Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Biomechanical Analysis of Lower Limb Joint Motions and Lumbar Lordosis during Squat and Stoop Lifting

쪼그려 들기와 허리 굽혀 들기 시 하지관절 움직임과 요추 전만에 관한 생체역학적 분석

  • Hwang, Seon-Hong (Department of Biomedical Engineering, Graduate School of Yonsei Univ.) ;
  • Kim, Young-Eun (Department of Mechanical Engineering, Dankook Univ.) ;
  • Kim, Young-Ho (Department of Biomedical Engineering, Yonsei Univ.)
  • 황선홍 (연세대학교 대학원 의공학과) ;
  • 김영은 (단국대학교 기계공학과) ;
  • 김영호 (연세대학교 의공학부)
  • Published : 2008.11.01
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Abstract

In this study, lower extremity joint kinematics and kinetics and lumbar lordosis were investigated for two different symmetrical lifting techniques(squat and stoop) using the three-dimensional motion analysis. Twenty-six male volunteers lifted boxes weighing 5, 10 and 15kg by both squat and stoop lifting techniques. There were not significant differences in maximum lumbar joint moments between the two techniques. The hip and ankle contributed the most part of the support moments during squat lifting, and the knee flexion moment played an important role in stoop lifting. The hip, ankle and lumbar joints generated power and only the khee joint absorbed power in the squat lifting. The knee and ankle joints absorbed power, the hip and lumbar joints generated power in the stoop lifting. The bi-articular antagonist muscles' co-contraction around the knee joint during the squat lifting and the eccentric co-contraction of the gastrocnemius and semitendinosus were found to be important for straightening up during the stoop lifting. At the time of lordotic curvature appearance in the squat lifting, there were significant correlations in all three lower extremity joint moments with the lumbar joint. Differently, only the hip moment had significant correlation with the lumbar joint in the stoop lifting. In conclusion, the knee extension which is prominent kinematics during the squat tilling was produced by the contributions of the kinetic factors from the hip and ankle joints(extensor moment and power generation) and the lumbar extension which is prominent kinematics during the stoop lifting could be produced by the contributions of the knee joint kinetic factors(flexor moment, power absorption, bi-articular muscle function).

