Advertisement

Evaluating the Effectiveness of Estimating Cumulative Loading Using Linear Integration Method

  • Rong HuangfuEmail author
  • Sean Gallagher
  • Richard Sesek
  • Mark Schall
  • Gerard Davis
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 820)

Abstract

Exposure to cumulative loading is a significant risk factor in the development of musculoskeletal disorders (MSD). To better understand the dose-response relationship, it is critically to quantify the cumulative exposure. Different integration methods have been used in estimating cumulative loading (force or torque). The general objective of the integration methods has been to sum the independently calculated task exposure. Each task was calculated by multiplying the magnitude of the task loading times the task duration which is the “area under the loading curve”. An assumption of this linear integration model is that long-time exposure to low forces will result in a similar level of damage as relatively short time exposure to high forces. To evaluate the effectiveness of this model, three loading groups of eccentric exercise with the same “area under the loading curve” were performed by thirty participants (ten in each group). Maximum isometric voluntary contractions (MIVC) and relaxed elbow angle (REA) were collected before, immediately after, and 2, 4, 8 days after the exercise. The REA and MIVC changes after the eccentric exercise were significantly impacted by the loading group. It suggests that estimating cumulative loading using linear integration method may underestimate the impact of high force loading in terms of cumulative muscle damage.

Keywords

Linear integration Cumulative load Eccentric exercise 

Notes

Acknowledgement

The authors wish to thank Chad Abrams and Steve Kisor from RehabWorks for their support during the data collection. Thanks to Aimee Sacks, Heather Murphree, Jackie McCoy, Jean Evans, Joy Shirley, Juan Barnes, Laura Allen, Lurlene Buck from the University Clinic for sharing their expertise and valuable time in this study. This research was supported by the pilot research project from the National Institute for Occupational Safety and Health (NIOSH) Sunshine Education and Research Center.

References

  1. 1.
    Coenen P, Kingma I, Boot CRL, Twisk JWR, Bongers PM, Van Dieën JH (2013) Cumulative low back load at work as a risk factor of low back pain: a prospective cohort study. J Occup Rehabil 23:11–18.  https://doi.org/10.1007/s10926-012-9375-zCrossRefGoogle Scholar
  2. 2.
    Kumar S (1990) Cumulative load as a risk factor for back pain. Spine (Phila Pa 1976) 15:1311–1316.  https://doi.org/10.1097/00007632-199012000-00014CrossRefGoogle Scholar
  3. 3.
    Norman R, Wells R, Neumann P, Frank J, Shannon H, Kerr M, Beaton DE, Bombardier C, Ferrier S, Hogg-Johnson S, Mondloch M, Peloso P, Smith J, Stansfeld SA, Tarasuk V, Andrews DM, Dobbyn M, Edmonstone MA, Ingelman JP, Jeans B, McRobbie H, Moore A, Mylett J, Outerbridge G, Woo H (1998) A comparison of peak vs cumulative physical work exposure risk factors for the reporting of low back pain in the automotive industry. Clin Biomech 13:561–573.  https://doi.org/10.1016/S0268-0033(98)00020-5CrossRefGoogle Scholar
  4. 4.
    Waters T, Yeung S, Genaidy A, Callaghan J, Barriera-Viruet H, Deddens J (2006) Cumulative spinal loading exposure methods for manual material handling tasks. Part 2: methodological issues and applicability for use in epidemiological studies. Theor Issues Ergon Sci 7:131–148.  https://doi.org/10.1080/14639220500111392CrossRefGoogle Scholar
  5. 5.
    Brinckmann P, Biggemann M, Hilweg D (1988) Fatigue fracture of human lumbar vertebrae. Clin Biomech 3:iS1–iiS23.  https://doi.org/10.1016/s0268-0033(88)80001-9CrossRefGoogle Scholar
  6. 6.
    Jäger M, Jordan C, Luttmann A, Laurig W, Dolly Group (2000) Evaluation and assessment of lumbar load during total shifts for occupational manual materials handling jobs within the Dortmund Lumbar Load Study – DOLLY. Int J Ind Ergon 25:553–571.  https://doi.org/10.1016/s0169-8141(99)00043-8
  7. 7.
    Gallagher S, Heberger JR (2013) Examining the interaction of force and repetition on musculoskeletal disorder risk. Hum Factors J Hum Factors Ergon Soc 55:108–124.  https://doi.org/10.1177/0018720812449648CrossRefGoogle Scholar
  8. 8.
    Gallagher S, Schall MC Jr (2017) Musculoskeletal disorders as a fatigue failure process: evidence, implications and research needs. Ergonomics 60:255–269.  https://doi.org/10.1080/00140139.2016.1208848CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Rong Huangfu
    • 1
    Email author
  • Sean Gallagher
    • 1
  • Richard Sesek
    • 1
  • Mark Schall
    • 1
  • Gerard Davis
    • 1
  1. 1.Industrial and Systems Engineering DepartmentAuburn UniversityAuburnUSA

Personalised recommendations