The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Effect of Various Leg-Crossing Positions on Muscle Activities of Rectus Femoris, Tensor Fascia Latae, and Hamstring in Healthy 20's Adults

  • Lee, Won-Hwee (Department of Physical Therapy, College of Jeonju Vision) ;
  • Kang, Tae-Hee (Department of Physical Therapy, College of Jeonju Vision) ;
  • Kim, Jeong-Ha (Department of Physical Therapy, College of Jeonju Vision) ;
  • suryanti, Tri (Department of Physical Therapy, College of Jeonju Vision)
  • Received : 2015.09.15
  • Accepted : 2015.10.25
  • Published : 2015.10.25
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Abstract

Purpose: The purpose of this study was to investigate the effect of leg-crossing positions on muscle activities of rectus femoris, tensor fascia latae, and hamstring in healthy 20's adults. Methods: Twenty healthy subjects were asked to perform three leg-crossing positions, leg crossing (LC), tailor crossing (TC), and ankle crossing (AC). Surface electromyography (EMG) was used to evaluate the activities of rectus femoris, tensor fascia latae, and hamstring during upright sit posture (UP) and three leg-crossing positions and UP was compared to three leg-crossing positions. Repeated one way ANOVA was used for data analysis. The alpha level was set at 0.05. Results: The results showed significant difference in the muscle activities of rectus femoris, tensor fascia latae, and hamstring among leg-crossing positions. The muscle activity of the rectus femoris was significantly lower in LC and TC positions than UP. The muscle activity of tensor fascia latae was significantly higher in LC position than UP and other leg-crossing positions. The muscle activity of hamstring was significantly higher in LC and TC positions and significantly lower in AC position than in UP. Conclusion: Our study suggests that the activity of hip muscles was affected by pelvic and knee alignment in various leg-crossing positions.

Keywords

References

  1. Li G, Haslegrave CM. Seated work postures for manual, visual and combined tasks. Ergonomics. 1999;42(8):1060-86. https://doi.org/10.1080/001401399185144
  2. Ortiz-Hernandex L, Tamez-Gonzalez S, Martinez-Alcantara S et al. Computer use increase the risk of musculoskeletal disorders among newspaper office workers. Arch Med Res. 2003;34(4):331-42. https://doi.org/10.1016/S0188-4409(03)00053-5
  3. Park YN, Bae YS. Comparison of muscle performance of the lumbar region and head alignment according to the length of sitting time. J Kor Phys Ther. 2013;25(6):386-92.
  4. Kwon JW, Nam SH, Choi YW et al. The effect of different head positions in sitting on head/shoulder posture and muscle activity. J Kor Phys Ther. 2013;25(4):217-23.
  5. Neumann DA. Kinesiology of the musculoskeletal system: Founcations for physical rehabilitation. St. Louis, Mosby, 2002:387-476.
  6. Jung YG. Effects of leg crossed sitting on the trunk muscle activities during the computer work. Yonsei university. Dissertation of Master's degree. 2005.
  7. Lee JH, Park SY, Yoo WG. Change in craniocervical and trunk flexion angles and gluteal pressure during VDT work with continuous cross-legged sitting. J Occup Health. 2011;53:350-5. https://doi.org/10.1539/joh.11-0050-OA
  8. Watanabe S, Kobara K, Ishida H et al. Influence of trunk muscle co-contraction on spinal curvature during sitting cross-legged. Electromyogr Clin Neurophysiol. 2010;50:187-92.
  9. Jung WJ. Effects of a wallet in the back trouser pocket on paraspinal muscle activity in sitting. Yonsei university. Dissertation of Master's degree. 2009.
  10. Snijders CJ, Slagter AH, van Strik R et al. Why leg crossing? The influence of common postures on abdominal muscle activity. Spine. 1995; 20(18):1989-93. https://doi.org/10.1097/00007632-199509150-00005
  11. Pinar R, Sabuncu N, and Oksay A. Effects of crossed leg on blood pressure. Blood Press. 2004;13(4):252-4. https://doi.org/10.1080/08037050410000903
  12. Snijders CJ, Hermans PF, Neising R et al. The influence of slouching and lumbar support on iliolumbar ligaments, intervertebral discs and sacroiliac joints. Clin Biomech (Bristol. Avon). 2004;19(4):323-9. https://doi.org/10.1016/j.clinbiomech.2004.01.006
  13. Takishita S, Touma T, Kawazoe N et al. Usefulness of leg-crossing for maintaining blood pressure in a sitting position in patients with orthostatic hypotension - case reports. Angiology. 1991;42(5):421-5. https://doi.org/10.1177/000331979104200512
  14. Kang SY, Kim, SH, Ahn SJ et al. A comparison of pelvic, spine angle and buttock pressure in various cross-legged sitting postures. PTK. 2012; 19(1):1-9.
  15. Kim TH, Seo HK, Hong WT. The change of muscle activities of trunk muscles during various leg-crossing positions in low back pain patients. J Kor Phys Ther. 2007;19(5):1-10. https://doi.org/10.1589/jpts.19.1
  16. Muscolino JE. Know the body: Muscle, bone, and palpation essentials. St Louis, Mosby, 2011:339-78.
  17. Sahrmann SA. Diagnosis and treatment of movement impairment syn-dromes. St Louis, Mosby, 2002:121-74.
  18. Cram J, Kasman G, Holtz J. Introduction of surface electromyography. Gaithersburg, MD: Aspen Publishers, 1998:358-71.
  19. Chae YW, Park JW, Park S. Effects of knee malalignment on static and dynamic postural stability. J Kor Phys Ther. 2015;27(1):7-11.
  20. Kang MH, Oh JS, Park BJ et al. Comparison of the lumbar flexion angle and EMG activity in trunk muscles in individuals with and without lim-ited hip flexion range of motion during visual display terminal work with cross-legged sitting. J Phys Ther Sci. 2013;25:1537-9. https://doi.org/10.1589/jpts.25.1537
  21. Sahrmann SA. Movement system impairment syndromes of the ex-tremities, cervical and thoracic spines. St Louis, Elsevier, 2011:354-406.