The Su God of the Reopening of the Sports Arena

Chapter 921 Landing is not easy!Su Zhao's technical improvement and adjustment
After the rest is arranged.

The main event must be the only two yellow-skinned people who have broken ten.

Even after reaching this point, their combat effectiveness has even been directly equated with the yellow-skinned whole Asia.

In addition to taking into account the rest of the project, you can't let go, and you have to start training with the latest technology.

And obviously, sprints generally have a range of 40+ steps, that is to say, your landing technique needs to be well practiced, with more than 40 steps.It seems that there are only more than 40 steps, but for ordinary people, for top [-]-meter athletes like Su Shen and the others, how to pick out the details may be the key to success or failure.

Bang, bang, bang, bang, bang.

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

The PULNIXTM-[-]CL high-speed camera system is used.

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

How about what Yuan Guoqiang said, Ersha Island is the absolute number one track and field holy land in Asia, the first point is...

You have to be equipped to keep up, right?

Otherwise, what are you talking about as the number one track and field holy land?

Now is not the era when you can get results based on a little personal experience.

After Yuan Guoqiang used these high technologies himself, he realized why Su Shen insisted on doing a good job of "upgrading Ersha Island's technology".Because compared with experience and the naked eye, this high-tech product can instantly let you understand what dimensionality reduction strike is.

Many things that don't seem too problematic to the naked eye may be completely different when viewed in a high-speed camera system.

In addition, Sushen's laboratory began to test run the ATAS three-dimensional image analysis system by itself.

Everything started to make Ersha Island completely enter the environment of Ersha Island that Su Shen was familiar with.

even.

Even more.

"It's too thick, Gou Huan, don't talk about credit cards when you land again, I'm afraid it's really a Xinhua dictionary." After reading the joint analysis of PULNIXTM-[-]CL high-speed camera system and ATAS [-]D image analysis system, Su Shen said Just said: "It's too slow to run like this, your previous rhythm may have been better."

Zhao Haohuan also sees it clearly, this is the benefit of technology, it is displayed in front of your eyes, allowing you to see clearly.

No more excuses for myself.

"During the sprint, the pedals are off the ground. After the calf is folded, the toes are hooked up and the toes are actively swung forward and pressed down for support. The moment the ankle joint is pressed tightly, the distance between the heel and the ground is only a credit card away." Zhao Haohuan immediately said in his mouth Talking about the basic "credit card rules", it can be seen that he has already memorized it fluently, but being familiar with it does not mean that you can easily display it.

"Zhao, I think the biggest problem is that you are not familiar with the movements, and you are always distracted on the ground, which leads to your complete lack of forward movement." Randy is also here. His main task this year's winter training is Fully responsible for the breakthrough and improvement of Su Shen and Zhao Haohuan.

"And here." Su Shen pointed to the slow motion of the analysis clips that were constantly playing on the computer screen, and said: "I think Gou Huan's biggest buffer moment is not well done, probably because his center of gravity is naturally too high. Between the front support and the rear support, it should be manifested that the angles of the joints, knees, and hips are minimized, and the moment when the center of mass of the body has passed the forefoot is the most appropriate moment, but there is obviously a big problem here.”

"Help me look at mine later, coach. I think I may have problems in this regard." Su Shen has always been outspoken about problems.Because this is not politics or the workplace, this is the track and field, everyone is a national player, and all goals should be to improve performance.

Moreover, he did not hide his problems, which also made many people feel that Su Shen is really "innocent".

Ordinary people would not take the initiative to admit it even if they knew there was a problem for the sake of face when they were in the position of "backbone". However, on Su Shen's side, there was basically no such thing.

Really. Straightforward.

Bang, bang, bang, bang, bang.

Su Shen also ran for a group, and came to see the analysis of the system. After looking at it for a while, Randy nodded and said: "Yes, Su, you also have this problem, and your maximum buffer time is also problematic. Zhao may be due to his height. If the center of gravity is too high, you are pressing too hard, which affects the rhythm of the credit card landing."

Su Shen took a look, and it was indeed the case. What Randy said was not wrong at all.

His group ran too much on the center of gravity.

After another group.

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

"Zhao, you have to know that sprint is a typical sport with both speed and strength. Since it is a sport with both speed and strength, the center-of-mass level speed will be one of the important factors affecting the performance of sprint. In this case, we Try to get the maximum horizontal speed, and reduce the vertical speed. Look at your piece." 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 vertical velocity causes the center of gravity to fluctuate too much, which affects the horizontal velocity, causing a loss of velocity in the horizontal direction."

Zhao Haohuan looked over and found that this was really the case.

"It may be that I paid too much attention to the problem of the maximum buffer and ignored this place. I will try to improve it later."

"Okay, you have to remember that on the premise of ensuring that the forward horizontal speed is large enough, the vertical speed should be reduced to create favorable conditions for obtaining a larger horizontal speed." Randy said, pointing to One, said: "And your hip is also affected, forget the hip, you are too tight, your hip is already very familiar, you don't need to think about it, it will affect it."

"Take it easy and focus on what needs to be improved."

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

Afterwards, Su Shen ran again, and conducted data analysis and arrest again.

This is the improvement model for real super masters, because for them, most of the existing technologies have basically been mastered, and the only problems are application and on-the-spot performance.Therefore, what they want to improve has begun to become...

detail.

detail.

detail.

Important things, say it 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 masters.It is completely different from those who have not broken ten, and there are still many technicalities that have not been thoroughly understood.

"Your center of mass also has a relatively big problem this time." Randy pointed to a part of the analysis system that popped up, paused, and said: "In the front support stage, the average speed of the center of mass in the horizontal direction of the forefoot support technology is 2m /s, the average velocity in the vertical direction is -5m/s; the average velocity of the center of mass of the full-foot support technology in the horizontal direction is [-]m/s, and the average velocity in the vertical direction is -[-]m/s, remember Is the goal we have set worth?"

