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Vibration transmissibility and apparent mass changes from vertical whole-body vibration exposure during stationary and propelled walking
Applied Ergonomics ( IF 3.2 ) Pub Date : 2020-10-10 , DOI: 10.1016/j.apergo.2020.103283
Delphine Chadefaux 1 , Alex P Moorhead 2 , Pietro Marzaroli 2 , Stefano Marelli 2 , Enrico Marchetti 3 , Marco Tarabini 4
Affiliation  

Whole-Body Vibration (WBV) is an occupational hazard affecting employees working with transportation, construction or heavy machinery. To minimize vibration-induced pathologies, ISO identified WBV exposure limits based on vibration transmissibility and apparent mass studies. The ISO guidelines do not account for variations in posture or movement. In our study, we measured the transmissibility and apparent mass at the mouth, lower back, and leg of participants during stationary and propelled walking. Stationary walking transmissibility was significantly higher at the lumbar spine and bite bar at 5 and 10 Hz compared to all higher frequencies while the distal tibia was lower at 5 Hz compared to 10 and 15 Hz. Propelled walking transmissibility was significantly higher at the bite bar and knee at 2 Hz than all higher frequencies. These results vary from previously published transmissibility values for static participants, showing that ISO standards should be adjusted for active workers.



中文翻译:

静止和推动行走期间垂直全身振动暴露的振动传递率和表观质量变化

全身振动 (WBV) 是一种职业危害,影响从事运输、建筑或重型机械工作的员工。为了最大限度地减少振动引起的病理,ISO 根据振动传递率和表观质量研究确定了 WBV 暴露限制。ISO 指南不考虑姿势或运动的变化。在我们的研究中,我们测量了参与者在静止和推动行走期间口腔、下背部和腿部的传播率和表观质量。与所有较高频率相比,腰椎和咬合杆在 5 赫兹和 10 赫兹时的静止行走传递率显着更高,而胫骨远端在 5 赫兹时低于 10 赫兹和 15 赫兹。在 2 Hz 时,咬合杆和膝盖处的推进步行传递率显着高于所有更高频率。

更新日期:2020-10-11
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