Ersha Island.

Because Su Shen had to directly integrate his upper body into the existing land cutting system this time, he needed to spend more time.

Otherwise, it's already time to start formal adaptive high-speed training.

But that's big for Randy and Ralph. Mann, it's a new topic.

Because they don't understand how to integrate these perfectly, remember that it is a perfect fit, not a rigid one, the kind of pinching that can only have the opposite effect. Although they read these things written by Su Shen, they instantly understood the feasibility of this, but how to do the best, how to do the most reasonable, where is the scientific data, this is not easy.

There are no ready-made examples.

Su Shen began to have in-depth exchanges with them, which is part of the real scientific type, which requires the use of a lot of biomechanical and physical formulas.

……

"Landing support can be divided into three stages: forward pedal, vertical and backward pedal, we all know the forward pedal process, the support point of the foot is in front of the projection point of the body's center of mass, and the ground plays a deceleration role in the force of the person. How can you get the biggest "braking point" and the biggest "push point"? So let's make a calculation, if the front support hits the ground and cushions, and the toes fall 7cm in front of the projection point of the body's center of mass, the maximum "braking" phenomenon will occur. ”

"The toe falls 7 cm in front of the projection point of the center of mass of the body?" This is Ralph. Mann was in the main field, and he immediately asked, "Why 7cm?" Do you have any basis for this? Sue? ”

These people are real industry experts and professors, and they can't just pull a few tiger skins to be a big banner.

Without truly scientific theories and calculation formulas, I am afraid that they will not be able to convince them.

"Because of the backpedal process, the support point of the foot is behind the projection point of the body's center of mass." Su Shen said: "At this time, the earth has an accelerating effect on the force of people. And because the force of the ground on the person is the main driving force for the human body to run forward, we can calculate that the speed of the center of mass of the person in the running is ——————the speed of the person running, and the speed of the person relative to the ground, which is regarded as the implicated speed, and the heart is to the ground with v1, and the direction is approximately forward. When the athlete presses the thigh and stretches the calf and drives the calf and foot to the ground during the run, the velocity of the foot relative to the center of the human body is regarded as the relative velocity, and the foot is centered on the center of the foot with v2 in the direction of the backward and downward ......"

"Well, according to the principles of mechanics, it should be so." Su Shen quickly wrote on the paper: "Absolute velocity v3 feet to the ground = v1 + v2. ”

"And because the general forward velocity of the center of mass v1 center to the ground is greater than the speed of the foot backward and downward and the speed v2 foot to the center, the direction of the v3 foot to the ground is generally forward and downward."

"Since the V3 direction is generally forward and downward, the velocity direction of the V2 foot to the center and the V1 center to the ground should be at an angle of much greater than 90 degrees. Therefore, the size of the V3 foot to the ground is generally much smaller than the speed and direction of the V1 heart to the ground. Therefore, the speed of the foot to the ground is less than when there is no ground picking. Since the speed of the foot to the ground is smaller than that without the ground picking, when the forward pedal is cushioned, the forward pedal resistance of the interaction between the foot and the ground is small due to the ground-grabbing action, which is equivalent to adding an additional driving power. That's what we're doing right now, but if ......"

"What about adding an upper limb chain link to the underground limb chain?"

"From the analysis of human dynamics, when the front support of the foot hits the ground, the force on the human body has gravity g, the elastic force n of the ground to the foot, the friction f of the ground to the foot and the resistance of the air to the body f, o is the point of action of the ground to the foot, c is the center of gravity, b is the point of action of the resistance of the air to the body, the human body is only affected by the friction f of the ground to the foot f and the resistance f of the air to the body in the horizontal direction, and the resistance f of the air to the body is small. That is, the extra shoulders, elbows, and arms, is it possible to make the speed of the foot to the ground, that is, when the v3 is small, the forward pedal resistance, that is, the friction f of the ground on the foot, will also be smaller? ”

"Go on, Sue." Ralph. Mann has come to understand that he is worthy of being an expert in mechanics in this area.

"Then at this time, the land will be more 'sufficient'."

"According to the momentum theorem, the loss of speed in the horizontal direction of the human body is the reduction of deceleration."

"The impetus for landing, at that moment, will also increase accordingly."

In the same way, in this way, V3, the forward pedal resistance is also smaller, is it to further reduce or even eliminate the "braking" phenomenon in the landing process? ”

"The following is a link diagram of my new ground chain, which is connected up and down, and the formula and calculation process are as follows......"

Su Shen quickly wrote, dense calculations, began to appear in front of the eyes of the two people, the most terrifying thing is, Ralph. Mann actually ...... in the process of verification.

Nothing was found.

God, this guy isn't going to fit Jesus' head on athletics.

Otherwise, how could this be?

It's horrible.

Gu rancid

Alone.

He was able to optimize a technical project that required a large team and a lot of time to demonstrate and validate it on his own.

It's all there.

Ralph. Man looked at it, and it took less than an hour in total.

This......

Ralph. Man is a scientific research athlete, and he has never really admired anyone in this aspect in his life, but this time, he has to admire. Because Su Shen told him with the facts, what he thought was impossible before, and now ......

It's all possible.

"Genius idea. Genius design. Genius arguments. "Ralph. Man said three "genius-like" in a row, which is enough to reflect the state of mind and mentality of this expert professor of biomechanics in the United States at this moment.

The essential......

He was not yet eighteen years old.

It's horrible.

"Professor Ralph? Professor Ralph? Are you listening to me? Su Shen shouted a few times and saw Ralph. Man didn't react, so he had to push the latter with his hand.

"I said, old man, why are you distracted. Is it old and lacking energy? Randy teased.

"You know what." Ralph. Man said angrily: "You are not a person in the field of biomechanics, you don't know what this thing Su means, if this thing is sent out, it is likely to promote the technological innovation and new development of the entire track and field world." ”

"Give me a few weeks, no, give me a few days, I will definitely complete the preliminary verification, and if you want to send this paper at that time, I will definitely help you sign it, no, I can help you write an introduction." Ralph. Man rarely loses his temper, but this time, he really lost his temper.

In the end, such a person has exceeded his expectations by too much.

If the tolerance value is exceeded, it is naturally impossible to remain calm anymore.

"But how long will it take you to put these theories into practice?" Randy raised his concerns.

After all, theory is theory, practice is practice, is there any experience to follow, and the remaining half of the winter training, is there enough time?

Su Shen nodded, with a calm look on his face, and said, "Don't worry, no problem, the rest of the practice is enough." ”

"I'll be able to understand the whole technical move before the end of the winter training."

"By the way, Coach Randy, my diamond squat seems to have a bit of a movement pattern that needs to be corrected, and you can help me analyze it with the equipment when the time comes."

"Also, my future 30~40 meters optimization plan, detailed for improvement, also according to the last time said good."

"I have time left to do this."

Randy:......

Ralph. Long:......

God, is this guy as easy to eat as he is to eat a hamburger?

Listening to Su Shen talk about the back, the two of them were already completely messy.

ps: Here comes the old irons, and there are more, and they will arrive at the battlefield in five seconds~~~~

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