Category: Journal

The Effect of Hand Arm Vibration Symptoms among Palm Oil Harvester with the Usage of Cantas Machine in Selangor

The Effect of Hand Arm Vibration Symptoms among Palm Oil Harvester with the Usage of Cantas Machine in Selangor

Mohd Noraiman MOHD FADZIL1, Shamsul Bahri MD TAMRIN1

1Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences,
43400, UPM Serdang, Malaysia

Page 13 – 24   |   Vol. 4, No. 1 (2019)   |    Available online on 1 June 2019

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Abstract

A cross-sectional study was conducted to determine the effect of hand arm vibration symptoms on ‘Cantas’ machine among palm oil harvester in Selangor. Questionnaire survey is use as strategy of enquiry for achieving the objectives. A vibration analyser HVM 100 attached to a tri-accelerometer was used. The vibration level for working hours is 2.30 m/s2 and is deemed safe as specified in ISO 5349-1. The prevalence of hand-arm vibration syndrome (HAVS) based on reported symptoms through questionnaires was 39.4%. None of them reported persistence in the symptoms. The ergonomics risk factor mean score was 2.93 out of 4. The issues on ergonomic design was weight, maintenance, portability, ease of usage and efficiency. In conclusion, regular screening for early signs of vibration-related damage is needed as an important part of preventing the aggravation of health problems. The workers also gained awareness regarding vibration exposure and safe working procedure on using Cantas machine

Keywords

Cantas machine, HAVS, vibration, palm oil industry, ergonomic issue

Acknowledgement

We would like to thank to Department of Civil Engineering, Faculty of Engineering and also laboratory staff from Environmental and Occupational Health Lab, Faculty of Medicine and Health Sciences University Putra Malaysia for the support. Not to forget, our sincerest gratitude to all the respondent in giving full commitment in this study.

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

The Modernist Utopian Vision of Social Equality: The Monobloc Single Moulded Plastic Chair Globalised Design Thinking

The Modernist Utopian Vision of Social Equality: The Monobloc Single Moulded Plastic Chair Globalised Design Thinking

Stephen T.F. POON

School of Media, Arts & Design, Asia Pacific University of Technology & Innovation, Malaysia

Page 48 – 52   |   Vol. 4 No. 2 (2019)   |    Available online on 1 Dec 2019

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Abstract

The discussion in this research is about how the utopian ideology that emerged from designing ordinary products demanded by mass consumer markets triggered the plastic monobloc pandemic and influenced social reformation, both in aesthetics aspects of industrial design applications, and in equalising the global post-World-War II economy. Modernism through mass production processes provides a platform for social response by urban designers, who strive for more sustainable ways to achieve idealised utopian conditions by introducing characteristics of durability, cheapness and sturdiness, while developing mass production techniques. The ubiquitous monobloc chair is an example of social activism in design thinking, as mass manufacturing enables society to afford less costly, everyday furnishing materials such as injection-moulded plastic chairs. From the creative standpoint, many in design fields may disqualify and disclaim the value of homogenous plastic furniture as a tangible expression of social reformation. Nevertheless, monoblocs ride on the mass-consumer utility factor and is promoted from economic benefit rather than aesthetics standpoint. What should we make of this, and how does design modernism fit into the 21st-century ideals of “utopian” society today?

Keywords

Monobloc Chair, Mass Manufacturing, Modernism, Social Equality, Utopia

Acknowledgement

–

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

A Case Study: Assessment of Equipment Design, Task and Musculoskeletal Disorders Among Physiotherapists

A Case Study: Assessment of Equipment Design, Task and Musculoskeletal Disorders Among Physiotherapists

Abdul Halim Bin AHMAD ZAKI1,Nor Kamaliana Binti KHAMIS1,Roslizawati Binti NAWAWI2, Muhammad Aizat Bin SHAMSUDIN1

1Centre of Materials Engineering and Smart Manufacturing (MERCU), Faculty of Engineering and Built Environtment, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia.

