The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Changes of relative impulse of foot on carrying 5 types of schoolbag during level walking

가방 휴대 방법에 따른 보행 시 발의 비례추진력 변화

  • Pack, Soo-Jin (Department of Rehabilitation Science, Graduate school of Daegu University) ;
  • Kim, Min-Hee (Department of Rehabilitation Science, Graduate school of Daegu University) ;
  • Kim, Jin-Sang (Department of Physical Therapy, College of Rehabilitation Science, Daegu University)
  • 박수진 (대구대학교 대학원 재활과학과) ;
  • 김민희 (대구대학교 대학원 재활과학과) ;
  • 김진상 (대구대학교 재활과학대학 물리치료학과)
  • Received : 2009.05.12
  • Accepted : 2009.07.04
  • Published : 2009.09.25
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Abstract

Purpose: The purpose of this study was to analyze the changes of the relative impulse of the foot when carrying 5 types of schoolbag during level walking. Methods: Forty-four normal subjects were divided into 5 groups according to the method of carrying a bag: carrying no bag (condition 1), a backpack (condition 2), a shoulder bag (condition 3), a cross bag (condition 4) and a one-hand bag (condition 5). To evaluate the partial relative impulse, 7 areas were measured on the sole of a foot: the hallux, toe, 1st metatarsal head (Met1) and the 2nd & 3rd metatarsal heads (Met2/3), the 4th & 5th metatarsal heads (Met4/5), mid foot and heel. Repeated one-way analysis of variance (ANOVA) and independent t-tests were used to analyze the statistical data. Results: In the right foot, the relative impulses in every areas revealed no significant difference (p>0.05), however, the relative impulses at Met1, Met2/3, Met4/5 and heel were significantly different between the different conditions (p<0.05). There were significant differences on comparing the relative impulse between left and right foot within one condition, the mid foot in condition 2, as well as the hallux and Met1 in condition 3 (p<0.05). In condition 4, the toe, Met1, Met4/5 and mid foot were significantly different (p<0.05). The values at the hallux, toe and Met1 in condition 5 also were significantly different (p<0.05). Conclusion: These findings showed that the symmetrical relative impulse of the foot was present in the case of carrying a backpack, but there was an extra load on specific regions and asymmetrical relative impulses in the case of carrying a shoulder bag, a across bag and a one-hand bag. (ED note: this abstract is not clear. You need to work on it.)

