Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of seat height of chair on muscle activity of erector spinae and rectus abdominis

의자 좌면 높이가 척추 세움근과 배곧은근의 근 활성도에 미치는 영향

  • Lee, Won-Hwee (Department of Physical Therapy, Jeonju Vision College)
  • 이원휘 (전주비전대학교 물리치료학과)
  • Received : 2017.05.15
  • Accepted : 2017.07.07
  • Published : 2017.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

This study examined the effects of the seat height of a chair on the muscle activity of the erector spinae and rectus abdominis. Thirty healthy subjects were asked to sit on chairs at three different seat heights. The muscle activities of both the erector spinae and rectus abdominis were measured by surface electromyography. The data were analyzed by repeated one way ANOVA and the muscle activity was compared according to the seat height. The alpha level was set to 0.05. The results showed that the muscle activities of the erector spinae were not significantly different among the three seat heights. The muscle activities of the rectus abdominis were significantly different among the three seat heights. Both the rectus abdominis muscle activities were significantly greater in the low seat height than the other seat heights. These results showed that the seat height of the chair affects the muscle activities of the rectus abdominis muscle, leading to musculoskeletal pain, such as low back pain. Therefore, the seat height of a chair with a correct sitting position is important for preventing musculoskeletal pain.

본 연구는 의자 좌면 높이가 척추 세움근과 배곧은근의 근 활성도에 어떠한 영향을 미치는지 알아보고자 실시하였다. 건강한 남녀 30명을 대상으로 세 가지 높이의 의자 좌면에 앉게 하고 양쪽 척추 세움근과 배곧은근의 근활성도를 표면 근전도 장비를 사용하여 측정하였다. 반복측정된 일요인 분산분석을 통해 세 가지 높이의 의자 좌면에 따른 근활성도의 차이를 비교하였고 유의수준(a)은 0.05로 설정하였다. 연구 결과 의자 좌면 높이에 따라 양쪽 배곧은근의 근활성도는 유의한 차이를 보였고 양쪽 척추 세움근의 근활성도는 유의한 차이가 없었다. 양쪽 배곧은근은 낮은 높이의 의자 좌면에서 정상 높이와 높은 높이의 좌면에 비해 근활성도가 유의하게 증가하였다. 본 연구결과를 통해 앉은 자세에서 의자 좌면의 높이는 배곧은근의 근 활성도에 영향을 줄 수 있으며 배곧은근의 근활성도 증가는 요통과 같은 근골격계 통증을 일으킬 수 있으므로 근골격계 통증을 예방하기 위해 바르게 앉은 자세와 함께 의자 좌면 높이는 중요하다.

