Since there haven't been many games recently, Su Shen has entered a short period of rest and adjustment.
At this time, the main thing is to do tactical analysis and technical review.
Not only do you do your own thing, but why this shot can run in 9.73 seconds, and the angle of each step can even be analyzed to see if it is perfect. Although the data is only theoretical, it can at least tell you that you still have room for optimization.
This will give athletes the motivation to continue working hard.
The second step is to teach Xie Zhengye to learn the truly systematic "scientific wind control technology".
Then there are the opponents...
Yes, technical analysis of opponents must also be done.
This is something you couldn't do without a scientific team before, because this analysis is not just a few words. This requires practical technical details and detailed data.
Otherwise, it's pointless.
This is what Su Shen does after every game now.
Never let go of any opponent easily.
No matter what the opponent's game status is in this game, we don't look for it from the opponent's comments or make our own guesses, but find the answer from scientific running data. This is the review brought by the scientific team. Compared with the previous review, it can only be said...
The gap is too big.
"Before the review, let us welcome Coach Zhou Wei and Coach Li Tao who have recently applied to be transferred to study for a period of time." Zhang Quan said: "I believe everyone is familiar with who these two are, and there is nothing to introduce. Yes, please sit down, you two, and we will start directly."
Zhou Wei and Li Tao are both former national record holders, and the latter set a new Asian 100-meter record at the age of eighteen.
Now they are all coaches, one leads a sports school at the grassroots level to gain experience for himself, and the other is a senior coach in the Sichuan-Sichuan team.
Since there are no Olympic Games and World Championships this year, they can all spare their time and come over to study hard.
In the previous OW year, Zhou Wei also worked as an assistant coach for other provincial teams. In fact, it was not easy to find time.
Now, the Su Shen system has really come in. The two of them can finally take a good look at what magic this Su Shen system and Ersha Island have, which can make athletes improve so much and increase the sprint team's card winning rate in the International Bureau. , the finals rate is getting higher and higher.
The room lights dimmed and the game started playing.
After running, I started to analyze step by step.
"This is a loop playback of several people through Dartfissh. We talked about Su Shen earlier. Now let’s focus on Su’s opponents, Tyson Gay, Asafa Powell, and Usain Bolt. ." Randy led the team in front and began to explain in detail: "It is better to calculate the single frame time first, then calculate the time of each distinction, and finally use software to test the key data nodes."
"The basic segmented data is as follows:"
"Reaction time 20m 40m 60m 80m 100m."
"Guy 0.164 2.933 4.732 6.412 8.153 9.84 Bolt 0.176 2.946 4.751 6.632 8.243 9.97"
"We can see that in this game, Bolt was not only slow at the start, but also accelerated slowly, and his running was a mess. Green has said before that Bolt's technical movements are not particularly good. Now in this game, the fulfillment is more obvious. First, let’s look at the characteristics of these two people in this game. Guy took 46.46 steps in this game, and Usain Bolt took 42.24 steps. Then let’s look at the average Guy's cadence is 4.679s and Bolt's is 4.257s. Then the cadence index of this game can be calculated. Guy is 8.422 and Bolt is 8.343s. Let's look at Guy's average step length in this game. , is 2.192m, Bolt is 2.404m, the former’s step index is 1.217, and the latter’s is 1.226.”
"This is basic test data. We all know that step length and step frequency have a greater impact on an athlete's fastest speed level and 100-meter performance. The simultaneous development of step frequency and step length capabilities ensures the improvement of sports performance. Step length and step frequency are mutually restricted and interdependent. The factors that affect step length are: leg length, the force and direction generated by the legs, the amplitude of the swing of the lower limbs, body coordination, joint flexibility, the elasticity of the track, and the wind direction of the field. etc."
"It is known that the factors that affect the cadence include the following aspects: the flexibility of the athlete's neural process, the ratio of the lower leg movement link, the muscle strength of the joints and legs, the continuity of muscle contraction, the coordination of the action organs, etc. . On this basis, we use the step length index and frequency index to study the step length and step frequency ability of the 100-meter dash, thereby revealing the essential characteristics of the two people in the 100-meter dash. First, based on the height factor, through the From the calculation and statistics of the step length and step frequency index of Guy and Bolt, we can see that: first, from the perspective of step length and step frequency index, Guy is 8.422 and Bolt is 8.343. Under the same circumstances, the longer the length of the lower limbs, the greater the swing amplitude of the lower limbs, the greater the rotational inertia, and the slower the leg swing speed, the cadence will decrease. This is the advantage of the 100-meter dash. Because of their height, two people There is not much difference in step frequency, and there is not much difference in step length. Bolt's step length is slightly longer. In actual combat, whether it is adjusting the step frequency, adjusting the step length, or Adjusting both methods at the same time will cause great variables. Of course, everyone's step length and number of steps are different, which will greatly affect the fastest speed of each sprint and the performance of each sprint. If you deliberately increase the number of steps, it will lead to a decrease in stride frequency. From this perspective, in the first half of this game, Gay's center of gravity was very low, and his feet moved very quickly on the scissors, and the angle was very Big, so his feet move very much on the scissors. Bolt has a problem with his center of gravity here, and he hesitates to start. His core muscle control, especially when starting the scissors, is worse than usual. A lot, resulting in a future of only 6.63s, which is completely inferior to his 2008 race. However, in this regard, Su’s performance before entering the sprint area was much better. I mentioned it yesterday, so I won’t say more.”
