The Su God of the Reopening of the Sports Arena

Chapter 2193 The foundation is laid, it’s time to build the house

Chapter 2193 The foundation is laid, it’s time to build the house
Su Shen is in the middle.

Feeling the wind behind you.

But it doesn’t feel like it’s particularly big today.

But that’s okay.

The wind speed thing.

There is no way to master it.

The most you can do is control the wind when it's particularly windy.

The rest of the time, forget it.

This is not something ordinary people can do.

If you can do all of this, you are not just sprinting, you are practicing Taoism.

What will the weather be like? No need to think too much.

Su Shen’s current mentality is——

No matter what wind you give me.

No matter what conditions you give me.

I always try to adjust my state as much as possible.

I will try my best to achieve my goals.

It is best if external forces can support you.

It’s best to be able to give yourself the best conditions.

But if you can't give it to yourself.

That doesn't matter either.

This shot.

He has to do what he has to do.

No matter what the wind is like with this shot.

Unconsciously.

Su Shen also grew in this life.

The same became.

It's something I've never thought about before.

His mentality.

It has slowly moved towards a stronger direction.

It could be himself.

Nothing I expected.

Not by anything.

Any external force.

Any emotion.

change.

"The bent-arm start is ready. We can see that Su Shen, Zhao Haohuan, Zhou Bing, Xie Zhengye and others are all ready."

“This is the bent-arm start, a specialty of Ersha Island.”

"With this starting technique, my starting ability will be changed from two-wheel drive to one."

“Of course any technology requires adaptation.”

“Just the startup aspect alone doesn’t necessarily make the entire process faster.”

“Everyone must understand this.”

"So it doesn't matter if you don't master this starting technique, sprinting is a systematic and holistic technical thing."

“Everyone can just find what suits them.”

At this time, the electronic command rang.

"Everyone take your place."

Su Shen bent his arms at a certain angle.

This bent-arm position helps reduce wind resistance and makes the arm swing more efficient.

When the arm is bent, its length forms a certain proportional relationship with the body as a whole, and this proportion may be related to the golden ratio.

Later, during the starting process, the swing of the arms is coordinated with the leg movements.

The frequency and amplitude of arm swing will affect the body's balance and forward momentum.

Reasonable arm swing can utilize the body's rotational inertia to convert the arm's kinetic energy into forward propulsion for the body.

"preparation."

Su Shen's biceps, triceps and other related muscles are in the best state of contraction, so that they can generate maximum force and drive their arms to swing quickly.

At the same time, this proportion also makes the center of gravity of the arm more reasonable, which is conducive to the starting balance and stability of the body.

Zhou Bing and Xie Zhengye also started with bent arms.

In terms of body posture, the runner should start in a crouching position, with the body leaning forward and the center of gravity placed on the front foot to obtain greater forward momentum.

The leg push is the power source for starting a run, and the powerful leg muscle contraction propels the body forward.

Arm swinging coordinates with leg movements to maintain body balance and help increase forward propulsion.

Although they are all bent arms.

But take a closer look.

Still different.

Not to mention Su Shen.

Both of them are a little different from Zhao Haohuan.

This is because if anything, they are in this bent arm mode now.

It's more like a textbook model.

It's more like a rigid model.

It's more like a model of following suit that has just been learned.

Relative to them.

Zhao Haohuan has made many modifications.

I have been personalizing my experience summarized during the training process during so many years of competition.

Start making fine adjustments based on your own physiological structure and physiological conditions.

But these two people.

It's obviously the feeling of just getting started.

This feels like it.

High school students are just learning to write essays.

Although your writing seems to be very beautiful and your vocabulary is very gorgeous, and even your use of many structures and sentence patterns is better than that of so-called famous writers.

but.

If you read carefully.

It just feels a little awkward.

I just feel like I can't get into it.

And those mature and famous writers read his articles more naturally and comfortably, even if they use fewer words.

It doesn't look that gorgeous and eye-catching.

