Evaluating the Linear Integration Method of Estimating Cumulative Loading Using an Eccentric Exercise

机译：评估使用偏心运动估算累积负荷的线性积分方法

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The ability to quantify cumulative exposure is critically in understanding dose-response relationship in the development of work-related musculoskeletal disorders. Different integration methods have been used in estimating cumulative loading (force or torque). The general objective of cumulative loading integration methods has been to sum the loading exposure for each individual task, calculate by multiplying the magnitude of the task loading times the task duration, and develop an “area under the curve”. An assumption of this linear integration model is that short time exposure to high forces will result in a similar level of damage as relatively long-time exposure to low forces. In this study, three loading groups of eccentric exercise with the same “area under the curve” were performed by thirty participants (ten in each group). Relaxed elbow angle and maximum isometric voluntary contractions (MIVC) were collected before, immediately after, and 2, 4, 8 days after the exercise. The relaxed elbow angle and the changes in MIVC were significantly impacted by the loading group. This result suggests that the linear integration method of estimating cumulative loading may underestimate the impact of high force loading in terms of cumulative muscle damage.

机译：量化累积暴露的能力是至关重要的与工作有关的肌肉骨骼疾病的发展认识剂量 - 反应关系。不同的集成方法已经在估计累积负载（力或扭矩）被使用。累计负载整合方法的总体目标已经由任务加载时间的大小任务持续时间乘以总结装载曝光为每个单独的任务，计算，并制定了“曲线下面积”。该线性积分模型的一个假设是，短时间暴露在高温力将导致损坏的类似的水平相对长时间暴露于低的力。在这项研究中，离心运动具有相同的“曲线下面积”的三种不同负荷组分别乘三十参与者（每组10）进行。轻松肘关节角度和最大等长自主收缩（MIVC）之前收集，之后立即，和运动后2,4，8天。松弛肘关节角度和在MIVC的变化由装载组显著影响。这一结果表明，推定累计装载的线性积分方法可能会低估高力负载的累积肌肉损伤方面的影响。

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《Human Factors and Ergonomics Society annual meeting》|2018年|1 CD-ROM|共4页
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Rong Huangfu; Sean Gallagher; Richard Sesek; Mark Schall; Gerard Davis;
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中图分类生物工程学（生物技术）;
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Evaluating the Linear Integration Method of Estimating Cumulative Loading Using an Eccentric Exercise

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