Neuromotor Transmissibility of Horizontal Seatpan Vibration and a Mathematical Model

Abstract

IntroductionRecent studies of whole body vibration in seated postures have suggested that the neuromotor system may play a role in the etiology of low back disorders [1][2][3][4] . A number of researchers have modeled whole body vibration transmission to the low back, spine and head 5 . However, no model to our knowledge has examined the transmission of mechanical vibration to muscle shortening/lengthening, the neuromotor system and reflex muscle activation. In addition, only a few studies have examined biodynamic vibration transmission in the fore-aft (anterior-posterior) direction. In this work, transmission of fore-aft vibration to the spine rotation and erector spinae muscle activation was assessed and a model of the motion was created.