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All Journal The Indonesian Journal of Community and Occupational Medicine Journal of Applied Science, Engineering and Technology (J. ASET)
Muyiwa, Omotunde
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology

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Analysis of Mutual Interaction Effect of Six-Individual Characteristic Factors of Safe Weight Lift Model Muyiwa, Omotunde; Akanbi, Olusegun
Journal of Applied Science, Engineering and Technology Vol. 3 No. 2 (2023): December 2023
Publisher : INSTEP Network

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47355/jaset.v3i2.53

Abstract

An ergonomic mathematical model to compute Safe Weight Lift (SWL) was formed with principle of strain energy to limit risk of low back pain amid construction employees in Nigeria. However, mutual interaction effect of the selected factors were not yet studied. Therefore, analysis of mutual interaction effect of compounded chosen male distinctive factors of biomechanical of body weight, spinal shrinkage, and spine length, with physiological of age, and gender also, psychophysical of surrounding temperature and lift frequency were done. The factors data were gotten using ZT-160 scale, tailor-tape rule, fly-back timing and RH/Temperature pen from fifty masculine manual construction workers selected using purposive sampling technique. The data were inputted into Ms Excel and SPSS for analyses using Multiple Linear Regression (MLR), Regression Curve Estimate (RCE), and ANOVA at alpha level 0.05. The MLR investigation shown that mutual interactions of the compounded factors were significant (p=0.00) and gave R2=0.94, while RCE predicted quadratic relationship with the SWL (p=0.00), and the ANOVA revealed that factors were significant (p=0.00) with F-test=404.53. The mutual interactions of the model selected factors were significant. Therefore, it can be used as a tool for decision-making for safety management of male labourers involve in manual load handling.
Assessing Ergonomic Risks of Work-related Musculoskeletal Disorders in Soap Making Industries in Nigeria MUYIWA, Omotunde; Adeigbe, Fatai; Kolawole, Adekunle
The Indonesian Journal of Community and Occupational Medicine Vol. 4 No. 3 (2025): ijcom
Publisher : ILUNI MKK FKUI and PRODI MKK FKUI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53773/ijcom.v4i3.152.80-5

Abstract

Introduction: Workers in manufacturing industry are frequently exposed to occupational dangers associated with work-related musculoskeletal disorders. However, few studies were available on work-related musculoskeletal disorders amidst workers in Nigeria’s soap making industry. Objective: To assesses ergonomic risk associated with work-related musculoskeletal disorders (WMSDs) in soap production. Method: Twenty purposively selected soap baking workers from four industries; work postures were assessed. Semi-structured oral questionnaires were used to appraise body areas where participants experienced the WMSDs. Workplace inspections were done by observing soap baking workers engaged in their various tasks. The semi-structured oral questionnaires and observation data collected were analysed using descriptive statistics and the Ovako Working Posture Analysis System. Result: The descriptive statistics revealed that the participants experienced pain/discomfort arising from their work, with the body parts most commonly affected been the lower back, wrists-hands, shoulders, and upper back (100%), respectively, elbows, and ankles/feet (75%), respectively, and neck (50%). Participants identified ergonomic risk were frequent twisting and bending during dragging of soap cake into the conveyor from cylinder cooler hopper as the prominent cause of the ache. Conclusion: The workplace should be ergonomically redesign to reduce frequent bending and twisting during soap baking that require inclined conveyor and handling techniques, to eliminate the identified risk factors causing WMSD among the soap baking workers.
Co-Authors Adeigbe, Fatai Akanbi, Olusegun Kolawole, Adekunle