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Dose–Response Relationship Between Exposure to Hand-arm Vibration and Health Effects among

By Riitta Sauni and Pauliina Virtema


Objectives: The aim of this study was to explore the relationship of exposure to hand-arm vi-bration (HAV) and vascular, sensorineural and musculoskeletal symptoms and symptoms of carpal tunnel syndrome (CTS) in a population of Finnish metalworkers. Methods: A questionnaire on HAV exposure and symptoms was sent to 530 metalworkers. Those who reported finger blanching, numbness or tingling of the fingers or symptoms of CTS were invited to further examinations (n 5 133). Their cumulative lifelong exposure to HAV, the level of current exposure and the history of use of tools causing impulse vibration were evaluated. The association of different symptoms with the HAV exposure was assessed with lo-gistic regression analyses adjusted for age and smoking. The vibration perception thresholds (VPTs) were tested according to ISO 13091-1:2001. Results: The cumulative exposure index varied between 0 and 115 000 m2 years d s24, the mean being 20 591 m2 years d s24. The average of current daily vibration exposure was 1.6 m s22 and 39 % of the participants had a history of exposure to impulse vibration. Of the respond-ents, 49 % reported white fingers, 66 % neurosensory symptoms, 56 % symptoms of CTS and 75% musculoskeletal symptoms. The cumulative exposure index was associated with symptoms o

Year: 2008
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