow-up visits, specifically when using continuous outcome measures. Continuous outcome measures with several follow-up assessments would allow us to evaluate rate of recovery...
  25. ncbi request reprint Longitudinal quantitative measures of the natural course of low back pain recovery
    S A Ferguson
    Biodynamics Laboratory, Ohio State University, Columbus, Ohio 43210, USA
    Spine (Phila Pa 1976) 25:1950-6. 2000
    ..A prospective study was developed to quantify acute low back pain recovery...
  26. ncbi request reprint MRI-derived moment-arms of the female and male spine loading muscles
    M J Jorgensen
    Biodynamics Laboratory, The Ohio State University, 1971 Neil Avenue, 210 Baker Systems, Columbus, OH 43210, USA
    Clin Biomech (Bristol, Avon) 16:182-93. 2001
    ..Similar to other studies, external anthropometric measures were better predictors of coronal plane moment-arms than sagittal plane moment-arms...
  27. ncbi request reprint A comprehensive evaluation of trunk response to asymmetric trunk motion
    W S Marras
    Department of Industrial and Systems Engineering, Ohio State University, Columbus
    Spine (Phila Pa 1976) 17:318-26. 1992
    ..The biomechanical implications of these findings are discussed. The reactions of the muscles to the various workplace components also were described quantitatively through equations that predict muscle activity levels...
  28. ncbi request reprint A stochastic model of trunk muscle coactivation during trunk bending
    G A Mirka
    Department of Industrial and Systems Engineering, Ohio State University, Columbus
    Spine (Phila Pa 1976) 18:1396-409. 1993
    ....
  29. ncbi request reprint Effect of electromyogram-force relationships and method of gain estimation on the predictions of an electromyogram-driven model of spinal loading
    P J Sparto
    Biomedical Engineering Center, Ohio State University, Columbus, USA
    Spine (Phila Pa 1976) 23:423-9. 1998
    ..CONCLUSION: The nature of the electromyogram-force relationship and of the method for estimating the gain significantly affect the outcomes of an electromyogram-assisted model of spinal loading...
  30. ncbi request reprint The role of complex, simultaneous trunk motions in the risk of occupation-related low back disorders
    F A Fathallah
    Biodynamics Laboratory, Ohio State University, Columbus, USA
    Spine (Phila Pa 1976) 23:1035-42. 1998
    ..Knowledge of these complex trunk velocity patterns in combination with key workplace factors provides a more sensitive means for identifying low back disorder occupational risk factors than does mere postural information...
  31. ncbi request reprint An assessment of complex spinal loads during dynamic lifting tasks
    F A Fathallah
    Biodynamics Laboratory, Ohio State University, Columbus, USA
    Spine (Phila Pa 1976) 23:706-16. 1998
    ..The higher predicted loading and loading rate during asymmetric lifting conditions can be avoided by appropriate ergonomic workplace modifications...
  32. ncbi request reprint Simulift: a simulation model of human trunk motion
    C H Reilly
    Department of Industrial and Systems Engineering, Ohio State University, Columbus
    Spine (Phila Pa 1976) 14:5-11. 1989
    ..Computer results for the simulation model are presented...
  33. ncbi request reprint Changes in trunk dynamics and spine loading during repeated trunk exertions
    W S Marras
    Biodynamics Laboratory, Ohio State University, Columbus, USA
    Spine (Phila Pa 1976) 22:2564-70. 1997
    ..CONCLUSIONS: This study has shown that spine loading patterns do indeed change with repetition, suggesting that one needs to monitor these changes throughout repetitive lifting tasks if low back disorder risk is to be minimized...
  34. ncbi request reprint Localized oxygen use of healthy and low back pain individuals during controlled trunk movements
    K M Kovacs
    Biodynamics Laboratory, The Ohio State University, Columbus, Ohio 43210, USA
    J Spinal Disord 14:150-8. 2001
    ....
  35. ncbi request reprint Variability in spine loading model performance
    W S Marras
    Biodynamics Laboratory, The Ohio State University, 1971 Neil Ave, Columbus 43210, USA
    Clin Biomech (Bristol, Avon) 14:505-14. 1999
    ..To assess the sources of variability associated with an EMG-assisted model of spine loading...
  36. ncbi request reprint Spinal loading when lifting from industrial storage bins
    S A Ferguson
    Biodynamics Laboratory, Institute for Ergonomics, Ohio State University, 1971 Neil Avenue, 210 Baker Systems, Columbus, OH 43210, USA
    Ergonomics 45:399-414. 2002
    ..Furthermore, a bin design with a hand hold may facilitate workers using a supported lifting style that reduces spinal loading...
