Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
권호 표지
DOI QR코드

DOI QR Code

A Comparison of Pelvic, Spine Angle and Buttock Pressure in Various Cross-legged Sitting Postures

다양한 다리 꼬아 앉은 자세에 따른 골반과 척추 각도 및 볼기 압력 비교

  • Kang, Sun-Young (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Kim, Seung-Hyeon (Dept. of Biomedical Engineering & Institute of Medical Engineering, The Graduate School, Yonsei University) ;
  • Ahn, Soon-Jae (Dept. of Biomedical Engineering & Institute of Medical Engineering, The Graduate School, Yonsei University) ;
  • Kim, Young-Ho (Dept. of Biomedical Engineering & Institute of Medical Engineering, College of Health Sciences, Yonsei University) ;
  • Jeon, Hye-Seon (Dept. of Physical Therapy, College of Health Science, Yonsei University/Institute of Health Science, Yonsei University)
  • 강선영 (연세대학교 대학원 물리치료학과) ;
  • 김승현 (연세대학교 대학원 의공학과, 연세의료공학연구원) ;
  • 안순재 (연세대학교 대학원 의공학과, 연세의료공학연구원) ;
  • 김영호 (연세대학교 보건과학대학 의공학과, 연세의료공학연구원) ;
  • 전혜선 (연세대학교 보건과학대학 물리치료학과 및 보건과학연구소)
  • Received : 2011.09.05
  • Accepted : 2011.10.06
  • Published : 2012.02.19
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to investigate the kinematic and kinetic changes that may occur in the pelvic and spine regions during cross-legged sitting postures. Experiments were performed on sixteen healthy subjects. Data were collected while the subject sat in 4 different sitting postures for 5 seconds: uncrossed sitting with both feet on the floor (Posture A), sitting while placing his right knee on the left knee (Posture B), sitting by placing right ankle on left knee (Posture C), and sitting by placing right ankle over the left ankle (Posture D). The order of the sitting posture was random. The sagittal plane angles (pelvic tilt, lumbar A-P curve, thoracic A-P curve) and the frontal plane angles (pelvic obliquity, lumber lateral curves, thoracic lateral curves) were obtained using VICON system with 6 cameras and analyzed with Nexus software. The pressure on each buttock was measured using Tekscan. Repeated one-way analysis of variance (ANOVA) was used to compare the angle and pressure across the four postures. The Bonferroni's post hoc test was used to determine the differences between upright trunk sitting and cross-legged postures. In sagittal plane, cross-legged sitting postures showed significantly greater kyphotic curves in lumbar and thoracic spine when compared uncrossed sitting posture. Also, pelvic posterior tilting was greater in cross-legged postures. In frontal plane, only height of the right pelvic was significantly higher in Posture B than in Posture A. Finally, in Posture B, the pressure on the right buttock area was greater than Posture A and, in Posture C, the pressure on the left buttock area was greater than Posture A. However, all dependent variables in both planes did not demonstrate any significant difference among the three cross-legged postures (p>.05). The findings suggest that asymmetric changes in the pelvic and spine region secondary to the prolonged cross-legged sitting postures may cause lower back pain and deformities in the spine structures.

