After the rest is arranged.

The highlight is definitely the only two yellow skins with more than ten.

Even after reaching this, their combat effectiveness has even been directly equated with the yellow skin all over Asia.

In addition to taking into account the other projects, you cannot pull down the latest technology, and you also need to start training.

And it is obvious that sprinting is generally a 40-step range, which means that you need to practice your landing skills well, with more than 40 strokes. It seems that only more than 40 steps, but for ordinary people, for top 100-meter athletes like Su Shen and others, how to get the details well may be the key to success or failure.

Bang, bang, bang, bang, bang.

Zhao Haohuan ran quickly, and after a few dozen meters, he stopped and walked over to watch the capture of the high-speed camera with Su Shen.

The pulnixtm-6710cl high-speed camera system is used.

This is the most advanced high-speed camera system in the world.

Otherwise, what Yuan Guoqiang said, Ersha Island is the most absolute number one track and field holy place in Asia, the first thing is...

You have to keep up with the equipment, right?

Otherwise, what are you talking about the first track and field holy place?

This is not the era when we were able to achieve results based on a little personal experience.

After Yuan Guoqiang used these high-tech himself, he understood why Su Shen had been insisting on it and had to do a good job in "technological upgrading of Ersha Island". Because compared with experience and naked eyes, this high-tech product can instantly let you understand what a dimensionality reduction strike is.

Many things that don’t look too problematic when you look at them with a naked eye may be completely different when you look at them in a high-speed camera system.

Then, Sushen Laboratory started trial run of the Atas three-dimensional image analysis system by itself.

Everything began to completely enter the Ersha Island environment that Su Shen was familiar with.

even.

Even more.

"It's too thick, Gou Huan, you're going to get back on the ground and let alone credit cards, it's probably really a Xinhua dictionary." After reading the joint analysis of the pulnixtm-6710cl high-speed camera system and the Atas three-dimensional image analysis system, Su Shen said: "It's too slow to run like this, your previous pace may be better."

Zhao Haohuan can also see clearly. This is the benefit of technology. It will be displayed in front of you with your own eyes and let you see clearly.

I won't make any excuses for myself.

"During the sprinting, the foot pedals off the ground, after folding the calf, tighten the toes and actively push forward and support, the ankle joint is pressed, and the heel is only a credit card distance from the ground." Zhao Haohuan immediately muttered the basic "credit card rules" in his mouth. It can be seen that he had memorized it well, but memorized it well does not mean that you can easily display it.

"Zhao, I think the biggest problem is that your actions are not familiar with them, and you are always distracted, resulting in your progress completely gone." Randy is also here. His main task is to fully be responsible for Su Shen and Zhao Haohuan's breakthroughs and improvements.

"And here." Su Shen pointed to the slow motion of the analysis clip that was constantly playing on the computer screen and said: "I think Gou Huan's maximum buffering moment was not done well, maybe because his center of gravity was naturally too high. Between the front and rear support, it should have been impatience, the angle of the three joints of the knee and hip was minimized to the greatest extent, and the center of mass of the body had passed the forefoot, but there was obviously a big problem here."

"I'll help me see my coach later, I think I may have problems with this." Su Shen has always been blunt about the problem. Because this is not politics or workplace, this is the track and field field, everyone is a national team member, and all goals should be to improve their performance.

Moreover, he did not hide his own problems, which made many people feel that Su Shen was really "childish".

Most people who have reached the position of "backbone" will at least make a fuss about their face, and even if they know there is a problem, they will not admit it. However, Su Shen has basically never had such a thing.

True, say it right.

Bang, bang, bang, bang, bang.

After Su Shen ran a group, he came to see the system analysis. After watching for a while, Randy nodded and said, "Yes, Su, you have this problem, and you have a problem with your maximum buffering moment. Zhao may be because of his height, and his center of gravity is too high, and you are pressing too hard, which affects the rhythm of credit card landing."

Su Shen looked at it and it was true. Randy said nothing wrong.

His group ran too much.

Another group.

"Zhao, the ankle angle when you left the ground was a little better, but the ankle angle was still not good at the maximum cushioning moment, it was too high." Randy looked at the screen analysis system and said: "The change in the center of mass velocity of the body in the front support stage is very problematic."