  37. ncbi request reprint Measuring trunk motions in industry: variability due to task factors, individual differences, and the amount of data collected
    W G Allread
    Institute for Ergonomics, Biodynamics Laboratory, The Ohio State University, Columbus 43210, USA
    Ergonomics 43:691-701. 2000
    ..It is also important as a basis for future work on modelling low-back disorder risk based on a job's trunk kinematic measures...
  38. ncbi request reprint Impairment magnification during dynamic trunk motions
    W S Marras
    Biodynamics Laboratory, Ohio State University, Columbus, Ohio 43210, USA
    Spine (Phila Pa 1976) 25:587-95. 2000
    ..These objective motion measures also can be used to complement other subjective observational methods for the assessment of impairment...
  39. ncbi request reprint A biomechanical assessment and model of axial twisting in the thoracolumbar spine
    W S Marras
    Biodynamics Laboratory, Ohio State University, Columbus, USA
    Spine (Phila Pa 1976) 20:1440-51. 1995
    ..e., clockwise or counterclockwise. The results may help explain, biomechanically, why epidemiologic findings have repeatedly identified twisting as a risk factor for low back disorder...
  40. ncbi request reprint The influence of trunk muscle coactivity on dynamic spinal loads
    K P Granata
    Biodynamics Laboratory, Ohio State University, Columbus, USA
    Spine (Phila Pa 1976) 20:913-9. 1995
    ..Muscle coactivity significantly influences the modeled load in the lumbar spine during lifting exertions and should be considered if an accurate measure of spinal loading of desired...
  41. doi request reprint Spine loading at different lumbar levels during pushing and pulling
    Gregory G Knapik
    Biodynamics Laboratory, The Ohio State University, Columbus, Ohio, USA
    Ergonomics 52:60-70. 2009
    ..These findings provide insight to the nature of spine loads and their potential risk to the low back during modern exertions...
  42. ncbi request reprint Changes in spine loading patterns throughout the workday as a function of experience, lift frequency, and personality
    Anne Marie Chany
    Biodynamics Laboratory, The Ohio State University, 1971 Neil Avenue, 210 Baker Systems, Columbus, OH 43210 1271, USA
    Spine J 6:296-305. 2006
    ..This study explores how personality might be associated with spine loading during repetitive lifting performed throughout an entire work shift...
  43. ncbi request reprint The influence of lift frequency, lift duration and work experience on discomfort reporting
    Julia Parakkat
    Biodynamics Laboratory, The Ohio State University, Columbus, Ohio 43210, USA
    Ergonomics 50:396-409. 2007
    ..Discomfort should only be used as a supplement to objective measures, such as spinal loading, to assess the risk of low back disorders...
  44. ncbi request reprint The effects of work experience, lift frequency and exposure duration on low back muscle oxygenation
    Gang Yang
    Biodynamics Laboratory, The Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus, OH 43210, USA
    Clin Biomech (Bristol, Avon) 22:21-7. 2007
    ..The aim of this study was to document the changes in low back muscle oxygenation during prolonged lifting activity over an entire workday as of function of work experience and lift frequency...
  45. ncbi request reprint Carrying and spine loading
    J D Rose
    a Biodynamics Laboratory, The Ohio State University, Columbus, OH 43210, USA
    Ergonomics 56:1722-32. 2013
    ..The findings of the study suggest that to achieve optimal carrying in terms of spine loading, loads should be positioned close to the body, even when carrying relatively light loads. ..
  46. ncbi request reprint Networks of internal trunk-loading activities under controlled trunk-motion conditions
    W S Marras
    Department of Industrial and Systems Engineering, Ohio State University, Columbus
    Spine (Phila Pa 1976) 13:661-7. 1988
    ..This information will be useful for the construction of dynamic internal trunk models, and will facilitate the assessment of dynamic loading of the lumbar spine in the workplace...
  47. ncbi request reprint Physical demands and low-back injury risk among children and adolescents working on farms
    W G Allread
    Institute for Ergonomics, The Ohio State University, 1971 Neil Ave, 210 Baker Systems, Columbus, OH 43210, USA
    J Agric Saf Health 10:257-74. 2004
    ..In addition, the specific farm chores more likely to load the spines of youth and thereby contribute to musculoskeletal injury were identified...
