Related Experiment Video
Updated: Sep 7, 2025

05:42
An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones
Published on: October 5, 2020
3.3K
Ergonomic evaluation of computer workers
Michelli Belotti Bersanetti1, Camila Gorla1, Aline Mendonça Turci1
1Departamento de Ciências Biológicas e da Saúde, Universidade de Araraquara, Araraquara, SP, Brazil.
Summary
Computer workers
Area of Science:
- Occupational health
- Ergonomics
- Biomechanical analysis
Background:
- Information technology use in offices is increasing, leading to musculoskeletal complaints in computer workers.
- Ergonomic investigations require both self-reported symptoms and objective observational methods.
Purpose of the Study:
- To evaluate ergonomic and biomechanical factors in computer workers.
- To identify symptoms and correlate observational assessments with worker self-perception.
Main Methods:
- Seventy-one computer workers were screened for symptoms and demographics.
- Two blinded observers evaluated participants using the Rapid Office Strain Assessment (ROSA) and Maastricht Upper Extremity Questionnaire (MUEQ).
Main Results:
- No significant difference in computer work duration between symptomatic and asymptomatic participants.
- No correlation found between MUEQ and ROSA scores (p=0.054).
- Asymptomatic participants reported higher job demands and MUEQ scores (p=0.004, p=0.044), despite reporting fewer pain-related complaints.
Conclusions:
- Asymptomatic individuals may face higher job demands, potentially due to a lack of prior significant pain.
- Asymptomatic workers reported other complaints like stiffness and edema.
- Symptomatic individuals experienced difficulties with work time and effort.

