| Title |
Evaluating the Applicability of Lumbar-Support Wearable Robots in Construction Work Environments |
| Authors |
Sunae Cho ; Seong-Min Park ; Geon-Ho Kim ; Su-ji Sim ; Chae-Eun Lee ; Jae-Yoon Kim ; Jin-Woo Kim |
| DOI |
https://dx.doi.org/10.6106/KJCEM.2026.27.5.125 |
| Keywords |
Wearable Robot; Workload Assessment; NASA-Task Load Index (NASA-TLX); Construction Management |
| Abstract |
This study evaluates the effect of lumbar-support wearable robots on subjective workload during simulated construction tasks involving material carrying and rebar-tying. Three conditions were compared: no device and two types of wearable robots with different assistance mechanisms. Subjective workload was assessed using NASATLX, and the results were analyzed using one-way repeated-measures ANOVA with Bonferroni-adjusted pairwise comparisons. Significant differences were observed in Physical Demand and Effort. Post-hoc analysis indicated that Physical Demand was significantly lower in one wearable robot condition compared to the no-device condition, while Effort was significantly lower in the other wearable robot condition. However, no significant difference was found between the two wearable robot conditions. Qualitative interviews further revealed perceived lumbar support as well as concerns regarding fit, heat, and movement restriction. These findings suggest that lumbar-support wearable robots can reduce perceived physical workload and effort in construction-related compound tasks. Nevertheless, further investigation is required to evaluate wearability, motion interference, and field applicability. |