Abstract
The majority of manufacturing, industrial labors normally has to perform the operating task in standing position for a long period of time. In this context, the problems related to prolonged standing activity among workers posed significant impact to the workers that may lead to musculoskeletal disorders (MSD) including pain, increased fatigue and stiffness in active muscles. The data on the problems encountered and design specifications were obtained through questionnaire survey among 60 respondents of production workers in the stamping industry. Based on the findings, large number of participants have experienced muscle fatigue in calf parts due to the prolonged standing activity. The objective of this study is to design the Manual Calf Massager (MCM) in order to reduce muscle fatigue associated with prolonged standing worker in industry. The most favored criteria of the design requirements are effortless and user friendly, high efficiency, portable devices, foldable design, multi-purpose use, adjustable device and durability based on the consumer desire. The selection of concept design was finalized by using the Pugh Selection Method; Screening and Scoring method. The final 3D modeling, design of the Manual Calf Massager (MCM) was drawn using Solid Work software. The validation analysis using subjective method was applied to gain the psychological feedback from the workers and also to the medical practitioners. According to the validation results, it can be summarized that majority of the workers were satisfied with the overall performance of MCM design. Positive feedback gained from the physiotherapist where they believed that MCM chair will become as an archetype in preventing pain become worsening especially contributable to MSD. Besides, most of them showing curiosity to try this new calf message design.
