BIOMECHANICAL/PSYCHOSOCIAL RISKS FOR LOW BACK DISORDERS

产品说明： 在职业上，相关的下背部疾病（LBD）是一个主要的 职业健康问题。 这种健康问题的病因是复杂的 也不太了解 拟议的研究调查的作用 生物力学的工作需求和心理社会工作的特点， 人工材料处理工作中员工的LBD风险。 虽然 与每一类风险相关的丰富知识 由于这些因素，缺乏严格调查这两种因素的研究。 同一工作环境中的危险因素。 因此有 很难估计这些风险类别中的每一个对 与职业有关的LBD的总体风险。 我们假设这两种类型的风险因素作出独立的贡献 LBD的风险，心理社会工作的特点是更多 当生物力学工作要求适中时， 比高的时候低。 本研究采用前瞻性队列设计。 它显著 提高了这一领域调查的科学严谨性标准 通过：（1）可靠的，有效的最先进的措施，心理和社会 工作特点和生物力学工作要求;（2）评估 在多个时间点的曝光变量;（3）使用数组 LBD的结局指标，包括经验证的、高度可量化的临床 下背部功能状态的评估;和（4）足够的权力，正式 评估这两个类别的叠加效应和潜在的相互作用效应 的风险因素。 有了足够的曝光量，我们就能 为了准确估计暴露的程度（包括心理社会和 生物力学）需要降低以降低LBP风险。 我们也将能够 辨别何时以及在何种条件下进行干预，以改善 心理社会工作环境将有可能减少LBP及其相关的 发病率。

DESCRIPTION: Occupationally, related low back disorders (LBDs) represent a major occupational health concern. The etiology of this health problem is complex and poorly understood. The proposed study investigates the role of biomechanical job demands and psycho social work characteristics in increasing LBD risk among employees in manual materials handling jobs. Although there is a wealth of knowledge associated with each of these categories of risk factors, there is a dearth of studies that have rigorously investigated both categories of risk factors in the same work environment. Therefore, it is difficult to estimate the contribution of each of these risk categories to the overall risk for occupationally-related LBDs. We hypothesize that both types of risk factors make independent contributions to the risk of LBDs, and that psycho social work characteristics are more likely to increase risk for LBD when biomechanical job demands are moderate to low than when they are high. The proposed study uses a prospective cohort design. It significantly increases the standard of scientific rigor of investigations in this area through: (1) reliable, valid state-of-the art measures of both psycho social work characteristics and biomechanical job demands; (2) assessments of exposure variables at multiple points in time; (3) the use of an array of outcome measures for LBD including a validated, highly quantifiable clinical assessment of low back functional status; and (4) adequate power to formally assess both additive and potential interactive effects of the two categories of risk factors. With adequate quantification of exposures, we will be able to accurately estimate the extent to which exposures (both psycho social and biomechanical) need to be decreased to reduce LBP risk. We will also be able to discern when and under what conditions an intervention to improve the psycho social work environment will be likely to reduce LBP and its associated morbidity.