比较主要从事循环和非循环工作任务的制造业工人的上臂和躯干运动学。
Comparing upper arm and trunk kinematics between manufacturing workers performing predominantly cyclic and non-cyclic work tasks.
机构信息
Auburn University, Department of Industrial and Systems Engineering, 3323F Shelby Center for Engineering Technology, Auburn, AL, 36849-5346, USA.
Marshall University, Department of Applied Sciences and Technology, One John Marshall Drive, Huntington, 25755, WV, USA.
出版信息
Appl Ergon. 2021 May;93:103356. doi: 10.1016/j.apergo.2021.103356. Epub 2021 Jan 14.
Musculoskeletal disorders (MSDs) are common among manufacturing workers. Exposure to non-neutral postures and high movement speeds associated with MSDs among manufacturing workers may depend on the extent of the variability in the work tasks performed (i.e., predominantly "cyclic" versus "non-cyclic" work). The objectives of this study were to (i) compare mean levels of full-shift exposure summary metrics based on both posture and movement speed between manufacturing workers performing predominantly cyclic (n = 18) and non-cyclic (n = 17) tasks, and (ii) explore patterns of between- and within-worker exposure variance and between-minute (within-shift) exposure level and variation within each group. Inertial sensors were used to measure exposures for up to 15 full shifts per participant. Results indicated (i) substantially higher upper arm and trunk movement speeds among workers performing predominantly cyclic tasks relative to workers performing non-cyclic tasks despite similar postures, and (ii) greater exposure variability both between and within workers in the non-cyclic group.
肌肉骨骼疾病（MSD）在制造业工人中很常见。制造业工人中与 MSD 相关的非中立姿势和高运动速度的暴露可能取决于所执行工作任务的可变性程度（即主要是“周期性”与“非周期性”工作）。本研究的目的是：（i）比较主要从事周期性（n=18）和非周期性（n=17）任务的制造业工人在姿势和运动速度方面的全 shift 暴露总结指标的平均水平，（ii）探索每个组内的组内和组间暴露差异以及组内每分钟（每个 shift 内）暴露水平和变化的模式。使用惯性传感器来测量每个参与者最多 15 个完整 shift 的暴露情况。结果表明：（i）尽管姿势相似，但主要从事周期性任务的工人的手臂和躯干运动速度明显更高，而从事非周期性任务的工人的运动速度则较低；（ii）非周期性组内的暴露差异无论是在组间还是组内都更大。
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