  48. ncbi request reprint The quantification of low back disorder using motion measures. Methodology and validation
    W S Marras
    Biodynamics Laboratory, Ohio State University, Columbus, USA
    Spine (Phila Pa 1976) 24:2091-100. 1999
    ..CONCLUSIONS: The quantification of trunk motion can serve as a measure of the extent of a low back disorder. When considered along with other clinical information, the ability to assess and treat low back disorders is enhanced...
  49. ncbi request reprint Myofascial trigger point development from visual and postural stressors during computer work
    D Treaster
    The Biodynamics Laboratory, The Ohio State University, 1971 Neil Ave, 210 Baker Systems, Columbus, OH 43210, USA
    J Electromyogr Kinesiol 16:115-24. 2006
    ..5 cycles). These significant differences between conditions were found for the right trapezius but not for the left. The findings suggest that high visual stress may be involved in the development of the myofascial pain response...
  50. doi request reprint National occupational research agenda (NORA) future directions in occupational musculoskeletal disorder health research
    William S Marras
    The Ohio State University, Columbus, OH 43210, USA
    Appl Ergon 40:15-22. 2009
    ..Efforts to quantitatively link epidemiological, biomechanical loading, soft tissue tolerance, and psychosocial studies should be pursued to establish a better understanding of the pathways of injury and resultant preventive strategies...
  51. ncbi request reprint Workplace design guidelines for asymptomatic vs. low-back-injured workers
    Sue A Ferguson
    Biodynamics Laboratory, Institute for Ergonomics, The Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus, OH 43210, USA
    Appl Ergon 36:85-95. 2005
    ..It is believed that adherence to these guidelines can minimize the risk of recurrent low back disorders due to occupational lifting...
  52. ncbi request reprint Quantification of a meaningful change in low back functional impairment
    Sue A Ferguson
    Department of Integrated Systems Engineering, The Ohio State University, Columbus, 43210, USA
    Spine (Phila Pa 1976) 34:2060-5. 2009
    ..Repeated measures study design...
  53. ncbi request reprint Revised protocol for the kinematic assessment of impairment
    Sue A Ferguson
    Biodynamics Laboratory, Institute for Ergonomics, The Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus, OH 43210, USA
    Spine J 4:163-9. 2004
    ..However, the protocol required testing of five controlled tasks and was relatively time consuming...
  54. ncbi request reprint The influence of individual low back health status on workplace trunk kinematics and risk of low back disorder
    Sue A Ferguson
    Institute for Ergonomics, The Ohio State University, Columbus, Ohio 43210, USA
    Ergonomics 47:1226-37. 2004
    ..502 (0.178) and 0.501 (0.193), respectively. This study suggests that trunk kinematics and subsequent risk estimates are dictated primarily by job design and not influenced by the low back health status of the worker...
  55. ncbi request reprint Differences in motor recruitment and resulting kinematics between low back pain patients and asymptomatic participants during lifting exertions
    Sue A Ferguson
    Biodynamics Laboratory, The Ohio State University, 210 Baker Systems Engineering, 1971 Neil Avenue, Columbus OH, 43210, USA
    Clin Biomech (Bristol, Avon) 19:992-9. 2004
    ..Developing our understanding of temporal muscle and kinematic patterns during manual material handling tasks may provide insight for preventing the cascading series of events leading to chronic low back pain...
  56. ncbi request reprint Differences among outcome measures in occupational low back pain
    Sue A Ferguson
    Biodynamics Laboratory, Institute for Ergonomics, The Ohio State University, Columbus, Ohio 43210, USA
    J Occup Rehabil 15:329-41. 2005
    ..The residual loss in functional performance may indicate a decreased tolerance to physical demand providing potential insight for why recurrent low back pain rates are high...
  57. ncbi request reprint Validity and reliability of sincerity test for dynamic trunk motions
    S A Ferguson
    Biodynamics Laboratory, The Ohio State University, Columbus, OH, USA
    Disabil Rehabil 25:236-41. 2003
    ....
  58. ncbi request reprint The future of research in understanding and controlling work-related low back disorders
    W S Marras
    Department of Industrial and Systems Engineering, Ohio State University, 1971 Neil Avenue, Columbus, OH 43210 1271, USA
    Ergonomics 48:464-77. 2005
    ..It is argued that further efforts to understand these interactions represent the next level of understanding causality of LBDs...
  59. ncbi request reprint The effect of phone design on upper extremity discomfort and muscle fatigue
    Anne Marie Chany
    Ohio State University, Columbus, OH 43210, USA
    Hum Factors 49:602-18. 2007
    ..To compare a small cellular clamshell phone with a traditional office phone in the development of discomfort and muscle fatigue over time during phone use...
