OHCOW - Whole Body Vibration

Human response to whole body vibration depends on the frequency of vibration, acceleration (or magnitude) of the vibration, and how long a person is exposed to the vibration. Because of the difficulty of evaluating the response to vibration and inconsistencies in quantitative data obtained from research, the International Standards Organization (ISO) 2631/1, Evaluation of human exposure to whole body vibration, has been established. When using these criteria and limits, it is important to bear in mind the restrictions placed upon their application. Some research indicates that the standards are not low enough and that musculoskeletal disorders are caused from exposure to vibration levels below the standard.

The link address is: http://www.ohcow.on.ca/resources/handbooks/whole_body_vibration/pg3.htm