2Physiotherapy Department, KPJ Healthcare University College, Nilai, Negeri Sembilan

Page 41 – 47   |   Vol. 4 No. 2 (2019)   |    Available online on 1 Dec 2019

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Abstract

Musculoskeletal disorders (MSDs) is one of the most common injuries to the physiotherapists at the treatment center. There are many factors leading to this problem, such as repeated movement, manual handling of heavy equipment, and inappropriate posture. Therefore, the aim of this paper is to identify the risk of MSDs among physiotherapist and investigate the specific treatment designs. This study used questionnaire method that has been distributed to patients and physiotherapist at one of the treatment center in Peninsular Malaysia. Rapid Entire Body Assessment (REBA) was performed also on the physiotherapist to evaluate the effectiveness of the equipment before and after improvements. There were three equipment that have been considered in this study; hydro collator pack, luminous and non-luminous infrared machine. Based on the questionnaire, majority of the physiotherapists were exposed to the risk of MSDs in their occupational task. The REBA’s finding shows there is a decrement of the score after improvement have been made on the luminous machine. Based on paired sample tests on the REBA score before and after improvements, the P value (significance<0.05). It proves that there is a big different in the REBA score after the tools was modified. In conclusion, this study was related to assessments and improvements that can be performed on treatment equipment and the tasks among physiotherapist.

Keywords

Musculoskeletal Disorders (MSDs), Occupational Safety and Health, Rapid Entire Body Assessment (REBA), Treatment equipment.

Acknowledgement

This study was supported by Universiti Kebangsaan Malaysia (UKM) under grant GUP-2019-019. We would like to express our gratitude to the Faculty of Engineering and Built Environment (FKAB), UKM Malaysia for the support in this study. Not to forget, our sincerest gratitude to all respondents who took part in this research.

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

Multiple Ergonomic Assessments Analysis on Distribution Workers at Printing Industry

Multiple Ergonomic Assessments Analysis on Distribution Workers at Printing Industry

Nurainaa ABILMIHARBI1*, Syed N.S. KHAIRANI2

1Mechanical Engineering Department, Universiti Tenaga Nasional (UNITEN), 43000 Kajang, Selangor, Malaysia.

2Mechanical Engineering Programme, Universiti Tenaga Nasional (UNITEN), 43000 Kajang, Selangor, Malaysia

*email: Nurainaa@uniten.edu.my

Page 35 – 40   |   Vol. 4 No. 2 (2019)   |    Available online on 1 Dec 2019

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Abstract

Number of accident cases reported to the Malaysian Social Security Organization (SOCSO) which are related to the number of diseases of musculoskeletal system and connective tissue is increasing rapidly since 2013 to 2017 where most of the accident cases reported comes from the manufacturing industry. Work related musculoskeletal disorder (WMSD) often happens among the workers due to manual material handling (MMH) while performing their everyday working task. The workers in printing and publishing industries especially in distribution section are exposed to risk of getting WMSD diseases. This is because every worker in the distribution section needs to perform MMH tasks such as lifting, bending, twisting, pulling, and pushing which involves repetitive motion. The objective of this study is to investigate the prevalence of musculoskeletal disorders diseases among the distribution workers by using multiple ergonomic assessment analysis such as Nordic Discomfort Questionnaire, Quick Exposure Check (QEC) Questionnaire and REBA Analysis. The results from Nordic Discomfort Questionnaire indicates that majority of the workers experienced discomfort on their upper back, lower back, hips and knee. Meanwhile, QEC Questionnaire shows that high exposure risk on the lower back among workers which are in the group age of 31-40 years old. Lastly, REBA Analysis shows that necessary or immediate changes needs to be take on two of the chosen working postures in order to prevent from much serious WMSD developing in future among the workers. Improvement or mitigation related to the design of the workstation might reduce the development of WMSD among the workers and further reduce the risky awkward postures performed by the workers which will indirectly increase the performance of the worker and increase the productivity level of the company.

