The Su God of the Reopening of the Sports Arena

Chapter 2251 Transformation Breakthrough! Step 7 of God

Chapter 2251 Transformation Breakthrough! The Seventh Step of God
Lausanne Stadium.

The key to a breakthrough transformation step is——

Coordinate millisecond timescale force vector transformations with small spatial scale muscle deformations.

Start the conversion to accelerate the golden sequence degree of that step.

That’s the theoretical solution.

Any conversion is a very important situation.

Just like starting from this angle alone, there are countless entry points and technical supports.

That's because it is a point from a static state to a dynamic state.

If this step is not done well, the entire startup speed will not be able to increase, and your speed will definitely not be high.

The same is true now that we are entering the acceleration position from the start.

This switching point.

It is also difficult to control.

Because this is also a transition from one form to another.

This involves a problem of conversion, switching and transition.

In terms of posture energy and technique.

They are all difficult points.

So how do you make this transition?
It became the key among the keys.

It is also the focus of research by countless people.

Ralph Mann proposed a theory similar to the golden sequence.

But unfortunately, this theory was never truly fulfilled until his death.

Only some theories remain.

It's just a theory.

But now Su Shen and he have the opportunity to unite early, one using his own experience and knowledge, and the other using the absolute answer that is one step ahead in the future.

Combine this step to complete what was not completed before.

This is what reopeners are all about.

Using future advanced roads to feed back into the present will allow this world-class sports science to reach its limits sooner.

Allow those bright minds to access the correct answers earlier.

New sparks burst forth.

……

"Su, what do you think should be done with this joint?"

Ralph Mann was having a heated discussion with Su Shen.

Because it is purely theoretical research.

Randy.

They are far inferior to him.

Randy is better at applying theory to actual combat.

Of course this does not mean that Randy’s theoretical level is not good, it is just compared with the creators of various theories.

There is still a gap.

Therefore, he is actually the person who best understands Su Shen's theoretical and scientific research capabilities.

Not Randy.

On the contrary, he is one of the people who has made the greatest contribution to contemporary track and field theory, and one of the core founders of future track and field theory...

His name is Ralph Mann.

The stronger a person is, the more he can understand Su Shen's theoretical power.

It’s like the stronger a person is, the more they can feel Bolt’s terror.

Otherwise the gap is too big.

You just think he is awesome, but you can't truly feel how awesome he is.

"I think it should be the change of the hip joint." Su Shen also sat down and discussed with him seriously: "I feel that 95° flexion makes the gluteus maximus force arm form a 22° angle with the long axis of the femur, which produces a horizontal "bending effect" under the action of vertical force, similar to the role of the "second fulcrum" in the lever principle."

“This may be a solution.”

"95 degrees? 22 degrees?"

Ralph Mann thought seriously.

At the same time, he drew with a pen on the paper at hand.

Suddenly his eyes lit up.

People of their level would never get so frightened by a simple statement without verifying it.

It’s okay to be shocked, but you must think about it and verify it yourself.

This is the difference.

"Breaking effect? The second fulcrum?"

"Okay, okay, why didn't I think of this? It can actually be solved this way???"

"What a genius idea. What a genius idea."

Su Shen knew it very well. Of course, it would be easy to look back and see the correct answer to many things, but if you want to choose the correct answer from the confusing position, it requires a lot of calculations and confusion, and consumes a lot of cost.

I don’t know how many years it will take just to find this direction.

Standing on the shoulders of giants and looking back.

It really made this difficult problem much easier in an instant.

But if you just think about it yourself.

Just thinking of these few points and combining them with this technology will probably cost you a lot of brain cells.

"What about the knee joint?" Ralph Mann continued.

He was very clear about these problems and it was too difficult to solve them on his own.

He is now very eager to get the answer and proceed to the next step of deduction.

Otherwise he felt that he was getting older.

I am afraid that I don’t have time to do research on these theories.

After all, practice is fair to both depression and a person.

As he grew older, his urgency for various theoretical innovations became more and more urgent.

"I think that the 150° extension makes the force direction of the quadriceps close to the femoral axis, which can reduce the vector loss in the force transmission process."

Ralph Mann continued to draw something on the paper in front of him.

"But if we do this, Sue, the problem with the ankle joint won't be solved, right?"

"This will cause a hyperextension effect."

As expected of Ralph Mann, the questions he asked were almost all on the key points.

But Su Shen continued calmly: "Then change the ankle joint."

"45° plantar flexion forms an oblique support structure for pushing off the ground."

“Allow the GRF vector to be transmitted along the long axis of the calf to avoid lateral moment imbalance in the knee joint.”