Keywords

References

  1. Ahn JS. The effects of asymmetric load of shoulder bag on trunk and pelvis movement patterns of normal adult during gait. Yonsei University. Dissertation of Master's Degree. 2006.
  2. Macias BR, Murthy G, Chambers H et al. Asymmetric loads and pain associated with backpack carrying by children. J Pediatr Orthop. 2008;28(5):512-7. https://doi.org/10.1097/BPO.0b013e31817d8143
  3. Oh JH, Choi SN. Effects of the length of schoolbag on gait posture. Journal of Sport and Leisure Studies. 2007;30:619-29.
  4. Jo SC. Effects of backpack weight on elementary school boy's walking. The Korean Journal of Physical Education, 2001;19(2):303-10.
  5. Kim MH. Changes in neck muscle electromyography and forward head posture during carrying of various schoolbags by children. Yonsei University. Dissertation of Master's Degree. 2006.
  6. Kim CK, Shin DM. Kinematic analysis of book bag weight on gait cycle and posture of youth. J Journal of Sport and Leisure Studies. 1995;3(1):175-85.
  7. U DP. Analysis of gait characteristics and physiological loads on carrying tasks. Donga University. Dissertation of Doctorate Degree. 2001.
  8. Knapik J, Harman E, Reynolds K. Load carriage using packs: A review of physiological, biomechanical and medical aspects. Appl Ergon. 1996;27(3):207-16. https://doi.org/10.1016/0003-6870(96)00013-0
  9. Weir E. Avoiding the back-to-school backache. CMAJ. 2002;167(6):669.
  10. Kim YJ, Ji JG, Kim JT et al. A comparison study for mask plantar pressure measures to the difference of shoes in 20 female. Korean Journal of Sport Biomechanics. 2005;14(3):381-3.
  11. Kim JT, Park SH. The displacement of center of pressure during adult female gait based on the body mass. Kyungnam Physical education study. 2005;10(1):65-9.
  12. Kim JH, Hwang BY, Oh TY. Influence of trunk control using pelvic movements upon the foot pressure in patients with hemiplegia. J Kor Soc Phys Ther. 2007;19(5):11-9.
  13. Kim K, Park YH, Bae SS. Intermachine validity and reliability of the F-mat and F-scan. J Kor Soc Phys Ther. 2000;12(2):29-37.
  14. Mueller MJ, Strube MJ. Generalizability of in-shoe peak pressure measures using the F-scan system. Clin Biomech (Bristol, Avon). 1996;11(3):159-64. https://doi.org/10.1016/0268-0033(95)00047-X
  15. Rosenbaum D, Becker HP. Plantar pressure distribution measurements. Technical background and clinical applications. Foot and Ankle Surgery. 1997;3(1):1-14. https://doi.org/10.1046/j.1460-9584.1997.00043.x
  16. Moon JH, Lee HS, Kim MY et al. Foot pressure distribution of normal children. The Journal of Korean Academy of Rehabilitation Medicine. 1997;21(4):755-61.
  17. Kim DY, Park CI, Jang YW et al. Trunk kinematic analysis in hemiplegic gait. Korean Journal of Stroke 2007;9(2):128-33.
  18. Park ES, Park CI, Kim JY et al. Foot pressure distribution and path of center of pressure(COP) of foot during ambulation in the children with spastic cerebral palsy. The Journal of Korean Academy of Rehabilitation Medicine. 2002;26(2):127-32.
  19. Park CI, Bae HS, Ko YH et al. The characteristics of foot pressure in children with mild spatic diplegic cerebral palsy related to medial arch formation. The Journal of Korean Academy of Rehabilitation Medicine. 2003;27(1):33-7.
  20. Cho HY. The analysis of the kinematic variable on loading response during the walking. Academic essay of Honam University. 1998;19(2):1305-16.
  21. Hong Y, Li JX. Influence of load and carrying methods on gait phase and ground reactions in children's stair walking. Gait Posture. 2005;22(1):63-8. https://doi.org/10.1016/j.gaitpost.2004.07.001
  22. Lee SY, Son GS, Jeon HJ et al. The effects of therapeutic exercise on the balance and gait in older adults. J Kor Soc Phys Ther. 2007;19(2):1-10. https://doi.org/10.1589/jpts.19.1
  23. Gong WT, Han JT, Ro HL. The influence of contract-relax exercise on functional leg length inequality and muscle activity. J Kor Soc Phys Ther. 2009;21(1):49-56. https://doi.org/10.1589/jpts.21.49
  24. Koh EK, Jung DY. A review of biomechanical treatments for the diabetic foot. J Kor Soc Phys Ther. 2007;19(5):51-63.
  25. Kim JH. An influence of trunk control using pelvic movement upon the foot pressure of patient with hemiplegia. Yong-in University. Dissertation of Master's Degree. 2007.
  26. Moon HW, Park SI, Rah UW et al. Foot pressure measurement using F-scan system in normal korean adults. Journal of Korean Academy of Rehabilitation Medicine. 1995;19(2):289-95.
  27. Crowe A, Samson MM. 3-D analysis of gait: The effects upon symmetry of carrying a load in one hand. Human Movement Science. 1997;16(2-3):357-65. https://doi.org/10.1016/S0167-9457(96)00061-9
  28. Fowler NE, Rodacki ALF, Rodacki CD. Changes in stature and spine kinematics during a loaded walking task. Gait Posture. 2006;23(2):133-41 https://doi.org/10.1016/j.gaitpost.2004.12.006
  29. Kobayashi N, Warabi T, Kato M et al. Posterior-anterior body weight shift during stance period studied by measuring sole-floor reaction forces during healthy and hemiplegic human walking. Neurosci Lett. 2006;399(1-2):141-6. https://doi.org/10.1016/j.neulet.2006.01.042
  30. Resch S, Apelqvist J, Stenstrom A et al. Dynamic plantar pressure measurement in 49 patient with diabetic neuropathy with or without foot ulcers. Foot and Ankle Surgery. 1997;3:165-74. https://doi.org/10.1016/S1268-7731(97)80015-X
  31. Chow DH, Kwok ML, Au-Yang et al. The effect of backpack load on the gait of normal adolescent girls. Ergonomics. 2005;48(6):642-56. https://doi.org/10.1080/00140130500070921
  32. Negrini S, Negrini A. Postural effects of symmetrical and asymmetrical loads on the spines of schoolchildren. Scoliosis. 2007;2:8. https://doi.org/10.1186/1748-7161-2-8
  33. Duckworth T, Betts RP, Franks CI et al. The measurement of pressures under the foot. Foot Ankle. 1982;3:130-41. https://doi.org/10.1177/107110078200300303
  34. Franks CL, Betts RP, Duckworth T. Microprocessor-based image processing system for dynamic foot pressure studies. Med Biol Eng Comput. 1983;21:566-72. https://doi.org/10.1007/BF02442381
  35. Soames RW. Foot pressure patterns during gait. J Biomed Eng. 1985;7(2):120-6. https://doi.org/10.1016/0141-5425(85)90040-8
  36. Matsuo T, Hashimoto M, Koyanagi, M et al. Asymmetric load-carrying in young and elderly women; Relationship with lower coordination. Gait & Posture. 2008;28(3):512-7.