Examining the impact of non-neutral sitting postures on vibration transmissibility up the spine

检查非中立坐姿对脊柱振动传递率的影响

• 批准号: 371523-2009
• 负责人: Eger, Tammy
• 金额: $ 1.49万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=483605
• 关键词: Examining; impact; non; neutral; sitting

Operators of mobile machinery are exposed to whole-body vibration. International standards exist to suggest safe exposure durations for vibration exposure; however, the existing standards do not account for increased injury risk associated with non-neutral working postures. Yet, many machine operators have to adopt bent forward and twisted neck and trunk postures in order to operate mobile machinery. In order to understand the impact of non-neutral postures, in combination with whole-body vibration exposures, on injury risk, the transmission of vibration through the body can be studied. This project will measure vibration transmissibility from the seat to several levels of the spine and head under different levels of vibration exposure and rotated trunk/neck postures. If vibration travels through the body differently it could indicate machine operators working in non-neutral postures have a higher injury risk than operators in neutral postures exposed to the same vibration. An improved understanding of vibration transmissibility under non-neutral postures can also be used to improve existing international standards that are used to determine safe vibration exposure durations. Improved standards will help to protect equipment operators from negative health outcomes, such as low-back pain. Injury prevention will be beneficial to machine operators, industry and the Canadian economy.

移动机械的操作人员会受到全身振动的影响。已有国际标准建议振动暴露的安全暴露时间；然而，现有的标准并没有考虑到与非中性工作姿势相关的伤害风险增加。然而，许多机器操作员为了操作移动机械，不得不采取前屈、扭颈和躯干的姿势。为了了解非中性姿势对伤害风险的影响，结合全身振动暴露，可以研究振动在全身的传播。该项目将测量在不同程度的振动暴露和旋转的躯干/颈部姿势下，从座位到脊柱和头部的几个层次的振动传递性。如果振动在身体中的传播方式不同，这可能表明在相同的振动下，以非中性姿势工作的机器操作员比以中性姿势工作的操作员有更高的受伤风险。提高对非中性姿势下振动传递率的理解也可用于改进现有的用于确定安全振动暴露持续时间的国际标准。改进的标准将有助于保护设备操作员免受腰痛等负面健康后果的影响。伤害预防将有利于机器操作员，工业和加拿大经济。