"That's good."

"Slant brace?"

Ralph Mann continued to draw and write on his name paper with a pen.

There are still words in his mouth:
"The traditional lateral torque at 42° is about 15N·m, which is reduced to 8N·m after optimization..."

"Shet!"

"Su, it seems like it really can work. You, you are such a monster!"

"How could you possibly think of this? Sometimes I really want to cut your brain open and dissect it."

Although it is a compliment.

But it sounds kind of gothic and dark.

"We have solved one problem here, but there are still many more to be solved. Sigh, sometimes I really wish there were more geniuses like you. This would be the greatest benefit to the field of sports research."

"It's okay, we'll solve it together today."

Su Shen said that if he had not been afraid that he had taken out too much at once and that it did not match his current exercise progress and would look a bit weird, he would have "cashed out" all of it long ago.

"How do we solve this problem? What about the timing effect? This alone is hard to solve."

Randy ticked the question asked by Su Shen just now, but looking at the form on the other side, there were still many items that were not ticked.

Only when all technical difficulties are overcome can a new theoretical foundation be formed.

Otherwise, there is no way to apply it in actual combat.

"I have a solution."

As soon as Ralph Mann finished speaking, Su Shen spoke:

"Do a wave-like stack of three-joint push-ups."

ha?
"No, I'm old, Sue, can you say that again?"

Old Man was completely confused by this long continuous word.

"In traditional techniques, the hip, knee and ankle joints extend synchronously, resulting in a single-peaked GRF curve. My idea is that the technique adopts a stepped extension sequence."

"You say." Ralphman stopped writing and listened.

When people like him are doing research, they will not stop writing unless it is Su Shen or even Randy talking to him.

"Hip joint: reaches peak extension angular velocity of 80°/s 450ms before liftoff, generating initial horizontal thrust."

"Knee joint: Start rapid extension 50ms before leaving the ground with an angular velocity of 600°/s, and superimpose a second wave of thrust."

"Hmm." Ralph Mann stared at it and tapped the table lightly with the tip of his pen.

It looks just like our school days.

"But there are still some key shortcomings in this approach, and the amplitude is not enough, and there is no way to solve the hyperextension effect."

"Don't worry, the key is the same as before. I think it's on the ankle joint."

Su Shen even started writing on the scrap paper in front of him -

Plantar flexion occurs 20ms before liftoff, with an angular velocity of 800°/s, forming the third wave of thrust.

This timing difference makes the GRF curve show a "three-peak superposition" feature, and the total impulse increases by 12%.

"Where are the computational models, Sue?" Ralphman asked.

These people can't do it without detailed processes and data models.

Of course Su Shen knew this.

What kind of words should you say to the right people? It's really too much to say these key things to athletes. You'll feel drowsy after hearing them too much. But with people like this...

You have to tell the real thing.

The more complete the better.

Su Shen writes like a god.

He continued to write:

The calculation model is as follows:

假设单关节冲量分别为Ih=150N·s，Ik=200N·s，Ia=250N·s，同步蹬伸总冲量I=150+200+250=600N·s。

阶梯式蹬伸时，考虑时间重叠效应，实际总冲量I'=150+200×0.8+250×0.6=150+160+150=460N·s？

There is a contradiction here, which needs to be corrected to integral calculation.

The area under the piecewise linear force-time curve. Assume that the force-time curve of each joint is a triangle with durations of 80ms, 50ms, and 20ms respectively.

The peak forces are 1200N, 1800N and 2400N respectively.

则同步蹬伸总冲量为0.5×(1200×0.08 + 1800×0.05 + 2400×0.02)=0.5×(96+90+48)=117N·s。

那么阶梯式蹬伸时，髋关节先发力80ms，膝关节在30ms后介入与髋关节重叠20ms，踝关节在60ms后介入膝关节重叠10ms，则最终的总冲量为0.5×1200×0.08 + 0.5×1800×0.05 + 0.5×2400×0.02 +重叠部分（0.5×(1200+1800)×0.02 + 0.5×(1800+2400)×0.01）=48+45+24 +(30+21)=168N·s……

So finally...

The theoretical improvement is 43.6%, which is closer to the actual data.

Well.

Ralph Mann, after seeing these dense calculations, did not have any headache, but immediately picked up his pen to verify.

There are also the clacking sounds of various pens being put down.

Su Shen did not say anything at this time and asked Ralph Mann to conduct personal verification.

To convince such people, it is useless to rely on some simple theories and empty talk.

There needs to be some detailed information so that he can verify it himself.

Just let him be convinced.

Even in this respect, he is more difficult to deal with than Randy.

