한국운동역학회지 (Korean Journal of Applied Biomechanics)

  • 제20권4호
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  • Pages.387-393
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  • 2010
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  • 1226-2226(pISSN)
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  • 2093-9752(eISSN)
한국운동역학회 (Korean Society of Applied Biomechanics)
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임신 기간 및 출산 후의 임산부 보행의 역학적 에너지 변화

Comparison of Pregnant Women's Mechanical Energy between the Period of Pregnancy and Postpartum

  • 하종규 (서울여자대학교 자연과학연구소) ;
  • 이재훈 (한국체육대학교 대학원 체육학과)
  • Hah, Chong-Ku (Research Institute for Natural Science, Seoul Women's University) ;
  • Yi, Jae-Hoon (Department of Physical Education, Korea National Sport University)
  • 투고 : 2010.10.31
  • 심사 : 2010.12.18
  • 발행 : 2010.12.31
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초록

The purpose of this study was to compare pregnant women's gait parameters and mechanical energies caused by changes in hormone levels and anatomical features such as body mass, body-mass distribution, joint laxity, and musculo-tendinous strength from pregnancy to postpartum. Ten subjects (height: $161{\pm}6.5cm$, mass: $62.7{\pm}10.4\;kg$, $66.4{\pm}9.3\;kg$, $68.4{\pm}7.7\;kg$, $57.2{\pm}7.7\;kg$) participated in the four times experiments (the first, middle, last term and after birth) and walked ten trials at a self-selected pace without shoes. The gait motions were captured with Qualisys system and gait parameters were calculated with Visual-3D. Pregnant women's gait velocities were decreased during the pregnancy periods, but increased after birth. Stride width and cycle time were increased during pregnancy, but decreased after birth. Thigh energy (77.4%) was greater than shank energy (19.06%) or feet (3.54%) about total energy of the lower limbs. Their feet (Left R2=0.881, Right R2=0.852) and shank (Left R2=0.318, Right R2=0.226) energies were significantly increased (positive correlation), but double limb stance time (DLST, R2=0.679) and body total energy (R2=0.138) were decreased (negative correlation) for their velocities. These differences suggest that thigh segment may be a dominant segment among lower limbs, and have something to do with gait velocities. Further studies should investigate joint power and joint work to find energy dissipation or absorption from pregnancy period to postpartum.

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참고문헌

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