Risk Factors and their Interactions in VDT Workstation Systems

1996 ◽  
Vol 40 (13) ◽  
pp. 637-641 ◽  
Author(s):  
Hongzheng Lu ◽  
Fereydoun Aghazadeh
Keyword(s):  
Risk Factors ◽  
Physical Symptoms ◽  
Computer Users ◽  
Research Model ◽  
Factors Associated ◽  
Work Posture ◽  
Design Variables ◽  
Working Posture ◽  
Workstation Design ◽  
Working Postures

This study examined important risk factors and their interactions associated with physical symptoms reported by VDT users. A research model was developed. A survey was designed and conducted among 88 computer users. The results show that risk factors associated with various physical symptoms are different. Screen glare, awkward working posture, and fatigue are important factors related to physical symptoms. Psychosocial factors significantly interact with other variables, such as demographics variables, and contribute to awkward work posture and psychological stress. Workstation design variables significantly affect working postures.

Modeling of risk factors in the VDT workstation systems

1998 ◽  
Vol 1 (3) ◽  
pp. 189-210
Author(s):  
Hongzheng Lu ◽  
Fereydoun Aghazadeh
Keyword(s):  
Risk Factors ◽  
Regression Analysis ◽  
Physical Symptoms ◽  
Demographic Variables ◽  
Computer Users ◽  
Upper Body ◽  
Research Model ◽  
Ocular Discomfort ◽  
Different Types ◽  
Vdt Operators

The objectives of this research were to: (1) determine the risk factors in the VDT workstation systems associated with the physical symptoms reported by VDT users; and (2) examine the interrelationship among these risk factors. A research model was developed. A survey was then designed and conducted among 88 computer users. Factor analysis and regression analysis methods were used to analyze the data. Different types of physical symptoms experienced by VDT operators are related to different risk factors. Ocular discomfort is significantly related to screen glare. General musculoskeletal and physical symptoms are related to fatigue and awkward work postures. Upper body symptoms are related to awkward work postures. Psychosocial factors significantly interact with other variables, such as demographic variables, and are associated with awkward work postures and psychological stress. Poor workstation designs are associated with awkward work postures which in turn are related to physical symptoms.

Working Posture Assessment in a Small and Medium Industry (SMI): Automotive Repair Facility

2015 ◽  
Vol 761 ◽  
pp. 664-667
Author(s):  
M.S. Syed Mohamed ◽  
Muhammad Nur Hakam Basiri
Keyword(s):  
Risk Factors ◽  
Injury Risk ◽  
Work Related ◽  
Working Posture ◽  
Working Postures ◽  
Repair Facility ◽  
Automotive Repair ◽  
Small And Medium Industry ◽  
Ergonomic Risk Factors ◽  
Ergonomic Risk

In automotive repair facilities worldwide, technicians are exposed to various ergonomic risk factors such as excessive exertions, awkward and static postures. The exposure of several ergonomic risk factors can lead to work related musculoskeletal complaints. This study was set out to examine working postures encountered by automotive service technicians in a small medium industry automotive workshop. A total of 240 observations (n=240) were made, and five types of working positions were identified, namely the “Underneath Vehicle” (vehicle on floor),“Side of Vehicle” (vehicle on floor), “Under the Hood”, “Side of Vehicle” (vehicle on lift), and “Underneath Vehicle” (vehicle on lift). Two positions, which were the “Underneath Vehicle” (vehicle on floor), and the “Side of Vehicle” (vehicle on floor) recorded 69 and 60 occurrences respectively. These two positions posed a significant ergonomic injury risk since the upper limbs, shoulders, spinal flexion combined with static holding were present in those two positions.

