본문 바로가기
  • Home

A Case Study of Lower Body Assisted Wearables by Analysis of Electromyography of Elderly Mold Workers in Construction Site

  • Industry Promotion Research
  • Abbr : IPR
  • 2025, 10(4), pp.239~248
  • DOI : 10.21186/IPR.2025.10.4.239
  • Publisher : Industrial Promotion Institute
  • Research Area : Interdisciplinary Studies > Interdisciplinary Research
  • Received : September 15, 2025
  • Accepted : September 23, 2025
  • Published : October 31, 2025

Jun-Ho Choi 1 In-Sung Kim 1

1호서대학교

Accredited

ABSTRACT

This study is to prevent industrial accidents of elderly mold workers at construction sites, First, a methodology that can quantify the body burden during work and evaluate the effectiveness of wearable assistive devices is presented, and this was demonstrated in the field. Second, the mold work of the architectural framework process was divided into standardized unit work, and the surface electromyography (sEMG) was measured by cross-designing the wearable wearing/non-wearing conditions for elderly workers aged 55 or older and the comparative group. The collected signal was normalized to %MVC after RMS pre-treatment, and the recovery index was calculated by measuring grip strength before and after work. Third, as a result of the analysis, the average and peak %MVC of muscle activity decreased when wearing a wearable, and the fatigue index tended to ease, especially for elderly workers, and the difference effect was confirmed as the decrease was larger. Fourth, the recovery rate of grip strength after work under wearable wearing conditions has improved, providing a basis for rational adjustment of the time required for rest. Fifth, these results show that the musculoskeletal burden of mold work can be precisely assessed, suggesting that applying wearable aids and customized breaks to older workers can contribute to disaster prevention.

Citation status

* References for papers published after 2024 are currently being built.