But for myself, after all, I am an athlete and I have not retired yet, so I still have to focus a lot of energy on sports. So in order to find the right direction of the theory and come up with the right answer, someone needs to concentrate on it and make various improvements.

this person.

Ralph Mann, of course.

We can even say that we are now looking at the world.

There is no second person more suitable than him.

So we have to make him convinced first.

Only then can you devote your whole heart.

"What about stiffness tuning, Sue?"

Ralph Mann was completely in shape at this time.

When he asked this question, he didn't even look up at Su Shen, he was concentrating on the calculation. "The relationship between muscle stiffness (k) and contraction velocity (v) follows the modified model of the Hill equation as follows."

Su Shen didn't say anything more. He also picked up the pen to revise the new model and continued:
"K0 is the resting stiffness of 80N/mm, and v0 is the characteristic velocity of 2m/s. In the seventh step, the muscle shortening speed increases from 0.72m/s in the fourth step to 0.85m/s. According to the model, the stiffness is calculated, and finally it can be concluded that..."

"114N."

“This is consistent with the measured value of 110N/mm.”

"The increase in stiffness increases the resonant frequency of the MTU (f=√(k/m), where m is the muscle mass) from 12Hz in the fourth step to 15Hz, forming a nonlinear resonance effect with the stretching frequency, and increasing the energy transfer efficiency by 11%."

"What about reflex control?" Ralph Mann continued to ask.

The two men were like masters of swordsmanship.

A battle between you and me.

It’s just that they are now using scientific research data as a weapon.

Back and forth.

The fight was brilliant.

It just looks like...

It's like listening to a divine book.

I don't know what they are doing.

"Closed-loop feedback from vestibular-proprioceptive perception."

Su Shen replied:
“Changes in head posture, such as the trunk leaning forward 60 degrees in step , trigger the dual-path regulation of the vestibular-spinal reflex.”

"The utricle detects the acceleration of the head leaning forward and activates the trunk flexors through the medial vestibular nucleus. The EMG amplitude of the rectus abdominis increases to 400 μV, generating a forward flexion moment to resist the backward leaning tendency."

"The horizontal semicircular canal senses lateral angular velocity and activates the tibialis anterior muscle through the lateral vestibular nucleus, activating 40ms in advance to generate an inversion torque to counteract lateral deviation."

“This dual-channel control keeps the head position error within ±1.5° and the trunk posture fluctuation within ±2°, ensuring the stability of the GRF vector direction.”

Clap clap clap.

Ralph Mann verified the author's work and made his own judgment almost simultaneously. Of course, you can tell from the speed at which he wrote and the expression on his face that he was becoming more and more excited.

This kind of excitement would be great if you were not a scientific researcher working in this industry.

You have no idea what he's so excited about.

But Su Shen knew.

Especially for those who have devoted most of their lives to sports.

A person who has spent most of his life studying sports.

It's like discovering a golden treasure.

That feeling is——

Couldn't stop at all.

"What about the extreme adaptation of energy metabolism?"

Ralph Mandau.

"Spatiotemporal targeted release of phosphagen system."

Su Shen answered fluently.

"At the seventh limit, the energy supply needs to meet the dual requirements of high power output of at least more than about 2108W and low energy loss. Technology can be used to achieve this goal through spatial heterogeneous activation of the phosphagen system."

"For example, type IIb muscle fibers in the quadriceps femoris are distributed regionally, and their motor unit threshold is positively correlated with the fiber diameter. By regulating the discharge frequency of motor neurons, the frequency is increased from 80 Hz in the first step to 120 Hz, achieving threshold-crossing recruitment."

"What about the energy transfer problem?" Ralph Mann asked.

"Using the sarcomere-tendon relay model of energy transfer."

Su Shen also continued.

"The ATP produced by the phosphagen system needs to be transferred to the tendon attachment point through the creatine kinase system in the sarcomere. This process involves energy gradient loss, with about 1% energy lost for every 5 μm of distance transferred. So I want the seventh-step conversion technology to optimize the sarcomere arrangement direction and reduce the angle with the long axis of the tendon from 15° to 8°, shortening the energy transfer path by 12% and reducing the loss rate from 22% to 13%."

"Is this... feasible? Lowering it so much?"

"feasible."

Su Shen also continued to write——

原本我们的技术：传递距离L=100μm，损耗率=1-(0.95)^(100/1)=≈99.5%。

This is obviously wrong, it should be an exponential decay model.

The loss rate = 1 - e^(-L/λ), where λ is the characteristic distance. Assuming λ=20μm, the loss rate = 1 - e^(-5)=0.993, or 99.3%, which is still unreasonable.

