Musculoskeletal Disorders and Workplace Analysis of Assembly Section in a Submersible Pump Industry: An EMG-Based Approa
In manufacturing industries, poor working posture is a common issue that may lead to work-related Musculoskeletal Disorder (WMSD) and physiological stress among workers. Poor working postures are considered as the major contributor that affects the worker
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Musculoskeletal Disorders and Workplace Analysis of Assembly Section in a Submersible Pump Industry: An EMG-Based Approach P. Ashok, G. Madhan Mohan and K. Nitish
Abstract In manufacturing industries, poor working posture is a common issue that may lead to work-related Musculoskeletal Disorder (WMSD) and physiological stress among workers. Poor working postures are considered as the major contributor that affects the worker efficiency and productivity. The purpose of the study is to enumerate the causes that contribute to musculoskeletal disorder among the workers. Thirty-nine male workers with in an age group of 20–24 years participated in the study. Responses as obtained through administration of Musculoskeletal Questionnaire, are analyzed by Rapid Upper Limb Analysis (RULA) method, Heart Rate (HR) monitoring and Surface Electromyography (sEMG). The heart rate was continuously monitored by using heart rate sensor for 4 h and concurrently the muscle activity has been monitored by sEMG. The results from the Nordic questionnaire and sEMG are similar. It is observed that more than 58 percent of the workers affected by MSD and physiological stresses due to awkward working postures and poor workplace design. From this study, it can be concluded that the efficiency and productivity of workers can be improved by modifying working postures and workplace.
Keywords RULA Heart rate monitor stress Working postures
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Electromyography
Physiological
Introduction
Musculoskeletal Disorder (MSD) is the major work-related problem in any industry particular in manual material and assembly industries (Pinto et al. 2013). Physiological stresses are very much related to oxygen consumption, increased heart rate and workplace design (Whitfield et al. 2014). The effect of grip force and P. Ashok (&) G. Madhan Mohan K. Nitish Department of Production Engineering, PSG College of Technology, Coimbatore, Tamil Nadu, India e-mail: [email protected]; [email protected] © Springer Nature Singapore Pte Ltd. 2018 P.K. Ray and J. Maiti (eds.), Ergonomic Design of Products and Worksystems—21st Century Perspectives of Asia, Managing the Asian Century, https://doi.org/10.1007/978-981-10-5457-0_11
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working postures are responsible for work-related problems in many cases (Finneran and O’Sullivan 2013). The effect of pulling and lifting tasks will also increase the level of MSD (Basahel 2015). For prolonged standing or in a particular posture for a long time causes pain and thus the efficiency of the worker gets reduced (Bjoringa and Hagga 2000). For an assembly section, it is important that the things needed for the assembly should be placed nearby to the worker for complete the task with less effort (Sullivan and Gallwey 2002). When the work load of the worker increases, the cardiovascular system responds and the heart rate as well as blood pressure will increase as a result the worker gets tired faster (Fredericksa et al. 2005). Workers having neck or shoulder complaint will affect more during diffi
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