Relationships of neurosensory disorders and reduced work ability to alternative frequency weightings of hand-transmitted vibration
| Autor: | Marcella Mauro, Massimo Bovenzi, Andrea Prodi |
|---|---|
| Přispěvatelé: | Bovenzi, Massimo, Prodi, Andrea, Mauro, Marcella |
| Rok vydání: | 2015 |
| Předmět: |
vibration exposure
Employment medicine.medical_specialty Cross-sectional study finger numbne hand-transmitted vibration alternative frequency weighting sensorineural symptom quantitative sensory testing Sensory system Audiology finger numbness Vibration Cohort Studies work ability exposure–response relationship Hand transmitted vibration Risk Factors Occupational Exposure medicine cohort study Humans frequency weighting function business.industry Quantitative sensory testing Public Health Environmental and Occupational Health Follow up studies Hand Cross-Sectional Studies Case-Control Studies Sensation Disorders neurosensory disorder Work ability Ergonomics Vibration exposure Public aspects of medicine RA1-1270 Nervous System Diseases business Cohort study |
| Zdroj: | Scandinavian Journal of Work, Environment & Health, Vol 41, Iss 3, Pp 247-258 (2015) |
| ISSN: | 1795-990X |
| Popis: | OBJECTIVE: This cohort study aims to compare the performance of alternative frequency weightings of hand-transmitted vibration (HTV) for the assessment of the exposure–response relationships for neurosensory disorders and reduced work ability among HTV-exposed workers. METHODS: In a 3-year follow up study, the occurrence of neurosensory symptoms and reduced work ability, and the response to quantitative sensory testing (grip force, manipulative dexterity, touch sensation) were investigated in 249 HTV-exposed workers and 138 healthy controls. Among the HTV-exposed workers, the sensory outcomes were related to measures of daily vibration exposure expressed in terms of 8-hour energy-equivalent frequency-weighted acceleration magnitude [A(8)]. To calculate A(8), the acceleration magnitudes of vibration were weighted by means of four alternative frequency weightings of HTV. RESULTS: The occurrence of neurosensory symptoms, reduced work ability, and abnormalities of sensory tests was greater among the HTV-exposed workers than the controls. Among the HTV-exposed workers, the deterioration of neurosensory outcomes and the reduction of work ability increased on par with the measures of vibration exposure. Exposure–response models revealed that the four alternative frequency weightings of HTV provided the same predictions for the probability of finger numbness among the exposed workers (observed 36% versus predicted 32%). CONCLUSIONS: The findings of this study revealed significant dose–response relationships between measures of vibration exposure, sensory disorders, and reduced work ability among the HTV-exposed workers. There were no differences in the prediction of finger numbness between measures of vibration exposure calculated with alternative frequency weightings of HTV. |
| Databáze: | OpenAIRE |
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