Randy continued quickly and calmly: "Running is a very cyclical sport. A running cycle can be divided into two movement cycles: support and airborne. The frequency of steps depends on the support of the soles of the feet and the time it takes to leave the ground. . We can see here that roughly Guy's support time is 0.100 seconds, 0.114 seconds, and Bolt's support time is 0.067 seconds. And 0.100 seconds. In terms of support and air time, Bolt's speed Be faster than Guy. According to the current theory of biomechanics, the longer your action lasts, the greater the countershock force you receive. In this way, Guy gets more momentum, and Guy steps out in one step The distance is farther than that of Bolt, and Gay's average step frequency is also slightly higher than that of Bolt. Under the same circumstances, the same step length, step frequency, and step speed are faster. In a take-off time and In terms of support ratio, the ratio of support points to support points in mid-range running for the world's top athletes is about 1.2:1."
"So it can be concluded that in this game, Bolt's stand-up ratio was also completely defeated."
"If he wants to be faster, he must shorten the support time and shorten the air time."
"Let's talk about the analysis of the angles of the ankle, knee and hip joints during running with support. The three stages of front support, back support and flight are all represented by the amplitude of the angle. The specific data of these three periods are mainly It is determined by changes in the angles of the ankle, knee, and hip joints. Through the analysis of the video, we can see that the moment Guy lands on the ground, the ankle joint angle reaches 126.5 degrees, and then at the moment of vertical buffering, the ankle joint angle reaches 126.5 degrees. The angle reached 86.4 degrees, the buffer angle reached 40.1 degrees. At the moment when the back support push-up and extension was completed, the angle of the ankle joint reached 137.5 degrees, and the range of toe flexion reached 51.3 degrees. Here you can find that his ankle joint touched the ground and gave way to the buffer. and pedal extension force have the characteristics of a large range of motion. And because the ankle joint angle is larger, it shows that Guy's ankle joint strength performance is better this time, so the ankle joint angle can increase the landing angle at the moment he lands, thus making The step length increases.”
"From the perspective of changes in knee joint angle, the smaller the knee joint angle is, it is conducive to muscle contraction, thereby reducing the back pedaling angle. Guy's knee joint angle is 7.9° less than Bolt's, which makes it easier for him to accelerate forward horizontally. ability. The force-generating joints during mid-range running are the ankle, knee, and spinal joints, and because the hip joint has a larger number of muscle fibers, this part of the joint is at the most critical position. In a single step, The hip joint performs hip movement. Although Guy's hip joint movement range is 2.1° smaller than Bolt's, it is conducive to the eccentric work after contraction and is more conducive to Guy's hip joint movement range. This shows that: Bolt's joints The flexibility is slightly worse than that of Guy in this game, which is not conducive to the muscles pushing back to generate huge muscle strength and affects the improvement of horizontal speed."
"Look at the landing angle of Gay, which is 126.5, and Bolt, which is 119.3..."
"So Guy's 6.412s is significantly ahead of Bolt's 6.632 in the future. Bolt's performance is only in the back, and the data has not dropped much compared to last year. Guy's back is 3.428s, Bolt is 3.338s .Hucheng went back probably 0.1 ahead."
"It's a pity that the front is too far behind, making it impossible to catch up. It is probably that Bolt's starts were too fast twice in a row and he did not start running. As a result, his current physical reserves cannot be loaded, and his heart and lungs cannot be loaded, resulting in poor performance ahead. Dramatically out of whack.”
"But this is not the state that Bolt should be in. Judging from what will happen later, he is actually better than Paris now. It may not be easy to fight Bolt now. Maybe, He's also back up to 9.73s and even 9.72s."
"Maybe higher, maybe."
"This game is hard to say."
"Therefore, we must not underestimate him. We cannot underestimate the opponent just because he does not seem to be running well in this game, thinking that the opponent's condition has been greatly reduced. Considering normal circumstances, perhaps he is much stronger than everyone thinks. "
When Randy led the technical team to give explanations and technical analysis, the entire scene was attentive.
No one had any intention of taking a nap.
Except for the last two people, they were really dumbfounded.
