Fig. 18.1
The Foster’s Running Pumps depicted are from 1924. Photo from http://retrobok.com/2012/03/27/first-reebok-shoes/
Track spikes for running events are typically composed of a thin layer of midsole protection which becomes thicker as the event becomes longer. In a distance spike (Fig. 18.2) the distal 1/3 of the shoe is composed of the spike plate, often composed of a plastic or other lightweight composite material with removable elements. Most track facilities require the elements be ¼″ or less. Occasionally these elements could be in an area of a boney prominence such as under a metatarsal head or the sesamoids and that particular spike element may need to be removed. Any examination of an athlete should include ALL of the shoes that are used including racing, training, and casual.
Fig. 18.2
(a, b) Distance spike
Whereas a sprint spike (Fig. 18.3) will often have a full length spike plate to provide a greater lever arm since midshole cushioning is not necessary because foot strike will be in the forefoot. Notice that the sprint spike is curved at the end similar to a rocker bottom shoe to assist propulsion as well.
Fig. 18.3
(a, b) Sprint spike , note the plastic type foot plate extends over the entire device