A Literature Review on Risk Factors of Musculoskeletal Symptoms among Woodworker in Woodworking Station Introduction The wood industry is inherently hazardous, with workers frequently exposed to perils such as injuries, noise, and ergonomic strain. Therefore, ensuring workers' safety and health in such environments is critical. The objective of this review paper is to investigate the main factors affecting symptoms of MSDs among woodworkers in their workstations. Methods A literature search was conducted using work-related terms, such as musculoskeletal disorders (WMSDs), woodworkers, and carpenters. All studies on risk factors associated with WMSDs, published between 2014 and 2024, were included. Accordingly, databases searched were Google Scholar, Science Direct and PUBMED. Results 501 articles that assessed postural problems in woodworking activities were found, and only 12 articles regarding WMSDs among woodworkers were selected for further analysis. India had the highest number of articles among countries, followed by Pakistan. According to the results, 19% of lower back and shoulder pain cases were associated with MSDs symptoms. Conclusions Woodworkers face an increased risk of MSDs, particularly in the lower back, shoulders and neck, due to poor workstation setup, awkward postures, manual handling, exposure to vibration, and other physical factors in the workplace. The findings of this review inform the design of evidence-based ergonomic interventions, such as modifications to workstations, redesigned ergonomics tools, or unsafe work practices identified among woodworkers in workstations.

Abstract Introduction: Malaysian traffic police are always working on the public roads to alleviate traffic congestion and therefore exposed them to the polluted air every day. In particular, polluted air containing PM2.5 is dangerous to their respiratory health as they can penetrate deep into the lungs, leading to bronchitis, lung cancer and many more. Hence, this research examined the relationship of personal exposure level to PM2.5 with respiratory symptoms among traffic policemen in Kuala Lumpur and Johor Bahru. Methods: 134 participants among traffic policemen were agreed to participate in this study. They were requested to complete a questionnaire regarding the sociodemographic background and respiratory health information. The questionnaire was adopted from International Union Against Tuberculosis Lung Diseases (1986). Personal exposure level of PM2.5 was measured using an air pump with 5.0µm pore size PVC filter. Results: The mean exposure level of PM2.5 among traffic policemen was 28.69 µg/m3. It was found that some of them possess respiratory symptoms (Coughing 33.6%, Phlegm 25.4%, Wheezing 14.9% and Shortness of breath 32.1%). There was significant association detected at p-value < 0.05 in coughing. Despite, there was no significant association in other symptoms such as phlegm, wheezing and shortness of breath. Conclusions: Traffic police were exposed to a relatively high level of PM2.5 (12.4 µg/m3 to 55.3 µg/m3) and showed symptoms of respiratory effects. Therefore, recognition of the risks connected with occupational lung disease and exposure monitoring must be a high priority. This baseline data can serve as a reference to the top management of traffic police officers in order to develop an occupational safety and health guideline for police officers as required by Occupational Safety and Health Act (OSHA, Act 514 1994).

Abstract Discomfort measurement has usually been attempted by asking the participants to rate the scale of their discomfort which commonly termed as a subjective scale. Various studies had conducted the discomfort level on vehicle seat by using Visual Analogue Scale (VAS) and Likert scale. VAS is a tool that use to measure a discomfort or characteristics in range across a continuum of values. Meanwhile, Likert-scale is a tool consist of items that require respondents to rate their degrees of comfort or discomfort with various declarative statements. Thus, the purpose of this study is to review, discuss and compare between the VAS and Likert scale used on the development and assessment of sitting discomfort survey in seat vehicles. The literature on various topics related to questionnaire development on discomfort in seat vehicle were collected from electronic databases. Four high-quality studies were eligible and met the inclusion and exclusion criteria. Overall, there is no evidence and conclusion that neither visual analogue scale nor Likert scale are better to one another. Therefore, it can be concluded that either of this scale still applicable for the ergonomic research application as both of this scale have their own pros and cons.