"The average velocity of the center of mass of the landing technology in the horizontal direction is [-]m/s. The average velocity in the vertical direction is [-]m/s."

"At the same time, you still have the problem of poor body center-of-mass speed change in the post-support stage." Randy quickly said: "Originally, this landing technique should show a higher horizontal speed, and the average speed in the vertical direction is smaller. Yes. This shows that the speed of this technique in the vertical direction is small, the body center of mass fluctuation is small, and the impact on the speed loss in the horizontal direction is small. Not good, the entire center of mass is starting to float. We have studied and found that the "credit card" landing technique should show a high horizontal speed and a small vertical speed. It should be more conducive to the horizontal acceleration of the center of mass, and your wave , is still more like the forefoot support technology. Although there is a large horizontal speed change, the vertical speed is also very large, which will inevitably cause excessive fluctuations in the center of mass of the body and affect the forwardness of the center of mass speed."

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

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

This is why he actually still needs Randy, a professional master coach.

A reckless person is only suitable for the start-up stage, only for the stage that has not broken ten at the beginning, after breaking ten.

On the contrary, people need help even more to make a better breakthrough.

……

"The forward push stage refers to the process from when the foot touches the ground to when the projection point of the total center of gravity of the human body moves above the landing point. In this stage, since the foot of the supporting leg changes from being supported by the sole of the forefoot to supporting by the sole of the foot, and From the support of the soles of the feet to the support of the soles of the feet. Therefore, when the human body is buffering on the ground, the movement of the human body is to move from the rear 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. Good. You can try."

……

"I think that in the early stage of landing buffer, since the projection point of the total center of gravity of the human body falls behind the landing point, the swinging leg becomes the supporting foot after landing on the ground, and the force given to the ground by the sole of the foot points forward and downward, and the force is decomposed into vertical downward components. and the forward horizontal component force, so that the body produces a force that slides forward. At the same time, the body is subjected to the reaction force of equal size and opposite direction on the ground. The support reaction force can also be decomposed into a vertical upward component force and a backward horizontal component force. The direction of this force is opposite to the direction of body movement, which is the resistance of movement and a kind of braking force, which impels the human body to perform deceleration movement. Since the human body swings its legs actively backward and downward when it is in the air, the feet of the swinging legs Actively and proactively land on the ground by pawing the ground. The correct ground pawing technique can reduce the horizontal speed of the foot relative to the ground at the moment of landing, and reduce the horizontal braking force of the ground facing the human body. Scratch the ground, pay attention to this."

……

"In the late stage of landing buffer, as the body moves forward, the projection point of the center of gravity of the human body moves rapidly from the vertical upper part of the heel to the vertical upper part of the landing point. However, since the human body is moving above the support surface, the supporting reaction force received by the human body The direction is pointing forward and upward. The horizontal component of the human body’s support and reaction force is in the same direction as the human body’s movement. Move. I don’t know where the problem is, please help me wait and see.”

……

"I think there will be this problem. It may be that the angle of the hip joint tends to increase during the cushioning process. The angle of the knee joint has been decreasing. The angle of the ankle joint first decreases and then increases, which shows that during the forward push phase, The hip joint muscles are always restrained and contracted, and the knee joint muscles are retracted. When the human body changes from front kick to back kick, the angle of the knee joint also changes from the original decrease to increase, and the contraction characteristics of the muscles also change from Concession turns into restraint. The ankle joint angle is reduced until the center of gravity of the body moves from the back of the support point to the vertical top of the heel until it can no longer be reduced. Its muscles are contracted in a retreat. When the center of gravity of the body moves from the heel In the process of moving from the vertical upper side of the foot to the vertical upper side of the landing site, 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 before forcing the heel to rise and the angle of the ankle joint to increase. A shift into restrained contraction leads."

"No, no, I still think it is in the early stage of landing buffer. The reason why the center of gravity of the human body is behind the support surface. Because the human body is resisted by the horizontal support reaction force given by the soles of the feet to the ground. In this process, although the hip joint muscles are Carry out restrained contraction, the contraction force acts on the ground through the supporting feet, and the horizontal component force of the supporting reaction force generated is in the same direction as the human body movement. This is the power, but the power is smaller than the resistance, so the human body still works Slow down."

"But if you say this, you can't explain clearly the problem that the projected point of the center of gravity of the human body moves from the vertical upper part of the heel to the vertical upper part of the landing point in the late stage of the landing buffer. Because the horizontal component of the supporting reaction force is in the same direction as the human body movement , and if the hip joint and ankle joint muscles perform restrained contraction at the same time, the contraction force increases the acceleration of the human body through the horizontal component of the supporting reaction force generated by the supporting foot acting on the ground, which is obviously incompatible."

……

In such an atmosphere, the whole winter training was going on continuously.

If there is no god-given abnormal plug-in, if you can only rely on future scientific knowledge, this is the scene.

This is also the scene that will inevitably appear when adding and adjusting skills in winter training for real elite-level track and field sports.

Of course, this is already a common thing in Ersha Island, but it shakes the hearts of Liu Xiang and Sun Haiping every day.

After all, if athletes can participate in discussions with coaches about these things, then how good the training background of this training base will be.

Simply unimaginable.

"I'm really looking forward to the results after this winter training."

It has to be said that when he came to Ersha Island for the first time, Liu Xiang himself began to look forward to and look forward to his performance after the winter training.

It is said that Ersha Island's "winter training is amazing", but this time I have to see for myself how amazing it is.

PS: The first update~~~~~~~~~
The technical part is more difficult, so it is still the same, and I will write slower~~~~~~~~~
(End of this chapter)