Except for Su Shen.

The others ran well too.

This is the benefit of plateau places.

Just look at the display on the screen-

The fifth way is Zhang Peimeng.

Step-like starting: The distance between the front and rear legs is 1.3 times the shoulder width, forming a 56cm pedal and extension working distance.

This running method starts based on Zhang Peimeng's second gear.

When starting, stand with your feet in front and back, and the distance between the front and rear legs is relatively large, reaching about 1.3 times the width of the shoulders, about 56cm.

Such a spacing allows for relatively large pedal and working distance for the rear legs when starting.

Can provide greater forward momentum for the body.

Increasing the pedal and extension distance can give the leg muscles more room to exert force at the moment of starting, thereby increasing the initial speed of starting. At the same time, a larger front and rear leg spacing may help athletes better utilize the transfer of their body's center of gravity, transmit strength to the ground more effectively, and push their body forward.

Although it is still in the field of straight arm starting, there are also improvements based on their own technical characteristics.

For example, a conventional straight-arm squat start forms a stable and efficient force-exercise posture through the support of both feet on the starting machine. The body's center of gravity is low and the leg strength can be used to maximize the use of leg strength. The "straight-like starting" mainly relies on the large distance between the front and back feet on the ground to build a starting posture, and the body's center of gravity is relatively high.

Of course, there are advantages and disadvantages.

This starting method may make the body relatively poorly stable at the start moment, and the athletes need to have stronger core strength and balance ability to control their body posture.

In addition, if the distance between the front and rear legs is too large, it may affect the starting reaction speed and coordination of the movement.

If it were Zhang Peimeng in the past, it would be really hard to resist.

But now he.

After so many years of polishing.

Already have this state.

Have such ability.

According to his legs length and habits, he appropriately increased the front and rear spacing of the starting machine, which was slightly wider than when he was in a conventional squat-style starting to meet the larger front and rear legs spacing requirements.

The distance between the front starter and the rear starter is set at about 60-70 cm.

The angle between the front starter and the ground can be maintained at about 45°-50°, and the angle between the rear starter is around 65°-70°. This angle can provide a large pedal space and force transmission direction for the rear legs.

Step on the starting device with both feet, step on the front foot on the front foot and step on the rear foot on the rear foot. The distance between the front and rear foot is about 1.3 times the width of the shoulder, forming a larger spacing similar to "step-style starting".

Support the ground with both hands, shoulder-width or slightly wider as you are, straighten your arms, keep your back straight, your head sags naturally, and your eyes are about 1.5-2 meters ahead of the starting line. Lift your hips moderately, slightly higher than your shoulders, so that the angle between the thigh and the calves of the hind legs is about 130°-140°, and the angle between the thigh and the calves of the front legs is about 90°-100°.

After hearing the "preparation" command, the hips continue to lift up and the center of gravity moves forward. The weight of the body mainly falls on both hands and front legs. The flexion angle of the knee joint of the hind legs is reduced, further lengthening the leg muscles and preparing for force.

After the starting gun was fired, Zhang Peimeng quickly and vigorously kicked the starting device with his hind legs.

At the same time, the front legs also pushed the ground hard, pushing the body forward and rushing out.

I saw that during the pedal and stretching process, the hind legs should be fully extended to transmit the strength to the starting device through the soles of the feet, and use the reaction force of the starting device to push the body forward quickly.

Swing your arms actively and cooperate with leg movements to drive your body to accelerate forward.

The second-level starting mode is followed.

even.

Start trying new changes this year.

Starting from third gear.

This is the direction he has been training.

He tried it with a bent arm to start, and it was very difficult for him, not just to learn it.

It's better to start in the second-level position.

Make an upgrade again.

It is more in line with your own physiological curve.

Just like now.

According to Hukai and his team.

The new method developed is...

Stage 1, 0 - 0.1 second hip dominance.

Hu Kai told him that from a biomechanical perspective, the dominant role of the hip joint at the start moment is crucial. Research in Sushen Laboratory shows that in the initial stage of starting, the movement of the human body's center of gravity mainly depends on the movement of the hip joint.

At this time, the gluteus maximus, as the main hip extension group, generates powerful strength through centripetal contraction, so that the thighs can perform back-extension exercises at the hip joint. At the same time, hip flexor groups such as the iliopsoas muscle also work together to stabilize the pelvis and assist in exerting force.

This action can effectively transmit the energy stored in the core part of the human body to the lower limbs, providing the initial motivation for the start.

For example, in the study of the starting dynamics of sprinters, it was found that the angular acceleration of the hip joint was significantly higher than that of other joints in the starting 0-0.1 seconds, which directly led to the rapid advancement of the body's center of mass.

This is the advantageous conditions for acceleration.

