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Document ID (ISN)110972
CIS number 10-0506
ISSN - Serial title 0340-0131 - International Archives of Occupational and Environmental Health
Year 2010
Convention or series no.
Author(s) Bovenzi M.
Title A longitudinal study of vibration white finger, cold response of digital arteries, and measures of daily vibration exposure
Bibliographic information Mar. 2010, Vol.83, No.3, p.259-272. Illus. 41 ref.
Abstract The objective of this study was to investigate the relationship between vibration-induced vascular disorders and measures of daily exposure to hand-transmitted vibration (HTV). Two hundred and forty-nine male workers exposed to HTV and 138 unexposed controls from the same enterprises participated in a 3-year follow-up study. The diagnosis of vibration induced white finger (VWF) in the HTV workers and that of Raynaud's phenomenon in the controls was based on the medical history, the administration of colour charts and the results of a cold test with measurement of finger systolic blood pressures. Vibration magnitudes from the tools were measured as r.m.s acceleration, frequency weighted according to international standard ISO 5349-1, and also unweighted over the frequency range 6.3-1,250Hz. Daily vibration exposure was expressed in terms of daily exposure duration and frequency-weighted or unweighted r.m.s. acceleration normalized to a reference period of 8h. Findings suggest that a measure of daily vibration exposure calculated from unweighted r.m.s. acceleration over the frequency range 6.3-1,250Hz performs better for the prediction of vascular disorders in users of vibratory tools than a measure derived from r.m.s. acceleration frequency weighted according to ISO 5349-1. This study provides epidemiological evidence that more weight should be given to intermediate and high-frequency vibration for evaluating the severity of hand-transmitted vibration.
Descriptors (primary) hand-arm vibration; Raynaud's phenomenon; vibration measurement; exposure evaluation
Descriptors (secondary) vascular diseases; cold pressor test; long-term study; case-control study; male workers; dose-response relationship
Document type D - Periodical articles
Subject(s) Noise, hearing and vibration
Broad subject area(s) Occupational medicine, epidemiology
Browse category(ies) Vibration