  60. ncbi request reprint Grip force and muscle activity differences due to glove type
    Kimberly Kovacs
    Biodynamics Lab, Ohio State University, 1971 Neil Ave, Baker Systems Engineering, Room 210, Columbus, OH 43210, USA
    AIHA J (Fairfax, Va) 63:269-74. 2002
    ..Results indicated significant differences in the effects of different glove types on the peak force, ratio of peak force to normalized flexor muscle EMG activity, and the ratio of peak force to coactivity...
  61. ncbi request reprint Effects of posture on dynamic back loading during a cable lifting task
    Sean Gallagher
    National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, PA 15236 0070, USA
    Ergonomics 45:380-98. 2002
    ..05). Despite the more selective nature of trunk EMG changes due to posture, the magnitude of changes in spinal loading was often quite dramatic. However, average compression values exceeded 3400 N for all cable lifting tasks...
  62. ncbi request reprint The impact of mental processing and pacing on spine loading: 2002 Volvo Award in biomechanics
    Kermit G Davis
    Department of Environmental Health, University of Cincinnati, Ohio, USA
    Spine (Phila Pa 1976) 27:2645-53. 2002
    ..The impact of various levels of mental processing and pacing (during lifting) on spine loading was monitored under laboratory conditions...
  63. ncbi request reprint Estimation of the dynamic spinal forces using a recurrent fuzzy neural network
    Yanfeng Hou
    Department of Electrical and Computer Engineering, University of Louisville, KY 40292, USA
    IEEE Trans Syst Man Cybern B Cybern 37:100-9. 2007
    ..A learning algorithm is derived for the RFNN model...
  64. ncbi request reprint A neuro-fuzzy model for estimating electromyographical activity of trunk muscles due to manual lifting
    Wookgee Lee
    Department of Industrial Management, Kumoh National University of Technology, 188 Shin Pyung Dong, Kumi, South Korea 730 701
    Ergonomics 46:285-309. 2003
    ..4%. It was hypothesized that model performance could be improved by increasing the number of inputs, including additional task variables as well as the subjects' characteristics...
  65. ncbi request reprint An exploratory study of loading and morphometric factors associated with specific failure modes in fatigue testing of lumbar motion segments
    Sean Gallagher
    National Institute for Occupational Safety and Health, Mining Injury Prevention Branch, P O Box 18070, Pittsburgh, PA 15236 0070, USA
    Clin Biomech (Bristol, Avon) 21:228-34. 2006
    ..There is currently little information regarding factors associated with specific modes of motion segment failure using a fatigue failure model...
  66. ncbi request reprint Partitioning the contributing role of biomechanical, psychosocial, and individual risk factors in the development of spine loads
    Kermit G Davis
    Low Back Biomechanics and Workplace Stress Laboratory, Department of Environmental Health, The University of Cincinnati, 3223 Eden Avenue, Cincinnati, OH 45267 0056, USA
    Spine J 3:331-8. 2003
    ..Even less is understood about the relative contribution of these factors with respect to kinematic, kinetic and muscle activity responses, as well as spine loading...
  67. ncbi request reprint The effect of ergonomic interventions in healthcare facilities on musculoskeletal disorders
    Kaori Fujishiro
    University of Illinois at Chicago, Environmental and Occupational Health Sciences, School of Public Health, Illinois 60612 7260, USA
    Am J Ind Med 48:338-47. 2005
    ..While laboratory studies have clearly documented the efficacy of ergonomic devices, few studies have examined their effectiveness in the healthcare workplace...
  68. ncbi request reprint Effect of torso flexion on the lumbar torso extensor muscle sagittal plane moment arms
    Michael J Jorgensen
    Industrial and Manufacturing Engineering Department, Wichita State University, 120 Engineering Building, Wichita, KS 67260 0035, USA
    Spine J 3:363-9. 2003
    ..Anatomical evidence indicates that the moment arms decrease during torso flexion. However, moment arm estimates in biomechanical models that account for individual variability have been derived from imaging studies from supine postures...
  69. ncbi request reprint Torso flexion loads and the fatigue failure of human lumbosacral motion segments
    Sean Gallagher
    National Institute for Occupational Safety and Health, Pittsburgh, PA 15236 0070, USA
    Spine (Phila Pa 1976) 30:2265-73. 2005
    ..5 degrees, and 45 degrees), and lumbosacral motion segments were cyclically loaded using these loads until failure or to a maximum of 10,020 cycles...