The second stage.

0.1 - 0.2 seconds knee dominance.

When entering the 0.1-0.2 second stage, the knee joint becomes the key to acceleration.

During this period, Hu Kai said that the contraction of the quadriceps muscles was the main source of motivation.

The quadriceps muscles pull the patella by contracting, thereby stretching the calf at the knee joint, increasing the force between the legs and the ground.

Relevant muscle electrophysiology studies show that at this stage, the electromyography of the quadriceps femoris is significantly enhanced, indicating that it is exerting force quickly. At the same time, the hamstring muscle also plays an important synergistic role. It controls the extension speed of the knee joint during centrifugal contraction, ensuring the stability and efficiency of the movement.

In addition, the stretching of the knee joint can further extend the leg pushing distance.

According to the momentum theorem Ft = mv - mu, when the force action time t is certain, increasing the pushing distance means increasing the impact of force F on the human body, thereby allowing the human body to obtain greater momentum changes, that is, faster speed improvement.

The third stage.

Ankle dominance after 0.2 seconds.

This chapter is not finished yet, please click on the next page to continue reading the exciting content later! After 0.2 seconds, the ankle joint leads the acceleration stage.

At this time, the tibial anterior muscle and gastrocnemius muscle of the calf play a key role. When the gastrocnemius muscle contracts, it causes plantar flexion movements of the ankle joint, pushing the soles of the feet quickly and forcefully to the ground, creating a powerful reaction force to push the body forward.

Hu Kai and his colleagues found that at this stage, the plantar flexion speed and strength of the ankle joint are closely related to the athlete's starting acceleration. At the same time, according to the "length-tension" relationship of muscles, based on the previous movements of the hip and knee joints, the muscles around the ankle joint are at an appropriate length, which can generate greater tension, thereby exerting the maximum force of pushing the ground.

and.

Rapid plantar flexion of the ankle joint can also adjust the body's posture and keep the body's center of gravity in a reasonable position.

Reduce energy loss.

Improve acceleration efficiency.

Do you think this model is better and more awesome than before?

The key is this evolutionary training mode. Hu Kai specifically showed it to Su Shen. When Su Shen saw it, he immediately asked—

Did you make it yourself?

Hu Kai was a little confused.

But nodded anyway.

Although I don’t know why Su Shen asked this.

But he is Su Shen.

Ask this question.

Of course, someone asks this.

After listening to Hu Kai’s narrative, look at the report at hand.

Su Shen…

A bright smile appeared.

because.

They don't say it.

In fact, Su Shen was all preparing to help Zhang Peimeng and arrange a wave.

And this direction.

It starts in the third stage.

Where can I know?

Under the influence of my own years of influence.

Hu Kai and the others themselves.

I found this path.

This is better than Su Shen telling Zhang Peimeng and the others himself.

It made Su Shen feel more valuable.

Much more valuable.

Because this means...

They have their own minds and research skills.

The direction is right.

This is much better than giving the answer directly.

After reading Hukai's report, it said-

Neurological conduction and muscle recruitment.

The movement of the human body is controlled by the nervous system. In the third-level accelerated startup mode, the brain will send nerve impulses in specific orders and time intervals. In 0-0.1 seconds, the neuromuscular pathways related to the hip joint are first activated to recruit hip muscles such as the gluteus maximus muscles.

Over time, the nerve signals in 0.1 to 0.2 seconds focus on activate the quadriceps around the knee joint, etc. After 0.2 seconds, the nerve commands are concentrated on the muscles of the ankle joint. This process reflects the precise control of different muscle groups by the nervous system to achieve the best acceleration effect.

The size of the motor unit and the activation timing.

The motor unit consists of a neuron and the muscle fibers it controls. Large motor units usually contain more muscle fibers, which can generate greater strength, but the activation speed is relatively slow; small motor units are the opposite. In the third-level acceleration mode, the large motor units of the hip muscle group are gradually activated at the beginning of the start. With the acceleration progress, the movement units at the knee and ankle joints participate in sequence according to needs to achieve a gradual increase in strength and speed.

...

Generally speaking, there is no problem.

There are many loopholes in the details.

But they are not reopeners.

It is normal to have any details.

It's not normal if there is no problem with the details.

As long as the direction is right.

That's something worthy of recognition.

after all.

Lao Zhang this year.

But the ultimate peak year of the previous life.

It was also this year.

He ran for 10 seconds in the big race.

This value is valuable.

Comparable to the original Asian record holder Iton Haus.

After running for that 10 seconds, it had a much higher gold content.

The wind speed is much smaller.

Let us really see.

Possibility of hitting the World Series.

Break the possibility of ten seconds.

at this point.

It was what Su Shen said in the last interview.

so.

