Volume 10, Issue 2 (Occupational Medicine Quarterly Journal 2018)                   tkj 2018, 10(2): 32-41 | Back to browse issues page

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Health risk of whole-body vibration exposure among fork-lift truck drivers at two position with and without load: A case study in an automobile company. tkj 2018; 10 (2) :32-41
URL: http://tkj.ssu.ac.ir/article-1-898-en.html
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Health risk of whole-body vibration exposure among fork-lift truck drivers at two positions with and without load: A case study in an automobile company
Khatabakhsh A(MSc)1*, FarhangDehghan S(PhD)2, Alizadeh Z(MSc)3
1,2,3Department of Occupational Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Introduction: Fork-lift trucks are considered as one of the main sources of vibration at workplaces. Due to the importance of the risks from exposure to vibration, the present study was aimed to investigate the health risk due to exposure of fork-lift drivers to whole body vibration at two positions with load and without load in an Automobile industry.
Method: In this cross sectional study, the evaluation of the whole body vibration exposure according to standard ISO 2631-1: 1997 was done for 33 drivers of fork-lift truck. All measurements were performed using 3-axis accelerometer in sitting position of operators on the move fork-lift for 20 minutes. Then, the effect of load on vibration exposure and health risk was determined by SPSS software (Version16.0) and the paired-samples t-test.
Results: The frequency-weighted r.m.s acceleration values for x, y, and z direction (m/s2) in the “without load” condition were 0.0038, 0.63 and 0.93 m/s2, respectively, and in the “with load” was equal to 0.0027, 0.51, and 0.98 m/s2. The dominant direction of the r.m.s acceleration in both states was the z-axis. There was no statistically significant difference between the acceleration of the dominant axis and the 8-hour equivalent values in both with and without load (P>0.05).
ConclusionThe evaluation of the dominant axis and 8-hour equivalent acceleration showed that in both states, the exposure values were higher than the daily exposure limit value. Moving forklift with load reduced the vibration exposure values in two x, y direction, but did not effect on the z axis and the resulting health risk.
KeywordsHealth risk, Whole-Body Vibration, Forklift with load and without load, R.m.s acceleration
This paper should be cited as:
Khatabakhsh A, FarhangDehghan S, Alizadeh Z. Health risk of whole-body vibration exposure among fork-lift truck drivers at two positions with and without load: A case study in an automobile company. Occupational Medicine Quarterly Journal 2018; 10(2):31-40.


* Corresponding Author:
Tel: +989376645485
Email: Khatabakhsh2012@gmail.com
Received:2017.10.17                              Accepted:2018.07.28
Type of Study: Research | Subject: Physical agents
Received: 2017/10/17 | Published: 2018/11/15

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