Biodynamic Response of the Seated Human Body to Single-axis and Dual-axis Vibration: Effect of Backrest and Non-linearity.

The article offers information on a study that examines biodynamic responses by the human body to single-axis and dual-axis vibration. It informs that seat backrest affects the posture of the body by affecting sitting posture directly including the curvature of the spine which results in back pain. The study concludes that influence of backrest should be considered when determining frequency weightings for human responses to vibration.