The Pennsylvania State University, Department of Kinesiology, University Park, PA 16802, USA.
J Electromyogr Kinesiol. 2013 Oct;23(5):1237-42. doi: 10.1016/j.jelekin.2013.04.011. Epub 2013 Jun 14.
Falls are the leading cause of nonfatal injury across all age groups and a common incident for pregnant women. Thus, there is a critical demand for research to evaluate if walking strategies in pregnant women change throughout pregnancy in order to effectively intervene and minimize the incidence rate. The aim of the present study was to analyze modifications in temporal-spatial parameters as well as muscle activity during hill walking transitions in pregnant women between gestational week 20 and 32. Based upon previous literature, we hypothesized that in comparison to level walking, the transition strides of pregnant women would be distinct between trimesters in order to accommodate the physical changes within twelve weeks. Thirteen pregnant women completed a series of randomly assigned walking conditions on level and hill surfaces during gestational week 20 and 32. Our results demonstrated that pregnant women modulated their gait patterns throughout pregnancy with additional joint flexion as well as muscle activity at the ankle, knee and hip. In summary, pregnant women exaggerate cautious gait patterns by walking slower and wider with greater joint flexion and muscle activity in order to safely transition between level and hill surfaces.
跌倒是非致命性伤害的主要原因，在所有年龄段都很常见，也是孕妇常见的事件。因此，迫切需要研究评估孕妇在整个怀孕期间是否改变行走策略，以便有效干预并降低发生率。本研究旨在分析孕妇在妊娠 20 周至 32 周期间上下坡行走过渡时的时空参数和肌肉活动的变化。基于以往的文献，我们假设与平地行走相比，孕妇的过渡步在三个孕期之间会有所不同，以适应十二周内的身体变化。十三名孕妇在妊娠 20 周和 32 周时在平地和斜坡表面完成了一系列随机分配的行走条件。我们的研究结果表明，孕妇在整个怀孕期间调整了自己的步态模式，踝关节、膝关节和髋关节的关节屈曲和肌肉活动增加。总之，孕妇通过走得更慢、更宽、关节弯曲和肌肉活动更大来夸大谨慎的步态模式，以便在平地和斜坡表面之间安全过渡。