"Zhao, you should know that sprinting is a typical velocity and strength project. Since it is a velocity and strength project, the horizontal speed of the center of mass will be one of the important factors affecting the sprinting performance. In this case, we strive to obtain the maximum horizontal speed in the training of sprinting and reduce the speed in the vertical direction. Look at your part." Randy pointed to a part of the screen and said: "The vertical speed of the center of mass has a greater impact on the horizontal speed. The larger vertical speed causes the center of gravity to fluctuate too much, which affects the speed in the horizontal direction and causes the speed loss in the horizontal direction."

Zhao Haohuan looked over and found that this was true.

"Maybe I was paying too much attention to the maximum buffering issue and ignored this place. I'll try to improve it later."

"Okay, you have to remember that when the forward horizontal speed is sufficiently guaranteed, the speed in the vertical direction should be reduced to create favorable conditions for obtaining a larger horizontal speed." Randy said, pointing to another one, saying: "And your hip delivery has also been affected. Forget the hip delivery, you are too tight, and your hip delivery is already very familiar. You don't need to think too much, but it will affect it."

“Just relax and focus on where you want to improve.”

"Okay, I'll try again later." Zhao Haohuan nodded.

Afterwards, Su Shen ran away again and conducted data analysis and capture again.

This is the improvement model of real super experts, because for them, most of the existing technology has basically been mastered, and there is only the problem of application and on-site performance. Therefore, the place they want to improve has begun to become...

detail.

detail.

detail.

Say important things three times.

So you can often see Su Shen and Randy sitting together on Ersha Island, staring at the computer screen, expressing opinions from time to time, and nodding from time to time. This is the improvement scene of international experts. It is completely different from those who have not broken through ten or have not understood the skills.

"Your center of mass also has a big problem with this time." Randy pointed to the part of the analysis system popped up, clicked a pause, and said: "In the front support stage, the average speed of the forefoot support technology center of mass in the horizontal direction is 8.268m/s, and the average speed of the vertical direction is -0.175m/s; the average speed of the full foot support technology center of mass in the horizontal direction is 8.535m/s, and the average speed of the vertical direction is 0.207m/s. Do you still remember the target value we set?"

"The average velocity of the center of mass of the grounding technology in the horizontal direction is 9.787m/s. The average velocity in the vertical direction is 0.025m/."

"At the same time, you have the problem of poor change in the center of mass in the rear support stage." Randy said quickly: "Originally, this landing technology should have shown a higher horizontal speed, and the average speed in the vertical direction is smaller. This shows that the technology has a smaller speed in the vertical direction, and the center of mass fluctuations in the body has a small impact on the speed loss in the horizontal direction, which is conducive to the horizontal forward speed in the rear support pedal stage. However, if this part is not done well, the entire center of mass point has begun to float. We have already learned that the "credit card" landing technology should show a very high horizontal speed and a small vertical speed. It should be more conducive to the horizontal acceleration of the center of mass, and this wave is still more like the forefoot support technology. Although there is a large horizontal speed change, its speed is also very high in the vertical direction, which will inevitably cause the body's center of mass to fluctuate too much, affecting the forwardness of the center of mass velocity."

"Yes." Su Shen also looked at it seriously and nodded slightly.

At this level, subtle technological changes may determine success or failure.

This is also the reason why he actually needs Randy, a professional master coach.

If a person is rash, he is only suitable for the pioneering stage, only suitable for the stage where he has not yet broken ten at the beginning, after breaking ten.

Instead, we need help from others to make a better breakthrough.

...

"The forward pedal stage refers to the process from the grounding of the foot to the projection point of the human body's total center of gravity moving to the upper part of the ground. At this stage, since the foot of the supporting leg is changed from the grounding support to the grounding support of the whole foot, and then from the grounding support of the whole foot to the grounding support of the forefoot. Therefore, when the human body is buffered by the grounding, the movement of the human body is moved from the back of the support point to the vertical top of the heel, and then from the vertical top of the heel to the vertical top of the forefoot. You can try it."

...

