This paper aims to investigate the effects of job demand on work productivity and perceived discomfort level at different intensity levels of job demand. Twenty subjects involved in this study comprised of 10 males, and 10 females. All subjects performed an experimental at two different intensity levels of job demand. The data of work productivity and perceived discomfort level were recorded during the task. The results showed that the higher the intensity level of job demand, the higher the work productivity and perceived discomfort level. It can be concluded that working at higher job demand results in higher worker productivity, but proper planning on task design should be implemented to avoid the unwanted risk that will lead to the risk of WMSDs.
This paper aims to identify the risk of work-related musculoskeletal disorders (WMSDs) among nurses or patient handlers and to develop the assisted equipment in order to reduce the risk. The survey questionnaires have been distributed to the nurses in two medical centers in Klang Valley. The results indicated that they are exposed to the risk of WMSDs and one of the tasks contributed to the risk is changing bedridden patient diapers. Based on the interview conducted, there is no equipment available that could be used to assist in diapers changing process, and all the participants agreed on the idea to develop the Bedridden Assisting Support Equipment (BASE). The BASE has been designed and developed with the combination of the mechanical element, counterbalance systems, and ergonomic tools. The BASE is successfully performed its intended function in reducing the physical effort of nurses or patient handlers to change patient’s diapers which indirectly could reduce the risk of WMSDs. In addition, the BASE proved its effectiveness as only one person required when changing the diapers using BASE
This paper aims toinvestigatethe risk of physical fatigue at different levels of posture and repetition during manual handling task. Ten subjects with nohistoryof musculoskeletal disorders performed manual handling tasks at three levels of posture and two levels of repetition. The task completion time is recorded during the experimental task and the subjects rated their perceived discomfort level after the task completion. The results indicated that the lower posture of hand at higher repetition resulted in higher perceived discomfort level that leads to higher risk of physical fatigue. The higher repetition requires higher rest time for recovery and required lengthy completion time. The findings of this study served as a reference to the manufacturing industry in manual handling task design and planning to mitigate issues related to work-related physical fatigue at different levels of posture and repetition that could lead to the risk of work-related musculoskeletal disorders (WMSDs)
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