Analisa Perbaikan Postur Kerja Dengan Menggunakan Metode OWAS (Ovako Work Analysis System) Dengan Perancangan Fasilitas Di Bagian Penyortiran Batu Gamping PT. Timbul Persada

2019 ◽  
Vol 2 (1) ◽  
pp. 104
Author(s):  
Krishna Tri Sanjaya ◽  
Apreza Dwi Vidyantoro
Keyword(s):  
Work Analysis ◽  
Work Attitude ◽  
Average Value ◽  
Long Period ◽  
A Value ◽  
Work Posture ◽  
Working Posture ◽  
Working Postures ◽  
Analysis System ◽  
Very High

Limestone sorting work at PT. Embossed Persada is a repetitive work attitude and a long period of time, so that it can be at risk of causing Musculoskeletal disorders and discomfort at work. The purpose of this study is to analyze the working posture of limestone sorting operators. There are 3 work postures: limestone sorting work posture has a value of 4141, work posture for limestone removal 2173, and work posture for limestone 3333. Other objectives of this study are to identify work postures that have a risk of Musculoskeletal injury. Based on the results of the categorization of OWAS values, an assessment was obtained: limestone 4141-4 work posture, sludge removal posture 2173-3, work posture inserting limestone 3333-3. The work posture has a very high value where it is necessary to make immediate improvements to the work posture by redesigning the work facilities in the sorting section. Redesign of work facilities carried out to avoid Musculoskeletal interference that is using conveyor aids with a capacity of 9 Tons / Hour. The facility design uses measurements with an average value of Indonesian Ergonomics Anthropometry dataKeyword : Ergonomics, Working Postures, Musculoskeletal, The Design Of The Facility, OWASPekerjaan peyortiran batu gamping di PT. Timbul Persada merupakan sikap kerja yang repetitif dan jangka waktu yang lama, sehingga dapat beresiko menimbulkan gangguan Musculoskeletal dan ketidak nyamanan dalam bekerja. Penelitian ini mencoba untuk mempelajari rangkaian kerja dan aspek Ergonomi yang mempengaruhi postur kerja pada divisi penyortiran tersebut dengan menggunakan metode OWAS (Ovako Work Analysis System), metode ini  digunakan untuk mengevaluasi sikap kerja yang berpotensi mengalami gangguan pada Musculoskeletal dimana postur kerja yang diamati meliputi pergerakan tubuh bagian punggung, bahu, tangan, dan kaki termasuk paha, lutut dan pergelangan kaki. Tujuan dari penelitian ini adalah melakukan analisa postur kerja operator penyortiran batu gamping. Diketahui ada 3 postur kerja : postur kerja pemilahan batu gamping memiliki nilai 4141, postur kerja pengangkatan batu gamping 2173, dan postur kerja memasukan batu gamping 3333. Tujuan lain dari penelitian ini adalah mengidentifikasi postur kerja yang memiliki resiko cedera Musculoskeletal. Berdasarkan hasil pengkategorian nilai OWAS maka, diperoleh penilaian : Postur kerja pemilahan batu gamping 4141-4, postur kerja pengangkatan batu gampng 2173-3, postur kerja memasukkan batu gamping 3333-3. Postur kerja tersebut memiliki nilai yang sangat tinggi dimana perlu dilakukan perbaikan segera terhadap postur kerja dengan perancangan ulang fasilitas kerja pada bagian penyortiran. Perancangan ulang fasilitas kerja yang dilakukan untuk menghindari gangguan Musculoskeletal yaitu menggunakan alat bantu conveyor dengan kapasitas 9 Ton/Jam. Perancangan fasilitas ini dirancang dengan pengukuran menurut nilai rata-rata data Anthropometri Ergonomi Indonesia. Dengan mengevaluasi postur kerja sebelum adanya perbaikan, sehingga hasil dari penelitian ini dapat digunakan sebagai bahan pertimbangan dalam perancangan stasiun kerja yang sesuai dengan aspek-aspek Ergonomi.Kata Kunci : Ergonomi, Postur Kerja, Musculoskeletal, Perancangan Fasilitas, OWAS.