Let’s talk about the biggest expectations this year.

Of course it is Zhang Peimeng.

This year it depends on how he performs.

I have spent so many years cultivating myself.

It's been 2013.

Lao Zhang.

It's your turn to fulfill it.

Chuncheng Central Stadium.

I saw Zhang Peimeng's hip joint produce a larger stretching moment at 0-0.1 seconds at the start.

This torque is transmitted to the ground through the legs, generating a backward force, and the ground gives the human body a forward reaction force.

Over time, the knee and ankle joints produce greater torque and power output in turn, continuously increasing the ground reaction force and pushing the body to accelerate.

This is called—

Joint torque and power output.

The joint torque is within a hundred meters and has a great effect.

For example, during the starting and pushing stages, the hip joint stretching moment can generate a strong backward pushing force, which pushes the body forward through the reaction force of the ground. The dorsiflexion torque of the ankle joint can help increase the reaction force of the soles of the feet and increase the forward driving force.

For example, during the swinging of the legs, the torques of the hip and knee joints coordinate to control the swing amplitude and speed of the legs to ensure the balance of the body during the advancement.

Bang bang bang bang bang bang.

start up.

accelerate.

Completed in one go.

I feel it all work and rest.

Today’s Zhang Peimeng.

It seems a little different.

I didn't wait to think too much about work and rest.

Zhang Peimeng ran on the way.

look up.

When the torques of each joint are properly coordinated, the loss of energy during the transmission process can be reduced, and the power generated by the muscles can be converted into the motivation for the body to move forward to the maximum extent.

at this point.

He keeps it in mind.

For example, the current running stage.

The reasonable changes in the hip stretching moment and plantar flexion moment at different times can allow athletes to switch efficiently between movements such as kicking the ground and lifting the legs.

Efficient!

That's the key!

Bang bang bang bang bang bang bang!

Relying on starting similar to the third gear, mobilizing more joint torque and power output?

This is a good idea.

If Su Shen looks at it after the game.

This will definitely be the case.

Zhang Peimeng this year.

It certainly won't disappoint.

Although work and rest are also gratifying.

But this year, Lao Zhang is indeed the dark horse he is most looking forward to.

It's not just that.

Momentum transfer and energy conversion.

He is trying, too.

During the three-level acceleration process, the momentum of various parts of the body is constantly transmitted and accumulated.

The movement of the hip first generates momentum, which is transmitted to the knee joint and then to the ankle joint through the bones and muscle structures of the legs.

The movement of each joint increases momentum based on the previous joint, achieving a gradual increase in the body's kinetic energy.

Finally, chemical energy is converted into mechanical energy for the body to move forward, allowing athletes to get faster speeds!

Bang bang bang bang bang bang bang.

Bang bang bang bang bang bang bang.

Zhang Pei ran...so fast?

Maybe because everyone's concentration is ahead.

It's all about Su Shen and Zhao Haohuan.

This has led to not many people paying attention later.

It is difficult for you to divide your energy into several equal parts for observation in sprint competitions.

At least it's hard for you to do it during the game.

Especially ordinary people, they don’t have this leisure at all.

therefore.

Really paying attention to this.

The first to detect this element.

Not someone else.

It is Zhang Peimeng’s old opponent for so many years.

Work and rest.

No wonder they say that the person who knows them best is likely to be an opponent. Because the two have been competing, they are fighting each other with Zhang Peimeng. The two should have been very familiar with the rhythm of the game between the two sides.

But now.

Zhang Peimeng started from the start.

Give him one kind-

Um.

Unfamiliar feeling.

He didn't have time to think about the details, but the feedback he felt...

But it is so intuitive and real.

At the start, the force of the legs pushing the ground is transmitted to the trunk through the hip joint, so that the trunk can obtain forward momentum; during the acceleration and running stage, the force of the legs is not only transmitted to the trunk, but also further transmitted and distributed through movements such as swing of the arms, so that the overall momentum of the body continues to increase.

The human body's muscle system plays a key role in exercise. During different acceleration stages of 100-meter running, different muscle groups contract and relax in turn to achieve the generation and transmission of strength.

This time I was running on the way.

Calf muscles, back muscles, upper limb muscles, etc. are also involved. Through the coordinated contraction and relaxation of muscles, the momentum of each part is accumulated and transmitted, so that the body's speed is continuously increased.

Zhang Peimeng.

It actually began to actively touch...

The feeling of relaxing running.

You can say it was a mistake.

but.

The invention of many things in history.

Isn't it just a mistake?

At each stage of the third acceleration, part of the energy generated by muscle contraction is used to increase the body's kinetic energy and accelerate the body's speed, and the other part is used to overcome resistance such as gravity to do work and convert it into potential energy.

