Write your message

Search published articles


Showing 104 results for Ergonomic
Design and Psychometric Evaluation of the “Kids Spine Ergonomics Awareness” (KidSEA) Questionnaire
Zahra Jahani, Mahshid Namdari, Nastaran Keshavarz, Mahnaz Saremi,
Volume 13, Issue 2 (8-2025)
Abstract
Objectives: Musculoskeletal disorders, including back pain, are increasingly prevalent among school-aged children. Poor postural habits and improper backpack carriage are significant contributing factors. However, there is currently no comprehensive, standardized tool available to assess children’s knowledge of ergonomics related to spinal health.
Methods: This methodological study involved the development of a questionnaire through a seven-step process. Following the creation of the preliminary version and assessment of face validity, content validity was evaluated using the Content Validity Index (CVI) and Content Validity Ratio (CVR) by ten experts. The reliability of the instrument was assessed using a test-retest procedure with 15 students and internal consistency was evaluated using Cronbach’s alpha coefficient with a sample of 180 students.
Results: The final version of the questionnaire, entitled Kids’ Spine Ergonomics Awareness (KidSEA), comprised 13 items across three domains: "Spinal Anatomy," "Correct Posture," and "Ergonomics of Carrying School Supplies." The CVI and CVR for each item exceeded 0.79 and 0.62, respectively, indicating that all items were validated. Cohen’s kappa coefficient for individual items was above 0.41, and the overall Cronbach’s alpha was 0.74, demonstrating acceptable levels of reliability and internal consistency.
Conclusion: The KidSEA questionnaire is a valid and reliable instrument for assessing knowledge of ergonomic principles related to spinal health in children. It can be utilized to evaluate health literacy concerning spinal care, design targeted interventions, and inform educational programs for children in the studied age group. Further studies are recommended to establish the validity of the instrument across different age groups.

The Effectiveness of a Combined Ergonomic and Exercise Intervention in Optimizing Motor Performance among the Employees of Ilam Petrochemical Company
Maryam Momtazbakhsh, Saeed Ghasemi, Nabi Omidi, Mohammadreza Omidi, Vahideh Menati,
Volume 13, Issue 2 (8-2025)
Abstract
Objectives: Musculoskeletal disorders (MSDs) are among the main occupational health challenges in industries with demanding working conditions, such as petrochemical plants. This study aimed to investigate the effect of a combined ergonomic and exercise intervention on pain reduction and motor performance improvement among the employees of Ilam Petrochemical Company.
Methods: This quasi-experimental study utilized a pre/posttest design with 40 male workers. Participants were randomly assigned to either an intervention group (receiving ergonomic training combined with exercise) or a control group. Data were collected using the Nordic Musculoskeletal Questionnaire and Motor Performance Questionnaire. Following that, the obtained data were analyzed using independent t-tests and repeated measures ANOVA.
Results: The combined intervention significantly reduced pain in the lower back (55%), shoulders (56%), and knees (57%), while improving the total motor performance score (43%; P<0.001). Cohen’s d effect sizes ranged from 1.8 to 2.5, indicating high effectiveness.
Conclusion: The integration of ergonomic and exercise interventions led to a significant reduction in musculoskeletal pain and improvement in motor performance among petrochemical workers. These findings demonstrate the positive impact of the intervention on workers' motor performance indicators.

Evaluating the Impact of Ergonomic Skills Training Programs on Organizational Citizenship Behavior and Employee Productivity: A Case Study of Operational Staff in the Azar Oilfield
Nabi Omidi, Neda Sadat Jafari, Mohammad Reza Omidi, Yadollah Mahmoodi,
Volume 13, Issue 3 (9-2025)
Abstract
Objectives: In high-risk operational environments such as oilfields, physical and psychological factors can undermine employee productivity and positive organizational behaviors. This study aimed to examine the effect of ergonomic skills training on enhancing Organizational Citizenship Behavior  and productivity among operational staff of the Azar oilfield.
Methods: This quasi-experimental study employed a pre-test–post-test design with a control group and was conducted on 40 male operational workers. Participants were randomly assigned to either an ergonomic training group or a control group (20 participants each). Data were collected using the OCB questionnaire by Podsakoff et al. (1990) and the HPQ questionnaire by Hersey and Goldsmith (1980). Analyses included independent t-tests, analysis of covariance (ANCOVA), and within-group comparisons.
Results: After the 4-week intervention, the ergonomic training group showed significant increases in total OCB scores (from 105.6 to 118.4; +12.1%) and HPQ scores (from 128.8 to 145.6; +13.0%) (p < 0.001). The greatest OCB improvements were observed in altruism (+15.3%) and conscientiousness (+14.8%), while HPQ improvements were highest in motivation (+16.2%) and ability (+15.4%). Cohen’s d effect sizes ranged from 1.78 to 2.20, indicating a high level of effectiveness. No significant changes were observed in the control group (p > 0.05).
Conclusion: Ergonomic skills training markedly improved organizational citizenship behavior and productivity among employees of the Azar oilfield. These findings underscore the strategic value of investing in ergonomic training programs to enhance both individual and organizational performance in high-risk workplaces.

Investigating the Effect of Ergonomic Intervention on Job Burnout and Resilience of Nurses
Reza Masoudi, Zahra Saeidi, Shahla Abolhassani, Leili Rabiei,
Volume 13, Issue 3 (9-2025)
Abstract
Objectives: Healthcare staff, due to the nature of their job, are exposed to various occupational hazards including ergonomic stressors, which can affect their health and lead to job burnout. The present study aimed to investigate the effect of ergonomic intervention on job burnout and resilience among employed nurses.
Methods: This semi-experimental study was conducted with 70 nurses employed at Shohada Lordegan Hospital during the years 2018–2019 (1397-1398). The study units were randomly assigned by block randomization into two groups: intervention and control. The ergonomic intervention consisted of four stages (education, work modification, a regular exercise program with supervision, support, and follow-up) applied to the intervention group. The control group received no intervention. Data were collected using a demographic questionnaire and the Maslach Burnout Inventory. The mean scores before, immediately after, and three months after the intervention were compared using SPSS version 23 with independent t-test, chi-square, and repeated measures ANOVA.
Results: There was no significant difference in the mean job burnout score between the two groups before the intervention (p>0.05). However, after the intervention, this difference became significant, with the intervention group showing less job burnout and greater resilience compared to the control group (p<0.001).
Conclusion: The findings of this study showed that implementing ergonomic intervention among nurses can reduce job burnout. Given the effectiveness of the intervention, it is recommended that ergonomic training programs be included in nursing educational curricula.

Page 6 from 6     

© 2025 CC BY-NC 4.0 | Iranian Journal of Ergonomics

Designed & Developed by : Yektaweb |