Keywords

References

  1. A. R. Katz, "Letter by Katz regarding article, "Television viewing time and mortality: the Australian Diabetes, Obesity and Lifestyle Study (AusDiab)", Circulation, vol. 122, no. 13, pp. e471, Sep. 2010. DOI: https://doi.org/10.1161/CIRCULATIONAHA.110.940916
  2. M. T. Hamilton, G. N. Healy, D. W. Dunstan, T. W. Zderic, N. Owen, "Too little exercise and too much sitting: Inactivity physiology and the need for new recommendations on sedentary behavior", Current Cardiovascular Risk Reports, vol. 2, no. 4, pp. 292-298, Jul. 2008. DOI: https://doi.org/10.1007/s12170-008-0054-8
  3. J. A. Levine, S. J. Schleusner, M. D. Jensen, "Energy expenditure of nonexercise activity", The American Journal of Clinical Nutrition, vol. 72, no. 6, pp. 1451-1455, Dec. 2000. https://doi.org/10.1093/ajcn/72.6.1451
  4. S. A. Sahrmann, "Diagnosis and Treatment of Movement Impairment Syndrome", Mosby, USA, pp. 54-57, 2002.
  5. H. Y. Jung, J. K. Ji, S. D. Min, "Real-time Sitting Posture Monitoring System using Pressure Sensor", The Transactions of the Korean Institute of Electrical Engineers, vol. 64, no. 6, pp. 940-947, 2015. DOI: https://doi.org/10.5370/KIEE.2015.64.6.940
  6. K. P. Gill, M. J. Callaghan, "The measurement of lumbar proprioception in individuals with and without low back pain", Spine, vol. 23, no. 3, pp. 371-377, Feb. 1998. DOI: https://doi.org/10.1097/00007632-199802010-00017
  7. L. Ghamkhar, M. Emami, M. A. Mohseni-Bandpei, H. Behtash, "Application of rehabilitative ultrasound in the assessment of low back pain: A literature review", Journal of Bodywork and Movement Therapies, vol. 15, no. 4, pp. 465-477, Oct. 2011. DOI: https://doi.org/10.1016/j.jbmt.2010.07.003
  8. C. Demoulin, V. Distree, M. Tomasella, J. M. Crielaard, M. Vanderthommen, "Lumbar functional instability: a critical appraisal of the literature", Annales De Readaptation Et De Medecine Physique, vol. 50, no. 8, pp. 677-684, Nov. 2007. DOI: https://doi.org/10.1016/j.annrmp.2007.05.007
  9. N. Bogduk, J. E. Macintosh, M. J. Pearcy, "A universal model of the lumbar back muscles in the upright position", Spine, vol. 17, no. 8, pp. 897-913, Aug. 1992. DOI: https://doi.org/10.1097/00007632-199208000-00007
  10. J. H. Lee, S. Y. Park, W. G. Yoo, "Changes in craniocervical and trunk flexion angles and gluteal pressure during VDT work with continuous cross-legged sitting", Journal of Occupational Health, vol. 53, no. 5, pp. 350-355, 2011. DOI: https://doi.org/10.1539/joh.11-0050-OA
  11. S. Watanabe, K. Kobara, Y. Yoshimura, H. Osaka, H. Ishida, "Influence of trunk muscle co-contraction on spinal curvature during sitting", Journal of Back and Musculoskeletal Rehabilitation, vol. 27, no. 1, pp. 55-61, 2014. DOI: https://doi.org/10.3233/BMR-130419
  12. Y. J. Kang, M. H. Lee, H. Y. Yeum, "Study on musculoskeletal pain by posture and types of used chairs", The Journal of Korean Society of Assistive Technology, vol. 6, no. 1, pp. 7-14, 2014.
  13. S. J. Shin, S. H. Lee, M. Y. Jung, "The Effect of Computer Work Position and Workstation on Musculoskeletal Pain", Journal of Korean Society of Occupational Therapy, vol. 12, no. 2, pp. 83-90, 2004.
  14. S. H. Yoon, S. R. Park, H. J. An, "Study on Physical Symptoms by Postures and Conditions of Used Chairs and Desks in an Elementary School Pupils", Journal of Korean Society for Hygienic Science, vol. 4, no. 1, pp. 41-54, 1998.
  15. M. S. Choi, Y. J. Chung, H. W. Jeon, "The Effect of Sitting Postures on Spinal Pelvic Curvature and Trunk Muscle Activation in Low Back Pain", Korean Research Society of Physical Therapy, vol. 16, no. 2, pp. 31-40, 2009.
  16. H. G. Jeong, Y. M. Roh, H. W. Yim, C. Y. Park, C. H. Jeong, "A relationship between cumulative trauma disorder and the type of workstation and chairs in workers with repetitive motion tasks", Korean Journal of Occupation Environment Medicine, vol. 13, no. 2, pp. 152-163, 2001.
