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In this research article, a passive upper-limb exoskeleton was evaluated during dynamic operation using surface electromyography (sEMG) to assess its impact on three different muscles: Medial Deltoid (MD), Anterior Deltoid (AD), and Trapezius (Tr). The study involved 10 participants who performed four sequences of flexion: loaded and unloaded, with and without wearing the exoskeleton. The collected sEMG data was processed using a Double Threshold Onset Segmentation (DTOS), and the muscle activation was measured using the Root Mean Square (RMS) of each sEMG burst. The results indicate a significant reduction in an EMG feature related to muscular effort (RMS) when using the exoskeleton (28% reduction without load and 10% reduction with a load on the Anterior Deltoid). However, it was noted that the effectiveness of the exoskeleton is not consistent across all individuals, as some did not show the same reduction in muscular effort. Additionally, transitory effects during acclimation to the exoskeleton were observed, suggesting the need for further investigations into its long-term effects on users.

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Evaluation of a Passive Upper-Limb Exoskeleton’s Electromyographic Response in Dynamic Industrial Operations

  • 会议论文

  • 发表日期：

    2025年

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  • D. P. Campos,
  • M. C. J. Wosch,
  • J. P. Moreto Lourenção,
  • T. T. Moreira,
  • H. B. Toso,
  • J. J. A. Mendes Junior

摘要

In this research article, a passive upper-limb exoskeleton was evaluated during dynamic operation using surface electromyography (sEMG) to assess its impact on three different muscles: Medial Deltoid (MD), Anterior Deltoid (AD), and Trapezius (Tr). The study involved 10 participants who performed four sequences of flexion: loaded and unloaded, with and without wearing the exoskeleton. The collected sEMG data was processed using a Double Threshold Onset Segmentation (DTOS), and the muscle activation was measured using the Root Mean Square (RMS) of each sEMG burst. The results indicate a significant reduction in an EMG feature related to muscular effort (RMS) when using the exoskeleton (28% reduction without load and 10% reduction with a load on the Anterior Deltoid). However, it was noted that the effectiveness of the exoskeleton is not consistent across all individuals, as some did not show the same reduction in muscular effort. Additionally, transitory effects during acclimation to the exoskeleton were observed, suggesting the need for further investigations into its long-term effects on users.