This indicates that the model needs to be corrected to linear loss, with a 10% loss for every 5μm, and a 100% loss for 50μm.

Then the new relay model is:
The transmission distance L = 88μm, the loss rate = 44%, and the energy utilization rate increased from 50% to 56%.

The corresponding effective ATP supply increased by 12%.

"So this is possible. Then...what about the mathematical modeling and critical condition derivation of vector coupling?"

In fact, Zhou Bing and his companions just happened to come to find Su Shen at this time, because Yu Weili wanted to discuss some matters in Moscow with Su Shen.

Come in and listen.

All numb.

"This... Pancake Brother, what are you talking about?"

“Why do I feel like I don’t understand a single word?”

Zhou Bing and Xie Zhengye were followed by a few young athletes.

They were even more shocked by the scene.

nonsense.

Don’t say you don’t understand, we don’t understand either.

But of course you can't say that.

After all, you have to establish your image as a senior in front of your juniors.

"Well, this is something you will come into contact with in the future. It's too early for you to come into contact with it now, so don't think about it."

Ah.

Pancake brother is ok.

Xie Zhengye even cast a rare look of admiration at him.

Because he faced this problem.

I don’t know how to answer that either.

It really makes my head hurt just by listening to it.

It feels like no amount of brain cells are enough.

At this time, Su Shen and Ralph Mann didn't notice anyone coming in at all. The two of them were completely immersed in the discussion of scientific research.

“Establish the dynamic equation for the seventh step extension phase and combine the coupling relationship between vertical force and horizontal force.”

"This is the center of mass equation of motion."

“这是这一段的能量守恒方程式，其中能量损耗Eloss包括肌肉内部摩擦η1=15%、肌腱粘弹性损耗η2=11%、空气阻力做功η3=8%，总损耗率η=η1+η2+η3=34%。”

"Yes, indeed both are possible."

Ralph Mann was completely dizzy.

At his age.

What substance? What beauty?
He can't get ahead at all.

Only what he has been pursuing all his life.

That is real true love.

Believe in older men.

Everyone will agree with this point.

I fully understand.

"So……"

"So what are the conditions for a critical breakthrough?"

This.

Ralph Mann was also a little nervous.

Because it's like the finishing touch.

If so many parts have been in place and verified successfully, but it is blocked at the last step, even if it is already in the support area, it is inevitable that people will feel regretful.

But Su Shen just smiled slightly.

Then he fluently said what Ralph Mann wanted to hear.

Actual Fd=0.5×ρ×v×A×Cd.

Take ρ=1.225kg/m, A=0.3m, Cd=1.0, v=10m/s.

Fd=0.5×1.225×100×0.3×1=18.375N。

It is negligible compared with the horizontal muscle force of 1845N.

So……

You can find out from here.

"What can you find out, Pancake Brother, do you know?"

The young athletes are already looking forward to it.

There is clearly no sword energy here.

But he could already feel the whole room filled with sword energy.

I'm dizzy.

How would I know that all the things they said gave me a headache?

This is beyond my understanding.

"Ahem, listen carefully, and you will know."

Ralph Mann was the first to react.

He spoke immediately and looked up at Su Shen.

"No way, it's not air resistance???"

"The key to this breakthrough is not air resistance???"

Ralph Mann has always believed that the key turning point in this research is air resistance.

did not expect.

Su Shen wrote out some detailed processes and steps to consider.

It completely opened a new door for him.

"Yes, Ralph, it's not air resistance."

"According to my calculations."

“The bottleneck of the seventh step limit breakthrough mainly comes from the limit of muscle force.”

"It's not a matter of air resistance."

“It’s about the runner himself.”

Ralph Mann suddenly felt that Conan was possessed.

A flash of lightning flashed through my mind.

"Shet."

"damn it."

"You boy."

“That’s awesome.”

"Awesome plus awesome."

The young athlete next to him asked:

"Brother Pancake, what's this not about air resistance, but the limit of muscle force?"

"Ask this and that. Don't you understand an old saying?"

"Read a book a hundred times and its meaning will become clear. I will bring these things to you when the time comes. You can read them yourself. Read them several times and we will talk about it when the time comes."

Zhou Bing listened.

Looks a little impatient.

But in fact, he himself was also shocked by this sentence.

Turn around and look at Xie Zhengye next to you.

It seems to be the same.

In this very office.

It was as if they had heard the new Bible of sprinting.

In the past, I only felt how awesome certain theories were from books.

I am standing here now, witnessing it all.

Suddenly there was a huge historical torrent.

It runs through two people.

It’s like suddenly hearing about a mysterious breakthrough method in the world of martial arts.