Biodynamic response to random whole body vibration in standing posture

Abstract

The bio-dynamic responses of the human body to whole body vibration have been studied in various studies to find out the causes of health and comfort deterioration of the human body. The transmissibility of whole body vibration (WBV) from the floor to the head and knee for standing posture has been studied in the present work. The six healthy male subjects were exposed to random whole-body vibration having 0.5m/s and 1m/s r.m.s vibration magnitude and frequency ranges from 1-20 Hz. Also the effect of two hand support (handle and handrail) on floor to head transmissibility as well as on floor to knee transmissibility was studied. The first peak has been observed in the 4 to 7 Hz frequency range for floor to head transmissibility in both the postures. The transmissibility of the floor to the head was found to be greater for holding the handrail than handle while little effect on floor to knee transmissibility.