…
After the whole game, apart from the last time he was in the lounge, this time Zhou Wei once again saw the power of the Su Shen system.
As soon as he came out, he felt like he was listening to a book from heaven, and even felt that his mind was a little numb throughout the whole process.
He turned to look at his more senior senior Li Tao, wanting to ask for help. Unexpectedly, Li Tao said openly: "Don't look at me, I don't understand either."
"But is this their review?"
"It's really a big saw in the butt, it's an eye-opener."
Thinking of this, and then thinking about my past reviews, it’s really...
Completely turned into a scumbag.
Not worth mentioning.
It's basically the difference between Hongying Gun and Gatling.
The difference between strong bows and crossbows and rocket launchers.
Now they can use the technical indexes and technical parameters that they don't even understand very well, and they can even pick them from angle to angle. This was unimaginable before, but now that we have models, systems, and powerful computing power, everything has become feasible.
In fact, this does not need to be too complicated. Computers in the 1990s could easily do it. Even then, there was no software development in this area.
"Haha, through a series of data such as the angle of the ankle joint, the range of toe flexion, and the back support push-extension buffer angle, it can be directly concluded that Guy's ankle joint strength performance was better in this game, while Bolt's ankle joint strength performance was insufficient. , so we can conclude why Guy's average step index increased and Bolt's average step index decreased in this game..." Li Tao lit a cigarette, his thoughts obviously still stuck in the review observation room. , looking at the sky that is not gray and white, said: "You can know exactly which technique the athlete is using in this game, even which joint, and even which angle is problematic, and directly determine where mistakes have occurred, as precise as a scalpel... But we used to just talk in general terms, and if someone gives you detailed data, it will completely knock you to the ground."
"You have so much experience, do you think so?" After all, Zhou Wei had just switched to the coaching industry not long ago, and he thought that a veteran like Li Tao would be different. As a result, he took a puff of cigarette, looked at him and said calmly: "Experience? "
"You saw it too."
"In terms of data that is so detailed that you can reach your toes, is our so-called 'experience' really useful?"
"Haha, it's useful."
Li Tao threw the almost finished cigarette butt on the ground, stepped on it with his heel a few times, and then said: "It's too far."
"If you take one of these problems, we might have to study it for half a year or even several years before we can't figure it out, or even get it wrong. Now people can do it like tapping acupuncture points, and they can target them everywhere, and every move is fatal."
"Data, models, subtle insights, and the power of science seem to be an irresistible trend in the future."
"Kid." Li Tao looked at Zhou Wei, a junior who had just retired a few years ago, and said, "Study hard."
"This is our land in the future."
"You don't learn."
"Maybe I won't even have to eat."
Zhou Wei was stunned when he heard this. After all, everyone knew who Li Tao was and who his master was.
He was one of the best coaches of the national team, the fastest athlete in the country, the first super master to break ten seconds and tie the world, and the proud disciple of Chen Jiaquan. If he says so, then...
I'm afraid if you really don't study hard, you won't have a chance to make a living in the future.
And after listening to today's class, Zhou Wei himself was completely shocked by this super review, super data, and super model that was like "peeling your skin and digging out your bones." In the past, you may not be able to analyze things for countless days, and they may be in the wrong direction. Now people use these to make accurate judgments. To put it bluntly, in the future, it may develop into "athletes have no choice in a game." If you run well, which muscle is the problem?"
Such a shock was completely incomprehensible to their generation.
It was just like the Qing government standing in front of the advanced thermal weapons of the Eight-Power Allied Forces.
He looked down at the spear and sword in his hand.
No matter how bright or sharp it is, it actually loses its meaning.
This is the leader of the entire era. If you don’t join, you will perish.
Why do the people on Ersha Island progress so quickly?
Why is the winning rate of people from the Su family so high?
Just a genius? Just a training method? Just a training philosophy?
No, I thought I knew everything.
Looking at it now, everyone's post-war replays are so terrible, surpassing countless domestic versions.
Even a few years ago, there was a touch of metaphysical magic.
Only then did Zhou Wei realize that they were so powerful, and they were the result of research from all aspects.
It doesn’t mean that just one aspect is outstanding.
This is real sports science.
This is the sports science of the future.
Just like what Li Tao said.
You don't join.
Just eliminate.
There is no choice.
PS: Third update~~~~~~~~~~~~~~~~~~ Rush! ! ! ! ! ! ! ! ! ! ! ! !
Thanks to Qin Meng Dada, Straw Hat Ding Ding Da Da, Book Friends 20221111180441638 Da Da Da, Pindaotong Da Da Da Da, Tree New Buds Da Da Da Da, Impermanent Cloud Da Da Da, Wandering Alone on a Rainy Night for the rewards! ! ! ! ! !
I will continue to work hard! ! ! ! ! !
(End of chapter)
