Evolution of sports shoes

 We are once again in the midst of the Olympic Games fever. Our best athletes compete at the highest level and strive for top honors in their chosen fields.

Most older people will remember the rubber-soled canvas shoes that were traditionally used in physical education lessons in most schools in Europe. These were available in whatever color you liked as long as it was white or black.

These have been replaced by air cushion gel filled capsules with superior technical performance. They come in a variety of colors, shapes, and forms and are bought for both looks and performance.

The pioneering รีวิวรองเท้ากีฬา technique that enabled the development of the plimsoll was called vulcanization, which is still used today. This process uses heat to melt rubber and fabric. Sulfur is used during the process.

Canvas shoes were revolutionary at the time, providing comfort, being lightweight, and allowing the user to move silently. Canvas shoes became known as sneakers and were sold on a large scale in the United States as early as 1917.

In the four years since the last Olympics in Athens, technology has advanced a bit and has definitely advanced from the days of the reductions.

Shoes and clothing have evolved to be lighter and stronger. But what role has technology had to play in improving the performance [http://nike-trainers.com/index.php?option=com_content&task=view&id=21&Itemid=2] of our Olympians?

Sneakers and athletic shoes have evolved, we have different shoes for each event and each pair of shoes is made from a variety of numerical materials chosen for their individual properties to put strength and flexibility where it is needed most. Materials such as Kevlar, which is ten times stronger than leather, leather or canvas, which is both thin, stable and low-density, foam blown polyurethane that gives the shoe additional cushioning, and polyurethane thermoplastic that makes a shoe strong and flexible.

As technology has evolved, scientists have developed new composite materials that work together to produce better performance than two or three separate materials.

Different materials offer different properties such as stability; offering resistance to twisting and warping. When weight is applied to a material over a period of time, it will creep (flatten and spread).

Some materials are used for their elastic properties, the ability to flex and bend when force is applied and then retain their original shape when force is removed. Finally, some materials are chosen for their density, which can be explained as the amount of matter that an object has per measure of space, these materials are generally used for shock absorption.

Polyurethane is a unique material that offers the elasticity of rubber combined with the toughness and durability of metal. The flexible type of polyurethane is used to make upholstery, mattresses, earplugs, chemical resistant coatings, specialty adhesives and sealants, and packaging. It also covers the rigid forms of insulation for buildings, water heaters, refrigerated transportation, and commercial and residential refrigeration. It is used in the manufacture of sports footwear due to its lightweight shock-absorbing properties, as well as being flexible and highly resistant to torsion and bending. Kevlar is one of the most important man-made organic fibers ever developed. The fiber possesses a remarkable combination of properties that has led to its use in a variety of commercial products since its invention in the 1970s. Kevlar fibers consist of long interconnected molecular chains that are produced from poly-paraphenylene terephthalamide. Kevlar offers high tensile strength with low weight, structural rigidity, low electrical conductivity, high chemical resistance, low thermal shrinkage, excellent dimensional strength, high shear strength, fire retardant and self-extinguishing. Really quite versatile!

Spiked running shoes have been around for over 100 years, created by the British company Reebok in the 1890s. Spikes were developed out of necessity. The founder of the company enjoyed running and wanted to develop a shoe that would increase his speed.