After seven steps.

Su Shen has reached the absolute first one.

His speed is unimaginable.

Even most of the athletes on the scene have not been low, and there are even experts like Gatlin and Zhao Haohuan...

What they know.

The average shock is not enough to shake them.

Since it has shaken them.

It already explains...

This amazing meaning.

Not low anymore.

But this has just begun.

Su Shen chose this game as an important one for him, not just to complete a super start show.

What he has to do is to challenge his own limits.

So.

Acceleration zone.

Also not vague.

First of all, you need to understand some initial data roughly, and you will understand why Su Shen chose to make a breakthrough on the plateau.

At the same time, see how much Su Shen played on the plateau and how much is the difference from the theoretical value on the plateau?

The first is the starting speed. In a plateau environment, the starting speed may be faster. This is because the plateau air density is low. According to research, air resistance is roughly proportional to the air density. Starting in a plateau environment, the air resistance the body receives is reduced by about 10-20% compared to the plain environment.

The second is the current stage of acceleration stage speed improvement.

On the plateau, from the acceleration process, due to the increase in the proportion of anaerobic metabolism on the plateau, muscle explosive power can be better exerted during the starting acceleration stage.

Data show that during the acceleration of the first 10-30 meters after starting in a plateau environment, the athlete's speed may increase by 5-15% faster than the plain environment.

therefore.

How to exert this upper limit, or how to approach this upper limit, has become the most important thing at the moment.

Because physiological data will also change.

For example, heart rate changes. When starting a plateau short-term, the body will speed up blood circulation to provide sufficient energy to the muscles in order to combat the hypoxic environment.

The heart rate will rise sharply at the beginning of the start, and the heart rate may rise by about 10-30% faster than when starting from the plains.

For example, blood lactic acid accumulation, the accumulation of blood lactic acid after starting the plateau is faster and more than that of the plain. Because the proportion of anaerobic metabolism energy supply increases, the rate of lactic acid production is faster. Generally speaking, at the same time point after starting, the blood lactic acid concentration in the plateau environment may be 1.2-1.5 times higher than that in the plain environment.

With rough information, you can roughly know how much operational limit Su Shen wants to do.

The first thing to do is-

Swing the arm!

Because.

The air resistance of the plateau is small, and the swing arm can be appropriately increased to better drive the body forward.

Then this second sentence.

The amplitude of the swing arm can be increased appropriately.

It has strong operability.

What is the basic relationship between arm swing and running?

It is the movement of the arm swing to transmit force through the musculoskeletal system, thereby generating a boost to the horizontal displacement of the human body. When the arm swings, the muscles of the upper limbs contract and generate strength.

Taking the swinging arm swing backward as an example, this force is transmitted to the trunk through bone structures such as shoulder joints and clavicles.

According to Newton's third law, the effects of forces are mutual. When the arm swings backward to apply force to the trunk, the trunk will produce a forward reaction force. This reaction force will be transmitted to the ground through the pelvis and lower limbs, interacting with the ground. Due to the existence of friction, the ground will give the human body a forward friction force, thereby pushing the human body to move forward.

Then, if you understand these things, you will know what Su Shen is going to do now.

Why do it on the plateau?

Why not choose on the plain?

Because from the momentum theorem, the force generated by the swing arm acts on the human body over a period of time, causing the momentum of the human body to change in the horizontal direction, thereby promoting the horizontal displacement of the human body.

Then the air on the plateau is thin and the resistance is lower, making it easier to do this.

It is known that during running, the human body needs to keep moving forward in a straight line to achieve displacement efficiently. The swing arm helps coordinate the direction of the body's movement. If there is no swing arm movement or the swing arm is not coordinated, the body will easily shake left and right or twist during the advancement, causing the actual displacement direction of the human body to deviate from the expected direction.

That is to say, when the arm swinging movement can accurately match the leg movement, the body can better maintain movement on the sagittal plane... just like the paddle paddle when rowing.

The swinging arms are like oars on both sides of the body, and through coordinated movements, the body moves in a straight line.

This can reduce the energy waste during horizontal displacement in the corrective direction.

Then, now the arm swing can be more large and can maintain the coordinated direction of the body's movement.

These amplitudes cannot be achieved in plains.

This is not the end. Increased arm swing and other effects can also bring greater changes.

For example, vertical displacement is stable.

During the 100-meter sprint, stable vertical displacement helps athletes use energy more efficiently.

When an athlete runs, his energy source is mainly the chemical energy generated by muscle contraction converted into mechanical energy.

The stable vertical displacement can ensure that the force generated by the athlete's pushing ground can be more effectively converted into horizontal propulsion force.

If the vertical displacement is unstable, it is like a running posture with too much "jumping", which will cause excessive energy loss in the vertical direction.

For example, when an athlete jumps up too much, it consumes extra energy to overcome gravity and do work.

The stable vertical displacement allows energy to concentrate as much energy as possible to push the body forward, just like installing a more efficient "energy propeller" for the athlete's progress.

According to Newton's third law, when the foot pushes the ground, the ground produces a reaction force against the human body.

The stable vertical displacement can ensure that the vertical component of this reaction force will not be too large, so that the horizontal component can function more effectively and allow the athlete to move forward at a faster speed.

Then now is the time to do it.

Su Shen waved his arms hard.

At this time, the arm swinging power that was previously bound to be somewhat bound, finally found a breakthrough!

This chapter is not finished yet, please click on the next page to continue reading the exciting content later! On weekdays, you want to fully turn on the arm swing function, which is basically unrealistic because you also have to consider the overall balance.

Under the training conditions of the Great Plains, even if your upper limbs are strong, you can only be forced to seal a part of them.

Sacrifice for the whole.

But in the plateau area.

The situation is different.

In plateau areas, people's arm swing amplitude and frequency of arm swing can become larger.

Because the plateau air resistance is small, the swing arm amplitude can be appropriately increased!

You can better drive your body forward!

Su Shen’s upper limbs.

Through deliberate scientific development since childhood, he has long been the top one among active athletes.

Why do you say so? If the rest of the athletes develop upper limb strength, there will definitely be people with better talent for listing than those developed by Su Shen.

But.

In the minds of most people, sprinting is mainly about lower limbs.

Even in Europe and the United States, pay more attention to muscle mass.

Or focus more on the lower body development.

That is to say, when people do not pay much attention to upper body development.

Su Shen carried out the most scientific, standardized and maximum upper body development with a person.

Then he is not an active sprinter. Who is the one with the best upper limb strength?

No, that's all because of all the comprehensive and scientific training of Su Shen for so many years.

That is to look down on science.

With such an answer, you will know why Su Shen was wronged in the past training.

Because in plains.

There is no way to open up the upper limbs of these seals more.

It can only be converged for the sake of integrity.
To be continued...