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Qingsong Chen|Analysis of the Hand-arm Vibration Characteristics and Health Effects in Workers Grinding Handheld Metal Workplace in Subtropical Areas

Date:2017-07-25Author:
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陈青松W.jpg



  

Qingsong Chen

Ph.D

Member of National Occupational Health Standards Specialized Committee

Vice Chairman of Youth Committee

National Occupational Disease Specialized Committee


Professor Chen is the director of Institute of Physical Factors Monitoring, Guangdong Province Hospital for Occupational Disease Prevention and Treatment, and the master supervisor of Sun Yat-Sen University, Southern Medical University and Guangdong Pharmaceutical University. He has long engaged in the identification, measurement and assessment of physical occupational hazards in the workplace. He created some new comparison methods between measurement and laboratory assessment of physical hazards. He has successively presided over or participated in the completion of the drafting and revision on more than 10 national occupational health standards, such as Diagnosis of Occupational Hand-arm Vibration Disease, and undertaken a number of research projects, such as the National Natural Science Foundation of China, the Guangdong province science and technology project and so on. He has published more than 70 papers, obtained 1 patent, published 2 monographs as chief editor, 1 monograph as vice chief editor and 3 monographs as participant, and won the prizes for many times. 

He got the fund from the Guangdong province government in 2016 and began to build the Research and Laboratory Center of Physical Factors and Occupational Health, which can support the international cooperative research in prevention and control of noise, vibration and non-radiation hazards in the workplace.


Topic of Lecture: Analysis of the Hand-arm Vibration Characteristics and Health Effects in Workers Grinding Handheld Metal Workplace in Subtropical Areas


Abstract: Aim to investigate the hazard of hand-transmitted vibration and the characteristics of health effects in workers grinding handheld metal workpiece in subtropical areas. Methods: In total, 1267 workers from a golf equipment factories were included in this study. 803 polishing workers exposed to hand arm vibration were selected as exposure group and other 464 workers without exposure to hand arm vibration were selected as control. The acceleration of hand-transmitted vibration was detected by a human vibration detection analyzer (SVANTEK106, Poland). A questionnaire was conducted regarding general demographic data, habits and customs, occupational history, health status, etc. The Chi square test was used to analyze the distribution of symptoms of self-report between exposure group and control group. Factors associated with the occurrence of symptoms of self-report were screened through building a logistic regression equation with stepwise backward method. Results: The median of 8 h energy-equivalent frequency-weighted acceleration was 5.54 m/s2 in the grinding workers. The mean time of vibration-exposure was 98.5±60.0 months and 38.6% of the workers’ vibration-exposure length were over 10 years. As a result, 15.4% of polishing workers reported varying degrees of white finger symptoms and no workers in control group reported white finger( X2=79.43, P<0.01). 30.8% of polishing workers reported disturbance of sensation which was higher than that in control group, 8.8% workers reported(X2=80.5,P<0.01). The reported rates of finger numbness, finger tingling and hand cold were 27.5%, 4.5%, 5.9% in the exposure group respectively, which were higher significantly than 6.3%( X2=84.02, P<0.01), 0.2%( X2=18.89, P<0.01), 2.6%( X2=7.07, P<0.01) respectively in the control group. When age, time of vibration-exposure, and smoking and drinking habit were put into the logistic regression equation, the time of vibration-exposure was the most important factor the occurrence of white finger and disturbance of sensation.