Keywords

WMSD, MMH, REBA, Nordic, QEC

Acknowledgement

The authors would like to acknowledge and express gratitude to all participants who took part in this study.

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

Work-Related Musculoskeletal Problems and the Associated Risk Factors Among Rubber Tappers: A Case Study at a Village in Northern Peninsular Malaysia

Work-Related Musculoskeletal Problems and the Associated Risk Factors Among Rubber Tappers: A Case Study at a Village in Northern Peninsular Malaysia

Ezrin Hani SUKADARIN1*, Sudaratt Pet TONG1, Balqis Syahirah JAMALUDIN1, Junaidah ZAKARIA1 and Nur Syazwani Mohd NAWI2

1Occupational Safety and Health Program, Faculty of Industrial Sciences and Technology (FIST), Universiti Malaysia Pahang, Malaysia.

2Pusat Pengajian Pengurusan Teknologi dan Logistik, Universiti Utara Malaysia, Malaysia

*Corresponding author: ezrin@ump.edu.my

Page 29 – 34   |   Vol. 4 No. 2 (2019)   |    Available online on 1 Dec 2019

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Abstract

Rubber tapping involves repetitive and high paced work, static muscle loading, non-neutral body postures, forceful physical exertion, and many other potential risk factors for development of work-related musculoskeletal problems (WRMP). In this research, a cross-sectional study was carried out to identify the prevalence of WRMP among rubber tappers, to determine the psychosocial factors that contribute to WRMP, and to explore the relationship between psychosocial factors and physical factors among rubber tappers. Data collection was done using three instruments, namely Nordic Musculoskeletal Questionnaire (NMQ), Job Content Questionnaire (JCQ) and Rapid Upper Limb Assessment Tools (RULA). In total, 70 rubber tappers participated in this study. Results obtained in study revealed that majority of the rubber tappers suffering from lower back pain whereas in terms of psychosocial factors they have low social support and high job and physical demand. WRMP among rubber tappers are cannot be doubtable, however the risk can be reduced if the management of occupational safety and health risk is managed properly.

Keywords

WRMPs, NMQ, RULA, JCQ

Acknowledgement

We would like to express our gratitude to the Faculty of Industrial Sciences and Technology (FIST), University Malaysia Pahang (UMP) Malaysia for the support in this study. Not to forget, our sincerest gratitude to all respondents who took part in this research.

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

Car Users’ Knowledge & Practices on Tyre Maintenance in Malaysia

Car Users’ Knowledge & Practices on Tyre Maintenance in Malaysia
Muhamad Syukri ABDUL KHALID1, Zulhaidi MOHD JAWI1, Mohd Hafzi MD ISA1 and Muhamad Arif Fahmi ABDUL WAHAB2

1 Vehicle Safety and Biomechanics Research Centre, Malaysian Institute of Road Safety Research (MIROS), 43000 Kajang, Selangor, Malaysia;

2 Automotive Engineering Division, Road Transport Department, 62100 Putrajaya, Malaysia.

Page 84 – 94   |   Vol. 3 No. 2 (2018)   |    Available online on 1 Dec 2018

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Abstract

Despite being one of the main issues in automotive consumerism in Malaysia, the importance of tyre in terms of knowledge and maintenance among users are still in doubt. It can be seen that many related tyre faulty crashes have occurred in recent years. This study aims to identify and understand car users’ knowledge and practices on tyre maintenance in Malaysia. Data collection were done among car users in Klang Valley and 247 valid responses were analysed. The results indicate that users still lack in knowledge regarding tyre specifications and details. As for the maintenance, most of the users did practice recommendations accordingly with the tyre manufacturer. Apart from that, half of the respondents never check their spare tyre’s condition and a few suggested that they have no idea about presence of spare tyre in their car. To conclude, users are still lacking in knowledge regarding tyre maintenance in terms of its specifications and ideal practices. Thus, it is recommended that users to be more aware and practice a proper tyre maintenance while ensuring their tyres are always in good condition so that may, perhaps, reduce the possibility to involve in a tyre failure related crashes.

