To use Randy's original words in later generations, it is -

"I often tell some coaches not to argue with me about scientific issues. What I tell you now is that scientists around the world have already recognized things, and you just need to do it. Without the integration of scientific knowledge such as training psychology and biochemistry human mechanics, you cannot create a new training system. This is basic common sense."

"Education is not to encourage flower-planting coaches to study in the United States, because a lot of knowledge is placed where and they are all Chinese. The coaches only need to study seriously and systematically in class... I think flower-planting coaches should allow all coaches to participate in scientific training. If they do not undergo classroom training, they will not be given a diploma. To let the coaches understand that this is my major, and all our coaches on duty must be professional."

Referring to Randy's words, training is truly scientific and moving away from the "empirical trainingism" that once dominated the track and field training system for decades or even longer, you must have real scientific reserves. And it is not a person, and it requires a lot of smart minds to work together.

After all, a person's mind always has its limits.

Even if Su Shen himself hadn't reopened, he wouldn't have done so many things alone.

And in the later stages, even he needs a strong and stable team and laboratory to constantly innovate.

The most taboo thing in sports science is to be self-satisfied.

If things are the best, then you will no longer surpass and break through, then you will lose the meaning of the scientific movement.

"In the end, it's myself." Su Shen asked Randy and the others to come back, but Randy waved his hand to refuse.

Because Randy and Ralph Man hope that God Su can do it himself.

For them, although bringing out a few excellent athletes also has a high sense of accomplishment, the highest sense of accomplishment still helps a country to build an overall scientific sports system. These ultimately require their own people to operate.

Seeing the two people expressing this, Su Shen had nothing to say. He nodded and continued to say to the video played: "This is my 100-meter four shots this time."

"You can see that from the preliminaries to the finals, the number of steps in the four shots has actually increased slightly, the average step frequency is also increasing, but the average step length is shrinking. In other words, my step frequency index is increasing as the game progresses, and the step length index is shrinking."

"The following shows the changes in the step frequency of the 100-meter running process of the North Olympic 4 gun this time. It can be divided into two situations: one is the up-frequency after the start - maintain - fall, showing an inverted "V" shape. The other is the up-frequency after the start - hold - fall - re-add - fall, and the pace frequency change trend of the entire process is the "M" shape."

"Considering the relationship between excitation and inhibition of the nervous system, the high-step frequency running method often cannot appear many times and maintain extremely high pace frequency during the fast running process. The previous one mainly appears in the preliminary and semi-finals and finals, and the latter semi-finals and finals are both M-shaped, so I think the latter one may be more research-based under current physiological conditions in high-intensity confrontation."

"And now it's the same comparison with Bolt." Su Shen pressed the pause button, and a running picture of himself and Bolt appeared on the big screen, saying: "We can see that Bolt's pace frequency for a long time or distance in the 100-meter run was unchanged during the 100-meter run. The other players, including myself, all had large fluctuations in these segments. Especially after 60 meters, the fluctuations became more and more obvious."

"Then what does this fluctuation mean? Look at this set of data. When Bailey broke the world record, the entire step frequency change was very small. The maximum and minimum step frequency difference between the entire step frequency was only 0.1 step/second. The first 10 meters reached 4.63, and it remained until 30 meters. From 30 to 60 meters, his step frequency rose to 4.72 steps/second, and in the last 60 to 100 meters, the step frequency returned to 4.63 steps/second. "Su Shen looked at the big screen seriously and said, "So his step frequency change line was almost a horizontal line."

"Then we need to make a hypothesis. Compared with the other players, Bolt's stride frequency throughout the whole process is lower. Is the lower stride frequency able to last longer and not easily fatigue?" After clicking the mouse, Su Shin said: "Although Bolt is a stride frequency type, due to physiological conditions, his stride is naturally very large. For example, running 40.5 steps a hundred meters and others running 49 steps. From the perspective of energy distribution, you only ran his

About 80% of the distance. According to the data, we can find that, whether it is a Chinese athlete or a foreign athlete, as long as the six-second law is correctly stimulated, most of the athletes will start to slow down at steps 30-34. If you have a large stride and 27 steps to 60 meters, then you may have to go beyond 80 meters to enter the physiological natural speed reduction stage mentioned above. If you have a small stride and 32 steps to 60 meters, then you will naturally start to slow down around 65 meters. Due to the excitation and inhibition mechanism of the nervous system, it is impossible for people to maintain a very high frequency for a long time, and only through the rise and fall frequency to complete a hundred-meter run throughout the process, so how to stabilize becomes a key."

