Design
The front of the sole features a rigid or semi-rigid spike plate containing between 3 and 9 threaded holes called spike wells. Spikes can be screwed into each well using a spike wrench. With the exception of high jump and javelin shoes, track shoes generally have no spike wells along the mid-foot or heel. Some shoes have permanent or "fixed" spikes which are not meant to be removed.
Track shoes are exceptionally light, some shoes weighing less than five ounces (142 grams) each, half the weight of many standard running shoes. However, as this is achieved through reducing the amount of material used in the soles and sidewalls, spikes offer less cushioning and support than a standard running shoe. Thus, constant use in training may result in the shoes not lasting as long.
In most track shoes, the toe region bends up to allow space for protruding spikes and to encourage athletes to run on their toes. This upward angle, known as "taper," varies widely depending on the intended use of the shoe, and the taper angle can be rigid or flexible. Shoes with a large taper are said to be "aggressive."
Read more about this topic: Track Spikes
Famous quotes containing the word design:
“I always consider the settlement of America with reverence and wonder, as the opening of a grand scene and design in providence, for the illumination of the ignorant and the emancipation of the slavish part of mankind all over the earth.”
—John Adams (1735–1826)
“Nowadays the host does not admit you to his hearth, but has got the mason to build one for yourself somewhere in his alley, and hospitality is the art of keeping you at the greatest distance. There is as much secrecy about the cooking as if he had a design to poison you.”
—Henry David Thoreau (1817–1862)
“What but design of darkness to appall?—
If design govern in a thing so small.”
—Robert Frost (1874–1963)