Read it several times and you will unconsciously choose this one.

Because they have formed their own style, the so-called words, sentences and writing methods all serve their own style and ideas.

The former one still remains at the simple sentence structure.

Still staying on the surface of splendor.

So at first glance it seems good.

But it's not worth reading at all.

But if you say it is not standard.

That's certainly standard.

It’s just that it’s too standard and I haven’t formed my own personal style yet.

I haven't fully mastered this system and technology yet.

Su Shen not only wants to adopt the golden ratio effect here, but also wants to add something new.

This is also the new concept of this game.

The last shot warmed up and I did the golden ratio of the bent-arm start.

So now we have to build on this foundation.

Add new things.

Just like building a house, laying the foundation is the first step.

It's not finished.

It's not over yet.

Now that the warm-up is complete, it's time to move on to the next step.

Rely on the golden ratio effect to optimize the moment of inertia.

it means--

According to the principles of sports biomechanics, moment of inertia is a physical quantity that describes the magnitude of an object's rotational inertia.

During the bent-arm start, the moment of inertia of the arms has an important effect on the rotation and forward propulsion of the body.

When the arm is bent to a specific angle so that the length of the arm forms a golden ratio with the overall body, the arm's moment of inertia reaches an optimized state.

At this time, under the same muscle force conditions, the arms can generate greater angular acceleration, thereby driving the body to rotate faster and increasing the forward momentum at the start.

Assuming the arm can be regarded as a rigid body,
When the arm bending angle changes, the equivalent length l changes. Through mathematical calculations and experimental verification, it can be found that when the arm is bent to the angle corresponding to the golden ratio, under the action of the torque generated by the given muscle contraction force, the angular acceleration reaches the maximum value, making the arm swing faster and more powerful, pushing the body forward to accelerate. This is because the force characteristics of human muscles are closely related to the moment of inertia.

The force that muscles can generate when contracting is limited, and their efficiency is affected by many factors.

When the arm's moment of inertia is within an appropriate range, the muscles can exert their force more effectively and generate greater angular acceleration.

The arm bending angle and posture corresponding to the golden ratio may make factors such as the muscle force point, lever arm and contraction direction of muscle fibers reach an optimized combination state.

In this state, the muscles can generate maximum torque with minimal energy consumption, thereby improving the efficiency and speed of arm swing and providing stronger power for starting.

According to the law of rotation M = Iα, where M is the resultant external torque and α is the angular acceleration, the torque generated by muscle force needs to overcome the rotational inertia in order to make the limbs produce angular acceleration.

When the moment of inertia increases, to achieve the same angular acceleration, the muscles need to generate a greater torque, that is, they need to exert a greater force.

For example, when doing arm flexion and extension exercises while holding a heavy object, the heavy object increases the rotational inertia of the arm rotation system, and the muscles need to work harder to complete the movement.

The interaction between muscle contraction pattern and rotational inertia.

Different muscle contraction methods behave differently when faced with different moments of inertia.

In isometric contraction, muscles produce tension against a fixed moment of inertia, such as when holding the arm still to lift a heavy object. The muscles continue to exert force to balance the gravitational torque and moment of inertia.

During isotonic contraction, muscles overcome rotational inertia to cause limb displacement. Rotational inertia affects the speed and force output of muscle contraction.

During eccentric contraction, muscles work against rotational inertia as they are stretched. For example, when lowering a weight, the muscles need to control the speed at which the weight falls. The greater the moment of inertia, the greater the load on the muscle's eccentric contraction.

As muscles continue to exert force, they will gradually fatigue and their force characteristics will change. When the moment of inertia is large, muscles need to continuously output greater force and are more prone to fatigue. Muscle fatigue will lead to a decrease in muscle contraction ability, which is manifested as a decrease in the torque generated and difficulty in maintaining the original angular acceleration, thus affecting the continuity and effect of exercise.

This is the stage-by-stage display of basic rotational inertia in motion.

