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Perception and biomechanics data in a manual handling task: a comparative study

机译：手动处理任务中的知觉和生物力学数据：比较研究

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This paper explores the use of subjective perception tasks and its correlations with biomechanical data in the evaluation of manual material handling. Three main dimensions were considered for perception: physical regroups sensations issued from a specific body area; operative regroups feelings related to the execution of the task; and performance regroups feelings that involve a judgement on the execution or reflect overall sensations. The following questions were then explored. To what extent are perception data related to biomechanics data? Do both approaches lead to similar conclusions or interpretations when effect of practice, format and off-centre were tested? How can they complement one another? The task consisted of transferring 50 series of three 15 kg loads in order to verify the impact of free practice, format (box/cylinder) and load centre of gravity position. Eleven subjects rated perception on a CR-10 scale (Borg 1982) after each series. The session was completed with an interview on perception. The net resulting moment was systematically found to be the best correlated with data perception. While all physical and performance items corresponded in various ways to biomechanics data, perceptions associated with operative dimension appeared to be less related with biomechanical data. As regards the impact of practice, format and off-centre, both approaches would lead to the same conclusions, except for the effect of the off-centre. Verbal data add rational information about how or why perception can or cannot be reflected in biomechanics data. How both approaches can be matched more closely in manual handling is discussed.
机译：本文探讨了主观感知任务的使用及其与生物力学数据的相关性，以评估人工材料的处理。考虑了三个主要方面的感知：从特定身体部位发出的身体重组感觉；操作者重新组合与任务执行相关的感觉；表演会重新组合涉及对执行力的判断或反映整体感觉的感觉。然后探讨了以下问题。感知数据在多大程度上与生物力学数据相关？测试实践，形式和偏心的效果时，两种方法是否得出相似的结论或解释？他们如何相互补充？该任务包括转移50个系列的三个15公斤负载，以验证自由练习，格式（盒子/圆柱体）和负载重心位置的影响。在每个系列之后，有11名受试者以CR-10量表（博格1982）对知觉评分。会议以对知觉的采访结束。有系统地发现最终的净力矩与数据感知的相关性最好。尽管所有物理和性能项目均以各种方式与生物力学数据相对应，但与手术尺寸相关的看法似乎与生物力学数据的相关性较小。关于实践，形式和偏心的影响，除了偏心的影响之外，两种方法都会得出相同的结论。言语数据增加了有关知觉如何或为什么可以或不能反映在生物力学数据中的合理信息。讨论了如何在手动处理中更紧密地匹配这两种方法。

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