车辆全身振动暴露对骑行后静态站立平衡的影响

IF 1.9 Q3 ENGINEERING, MECHANICAL Vibration Pub Date : 2023-04-01 DOI:10.3390/vibration6020021
J. Tatsuno, S. Maeda
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引用次数: 1

摘要

本研究旨在研究全身振动(WBV)暴露对站立平衡功能紊乱的影响,假设陆路运输行业发生打滑、绊倒和坠落事故的原因与车辆行驶时全身振动暴露有关。在实验中,10名参与者在驾驶模拟器(DS)中进行了60分钟的虚拟驾驶,以暴露于WBV。此外,在暴露前、暴露后立即、暴露后2分钟和暴露后4分钟进行站立平衡测量。通过结合WBV暴露的两个程度以及驾驶员和乘客的情况,考虑了四种情况。本研究的重点是站立平衡的两个指标,即总长度和被膜面积,以及相对于振动暴露前值的变化率。在没有振动暴露的控制条件下,变化率几乎恒定在1.0,而在振动暴露条件下变化。有趣的是,在驾驶员条件下,暴露后2分钟的变化率仍然很高,但在乘客条件下,变化率降至几乎1.0。由于驾驶员和乘客条件下在座椅表面测得的振动加速度没有差异,因此认为驾驶员和乘客状态之间的差异与加速踏板操作引起的疲劳有关。考虑到在大多数情况下,站立平衡在4分钟后恢复到1.0的百分比,本研究建议,参与者在DS暴露于0.5m/s2 rms的振动60分钟的实验中,允许休息几分钟。将进行进一步的基础实验,以引入另一种WBV暴露评估,包括作为健康指标的站立平衡丧失。
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Effect of Whole-Body Vibration Exposure in Vehicles on Static Standing Balance after Riding
This study aims to investigate the effects of whole-body vibration (WBV) exposure on the disturbance of standing balance function assuming that the cause of slip, trip and fall accidents in the land transportation industry is related to WBV exposure when traveling in vehicles. In the experiment, ten participants underwent 60 min of virtual driving in a driving simulator (DS) for WBV exposure. In addition, standing balance measurements were conducted before exposure, immediately after exposure, 2 min after exposure and 4 min after exposure. Four conditions were considered by combining two magnitudes of WBV exposure and the driver and passenger conditions. This study focused on two indexes of standing balance, namely, total length and enveloped area and the rate of change relative to the value before the vibration exposure was calculated. The rate of change remained almost constant at 1.0 in the control condition without vibration exposure, whereas that under vibration exposure conditions varied. Interestingly, the rate of change at 2 min after exposure remained high in the driver condition, but it decreased to almost 1.0 in the passenger condition. Since no difference appeared in the vibration acceleration measured at the seating surface between the driver and passenger conditions, it was believed that the difference between the driving and passenger conditions was related to fatigue caused by the accelerator-pedal operation. As a result of considering the percentage of the standing balance that returned to 1.0 after 4 min in most conditions, this study proposed that a rest period of several minutes be allowed from the experiment in which the participants were exposed to vibration at 0.5m/s2 rms for 60 min at the DS. Further basic experiments will be conducted to introduce another WBV exposure assessment, including loss of standing balance as a health indicator, to ISO 2631-1.
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CiteScore
3.20
自引率
0.00%
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0
审稿时长
10 weeks
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