How to study it then?

In this era, not many people study this.

Because this is a topic for the next decade.

These have not been touched upon in the past decade.

To do research, you must have a model.

It is a mathematical model.

Based on Newtonian mechanics and muscle contraction theory, a dynamic model can be established to describe the relationship between muscle torque, moment of inertia and angular acceleration.

It is like simplifying the muscle into a linear or nonlinear spring-damper model, combining it with the calculation formula of the moment of inertia, and using differential equations to describe the muscle force generation process and the movement state of the limbs under different moments of inertia.

By adjusting and solving the parameters of the model, the interaction between muscle force and rotational inertia under different movement conditions can be simulated.

But these are all easy for Su Shen.

Be methodical.

Not just models.

Su Shen's experiment also studies the use of a variety of advanced technologies to measure parameters related to muscle force and moment of inertia.

For example, a surface electromyograph is used to record the electrical activity of muscles, and the muscle force level and fatigue degree are evaluated by analyzing the amplitude, frequency and other characteristics of the electromyographic signal.

For example, a three-dimensional motion capture system is used to accurately measure the movement trajectory and angle changes of the limbs, and force sensors are used to measure the force generated by the muscles to calculate the muscle torque.

For example, the measurement of moment of inertia can be achieved through an inertial measurement unit or a calculation method based on kinematic data. By controlling the experimental conditions, changing the moment of inertia, observing the changes in muscle force characteristics, and collecting experimental data for statistical analysis.

These are all first-hand data of this era.

No one has figured out how to play it yet.

Su Shen is already on the fast track.

No one was on the expressway.

Press the accelerator to the bottom.

Speeding all the way.

Saying.

No feeling of traffic jam.

really good.

The final experimental results were similar to what Su Shen expected. The experimental results showed that as the moment of inertia increased, the electrical activity of the muscles increased, the force time was prolonged, and the area under the force-time curve increased, indicating that the muscles needed to consume more energy to overcome the moment of inertia.

At the same time, muscle fatigue occurs earlier and the degree of fatigue increases.

In different movement modes, the relationship between muscle force characteristics and rotational inertia is also different. For example, in fast rotation and slow rotation, the muscle response to changes in rotational inertia is different.

With these, Su Shen has established a complete set of relevant research and experimental data systems.

Only then can special adjustments be carried out.

Here at Su Shen Laboratory.

The newcomers looked on.

My eyes straightened.

"Oh, damn, this is impossible. Is it so easy to solve the problem? Is it so easy to build a whole set of practical system from scratch?"

“Is it so simple that it can be directly used in the field of sports???”

"When did it become so easy to come up with experimental conclusions???"

Trial and error.

What about sunk costs?

Take a wrong turn.

The whole system is blocked.

No.

How do you play?

Just don't take the usual path, right?
Seeing the look in the eyes of the newcomers, some old employees said calmly: "Look, you are surprised by what you have seen before."

"Here we are."

“This is the speed of scientific research.”

"Boss Su often says that if I don't figure it out, I won't be able to do the experiment on myself."

"You see, in order for President Su to be able to use him on us, we must have a research speed that matches President Su's level."

"You'll get used to the spiciness slowly."

"But this speed..."

"Oh, how's the speed? This speed is already considered slow. I heard from the senior who came in earlier that Nike's laboratory has just come up with a theory, and President Su personally led the team and completed it in one month."

"That's an exaggeration. Haven't you seen that besides running, he also publishes various papers and leads the entire sports science community forward?"

"Learn more."

"This will be the norm from now on. If you are slow here, or your research progress is slow, you will be eliminated and despised."

Use it on yourself???

You are applying the newly researched things to yourself???
This is this.

Isn't this treating yourself as a guinea pig? ? ?

You must be kidding.

No way, no way???

why.

Is there such a crazy place?
Is there such a crazy person?

This is so crazy, why are these people...

And he acts as if it's a matter of course.

what……