This study introduces injury risk curves for the lumbar spine for use in the risk assessment of low back pain (LBP) caused by manual lifting of heavy loads. LBP has been a longstanding problem among industrial workers, giving rise to the development of assistive devices. However, quantitative evaluation methods to verify the safety of such devices have not yet been established. The notable biomechanical criterion of 3.4 kN of lumbar compressive force, defined by the National Institute for Occupational Safety and Health, applies only to young, healthy workers with a fixed risk level. This study on injury risk curves clarified the risk level of injury to the lumbar spine due to lumbar compressive force for individuals within a wide age range. The findings can be applied for the design and evaluation of assistive devices as well as the design of ergonomic guidelines for manual work.

中文翻译：

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腰椎的与年龄相关的受伤风险曲线，用于在手动操作中预防腰痛

这项研究介绍了腰椎的受伤风险曲线，用于评估因手动举起重物引起的下背痛（LBP）的风险。LBP一直是工业工人中长期存在的问题，导致了辅助装置的发展。但是，尚未建立用于评估此类设备安全性的定量评估方法。美国国家职业安全与健康研究所定义的显着的腰椎压力3.4 kN生物力学标准仅适用于风险水平固定的年轻健康的工人。这项对伤害风险曲线的研究明确了宽年龄范围内的人由于腰椎受压对腰椎造成伤害的风险水平。