Laboratory evaluation of the complex interplay between whole-body vibration and spinal posture

全身振动与脊柱姿势之间复杂相互作用的实验室评估

• 批准号: RGPIN-2016-05187
• 负责人: Dickey, James
• 金额: $ 1.89万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=681546
• 关键词: Laboratory; evaluation; complex; interplay; between

Whole-body vibration (WBV) affects heavy mobile machinery operators and is a significant health risk for 7% of the workforce. Vibration exposures vary between industrial environments, for example between mining and forestry environments. Industrial seats are one engineering control measure that can effectively reduce vibration exposures, but we have observed that individual seats are best-suited to attenuate WBV in specific vibration environments they do not work optimally in all applications. I developed a seat selection algorithm for matching seats with vibration environments within my last Discovery Grant. However, the seats are merely one component of the complex workplace environment. Vehicle operators frequently adopt awkward postures, such as neck and trunk rotations, in order to gain the necessary field of view to safely operate the vehicle. Posture directly influences the transmission of vibrations through the body. For example, spinal posture influences the biodynamic responses such as apparent mass and the seat-to-head vibration transmissibility. ***The first short-term goal of this proposal is to evaluate the influence of body posture on their biodynamic response during realistic simulation of occupational tasks. The key aspects of this approach include performing this analysis under realistic simulations using our current virtual reality forklift simulator. The vibrations are produced using a robotic platform, the vehicle seating and controls match the industrial vehicle, the visual environment is simulated using virtual reality, and the workplace tasks are simulated using a gaming software engine. This project will focus on developing signal processing methods for windowing the biodynamic measures to specific postures, similar to Short Time Fourier Transforms for different categories of body posture. This approach will characterize elements such as the apparent softening with increasing excitation amplitude.***The second objective of this proposal is to evaluate the influence of gender and anthropometrics on biodynamic responses during realistic simulation of occupational tasks. This is an important issue for two reasons: it directly relates to the long-term goal of this research program of understanding how vibration energy is transmitted and attenuated in humans, and it will identify the different potential risk factors that may affect the growing number of female workers in Canadian industry.******The novelty of this proposal is combining the basic science approach to quantify biodynamic responses to whole-body vibration, and the influence of body posture, whilst performing these studies in a high-biofidelity virtual workplace environment. This is an important development with implications for both vehicle engineering and ergonomics, and may have broadly reaching implications for reducing the burden of whole body vibration injuries in Canadian industry.**

全身振动（WBV）会影响重型移动机械操作员，并且是7％的劳动力的重大健康风险。振动暴露在工业环境之间，例如采矿环境和林业环境之间。工业座椅是一种工程控制措施，可以有效地减少振动暴露，但我们观察到，在特定的振动环境中，各个座椅是最适合衰减WBV的座椅，它们在所有应用中都无法最佳地工作。我开发了一种座椅选择算法，用于在我的上次发现赠款中与振动环境相匹配的座椅。但是，座位只是复杂工作场所环境的一个组成部分。车辆操作员经常采用尴尬的姿势，例如颈部和躯干旋转，以获取必要的视野以安全地操作车辆。姿势直接影响振动通过人体的传播。例如，脊柱姿势会影响生物动力反应，例如明显的质量和座椅对振动的传播。 ***该提案的第一个短期目标是评估身体姿势对职业任务的现实模拟过程中其生物动力反应的影响。这种方法的关键方面包括使用我们当前的虚拟现实叉车模拟器在逼真的模拟下进行此分析。振动是使用机器人平台产生的，车辆座椅和控制措施与工业车辆相匹配，使用虚拟现实模拟视觉环境，并且使用游戏软件引擎模拟了工作场所任务。该项目将着重于开发信号处理方法，以将生物动力学措施窗口窗口转换为特定姿势，类似于不同类别的身体姿势的短时傅立叶变换。这种方法将表征诸如显而易见的元素随着激发幅度的越来越多的元素。这是一个重要的问题，有两个原因：它直接与该研究计划的长期目标有关，该计划了解振动能量是如何在人类中传播和减弱的，它将确定可能影响加拿大女工数量不断增长的不同潜在风险因素。高生双脂质虚拟工作场所环境。这是一个重要的发展，对车辆工程和人体工程学的影响都有影响，并且可能对减轻加拿大工业的全身振动损伤负担的影响很大。**