Abstract
Whole-body vibration exposure has been found to negatively influence health, comfort and performance. There is little knowledge on the biomechanical response during vibration exposure combined with additional occupational hazards such as bent or twisted postures. In addition, little information is available on the effective use of armrests during exposure. This paper reports a study to investigate the influence of sitting in different working postures on the seat-to-head transmissibility and head motion of subjects exposed to seated multi-axis whole-body vibration. Findings were in agreement with previous research that only used one direction of vibration exposure. The most concerning finding is the increased vibration transmission to the vertical and roll axes at the head during the twisted posture.
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