  70. ncbi request reprint A comparison of fatigue failure responses of old versus middle-aged lumbar motion segments in simulated flexed lifting
    Sean Gallagher
    NIOSH Pittsburgh Research Laboratory, Pittsburgh, PA 15236 0070, USA
    Spine (Phila Pa 1976) 32:1832-9. 2007
    ..Survival analysis techniques were used to compare the fatigue failure responses of elderly motion segments to a middle-aged sample...
  71. ncbi request reprint Low back pain and the workplace
    Arun Garg
    JAMA 298:403-4; author reply 404. 2007
  72. ncbi request reprint The case for cumulative trauma in low back disorders
    William S Marras
    Spine J 3:177-9. 2003
  73. ncbi request reprint Sagittal plane moment arms of the female lumbar region rectus abdominis in an upright neutral torso posture
    Michael J Jorgensen
    Department of Industrial and Manufacturing Engineering, Wichita State University, Wichita, KS 67260 0035, USA
    Clin Biomech (Bristol, Avon) 20:242-6. 2005
    ..Recent research suggests moment arms of the rectus abdominis are larger when standing versus lying supine...

Research Grants12

  1. BIOMECHANICAL/PSYCHOSOCIAL RISKS FOR LOW BACK DISORDERS
    William Marras; Fiscal Year: 2001
    ..We will also be able to discern when and under what conditions an intervention to improve the psycho social work environment will be likely to reduce LBP and its associated morbidity. ..
  2. Neuro-Fuzzy Prediction of Spine Loads in Response to Ri*
    William Marras; Fiscal Year: 2005
    ..Second, the system will provide insights as to how the various dimensions of risk synergistically impact the musculoskeletal system. Finally, it will facilitate further investigations regarding stability and coactivity. ..
  3. Neuro-Fuzzy Prediction of Spine Loads in Response to Ri*
    William Marras; Fiscal Year: 2004
    ..Second, the system will provide insights as to how the various dimensions of risk synergistically impact the musculoskeletal system. Finally, it will facilitate further investigations regarding stability and coactivity. ..
  4. BIOMECHANICAL/PSYCHOSOCIAL RISKS FOR LOW BACK DISORDERS
    William Marras; Fiscal Year: 2003
    ..We will also be able to discern when and under what conditions an intervention to improve the psycho social work environment will be likely to reduce LBP and its associated morbidity. ..
  5. MUSCLE OVEREXERTION DURING REPETITIVE LIFTING
    William Marras; Fiscal Year: 2003
    ..These results will provide quantitative guidance for the mediation of work-related LBDs for the millions of workers performing materials handling tasks in manufacturing and distribution center environments. ..
  6. Neuro-Fuzzy Prediction of Spine Loads in Response to Ri*
    William Marras; Fiscal Year: 2003
    ..Second, the system will provide insights as to how the various dimensions of risk synergistically impact the musculoskeletal system. Finally, it will facilitate further investigations regarding stability and coactivity. ..
  7. BIOMECHANICAL/PSYCHOSOCIAL RISKS FOR LOW BACK DISORDERS
    William Marras; Fiscal Year: 2002
    ..We will also be able to discern when and under what conditions an intervention to improve the psycho social work environment will be likely to reduce LBP and its associated morbidity. ..
  8. MUSCLE OVEREXERTION DURING REPETITIVE LIFTING
    William Marras; Fiscal Year: 2002
    ..These results will provide quantitative guidance for the mediation of work-related LBDs for the millions of workers performing materials handling tasks in manufacturing and distribution center environments. ..
  9. Neuro-Fuzzy Prediction of Spine Loads in Response to Ri*
    William Marras; Fiscal Year: 2002
    ..Second, the system will provide insights as to how the various dimensions of risk synergistically impact the musculoskeletal system. Finally, it will facilitate further investigations regarding stability and coactivity. ..
  10. MUSCLE OVEREXERTION DURING REPETITIVE LIFTING
    William Marras; Fiscal Year: 2001
    ..These results will provide quantitative guidance for the mediation of work-related LBDs for the millions of workers performing materials handling tasks in manufacturing and distribution center environments. ..
  11. MUSCLE OVEREXERTION DURING REPETITIVE LIFTING
    William Marras; Fiscal Year: 2000
    ..These results will provide quantitative guidance for the mediation of work-related LBDs for the millions of workers performing materials handling tasks in manufacturing and distribution center environments. ..