Ergonomics in Design: The Quarterly of Human Factors Applications

Petju, N., Saadprai, S., Charoenporn, N., & Rungroungdouyboon, B. (2025). The Design and Evaluation of Passive Shoulder Exoskeleton in Reducing Physical Demands. Ergonomics in Design: The Quarterly of Human Factors Applications, 0(0). https://doi.org/10.1177/10648046251374943

Abstract

Technological advancements have increased the risk of work-related musculoskeletal disorders (WMSDs). This study assessed a passive shoulder exoskeleton during screw driving and electrical cable locking tasks in 14 males. Exoskeleton use significantly reduced anterior deltoid, middle deltoid, and pectoralis major muscle activity (%MVC, p < .001), and lowered perceived exertion in the hand/wrist, upper arm, and shoulder (p ≤ .003). Productivity increased (p < .001) and task time decreased (p = .021) with the exoskeleton. These findings demonstrate that passive shoulder exoskeletons effectively reduce physical strain and improve efficiency, offering a practical solution for mitigating WMSDs in labor-intensive industries.

Keywords: passive shoulder exoskeleton, wearable assistive device, upper limb supportive suit, muscle activity, work-related musculoskeletal disorder

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