At the start, the contraction of the leg muscles consumes chemical energy and converts it into the body's forward kinetic energy and a certain potential energy, allowing the body to obtain initial speed and leave the ground at a certain height.

In the subsequent acceleration and running stages, the previous accumulation can be achieved, and chemical energy can be continuously converted into mechanical energy through continuous pushing and coordinated movement of various parts of the body.

Make the body's kinetic energy and potential energy continuously increase.

Momentum continues to accumulate.

accumulation.

accumulation.

accumulation.

According to the law of conservation of energy, the total energy of each part of the body remains unchanged without other external forces.

But energy is transformed and transmitted between different forms and parts of the body.

Therefore, when Zhang Peimeng ran on the way, his arm swinged, and the kinetic energy of his arm and the kinetic energy and potential energy of other parts of his body would be mutually transformed.

This transformation process is actually a process of momentum transmission, which causes the momentum of various parts of the body to be continuously adjusted and accumulated to achieve overall acceleration.

Bang bang bang bang bang bang bang.

Zhang Peimeng enters the second half.

He feels very good himself.

Use three-speed start to pry the rest of the technical points.

Use one technical point to drive breakthroughs and progress in other technical points.

It's indeed a great move.

The key is that he can still do it.

This year's Lao Zhang.

It's really OK.

Sixty meters and seventy meters.

Enter the rear journey.

Zhang Peimeng began to adjust the air to form a relatively stable airflow on the surface of the body through reasonable arm swing and body posture.

Reduce air resistance while.

Use the reaction force of air to increase the body's forward momentum.

Seventy meters and eighty meters.

The swing of his arms seemed to drive the air around his body to flow, forming a certain air flow field.

Cooperate with the force generated by leg pushing the ground.

Make the body move forward more smoothly in the air, and promote the transmission and accumulation of momentum in various parts of the body - finally release.

This wave.

Impact impulse theorem.

The impulse is equal to the product of force and the action time, and also equals the change of momentum.

During the third-level acceleration process, the force generated by the contraction of the athlete's leg muscles acts on the ground or is transmitted through the internal structure of the body, and it has a certain effect time.

During the starting stage, the legs quickly and forcefully push the ground produces a greater force, and the action time is relatively short. According to the impulse theorem, the body will obtain a greater change in momentum and quickly obtain the initial speed.

Then run the fastest on the way.

Although the force and action time of each step of the ground will change, the continuous step of the ground and the coordinated movement of various parts of the body will continue to generate impulse, which will continuously accumulate momentum in various parts of the body.

Zhang Peimeng this time.

It is to accumulate momentum.

It was a coincidence.

I've got the trick!

This is for players like him who have a pace frequency and a future.

It is a great breakthrough.

If placed in Buddhism.

Then this.

Only two words can describe it.

It's called—

An epiphany.

Ninety meters.

Zhang Peimeng knew that he had very little attention at this time, and not many people would pay attention to the people behind him at this time.

That happens that he can concentrate and concentrate on his own affairs.

When it was 90 meters, it was normal...

All work and rest should have caught up.

But this shot.

He felt that work and rest were approaching.

But it's not the same as before.

I have to go to this position with myself.

Then that means...

Ninety-five meters.

Diving.

Press down.

Retract the arm.

Clashing the line.

call----------

All the attention on the scene was attracted by the first place Su Shen, who opened 9.60 again.

This is also a matter of course.

To be fair, he would definitely be attracted to see Su Cheng's results when watching the game.

Even ranked second.

Zhao Haohuan was stuck here again after getting 9.70 seconds.

They all feel a little overshadowed.

It was eclipsed by 9 seconds and 70 seconds.

Then what else can I say?

Isn’t it normal to not have much attention in the third place?

Only Zhang Peimeng himself.

Now pay attention to how much you have run.

Take a closer look.

He couldn't help but feel passionate.

He pounded his left chest hard with his right hand.

With his personality, he rarely does such things usually.

But now.

It's not whether he wants to do it or not.

It's his physical instinct.

Want to do it or not.

9.83.

This is the lucky result for domestic athletes.

I didn't expect that I would arrive so quickly.

Pb.

Su Shen even joked before.

Saying that 9.83 seconds is the lucky result of domestic athletes. As long as you can run, it means that you are far from your limit.

There is something joking about this.

But there is also a disguised hint.

Sometimes enlightenment to the human mind is more important than physically, especially after reaching a certain limit.

Zhang Peimeng looked at it.

Beat your chest hard.

Following the Pb abbreviation after 9.83.

Let him all over.

It was like drinking a bowl of hot bean juice.

from head to foot.

All are comfortable.

ps: This year, Lao Zhang’s peak year, the flower-planting team will also enter a new form.

hey-hey.
Chapter completed!