This chapter is not finished yet, please click on the next page to continue reading the exciting content behind! "But is it better the bigger the stride?" Su Shen looked down and said, "That's definitely not."

"Because even the stride is not without Bolt, such as Bloomfield (running over 39 and a half steps in 100 meters). If you consider the physiological proportion of the human body, look at the stride index, Gatlin, Bailey Cole, Mike Rogers, etc. are better than Bolt. Therefore, the idea of ​​simply expanding strides in China is not suitable for everyone. To reduce and eliminate redundant "expanding strides", the stride frequency stride matching is the best. After all, the essence of modern sprinting is the relaxation technology in high-speed displacement based on pedals. Therefore, we must determine that creating a different golden stride and stride ratio for everyone according to the physiological conditions of the human body is the future trend."

"Our country is trapped in the fact that people usually regard step length and step frequency as "cause" and speed as "effect", that is, what people usually think of "what step length and step frequency, what kind of running speed will appear." Su Shen said: "Most people start from the perspective of optimizing step frequency and step length to study the improvement of special speed. But in fact, there is no direct causal relationship between step frequency, step length and special speed. Running speed belongs to the kinematic parameters of the horizontal displacement of the center of gravity when the athlete is in the running state, but step length and step frequency belong to the spatial and temporal structural parameters. Both sides describe the kinematic indicators of athletes' running from different angles."

"What is the most reasonable thing to do? There have been similar statements for a long time, such as the reasonable speed = the athlete's maximum step length is 94.12.9% x maximum step frequency 95.1±3.5%. Therefore, in the future, we must also work hard on mathematical model research. If we want to consciously promote the increase of step length and the reduction of single-step time, it must actually damage the continuity of running power and the force of each link, which will have a negative impact on the human body's running speed. In fact, for sprinters, their running speed will be mainly affected by the relaxation ability of high-speed running and high-speed swing ability. Therefore, in future related research, we should pay attention to the kinematic parameters that reflect the human body's high-speed swing ability, and conduct in-depth exploration around it to be more scientific and systematic."

Randy listened below and nodded, "Do you want to run the whole person as a whole machine? This point of view is interesting. Right, old man."

As he was talking, he saw Ralph Mann fall into deep thought.

Randy next to her was ignored.

Because Su Shen's statement provided him with a new idea. Indeed, everyone is paying too much attention to the simple research on strides, strides, and speeds. In fact, I forgot that the body is a whole and the most sophisticated instrument in the world. If we study as a whole, can we find more paths and methods in the future?

"Look at my side again. Bolt supports the knee corners of his legs and knees at the moment of the Olympics landing and vertical stages. In fact, we can clearly see that due to physical fitness and performance, the shooting in the finals was obviously different from the data in the 40-50 meters. Compared with the data collected by the championship system, the data was offset by 10-50 meters respectively."

"This shows that I still lack the stability of my detachment."

"And this problem can actually be optimized with a new technical concept."

New technology?

When everyone heard that this was inspiration, they looked at Su Shen, and little stars almost popped up in their eyes.

Even Randy was stunned.

It was clearly a summary analysis meeting, but why did it become a direct conclusion and introduce new technologies?

You're doing this.

In the future, we will be under a lot of pressure and it will be difficult to deal with as coaches in the team.

Su Shen inserted his own PPT and waited for the computer to start reading the USB flash drive, and said, "That's it."

"In the future, we will allow a group of people with conditions to start training and enhance their ability to run and dig the ground on the way."

At this time, on the big screen, there were a few big words written——

Optimized version of "credit card" landing technology.

PS: This type of chapter is not easy to write, hahahaha, it is very slow to write, but I believe that in this way, the realism can explode. And taking the opportunity to improve and launch new technologies is natural~~~~
Chapter completed!