Keywords

Tyre maintenance, automotive consumerism, road safety

Acknowledgement

All authors ideas and concepts in materials, questionnaire, interview and analysis in ensuring
the completion of the study within timeframe. This research work was funded by the Malaysian
Institute of Road Safety Research (MIROS), an agency under the Ministry of Transport Malaysia
(MOT).

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

Correlations Between Heart Rate, Muscle Activity and Angle of Lumbar Associated with Posture Durations of Laminators in Manual Hand Layup Process

Correlations Between Heart Rate, Muscle Activity and Angle of Lumbar Associated with Posture Durations of Laminators in Manual Hand Layup Process
Nur Syafiqah RAYME1 Seri Rahayu KAMAT1, Syamimi SHAMSUDDIN1

1 Fakulti Kejuruteraan Pembuatan, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia.

Page 78 – 83   |   Vol. 3 No. 2 (2018)   |    Available online on 1 Dec 2018

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Abstract

Laminators are people who worked with layup process in the making of composite products. In hand layup process especially manual handling, the laminators were prone to be in high risk of getting musculoskeletal disorders (MSD). The ergonomic approach in manual handling was already established since 2005 however, no specific studies were done especially in this process. This paper is a continuation of the research done by the authors which focused more on the data analysis of experimental data collection. The study aims to investigate the correlation between heart rate, muscle activity, the angle of lumbar during layup and the duration of the working posture. From observations and survey done in the previous study, the laminators were exposed to awkward posture as they tended enormous size of the mould. Hence, the study collected 4 parameters data simultaneously. The analysis of the correlation was done using MINITAB software using Response Surface Method (RSM) analysis in obtaining the p-value of the model. From the data analysis, only two of the models show insignificant of correlation and 6 out of 8 models show correlations in between parameters. It is concluded that there was a correlation in between muscle activity, heart rate, the angle of lumbar and duration of posture, however, further studies should be done to cater the insignificant of the other 2 models with different muscle type of Lumbar Support Spinae and Multifidus Lumbar.

Keywords

MSD, HAND LAYUP, ERGONOMICS

Acknowledgement

This study was supported by Universiti Teknikal Malaysia Melaka (UTeM) and sponsored by industry and Ministry of Higher Education (MOHE). We would like to express our gratitude to the industry for our data collection and all respondents that were consenting the experiments.

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

Muscle Activity and Postural Analysis of a Computer Numerical Control Machining Task

Muscle Activity and Postural Analysis of a Computer Numerical Control Machining Task

Muhammad Syafiq SYED MOHAMED, Isa HALIM, Akmal Hafiz AZANI, Mohanathas NADRAJAH, Siti Khadijah KHALIL

Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka (UTeM), Hang Tuah Jaya, Duriang Tunggal, 76100 Melaka, Malaysia

Page 71 – 77   |   Vol. 8 No. 1 2023   |    Available online on 30 Jun 2023

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Abstract

Computer Numerical Control CNC machining center is equipped with advanced features to achieve high accuracy, reliability, repeatability and productivity. However, CNC machining centers still expose machinists to ergonomics risk factors such as awkward postures, repetitive movements, heavy lifting and prolonged standing especially during manual material handling. The aim of this study is to redesign the existing CNC machining center to improve work posture and reduce muscle activity of the lower back. Muscle fatigue survey, Rapid Upper Limb Assessment (RULA) analysis and surface electromyography (SEMG) were used to assess subjective muscle fatigue, posture and muscle activity respectively. All machinists reported to experience muscle fatigue on the lower back area. Based on RULA analysis, the redesigned CNC machining center has improved the working posture of machinists as shown by a lowered RULA score from 7 to 3 for both right and left body side. SEMG results showed a significant decrease in muscle activity of the lower back. Therefore, this study concluded that the redesign of CNC machining center has shown has successfully reduced muscle fatigue and improved the work posture for the machinists.

