How is whole body vibration measured?

Whole body vibration is measured with accelerometers on the seat or floor where the worker sits or stands. The device records vibration levels in three directions: up-down, side-to-side, and front-to-back. WBV affects the body differently based on direction. 

Measurements are typically taken during normal working conditions to reflect real-world exposure. The data is then averaged over the workday to compare with legal action and limit values. 

This isn’t a one-time task. Vibration levels can change over time as machinery wears down or work practices shift. Therefore, taking repeat measurements is important.