Ergonomics of work space: Changing dynamics on OCRA evaluation and work aids

2020 ◽  
pp. 002072092094059
Author(s):  
Kamaljit Singh Rana ◽  
Jagjit Singh Randhawa ◽  
Parveen Kalra
Keyword(s):  
Manufacturing Industry ◽  
Musculoskeletal Discomfort ◽  
Work Task ◽  
Work Space ◽  
Repetitive Tasks ◽  
Work Posture ◽  
Working Posture ◽  
Workstation Design ◽  
Garment Manufacturing ◽  
Efficient Work

The work space is the sancto sanctorum of the world’s economy. It has become increasingly clear that a functional, efficient work space is conducive to optimum output. Therefore the engineering concepts of comfort and ease of working for long durations have become the mainstay of industries the world over. These concepts are complemented by the inputs of safety, hygiene and worker friendliness especially in the global garment manufacturing industry. They need to be evaluated scientifically. One of these means is the evaluation by using OCRA. The basic concept of OCRA, therefore, is to determine and measure a defined technical action. It examines the series of complex movements necessary to complete a work task, involving the upper limb joints at the shoulder, elbow, wrist and finger level. Various scholars have documented the root causes of musculoskeletal discomfort among the seated workers and have delineated them as the constrained work posture and repetitive tasks. Currently, the researcher is working on three work aid prototypes by incorporating workstation design principles for modifications to improve working posture.

Ergonomics of school workplaces as an important factor in preserving the health of adolescents

2020 ◽  
Vol 60 (11) ◽  
pp. 707-709
Author(s):  
A. V. Ablyaeva
Keyword(s):  
Risk Factors ◽  
Primary School ◽  
Musculoskeletal System ◽  
School Children ◽  
Work Ability ◽  
Primary School Children ◽  
Working Posture ◽  
Working Postures ◽  
Almost All

Introduction. Workplaces of adolescents in school may create risk factors for disorders of the musculoskeletal system, which affect the work ability and quality of future life. The aim of this study was to assess the rationality of the working posture of adolescents at school using the analysis of goniometric indicators. Materials and methods. A total of 414 jobs were studied: 244 primary school children and 170 senior school children. Plots of working postures of teenagers were constructed, and goniometric indicators were compared with the recommended ranges. Results. Almost all goniometric indicators were found to have deviations from the recommended ranges, none of the adolescents had all 8 or at least 7 goniometric indicators included in the range of recommended values, which leads to the formation of an irrational working posture.

scholarly journals Ergonomic Analysis of the Neck Posture in Computer Users and Identifying the Related Risk Factors

2019 ◽  
Author(s):  
Hamidreza Heidari ◽  
Shahram Arsang ◽  
Maryam Mahmoodi ◽  
Fatemeh Ramezani
Keyword(s):  
Risk Factors ◽  
Preventive Measures ◽  
Statistical Tests ◽  
Computer Users ◽  
Chi Square ◽  
Posture Analysis ◽  
Photographic Analysis ◽  
Related Risk ◽  
Workstation Design ◽  
Chi Square Test

Background:Neck disorder is a common complaint in computer users which affects the task performance and fatigue. Several studies confirmed the relation between neck discomfort and working with a computer. But focusing on the root risk factors inducing neck discomfort can be applied for taking preventive measures and improving workstation design. So, the main purpose of this study was the neck posture analysis in computer users and identifying the related risk factors. Methods:This descriptive-analytical study was performed in 2018 on 169 administrative staff in one of the governmental hospitals in Qom. A researcher-made questionnaire was used to investigate neck discomfort and related risk factors. To determine the angle of the neck, photographic analysis method was used. Finally, SPSS software version 22 and appropriate statistical tests including the logistic regression model, two independent t-test, and chi-square test in contingency tables were used to determine the relationship between individual parameters and workstation with neck angles and neck pain. Results:The results showed that two factors of the height (p= 0.023) and the gender (p= 0.012) had a direct statistically significant association with neck disorder statistically. In addition, the anthropometric dimensions, monitor height from desk level was positively correlated with neck discomfort but sitting elbow to eye height was negatively correlated with neck discomfort (p<0.05). Odds Ratio analysis showed that moderate and severe monitor angle compared to neutral posture (monitor angle less than 10 °) can increase neck discomfort as 1.925 and 3.137, respectively. Conclusion: Generally, it can be concluded that workstation design can affect taking a posture in computer users. So, establishing correct workstation criteria such as eye height, monitor height from desk level and sitting elbow to eye height dimensions are very important. However, determination of the proportion of each parameter effect is strongly recommended for other investigations. This can develop preventive measures for reducing neck awkward postures.

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