Modelling the response of the human body to occupational whole-body vibration provides the possibility of predicting the forces acting on the disc and/or endplates of lumbar vertebrae.
The result has always been short-to-medium term creative destruction, sometimes including the destruction of whole occupational categories – followed by longer term job growth enabled by the new technologies or the increased wealth they create.
In contrast, trainings for response professionals might only discuss household preparedness as a minor component of a program largely focused on occupational responsibilities for whole community preparedness and response.
Cases are assigned to specific economic sectors (38 categories) considering the whole occupational history.
For example, for occupational exposures, the whole occupational history is usually investigated for each subject, and different methods exist to estimate the average dose of exposure at each past job [ 1- 3].
Second, they note that their study would have been less prone to the healthy worker effect because it included the whole occupational history of study subjects.
In the current study, LLD was associated with low back symptoms after adjustments for confounding factors in the whole occupational sample.
The group of respondents in the current study was representative of the whole occupational group in Denmark regarding participation by gender and by instrument group, two variables known for all members of the occupational group.
In a longitudinal study, the dose response relationships between long term occupational exposure to whole-body vibration and degenerative processes in the lumbar spine caused by the lumbar disks were examined.
Occupational long-term whole-body vibration (WBV) has been recognized as a major risk factor for low back disorders, one of the most important reasons for medical impairment and early permanent disability among mass transit operators.
Several recently published critical reviews conclude that there is strong epidemiological evidence for a relationship between occupational exposure to whole-body vibration (WBV), low back pain (LBP) and back disorders.