Keywords

References

  1. Anthony, H. W., "Diagnosis and Management of Low Back Pain and Sciatica," American family physician, Vol. 52, No. 5, pp. 1333-1341, 1995
  2. Frymoyer, J. W.and Cats-Baril, W., "Predictors of Low Back Pain Disability," Clinical Orthopaedics & Related Research, Vol. 221, pp. 89-98, 1987
  3. Koopman, F. S., Edelaar, M., Slikker, R., Reynders, K., Van der Woude, L. H. V. and Marco, H. J. M., "Effectiveness of a Multidisciplinary Occupational Training Program for Chronic Low Back Pain: A Prospective Cohort Study," Am. J. of physical medicine & rehabilitation, Vol. 83, No. 2, pp. 94-103, 2004 https://doi.org/10.1097/01.PHM.0000107482.35803.11
  4. Chen, Y. L., "Changes in Lifting Dynamics after Localized Arm Fatigue," International J. of Industrial Ergonomics, Vol. 25, No. 6, pp. 611-619, 2000 https://doi.org/10.1016/S0169-8141(99)00048-7
  5. Burgess-Limerick, R., Shemmell, J., Barry, B. K., Carson, R. G. and Abernethy, B., "Spontaneous Transitions in the Coordination of a Whole Body Task," Human Movement Science, Vol. 20, Issues 4-5, pp. 549-562, 2001 https://doi.org/10.1016/S0167-9457(01)00067-7
  6. Hsiang, S. M., Brogmus, G. E. and Courtney, T. K., "Low Back Pain (LBP) and Lifting Technique - A Review," International J. of Industrial Ergonomics, Vol. 19, No. 1, pp. 59-74, 1997 https://doi.org/10.1016/0169-8141(95)00086-0
  7. Van Dieen, J. H., Marco, H. J. M. and Toussaint, H. M., "Stoop or squat: a Review of Biomechanical Studies on Lifting Technique," Clin. Biomech., Vol. 14, Issue 10, pp. 685-696, 1999 https://doi.org/10.1016/S0268-0033(99)00031-5
  8. Jager, M. and Luttman, A., "Biomechanical Analysis and Assessment of Lumbar Stress during Load Lifting using a Dynamic 19-Segment Human Model," Ergonomics, Vol. 32, Issue 1, pp. 93-112, 1989 https://doi.org/10.1080/00140138908966070
  9. Straker, L., "Evidence to Support using Squat, Semi-squat and Stoop Techniques to Lift Low-lying Objects," International J. of Industrial Ergonomics, Vol. 31, No. 3, pp. 149-160, 2003 https://doi.org/10.1016/S0169-8141(02)00191-9
  10. Burgess-Limerick, R., "Squat, Stoop, or Something in Between?" International J. of Industrial Ergonomics, Vol. 31, No. 3, pp. 143-148, 2003 https://doi.org/10.1016/S0169-8141(02)00190-7
  11. Han, J. S., "The Study for Evaluating the Physical Loading Condition Utilizing Muscle Force Predict Model on the Working Posture of the Transportation Industry," J. Biomed. Eng. Res., Vol. 22, No. 1, pp. 109-117, 2001
  12. Winter, D. A., "Overall Principle of Lower Limb Support during Stance Phase of Gait," J. Biomech., Vol. 13, No. 11, pp. 923-927, 1980 https://doi.org/10.1016/0021-9290(80)90162-1
  13. Hwang, S. H., Ryu, K. H., Keum, Y. K. and Kim, Y. H., "Gait Analysis on Unexpected Missing Foot Steps," Journal of the KSPE, Vol. 24, No. 1, pp. 85-92, 2007
  14. Hof, A. L., "On the Interpretation of the Support Moment," Gait & Posture, Vol. 12, Isseu 3, pp. 196-199, 2000 https://doi.org/10.1016/S0966-6362(00)00084-9
  15. Lombard, W. P., "The Action of Two-joint Muscles," Am. Phys. Ed. Rev., Vol. 8, pp. 141-145. 1903
  16. Lombard, W. P. and Abbott, F. M., "The Mechanical Effects Produced by the Contraction of Individual Muscles of the Thigh of the Frog," Am. J. Phys., Vol. 20, Issue 1, pp. 1-60, 1907 https://doi.org/10.1119/1.1927482
  17. Doorenbosch, C. A. M., Harlaar, J., Roebroeck, M. E. and Lankhorst, G. J., "Two Strategies of Transferring from Sit-to-Stand; the Activation of Monoarticular and Biarticular Muscles," J. Biomech., Vol. 27, No. 11, pp. 1299-1307, 1994 https://doi.org/10.1016/0021-9290(94)90039-6
  18. McGinity, G., Irrgang, J. J. and Pezzullo, D., "Biomechanical Considerations for Rehabilitation of the Knee," Clinical Biomechanics, Vol. 15, Issue 3, pp. 160-166, 2000 https://doi.org/10.1016/S0268-0033(99)00061-3
  19. Escamilla, R. F., Fleisig, G. S., Zheng, N., Barrentine, S. W., Wilk, K. E. and Andrews, J. R., "Biomechanics of the Knee during Closed Kinetic Chain and Open Kinetic Chain Exercises," J. ACSM, Vol. 30, No. 4, pp. 556-569, 1998
  20. Zajac, F. E., Neptune, R. R. andKautz, S. A., "Biomechanics and Muscle Coordination of Human Walking Part II: Lessons from Dynamical Simulations and Clinical Implications," Gait & Posture, Vol. 17, Issue 1, pp. 1-17, 2003 https://doi.org/10.1016/S0966-6362(02)00069-3
  21. Mitnitski, A. B., Yahia, L. H., Newman, N. M., Gracovetsky, S. A. andFeldman, A. G., "Coordination Between the Lumbar Spine Lordosis and Trunk Angle during Weight Lifting," Clinical Biomechanics, Vol. 13, Issue 2, pp. 121-127, 1998 https://doi.org/10.1016/S0268-0033(97)00044-2
  22. McGill, S. M., Hughson, R. L. and Parks, K., "Changes in Lumbar Lordosis Modify the Role of the Extensor Muscles," Clinical Biomechanics, Vol. 15, Issue 10, pp. 777-780, 2000 https://doi.org/10.1016/S0268-0033(00)00037-1
  23. Gracovetsky, G., "Function of the Spine," J. Biomed. Eng., Vol. 8, No. 3, pp. 217-223, 1986 https://doi.org/10.1016/0141-5425(86)90087-7
  24. Dolan, P. and Adams, M. A., "Influence of Lumbar and Hip Mobility on the Bending Stresses Acting on the Lumbar Spine," Clinical Biomechanics, Vol. 8, Issue 4, pp. 185-192, 1993 https://doi.org/10.1016/0268-0033(93)90013-8
  25. Garg, A. and Moore, J. S., "Prevention Strategies and the Low Back in Industry," Occupational Medicine, Vol. 7, No. 4, pp. 629-640, 1992
  26. Garg, A. and Herrin, G. D., "Stoop or Squat, a Biomechanical and Metabolical Evaluation," IIE Transactions, Vol. 11, Issue 4, pp. 293-302, 1979 https://doi.org/10.1080/05695557908974474
  27. Welbergen, E., Kemper, H. C. G., Knibbe, J. J., Toussaint, H. M. and Clijssen, L., "Efficiency and Effectiveness of Stoop and Squat Lifting at Different Techniques," Ergonomics, Vol. 34, Issue 5, pp. 613-624, 1991 https://doi.org/10.1080/00140139108967340
  28. Duplessis, D. H., Greenway, E. H., Keene, K. L., Lee, I. E., Clayton, R. L., Metzler, T. and Underwood, F. B., "Effect of Semi-rigid Lumbosacral Orthosis Use on Oxygen Consumption during Repetitive Stoop and Squat Lifting," Ergonomics, Vol. 41, Issue 6, pp. 790-797, 1998 https://doi.org/10.1080/001401398186649