  17. P. Hodges, A. K. Holm, S. Holm, L. Ekstrom, A. Cresswell, T. Hansson, A. Thorstensson, "Intervertebral stiffness of the spine is increased by evoked contraction of transversus abdominis and the diaphragm: In vivo porcine studies", Spine, vol. 28, no. 23, pp. 2594-2601, Dec. 2003. DOI: https://doi.org/10.1097/01.BRS.0000096676.14323.25
  18. P. W. Hodges, A. G. Cresswell, K. Daggfeldt, A. Thorstensson, "Three dimensional preparatory trunk motion precedes asymmetrical upper limb movement", Gait & Posture, vol. 11, no. 2 pp. 92-101, Apr. 2000. DOI: https://doi.org/10.1016/S0966-6362(99)00055-7
  19. S. L. Koppenhaver, J. J. Herbert, J. M. Fritz, E. C. Parent, D. S Teyhen, J. S. Magel, "Reliability of rehabilitative ultrasound imaging of the transversus abdominis and lumbar multifidus muscles", Archives of Physical Medicine and Rehabilitation, vol. 90, no. 1, pp. 87-94, Jan. 2009. DOI: https://doi.org/10.1016/j.apmr.2008.06.022
  20. P. W. Marshall, B. A. Murphy, "Core stability exercises on and off a Swiss ball", Archives of Physical Medicine and Rehabilitation, vol. 86, no. 2, pp. 242-249, Feb. 2005. DOI: https://doi.org/10.1016/j.apmr.2004.05.004
  21. J. M. McMeeken, I. D. Beith, D. J. Newham, P. Mulligan, D. J. Critchley, "The relationship between EMG and change in thickness of transversus abdominis", Clinical Biomechanics, vol. 19, no. 4, pp. 337-342, May. 2004. https://doi.org/10.1016/j.clinbiomech.2004.01.007
  22. D. M. Urquhart, P. J. Barker, P. W. Hodges, I. H. Story, C. A. Briggs, "Regional morphology of the transversus abdominis and obliquus internus and externus abdominis muscles", Clinical Biomechanics, vol. 20, no. 3, pp. 233-241, Mar. 2004. DOI: https://doi.org/10.1016/j.clinbiomech.2004.11.007
  23. J. E. Muscolino, "Know the body: Muscle, Bone and Palpation Essentials", Mosby, Elsevier, USA, pp. 250-255, 2012.
  24. S. M. Bierma-Zeinstra, A. M. Bohnen, R. Ramlal, J. Ridderikhoff, J. A. Verhaar, A. Prins, "Comparison between two devices for measuring hip joint motions", Clinical Rehabilitation, vol. 12, no. 6, pp. 497-505, Dec. 1998. DOI: https://doi.org/10.1191/026921598677459668
  25. E. Criswell, "Cram's introduction to surface electromyography second edition", Jones and Bartlett Publishers, USA, pp. 342-349, 2011.
  26. Y. G. Jung. "Effects of leg crossed sitting on the trunk muscle activities during the computer work", Dissertation of Master degree, Yonsei University, 2005.
  27. J. P. Callaghan, J. L. Gunning, S. M. McGill, "The relationship between lumbar spine load and muscle activity during extensor exercises", Physical Therapy, vol. 78, no. 1, pp. 8-18, Jan. 1998. DOI: https://doi.org/10.1093/ptj/78.1.8
  28. F. P. Kendall, E. K. McCreary, P. Provance, "Muscle testing and function with posture and pain", 4th ed. Baltimore, Williams & Wilkins, pp. 147-150, 2007.
  29. S. P. Silfies, D. Squillante, P. Maurer, S. Westcott, A. R. Karduna, "Trunk muscle recruitment patterns in specific chronic low back pain populations", Clinical Biomechanics, vol. 20, no. 5, pp. 465-473, Jun. 2005. DOI: https://doi.org/10.1016/j.clinbiomech.2005.01.007
  30. O. Shirado, T. Ito, K. Kaneda, T. E. Strax, "Flexion-relaxation phenomenon in the back muscles. A comparative study between healthy subjects and patients with chronic low back pain", American Journal of Physical Medicine & Rehabilitation, vol. 74, no. 2, pp. 139-144, Mar-Apr. 1995. https://doi.org/10.1097/00002060-199503000-00010
  31. P. O'Sullivan, W. Dankaerts, A. Burnett, D. Chen, R. Booth, C. Carlsen, A. Schultz, "Evaluation of the flexion relaxation phenomenon of the trunk muscles in sitting", Spine, vol. 31, no. 17, pp. 2009-2016, Aug. 2006. DOI: https://doi.org/10.1097/01.brs.0000228845.27561.e0