Abstract
Vibration exposure has been linked to chronic neck and lower back pain [1,2]. For example, American male workers operating vibrating vehicles, such as industrial trucks and tractors, have been reported to have a higher prevalence of low back pain than workers whose occupations do not involve vibration exposures [1]. Also, military helicopter aviators report increased pain during deployment compared to pre-deployment, with between 22–37% reporting neck and 39–70% reporting low back pain [2]. It has been suggested that the cyclic muscle response to whole body vibration (WBV) can lead to muscle fatigue, further contributing to the development of low back pain [3]. Although several studies have measured the transmissibility response of the human spine [4,5], studies defining the mechanical effects of whole body vibration in a seated human are limited [4,5] and none have investigated the relationship between the biomechanical and muscle activity responses during such whole body vibration exposures.
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