가방 하중의 크기와 방식에 따른 척추 정적 자세의 변화
Alteration of the Static Posture of Spine under Different Types and Amounts of Loading
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The aim of this study was to investigate the alteration of lumbar spine and trunk postures on different load-carrying types and amounts under static loading. Two load-carrying types(unilateral carrying: UC vs. bilateral carrying: BC) and four different loads(0, 5, 10, and 15 kg) were randomly tested in this study. Carrying a heavy bag would affect human body posture, specifically lumbar spine curvature, which is considered as one of sources of back problems. Previous studies have not paid attention to the approach of the multisegment model of the lumbar spine and trunk. This study separated two compartments of trunk segment(the lumbar and thorax) in the analysis. The multisegment model of the lumbar spine in addition to Helen-Hayes marker set was used. Eight motion analysis cameras and a force plate were utilized. Ten male subjects(mean mass, 70.6 ± 3.97 kg; mean height, 178 ± 4.18 m) having no musculoskeletal disease participated in this study. We analyzed trunk angles in three anatomical planes and the spinal curvature in sagittal and frontal planes. Increased loading in both UC and BC significantly resulted in increases in trunk forward lean but only UC induced increases in trunk lateral lean. In addition, increased loading in BC produced flatten lumbar curvature in sagittal plane. As far as coupling motion, subjects tended to use axial rotation of the lumbar spine in transverse plane in response to increased UC loading. Finally, it is concluded that the increased static loading in UC rather than in BC tends to causes combined alterations of the spinal postures(sagittal and transverse planes together), which would be vulnerable to improper mechanical stresses on the spine.
Abstract
The aim of this study was to investigate the alteration of lumbar spine and trunk postures on different load-carrying types and amounts under static loading. Two load-carrying types(unilateral carrying: UC vs. bilateral carrying: BC) and four different loads(0, 5, 10, and 15 kg) were randomly tested in this study. Carrying a heavy bag would affect human body posture, specifically lumbar spine curvature, which is considered as one of sources of back problems. Previous studies have not paid attention to the approach of the multisegment model of the lumbar spine and trunk. This study separated two compartments of trunk segment(the lumbar and thorax) in the analysis. The multisegment model of the lumbar spine in addition to Helen-Hayes marker set was used. Eight motion analysis cameras and a force plate were utilized. Ten male subjects(mean mass, 70.6 ± 3.97 kg; mean height, 178 ± 4.18 m) having no musculoskeletal disease participated in this study. We analyzed trunk angles in three anatomical planes and the spinal curvature in sagittal and frontal planes. Increased loading in both UC and BC significantly resulted in increases in trunk forward lean but only UC induced increases in trunk lateral lean. In addition, increased loading in BC produced flatten lumbar curvature in sagittal plane. As far as coupling motion, subjects tended to use axial rotation of the lumbar spine in transverse plane in response to increased UC loading. Finally, it is concluded that the increased static loading in UC rather than in BC tends to causes combined alterations of the spinal postures(sagittal and transverse planes together), which would be vulnerable to improper mechanical stresses on the spine.
참고문헌 (26)
- Lindstrom-Hazel,D, "The backpack problem is evident but the solution is less obvious", Work, 32(3), pp.329~338 (2009)
- Smith, B, "Influence of carrying a backpack on pelvic tilt, rotation, and obliquity in female college students", Gait Posture, 23(3), pp.263~267 (2006)
- Brackley, H.M, "Are Children's Backpack Weight Limits Enough?: A Critical Review of the Relevant Literature", Spine, 29(19), pp.2184~2190 (2004)
- 김정룡, "작업부하 평가를 위한 생체역학적 측정방법", 대한인간공학회지, 29(4), pp.445~453 (2010), 대한인간공학회
- Devroey, C, "Evaluation of the effect of backpack load and position during standing and walking using biomechanical, physiological and subjective measures", Ergonomics, 50(5), pp.728~742 (2007)
- Negrini, S, "Postural effects of symmetrical and asymmetrical loads on the spines of schoolchildren", Scoliosis, 2(8), pp.1~7 (2007)
- Brackley, H.M, "Effect of backpack load placement on posture and spinal curvature in prepubescent children", Work, 32(3), pp.351~360 (2009)
- Birrell, S.A, "The effect of military load carriage on 3-D lower limb kinematics and spatiotemporal parameters", Ergonomics, 52(10), pp.1298~1304 (2009)
- Al-Khabbaz, "The effect of backpack heaviness on trunk-lower extremity muscle activities and trunk posture", Gait Posture, 28(2), pp.297~302 (2008)
- Hong, Y, "Changes in gait patterns in 10-year-old boys with increasing loads when walking on a treadmill", Gait Posture, 11, pp.254~259 (2000)
- Chansirinukor, W, "Effects of backpacks on students: measurement of cervical and shoulder posture", Aust. J. Physiother, 47(2), pp.110~116 (2001)
- Hong, Y, "Gait and posture responses to backpack load during level walking in children", Gait Posture, 17(1), pp.28~33 (2003)
- Hong, Y, "Effect of prolonged walking with backpack loads on trunk muscle activity and fatigue in children", J. Electromyogr. Kines, 18(6), pp.990~996 (2008)
- Li, J.X, "The effect of load carriage on movement kinematics and respiratory parameters in children during walking", Eur. J. Appl. Physiol, 90, pp.35~43 (2003)
- Singh, T, "Lower limb dynamics change for children while walking with backpack loads to modulate shock transmission to the head", J. Biomech, 42(6), pp.736~742 (2009)
- Fathallah, F.A, "An assessment of complex spinal loads during dynamic lifting tasks", Spine, 23(6), pp.706~716 (1998)
- Fowler, N.E, "Changes in stature and spine kinematics during a loaded walking task", Gait Posture, 23(2), pp.133~141 (2006)
- de Leva,P, "Adjustments to Zatsiorsky-Seluyanov's segment inertia parameters", J. Biomech, 29(9), pp.1223~1230 (1996)
- Kim, Y.H, "Motion analysis of treadmill walking with various slopes at a normal speed", J. of Biomed. Eng. Res, 18(1), pp.71~78 (1997)
- 손량희, "보행속도에 따른 지면보행과 Treadmill 보행의 비교: 운동분석 및 에너지 소모", 의공학회지, 30(3), pp.226~232 (2009), 대한의용생체공학회
- Field, A, "Discovering statistics" (2000), SAGE Publications Ltd
- Vacheron, J.J., "Changes of contour of the spine caused by load carrying", Surg. Radiol. Anat, 21(2), pp.109~113 (1999)
- Little, J, "Coupled rotations in the lumbar spine-are these a consequence of passive spinal anatomy", Proc. 7th International conference on Modelling in Medicine and Biology, pp.83~92 (2007)
- Edmondston, S.J., "Influence of posture on the range of axial rotation and coupled lateral flexion of the thoracic spine", J. Manip Physiol Ther, 30(3), pp.193~199 (2007)
- Baisden, J.L, "Normative Lumbar Spine Coupling Relationships between Axial Rotation and Lateral Bending", The Spine J, 10(9), pp.124~ (2010)
- Marras, W.S, "Spine loading during trunk lateral bending motions", J. Biomech, 30(7), pp.697~703 (1997)