Wolfel Beratende Ingenieure GmbH & Co. KG

Max, Germany

Wolfel Beratende Ingenieure GmbH & Co. KG

Max, Germany
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Bovenzi M.,University of Trieste | Schust M.,Federal Institute for Occupational Safety and Health | Menzel G.,Federal Institute for Occupational Safety and Health | Hofmann J.,Wolfel Beratende Ingenieure GmbH & Co. KG | Hinz B.,Federal Institute for Occupational Safety and Health
Ergonomics | Year: 2015

In a prospective cohort study of 537 male professional drivers, the occurrence of sciatic pain showed stronger associations with measures of internal lumbar load expressed in terms of daily compressive dose, Sed (MPa), and risk factor, R (non-dimensional), according to ISO/WD 2631-5 (2013), than with measures of daily vibration exposure calculated as either 8-h energy-equivalent frequency-weighted acceleration (ms− 2 r.m.s.) or vibration dose value (ms− 1.75) according to the EU Directive on mechanical vibration (2002). Herniated lumbar disc, previous lumbar trauma and physical work load were also powerful predictors of the occurrence of sciatic pain over time. Psychosocial work environment was poorly associated with sciatic pain. The boundary values of risk factor (R) for low and high probabilities of adverse health effects on the lumbar spine, as proposed by international standard ISO/WD 2631-5 (2013), tend to underestimate the health risk in professional drivers. © 2015, © 2014 Taylor & Francis.


Schust M.,Federal Institute for Occupational Safety and Health | Menzel G.,Federal Institute for Occupational Safety and Health | Hofmann J.,Wolfel Beratende Ingenieure GmbH & Co. KG | Forta N.G.,Federal Institute for Occupational Safety and Health | And 3 more authors.
Ergonomics | Year: 2015

The present study aimed to (1) employ the method for evaluation of vibration containing multiple shocks according to ISO/CD 2631–5:2014 (Model 1) and DIN SPEC 45697:2012 in a cohort of 537 professional drivers, (2) deliver the results for a re-analysis of epidemiological data obtained in the VIBRISKS study, (3) clarify the extent to which vibration acceleration and individual variables influence risk values, such as the daily compressive dose Sed and the risk factor R, and (4) compare the results with in vivo measurements and those obtained in previous studies with similar models. The risk factor R was influenced by the acceleration, lifetime exposure duration, sitting posture, age at the start of exposure and body mass/body mass index in order of decreasing effect. Age and annual and daily exposure duration had only a marginal effect. The daily compressive dose Sed and the risk factor R showed weak linear association with the daily vibration exposure A(8) and the vibration dose value VDV. The study revealed high shear forces in the lumbar spine. © 2015, © 2014 Taylor & Francis.

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