Association Between Adopted Posture and Perceived Vibrational Discomfort Among Stone Polishing Workers

  • Susmita Nath
  • Tapashi Kalita
  • M. Arunachalam
  • Rajiv Tiwari
  • Sougata KarmakarEmail author
Conference paper
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 135)


This study examined the work-related discomfort among the workers engaged in stone polishing activities, from Guwahati, India. Data was collected through questionnaire-based interview and direct observation of the stone polishing process. The working postures of the stone polishing workers were evaluated through direct observation of the workers at their workstation using the Rapid Entire Body Assessment (REBA) method. The vibration level was measured using hand-arm vibration meter, VM31 in each of the direction (X, Y, and Z), and measurement techniques were followed as described in European Occupational Health Directive 2002/44/EC and ISO 5349-1. A high proportion of workers had a neck (48.9%), shoulder (51.1%), wrist (84.4%), elbow (83%), feet (53.3%), and knee (31.1%). The final grand score was 9 (floor), 7 (wall), and 10 (staircase). It indicates that the overall postural load was of very high risk, and changes and implantation were required very soon. The measured eight-hour energy-equivalent frequency-weighted acceleration magnitude [A(8)] for each of the participant vibration value was also beyond the exposure action value (2.5 m/s2) and exposure limit (5 m/s2).) There was significant association between the perceived discomfort of individual body parts and measured resultant of vibration at the wrist of the different location. There was also a significant correlation between discomfort of overall body parts of the stone polishing workers and measured resultant of vibration at the handle of different location (floor, wall-base, and staircase). Therefore, this study tried to examine whether there is an association between working posture and the overall discomfort of the polishing workers while pursuing different types of polishing activities.


Awkward posture Hand-arm vibration Stone polishing activities 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Susmita Nath
    • 1
  • Tapashi Kalita
    • 1
  • M. Arunachalam
    • 1
  • Rajiv Tiwari
    • 1
  • Sougata Karmakar
    • 1
    Email author
  1. 1.Indian Institute of Technology GuwahatiGuwahatiIndia

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