Effectiveness of transfer belts and rotating discs in reducing postural load and perceived exertion in formal caregivers during patient transfers

Escobar-Galindo C.M.; Huamani-Calle M.F.; Villalobos-Tupia J.E. · International Journal of Human Factors and Ergonomics (2025) · DOI: 10.1504/ijhfe.2025.151128

Resumen

To evaluate the effectiveness of a transfer belt and rotating disc in reducing physical load and perceived exertion during bed-to-chair transfers among formal caregivers. A mixed-method, experimental study with 26 caregivers compared manual versus assisted transfers. Muscle activity was assessed using surface EMG, posture with the REBA method, exertion via the Borg CR-10 scale, and transfer time through video analysis. Semi-structured interviews explored user experience. No significant differences in muscle activation were found, though slight reductions were observed. Significant improvements were detected in posture, resulting in a 19% relative improvement in REBA scores, which achieved a safer postural action level when using assistive devices (p = 0.025) and a lower perceived exertion (p = 0.003). Transfer time increased slightly with devices (p = 0.0001), attributed to the learning curve. Interviews indicated improved usability, safety, and reduced strain after brief familiarisation. Although physiological changes were minimal, assistive technologies improved posture, lowered perceived effort, and enhanced transfer safety, supporting their ergonomic value in caregiver settings. Copyright

Instituciones: Universidad Nacional Mayor de San Marcos