Center for Computer-Aided Design, College of Engineering, The University of Iowa, Iowa City, IA 52242, USA.
Department of Civil and Environmental Engineering, College of Engineering, The University of Iowa, Iowa City, IA 52242, USA; Center for Computer-Aided Design, College of Engineering, The University of Iowa, Iowa City, IA 52242, USA.
Appl Ergon. 2014 May;45(3):677-85. doi: 10.1016/j.apergo.2013.09.007. Epub 2013 Sep 26.
Whole-body vibration has been identified as a stressor to supine patients during medical transportation. The transmissibility between the input platform acceleration and the output acceleration of the head, sternum, pelvis, head-sternum, and pelvis-sternum of eight supine subjects were investigated. Vibration files were utilized in the fore-aft, lateral, and vertical directions. The power spectral density across the bandwidth of 0.5-20 Hz was approximately flat for each file. A comparison between a baseline rigid-support and a support with a long spinal board strapped to a litter has shown that the latter has considerable effects on the transmitted motion in all directions with a double magnification in the vertical direction around 5 Hz. The results also showed that the neck-collar has increased the relative head-sternum flexion-extension because of the input fore-aft vibration, but reduced the head-sternum extension-compression due to the input vertical vibration.
全身振动已被确定为在医疗转运过程中对仰卧患者的一种应激源。研究了输入平台加速度与 8 名仰卧受试者头部、胸骨、骨盆、头胸骨和骨盆胸骨的输出加速度之间的传递。振动文件用于前后、左右和垂直方向。每个文件的带宽为 0.5-20 Hz 的功率谱密度大致平坦。与基线刚性支撑的比较支撑物具有绑在担架上的长脊柱板，表明后者对所有方向的传输运动都有很大的影响，在大约 5 Hz 的垂直方向上放大了两倍。结果还表明，由于输入前后振动，颈圈增加了相对的头胸骨屈伸，但由于输入垂直振动，减少了头胸骨伸展压缩。
