From a mechanical point of view, it is the expansion and contraction of human muscles that enable athletes to gain speed and kinetic energy, mainly the soleus muscle on the calf, but this is only an internal cause. What makes people get acceleration is the friction between the sole of the foot and the ground, but this kind of friction can't be attacked, that is to say, this kind of force can't make athletes get kinetic energy, because there is no displacement in theory, but in fact, due to various reasons, the sole of the foot and the ground have relative displacement, but this relative displacement is opposite to the friction, which is called negative work in mechanics. This will affect the speed of athletes, and wearing spikes will prevent or eliminate relative displacement, so that all the work done by athletes' muscle expansion can be used to gain speed.
Simply put, it is to prevent slippery. Theoretically, friction cannot be increased.
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Types of spikes and types of nails
With the development of science and technology, spikes are constantly improving and innovating. Challenge the limits of mankind. Bolt set the world record of 100 meter in 9.58 seconds, wearing short running shoes with five nails. Now everyone uses sports shoes with six nails, seven nails, eight nails and nine nails. Our runners in Tianjin basically use seven-nail shoes.
The types of nails are divided into spiral, cone and square cone. And ordinary type. There are three kinds of nails: long, medium and short. Run on diamond, plaid and ordinary plastic tracks respectively. Find out the spikes that suit you and the track you need in practice.
The distribution of nails on spiked shoes is very particular. The spikes used by Tianjin runners are 7 nails. Evenly distributed. The focus is more unified. The three nails outside are very hard. The spikes worn by Xu Yuanshan are also seven nails. In two rows, in front. Need more ankle strength. In short, no matter what kind of spikes you wear to go to the gym. It can improve the speed. Come and have a try!
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Benefits of spike training:
Attention, everyone, please don't wear spiked shoes for splayed running. Because the stress points of spikes are different. The force of the rear pedal is not forward. Easy to fall.
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Running in spikes. Completely relaxed. The back pedal force is large, and the back pedal angle is large, which leads to fast folding, strong leg swinging force and fast leg swinging speed. Increased the frequency of running. Increased the speed.
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Wearing spikes can give full play to your running skills. Wearing spikes has a desire to run fast in my heart. This is a mental reaction to promote yourself to learn new moves and techniques.
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Running with spikes is the embodiment of scientific training. The innovation of competitive sports depends on science and technology. With the development of science and technology. We can experience new training methods. It is also an attempt.
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Amateur runners try to run with spikes. Don't worry about it. Take your time. Practice 50 meters if you can run 50 meters. Because running with spikes requires high muscle strength, muscle fiber and muscle metabolism. Teenagers adapt quickly. For those of us in our thirties and forties, it is very slow to adapt. I have my own experience. I only ran 600 meters. I dare not run with all my strength. The reaction is quite big. But running with spikes is definitely good. There is a 74-year-old man named Su in Tianjin. He often wears spikes for training. He is used to it. I hope everyone can communicate frequently after wearing spikes. Conditional runners run on various plastic tracks. Talk about experience for everyone to learn.
One more thing.