"I think in the early stage of landing buffering, since the projection point of the total center of gravity of the human body falls on the ground, after the swinging leg hits the ground to support the foot, the force given to the ground by the soles of the feet pointing forward and downward, and its force is decomposed into vertical downward component forces and forward horizontal component forces, causing the body to slide forward. At the same time, the body is subjected to reaction forces in opposite directions of the ground, and the support reaction forces can also be decomposed into vertical upward component forces and horizontal component forces in backward.

The direction of this force is the opposite direction of the body's movement. It is the resistance to movement, which is a braking force, which prompts the human body to slow down. Because the human body swings its legs when it is in the air to swing backwards and downwards, so that the foot that swings its legs actively and actively lands on the ground in a way that is stripped. Correct ground-pulling technology can reduce the horizontal speed of the foot when it falls against the ground and reduce the horizontal braking force of the ground facing the human body. You are too concerned about buffering and neglecting to strip off the ground. You should pay attention to this."

...

"In the later stage of landing buffering, as the body moves forward, the projection point of the human body's center of gravity moves rapidly from the vertical above the heel to the vertical above the ground. But since the human body moves above the support surface, the support reaction force received by the human body will point forward and upward. The horizontal component of the human body's support reaction force is the same as the direction of movement of the human body, which is a kind of motivation, which prompts the human body to accelerate movement, but when I ran just now, I didn't feel the body moving forward at all. I don't know where it is except for the problem, please wait and take a look."

...

"I think there is this problem. Maybe it is that the angle of the hip joint tends to increase during the ground cushioning process. The angle of the knee joint is constantly decreasing. The angle of the ankle joint is reduced first and then enlarged. This shows that in the forward pedal stage, the hip joint muscles always restrain and contract, and the knee joint muscles undergo concessional contraction. When the human body turns from the front pedal to the back pedal, the knee joint angle also changes from the original to the original, and the contraction characteristics of the muscles also change from concessional to restrain and restraint. When the human body turns from the front pedal to the back pedal, the knee joint angle also changes from the original to the original, and the contraction characteristics of the muscles also change from concessional to restraint.

.The ankle angle moves from the back of the support point to the vertical top of the heel, and it will be reduced until it cannot be reduced. The muscles undergo concessional contraction. During the process of moving the center of gravity of the human body from the vertical top of the heel to the vertical top of the place, due to the structural characteristics of the ankle joint and the deformation range of the Achilles tendon, the angle of the ankle joint cannot continue to decrease, which will force the angle of the heel and the ankle joint to increase and enter restrained contraction."

"No, right, I still think it is because the ground is buffering the ground in the early stage. The center of gravity of the human body is behind the support surface. Because the human body is subjected to the horizontal and backward support reaction force given by the soles of the feet to the ground as resistance. In this process, although the hip muscles contract in restraint, their contraction force acts on the ground through the support foot, the horizontal component of the support reaction force generated is the same as the direction of movement of the human body. This is the power, but the power is less than the resistance, so the human body still slows down."

"But if you say this, you can't explain clearly the problem that the projection point of the human body's center of gravity moves from vertically above the heel to vertically above the ground in the later stage of the ground buffer. Because the horizontal component of the support reaction force is the same as the direction of movement of the human body, and if the hip joint and the ankle muscles simultaneously contract at the same time, the contraction force increases the body's acceleration movement through the horizontal component of the support reaction force generated by the support foot acting on the ground. This is obviously not in line with this."

...

The whole winter training is in such an atmosphere, constantly underway.

If there is no perverted plug-in in the world and can only rely on future scientific knowledge, this is the scenario.

This is also a scene that will inevitably occur when winter training for track and field at the elite level.

Of course, this is something that is accustomed to on Ersha Island, but it shocks Liu Xiang and Sun Haiping's hearts every day.

After all, if athletes can participate in discussions with coaches, then how good the training foundation of this training base would be.

It's simply unimaginable.

"I really look forward to the results after this winter training."

I have to say that when Liu Xiang came to Ersha Island for the first time, he began to look forward to and look forward to his performance after the winter training.

It is said that Ersha Island’s “winter training magic” is magical. This time I have to see with my own eyes how magical it is.

PS: First update~~~~~~~~~~~
Chapter completed!