Samenvatting
Injuries may be classified in various ways. The origin of over-loading from the mechanical point of view must be considered if the prevention of injury is to be attempted. There are 4 main causes of injury: the most common and dangerous resulting from shock loads in the brain, specifically in the cases of moped, and motorcycle riders. The principal object of the investigation was comparison of the shock-absorbing qualities of present day helmets to those of natural materials e.g. the coco-nut rind.