Keywords

References

  1. 정연길. 컴퓨터 작업 시 다리 꼬기가 체간근육의 근 활성도에 미치는 효과. 원주, 연세대학교 보건환경대학원, 석사학위 논문, 2005:5-20.
  2. 정원준. 바지 뒷주머니에 지갑을 넣고 앉은 자세가 척추기립근 근 활성도에 미치는 영향. 원주, 연세대학교 보건환경대학원. 석사학위 논문, 2009:15-21.
  3. 황선홍. 쪼그려 들기와 허리 굽혀 들기 시 하지관절 움직임과 요추 전만에 관한 생체역학적 분석. 한국정밀공학회지. 2008;25(11):107-118.
  4. Andersson GB. Epidemiological features of chronic low-back pain. Lancet 1999;354(9178):581-585. https://doi.org/10.1016/S0140-6736(99)01312-4
  5. Andersson BJ, Ortengren R, Nachemson AL, et al. The sitting posture: An electromyographic and discometric study. Orthop Clin North Am. 1975;6(1):105-120.
  6. Brinckmann P, Hoefert H, Jogen HT. Sex differences in the skeletal geometry of the human pelvis and hip joint. J Biomech. 1981;14(6):427-430. https://doi.org/10.1016/0021-9290(81)90060-9
  7. Cailliet R. Low Back Pain Syndrome, Philadelphia, F.A. Davis Co., 1988;212-220.
  8. Drummond D, Breed AL, Nerechina R. Relationship of spine deformity and pelvic obliquity on sitting pressure distributions and decubitus ulceration. J Pediatr Orthop. 1985;5(4):396-402. https://doi.org/10.1097/01241398-198507000-00002
  9. Fann AV. The prevalence of postural asymmetry in people with and without chronic low back pain. Arch Phys Med Rehabil. 2002;83(12):1736-1738. https://doi.org/10.1053/apmr.2002.35653
  10. Kasahara S. Miyamoto K, Takahashi M, et al. Lumbar-pelvic coordination in the sitting position. Gait Posture. 2008;28(2):251-257. https://doi.org/10.1016/j.gaitpost.2007.12.004
  11. Kramer J. Pressure dependent fluid shifts in the intervertebral disc. Orthop Clin North Am. 1977;8(1):211-216.
  12. Kuo YL, Tully EA, Galea MP. Video analysis of sagittal spinal posture in healthy young and older adults. J Manipulative Physiol Ther. 2009;32(3):210-215. https://doi.org/10.1016/j.jmpt.2009.02.002
  13. Levangie PK, Norkin CC. Joint Structure and Function: A comprehensive analysis, Philadelphia, F.A. Mosby Inc., 2001;59-62.
  14. Li G, Haslegrave CM. Seated work postures for manual, visual and combined tasks. Ergonomics. 1999;42(8):1060-1086. https://doi.org/10.1080/001401399185144
  15. Murtagh J, Kenna C. Back Pain & Spinal Manipulation. Oxford, Butter worth-Hernemann. 1997;590-598.
  16. Ortiz-Hernandez L, Tamez-Gonzalez S, Martinez-Alcantara S, et al. Computer use increases the risk of musculoskeletal disorders among newspaper office workers. Arch Med Res. 2003;34(4):331-342. https://doi.org/10.1016/S0188-4409(03)00053-5
  17. Panjabi MM, Yamamot I, Oxland TR, et al. How does posture affect coupling in the lumbar spine? Spine 1989;14:1002-1011. https://doi.org/10.1097/00007632-198909000-00015
  18. Sahrmann SA. Diagnosis and Treatment of Movement Impairment Syndromes. New York, Mosby, 2001;61-64.
  19. Snijders CJ, Hermans PF, Kleinrensink GJ. Functional aspects of cross-legged sitting with special attention to piriformis muscles and sacroiliac joints. Clin Biomech (Bristol Aron). 2006;21(2):116-121. https://doi.org/10.1016/j.clinbiomech.2005.09.002
  20. Snijders CJ, Slagter AH, van Strik R, et al. Why leg crossing? The influence of common postures on abdominal muscle activity. Spine (Phila Pa 1976). 1995;20(18):1989-1993. https://doi.org/10.1097/00007632-199509150-00005
  21. White AA 3rd, Panjabi MM. The basic kinematics of the human spine. A review of past and current knowledge. Spine (Phila Pa 1976). 1978;3(1):12-20. https://doi.org/10.1097/00007632-197803000-00003

Cited by

  1. Factors affecting Dysmenorrhea in Undergraduate Students vol.20, pp.2, 2014, https://doi.org/10.5977/jkasne.2014.20.2.350
  2. Effects of different sitting positions on skin temperature of the lower extremity vol.27, pp.8, 2015, https://doi.org/10.1589/jpts.27.2637
  3. Three-dimensional change in the cervical spine in a cross-legged sitting position after a time lapse vol.28, pp.5, 2016, https://doi.org/10.1589/jpts.28.1657
  4. 대학생의 척추측만각 및 체질량지수의 관계 vol.18, pp.3, 2017, https://doi.org/10.5762/kais.2017.18.3.157
  5. 골반경사에 따른 스마트폰 사용이 목세움근과 위등세모근의 근활성도에 미치는 영향 vol.7, pp.4, 2017, https://doi.org/10.22156/cs4smb.2017.7.4.097
  6. The Relationships of Smartphone Usage with Spinal Curvature and Neck or Shoulder Pain in School Children vol.29, pp.4, 2020, https://doi.org/10.15857/ksep.2020.29.4.394