A longitudinal study of the effect of pregnancy on rising to stand from a chair
A longitudinal study of the effect of pregnancy on rising to stand from a chair
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DOI：
10.1016/j.jbiomech.2007.11.015
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发表时间：
2008-01-01
影响因子：
2.4
通讯作者：
Smith, Richard
中科院分区：
文献类型：
--
作者：
Gilleard, Wendy;Crosbie, Jack;Smith, Richard
随着怀孕的进展，从椅子上站起来变得更加困难，这可能会导致生物力学的改变，影响身体部位的肌肉骨骼需求。随着妊娠的进展，下肢和躯干的运动学和动力学适应尚不清楚。九个产妇受试者进行了调查，使用八个摄像头的运动分析系统和两个力板，四次在整个怀孕期间，一次出生后在上升到立场。12个未经产的女性受试者被用来建立自然变化与重新测试的时间段。产妇受试者使用时空，运动学和动力学的策略，以扩大基地的支持，尽量减少推进，增加运动的胸段和尽量减少前躯干大腿并置。对姿势不稳定的恐惧可能使受试者更加谨慎，因为他们能够充分地向前弯曲躯干，所以推进力最小化，有利于保持直立的终端平衡。皇冠版权所有（C）2007由爱思唯尔有限公司出版。保留所有权利。
Rising to stand from a chair becomes more difficult to perform as pregnancy progresses, which may lead to altered biomechanics affecting the musculoskeletal demands on the body segments. The kinematic and kinetic adaptations in the lower limbs and trunk as pregnancy progresses are unknown. Nine maternal subjects were investigated using an eight-camera motion analysis system and two force plates, four times throughout pregnancy and once post-birth during rising to stand. Twelve nulliparous female subjects were used to establish natural variation with retesting over the time period. The maternal subjects used temporal-spatial, kinematic and kinetic strategies to widen the base of support, minimize propulsion, increase motion of the thoracic segment and minimize anterior trunk-thigh apposition. A fear of postural instability may have made the subjects more cautious, and as they were able to adequately flex the trunk forward, propulsion was minimized in favor of maintaining upright terminal balance. Crown Copyright (C) 2007 Published by Elsevier Ltd. All rights reserved.