在周期性的头顶作业中，肩部运动学受到被动式手臂支撑外骨骼的影响。
Shoulder kinematics during cyclic overhead work are affected by a passive arm support exoskeleton.
机构信息
Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Italy.
School of Public Health, University of California, Berkeley, CA, USA.
出版信息
Appl Ergon. 2024 Nov;121:104357. doi: 10.1016/j.apergo.2024.104357. Epub 2024 Jul 26.
PURPOSE
We investigated the influence of passive arm-support exoskeleton (ASE) with different levels of torque (50, 75, and 100%) on upper arm osteokinematics.
METHODS
Twenty participants completed a cyclic overhead drilling task with and without ASE. Task duration, joint angles, and angular acceleration peaks were analyzed during ascent and descent phases of the dominant upper arm.
RESULTS
Maximum ASE torque was associated with decreased peak acceleration during ascent (32.2%; SD 17.8; p < 0.001) and descent phases (38.8%; SD 17.8; p < 0.001). Task duration remained consistent. Increased torque led to a more flexed (7.2°; SD 5.5; p > 0.001) and internally rotated arm posture (17.6°; SD 12.1; p < 0.001), with minimal changes in arm abduction.
CONCLUSION
The small arm accelerations and changes in osteokinematics we observed, support the use of this ASE, even while performing overhead cyclic tasks with the highest level of support.
目的
我们研究了不同扭矩水平（50%、75%和 100%）的被动手臂支撑外骨骼（ASE）对上臂运动学的影响。
方法
20 名参与者在使用和不使用 ASE 的情况下完成了一项周期性的头顶钻孔任务。在主导上臂的上升和下降阶段分析了任务持续时间、关节角度和角加速度峰值。
结果
最大 ASE 扭矩与上升阶段（32.2%；SD 17.8；p<0.001）和下降阶段（38.8%；SD 17.8；p<0.001）的加速度峰值降低有关。任务持续时间保持不变。增加扭矩会导致手臂更弯曲（7.2°；SD 5.5；p>0.001）和内旋（17.6°；SD 12.1；p<0.001），而手臂外展的变化很小。
结论
我们观察到的手臂小幅度加速度和运动学变化支持使用这种 ASE，即使在使用最高水平的支撑进行头顶周期性任务时也是如此。
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