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Modeling of Nurses’ Shift Work Schedules According to Ergonomics: A case study in Imam Sajjad (AS) Hospital of Ramsar
Fatemeh Baghipour Sarami, Ali Bozorgiamiri, Mohammad Amin Mououdi, Mohammad Taghipour,
Volume 4, Issue 1 (Journal of Ergonomics 2016)
Abstract

Introduction: Many employees in different professions including nurses work with shifts. On the other hand, different and long shift work  can endanger physical and mental health of nurses. This study, according to ergonomic standards, aimed to design a model for shift working in order to minimize the problems caused by shift work.

Methods: In this study, all 35 nurses working in the emergency ward of Imam Sajjad (AS) Hospital of Ramsar city, Iran, were considered. Then, the information gathered from answering the Morningness-Eveningness questionnaire (MEQ) (Circadian rhythm) and Survey Sampling International (SSI) (personal and social charactristics) questionnaire were changed to a model and then reconstruct after comparing it again with circadian rhythm principals. The final model was implemented with GAMS (gamma-glutamylaminomethylsulfonic acid) and at the end, shift working with ergonomic criteria were proposed.

Results: Shift working were designed for each nurse. Also, the obtained objective function value (Z=1.110223e-16) showed that the designed model was really close to ideal model. According to hospital rules and policies, if five more nurses get added to the currently employed ones, the proposed working program on one hand will improve satisfaction and efficiency of nurses and on the other hand it can decrease the effects of disorders on shift work.

Conclusions: Hospitals can have healthy and motivated workforce by applying the scientific approach to adjust a suitable working plan for their nurses and decrease the number of disabilities and also the rate of early retirement.


Evaluation of Comfort, Usability and Posture of an Ergonomic Sit-stand Desk Converter Developed Based on Anthropometric Data from an Iranian Community
Mohammad Amin Mououdi, Arezoo Sammak Amani, Mohammad Taghipour,
Volume 11, Issue 2 (Iranian Journal of Ergonomics 2023)
Abstract
Objectives: Nowadays, workers are less mobile and more sedentary due to the use of modern technologies in the workplace, and the complications resulting from static work and fixed posture have caused numerous disorders, including musculoskeletal disorders. This study was conducted to evaluate the comfort and usability of the ergonomic sit-stand desk converter with the aim of preventing disorders caused by constant sitting in workers.
Methods: 30 employees and faculty members of a university voluntarily participated in this study and provided informed consent. After the necessary explanations, subjects were provided with two researcher-created questionnaires ( Local Perceived Discomfort (LPD) and Sit-Stand Desk Converter Usability Questionnaire (SSDCUQ)), two methods of posture analysis, two methods of Workstation evaluation and general satisfaction along with 20-8-2 software and an ergonomic desk converter. After the test period, the data was analyzed using SPSS version 22 software and statistical tests such as mean, standard deviation, Spearman's rank correlation coefficient and Pearson correlation coefficient.
Results: The overall mean LPD in the different body parts was 0.48 ± 0.87, indicating that the converter functions in the range of no problem to very little discomfort. The average overall satisfaction with the function of the converter was 3.18 ± 1.08 ,which is in the medium to good range. When analysing the different sitting and standing postures, a significant correlation was also found between the different situations of using the converter (P<0.0005), which indicates an improvement in sitting and standing posture while using the converter.
Conclusion: Height-adjustable workstations are a good choice to reduce sitting time and improve posture. Despite the improvement in sitting and standing posture when using the converter, there are limitations, such as ignoring the software warnings for sitting and standing in the mechanical converter studied.

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