Shoulder kinematics during cyclic overhead work are affected by a passive arm support exoskeleton

IF 3.1 2区工程技术 Q2 ENGINEERING, INDUSTRIAL Applied Ergonomics Pub Date : 2024-07-26 DOI:10.1016/j.apergo.2024.104357

Giulia Casu , Isaiah Barajas-Smith , Alan Barr , Brandon Phillips , Sunwook Kim , Maury A. Nussbaum , David Rempel , Massimiliano Pau , Carisa Harris-Adamson

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Abstract

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.

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循环高空作业时的肩部运动学受到被动式手臂支撑外骨骼的影响。

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）对上臂骨运动学的影响：方法：20 名参与者在有和没有 ASE 的情况下完成了一项周期性高架钻孔任务。对优势上臂上升和下降阶段的任务持续时间、关节角度和角加速度峰值进行了分析：结果：最大 ASE 扭矩与上升阶段加速度峰值的降低（32.2%；SD 17.8；P 0.001）和手臂内旋姿势（17.6°；SD 12.1；P 结论：ASE 扭矩的降低和手臂加速度峰值的改变都会影响运动员的运动能力：我们观察到的较小的手臂加速度和骨运动学变化支持使用这种 ASE，即使是在最高支撑水平下执行高举循环任务时也是如此。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Ergonomics 工程技术-工程：工业

CiteScore

7.50

自引率

9.40%

发文量

248

审稿时长

53 days

期刊介绍： Applied Ergonomics is aimed at ergonomists and all those interested in applying ergonomics/human factors in the design, planning and management of technical and social systems at work or leisure. Readership is truly international with subscribers in over 50 countries. Professionals for whom Applied Ergonomics is of interest include: ergonomists, designers, industrial engineers, health and safety specialists, systems engineers, design engineers, organizational psychologists, occupational health specialists and human-computer interaction specialists.