Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation Method of Physical Workload in Overhead Lifting Posture Using Surface EMG Analysis

sEMG 분석을 이용한 높이 들어올리기 자세에서의 신체적 작업부하의 정량적 평가방법 개발

  • Lee, Young-Jin (Interdisciplinary program of Biomedical Engineering, University of Ulsan) ;
  • Chee, Young-Joon (School of Electrical Engineering University of Ulsan)
  • 이영진 (울산대학교 의용생체공학 협동과정) ;
  • 지영준 (울산대학교 공과대학 전기공학부)
  • Received : 2011.09.15
  • Accepted : 2011.10.17
  • Published : 2011.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

For human factor engineering and wearable robot design, the quantitative assessment of physical workload is needed. Through measuring the surface EMG (sEMG) and analysis, the physical workload in overhead lifting posture is presented in quantitative manner. By normalizing sEMG activities with maximal voluntary contraction (MVC), the inter-subject variability is reduced. In all muscles, %MVC increased as the weight of lifting object increases. In anterior deltoid muscle, the %MVC was 3-4 times higher than the other muscles which imply that this muscle performs the major role in the overhead lifting posture. In fatigue analysis, %MVC and the mean frequency in muscle of anterior deltoid changed markedly when compared with other muscles. Through the suggested procedures and analysis, the physical workload for a specific posture can be represented in quantitative way but the clinical meaning for the value should be investigated further.

Keywords

References

  1. S.Y. Jung, J.W Gang and J.W Koo, "The relationship between grip strength and ground reaction force by change of position when lifting tasks," Journal of the Ergonomics Society of Korea ., vol. 28, no. 3 pp. 41-47, 2009. https://doi.org/10.5143/JESK.2009.28.3.041
  2. J.Y Kim, J.S Park and Y.J Cho, "Biomechanical Measuring Techniques for Evaluation of Workload," Journal of the Ergonomics Society of Korea, vol. 29, no. 4, pp. 445-453, 2010. https://doi.org/10.5143/JESK.2010.29.4.445
  3. G.M Park, T.B Ryu and D.H Kee, "Accuracy Evaluation of MSD-related Risky Work Criterion of Korea Ministry of Labor using Ergonomic Workload Evaluation Methods," Journal of the Ergonomics Society of Korea, vol. 25, no. 2, pp. 119-123, 2006. https://doi.org/10.5143/JESK.2006.25.2.119
  4. M. S. Sanders and E. J. McCormick, Human factors in engineering and design, McGraw-Hill, 1993.
  5. K. H. E. Kroemer, H. J. Kroemer, and K. E. Kroemer-Elbert, Engineering physiology: Bases of human factors/ergonomics, Wiley, 1997.
  6. G. L. Soderberg and National Institute for Occupational Safety and Health, "Selected topics in surface electromyography for use in the occupational setting: expert perspectives," US Dept. of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, 1992.
  7. T. Oberg, "Muscle fatigue and calibration of EMG measurements, "Journal of Electromyography and Kinesiology, vol. 5, no. 4, pp. 239-243, 1995. https://doi.org/10.1016/1050-6411(96)85582-9
  8. N. Strimpakos, G. Georgios, K. Eleni, K. Vasilios, and O. Jacqueline, "Issues in relation to the repeatability of and correlation between EMG and Borg scale assessments of neck muscle fatigue," Journal of Electromyography and Kinesiology, vol. 15, no. 5, pp. 452-465, 2005. https://doi.org/10.1016/j.jelekin.2005.01.007
  9. Y.J Cho, J.Y Kim, "The Effect of the Signal Stationarity on the EMG Frequency Analysis," Journal of the Ergonomics Society of Korea, vol. 29, no. 2, pp. 183-188, 2010. https://doi.org/10.5143/JESK.2010.29.2.183
  10. P. Astrand, "O. & Rodahl, K.(1986): Textbook of work physiology: Physiological basis of exercise,".
  11. T. R. Waters, V. Putz-Anderson, and A. Garg, "Applications manual for the revised NIOSH lifting equation," DHHS (NIOSH) Publication, pp. 94-110, 1994.
  12. J.S Park, H.K Kim and J.Y Choi, "Comparison Analysis of Physiological Work Capacity for Different Tasks," Journal of the Ergonomics society of Korea, vol. 15, no. 2, 1996.
  13. P. Konrad, "The ABC of EMG: a practical introduction to kinesiological electromyography," Scottsdale AZ Noraxon USA, 2005, pp.31-32.
  14. G. Kamen and D. A. Gabriel, Essentials of electromyography, Human Kinetics, 2009, pp. 155-163.
  15. R. Merletti, P. Parker, Electromyography:Physiology, Engineering, and Noninvasive Applications, John Wiley & Sons, 2004, pp. 334-364.
  16. L. Sornmo and P. Laguna, Bioelectrical signal processing, Elsevier, 2005, pp. 337-364.
  17. N. K. Mamaghani, Y. Shimomura, K. Iwanaga, and T. Katsuura, "Mechanomyogram and electromyogram responses of upper limb during sustained isometric fatigue with varying shoulder and elbow postures," Journal of Physiological Anthropology and Applied Human Science, vol. 21, no. 1, pp. 29-43, 2002. https://doi.org/10.2114/jpa.21.29
  18. Gang Li, Hai-feng Chen, Yeong-joon Gil, Wan-qing Wu, Jung-tae Lee, SEMG-based Upper Trapezius-specific Emotional Assessment System: Design and Implementation, J. Biomed. Eng. Res : 362-372, 20090.

Cited by

  1. Relationship between Endurance Times and Frequency Parameters in Surface EMG during Isotonic Contraction Exercises vol.33, pp.3, 2012, https://doi.org/10.9718/JBER.2012.33.3.135