Keywords

Muscle fatigue, RULA, SEMG, CNC

Acknowledgement

The researchers would like to thank the Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka for funding this study by the University High Impact Short Term Grant (PJP/2017/FKP/H19/S01527).

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

Body Symptom Survey (BOSS) Questionnaire for Analysis of Musculoskeletal Symptoms in Industry

Body Symptom Survey (BOSS) Questionnaire for Analysis of Musculoskeletal Symptoms in Industry
C. D. M. ASYRAF1, *, M. N. A. RAHMAN2, R. M. ZEIN3, HARI KRISHNAN. T. S.4, J. MD SAH1

1 School of Manufacturing Engineering, Universiti Malaysia Perlis, Kampus Pauh Putra, 02600 Arau, Perlis, Malaysia.

2 Department of Manufacturing and Industrial Engineering, Faculty of Mechanical Engineering and Manufacturing, Universiti Tun Hussein Onn Malaysia (UTHM), 86400 Batu Pahat, Johor, Malaysia.

3 National Institute of Occupational Safety and Health, Lot 1, Jalan 15/1, Section 15, 43650 Bandar Baru Bangi, Selangor, Malaysia.

4 Faculty of Safety and Health, Cyberjaya University College of Medical Science, Cyberjaya, Selangor, Malaysia.

*Corresponding Author: asyraf@unimap.edu.my

Page 65 – 70   |   Vol. 8 No. 1 2023   |    Available online on 30 Jun 2023

Full text

Abstract

This paper presented survey questionnaire for analysis of musculoskeletal symptom called Body Symptom Survey (BOSS) Questionnaire suitable for industrial applications. The survey can be performed through self-administered or through interviews. Similar to other musculoskeletal questionnaires, the main purpose of the questionnaire is to serve as a screening tool to identify a body parts symptoms related to musculoskeletal disorders in ergonomics context. The two main focus of the questionnaires are the frequency and the severity of the symptom of complaints by the worker. Structure and instruction on usage of BOSS Questionnaire are presented. Example of case study using BOSS questionnaire among 60 workers at manufacturing industry are included in this study.

Keywords

MSQ, Body Symptom Survey

Acknowledgement

–

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.

The Human Factor of Biased Occupational Safety and Health Advice by Safety Officers in Malaysian Construction Industry

The Human Factor of Biased Occupational Safety and Health Advice by Safety Officers in Malaysian Construction Industry

Elvin Vijaya Kumar

Razak Faculty of Technology and Informatics, Universiti Teknologi Malaysia, Kuala Lumpur

Page 61 – 64   |   Vol. 3 No. 2 (2018)   |    Available online on 1 Dec 2018

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Abstract

The Malaysian construction sector recorded the highest number of work related fatalities and one of the critical reasons is lack of knowledge among the management team and workers where a safety and health officer’s (SHOs) duty is to advise the employer. The study investigates the possible causes that could affect the credibility of the SHOs advice that positively associated to the knowledge of the employers on safety and health matters. The underlying possibilities were brainstormed through cause effect analysis technique by qualified subject matter experts. The study also suggested several recommendations for review and future solution of the unhealthy human factor of biased safety and health officer’s advice in Malaysian construction industry.

Keywords

Construction Sector, SHO, Workplace Safety, Biased Advice, Cause Effect Analysis

Acknowledgement

This study was supported by Universiti Teknologi Malaysia (UTM), Kuala Lumpur. We would like to express our gratitude to Razak Faculty of Technology and Informatics, UTM Kuala Lumpur for the support in this study. Not to forget, our sincerest gratitude to all the subject matter experts who had voluntarily rendered their assistance and took part in this research.

© 2022 Human Factors and Ergonomics Society (HFEM). All rights reserved.

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.