Misch Jacob, Sprigle Stephen
Rehabilitation Engineering and Applied Research (REAR) Laboratory, Georgia Institute of Technology, Atlanta, GA, USA.
J Rehabil Assist Technol Eng. 2022 Apr 23;9:20556683221092322. doi: 10.1177/20556683221092322. eCollection 2022 Jan-Dec.
Whole-body vibration (WBV) experienced during manual wheelchair use was quantified across several types of terrain (tile, sidewalk, decorative bricks, expanded metal grates). Over-ground travel was controlled using a robotic propulsion system. Vibrations along the vertical axis were measured with a triaxial accelerometer mounted to the seat of the wheelchair. Root-mean-square acceleration values were compared to the health guidance exposure limits established by the European Council using the WBV calculator tool published by the Health and Safety Executive (HSE). Vibrations along the vertical axis were well below the exposure values associated with health risks. Even the most aggressive tactile surface (grates) tested in this study would require more than 14 h of daily travel to reach the "exposure action value," and more than 24 h would be required to reach the "exposure limit value". Considering the average cumulative duration of active self-propulsion among manual wheelchair users is around an hour or less, none of the tested conditions were deemed unsafe or damaging.
在几种类型的地形（瓷砖、人行道、装饰砖、金属格栅）上，对手动轮椅使用过程中经历的全身振动进行了量化。使用机器人推进系统控制地面行走。通过安装在轮椅座位上的三轴加速度计测量垂直轴上的振动。使用健康与安全执行局（HSE）发布的全身振动计算器工具，将均方根加速度值与欧洲理事会制定的健康指导暴露限值进行比较。垂直轴上的振动远低于与健康风险相关的暴露值。即使在本研究中测试的最具刺激性的触觉表面（格栅），每天也需要超过14小时的行程才能达到“暴露行动值”，超过24小时才能达到“暴露限值”。考虑到手动轮椅使用者主动自行推进的平均累计持续时间约为一小时或更短，所测试的条件均未被视为不安全或有损害。
