The Su God of the Reopening of the Sports Arena

Chapter 2125 New Pb! Starting from the third gear! Using one technology to leverage other

Except Su Shen.

The rest of the group also ran well.

This is the advantage of living in the plateau.

Just look at what's displayed on the screen -

The fifth one is Zhang Peimeng.

Stride start: The distance between the front and rear legs is 1.3 times the width of the shoulders, forming a 56cm push-off working distance.

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

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

This spacing allows the hind legs to have a relatively large extension space and working distance when starting.

It can provide greater forward momentum to the body.

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

Although it is still within the scope of straight-arm start, there are also improvements based on its own technical characteristics.

For example, the conventional straight-arm squat start forms a stable and efficient force-generating posture by supporting both feet on the starting blocks, with a low body center of gravity, which can maximize the use of leg power to push and stretch. The "quasi-stride start" mainly relies on the large distance between the front and rear feet on the ground to build the starting posture, and the body center of gravity is relatively high.

Of course, there are pros and cons.

This starting method may make the body relatively unstable at the moment of starting, requiring athletes to have stronger core strength and balance ability to control body posture.

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

If it were the Zhang Peimeng of the past, he would have found it difficult to cope with it.

But he is now.

After so many years of polishing.

Already have this state.

Have such ability.

I saw that he adjusted the front and back distance of the starting blocks appropriately according to his own leg length and habits, making it slightly wider than the conventional crouch start to accommodate the larger front and back leg distance requirement.

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

The angle between the front starting block and the ground can be maintained at about 45°-50°, and the angle of the rear starting block is about 65°-70°. Such an angle can provide a larger stretching space and force transfer direction for the hind legs.

Step onto the starting blocks with both feet, with the entire sole of the front foot on the front starting block, and the forefoot of the back foot on the back starting block. The distance between the front and back feet should be about 1.3 times the width of the shoulders, forming a larger distance similar to a "stride start".

Place your hands on the ground, shoulder width or slightly wider, arms straight, back straight, head naturally drooping, eyes looking about 1.5-2 meters in front of the starting line. Raise your hips moderately, slightly higher than your shoulders, so that the angle between the thigh and calf of the back leg is about 130°-140°, and the angle between the thigh and calf of the front leg is about 90°-100°.

After hearing the "ready" command, continue to lift your hips and move your center of gravity forward, with your body weight mainly on your hands and front legs. The bending angle of the knee joint of the back leg decreases, further lengthening the leg muscles in preparation for exerting force.

After the starting gun sounded, Zhang Peimeng pushed the starting blocks quickly and forcefully with his hind legs.

At the same time, the front legs push the ground hard, pushing the body forward and upward.

During the stretching process, the hind leg should be fully extended, the force should be transferred to the starting block through the sole of the foot, and the reaction force of the starting block should be used to push the body forward quickly.

Actively swing your arms and coordinate with your legs to accelerate your body forward.

Next comes the second gear starting mode.

even.

Start trying new changes this year.

Start in third gear.

This is what he has been training for.

He tried the bent-arm start, but it was very difficult for him and it was not something he could learn just by wanting to.

It is better to start in second gear.

Then do the upgrade.

More in line with your physiological curve.

Just like now.

According to the Lakers and his team.

The new method developed is...

Phase 0, 0.1 - seconds hip dominant.

Lakers Kai told him that from a biomechanical point of view, the dominant role of the hip joint at the start moment is crucial. Research by Su Shen's laboratory shows that at the initial stage of the start, 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 flexor muscle group, generates powerful force through concentric contraction, causing the thigh to extend backward at the hip joint. At the same time, the iliopsoas and other hip flexor muscles also work together to stabilize the pelvis and assist in force.

This movement can effectively transfer the energy stored in the core of the human body to the lower limbs, providing the initial power for starting.

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

This is what creates favorable conditions for acceleration.

second stage.

0.1 - 0.2 seconds knee dominant.

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

During this period, Lakers said the contraction of the quadriceps is the main source of power.

The quadriceps muscle contracts and pulls the patella, thereby extending the calf at the knee joint and increasing the force between the leg and the ground.

Relevant muscle electrophysiological studies have shown that at this stage, the electromyographic activity of the quadriceps muscle is significantly enhanced, indicating that it is exerting force quickly. At the same time, the hamstring muscle also plays an important synergistic role, controlling the extension speed of the knee joint during the eccentric contraction process to ensure the stability and efficiency of the movement.

In addition, extending the knee joint can further extend the leg's ground push distance.

According to the momentum theorem Ft = mv - mu, when the force action time t is constant, increasing the distance of pushing off the ground means increasing the impulse of force F on the human body, thereby making the human body obtain a greater momentum change, that is, a faster speed increase.

The third phase.

0.2 seconds later the ankle becomes dominant.

After 0.2 seconds, the ankle joint dominates the acceleration phase.

At this time, the tibialis anterior and gastrocnemius muscles of the calf play a key role. When the gastrocnemius muscles contract, the ankle joint performs plantar flexion, pushing the sole of the foot quickly and forcefully toward the ground, generating a strong reaction force to push the body forward.

Hu Kai and his team 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, based on the "length-tension" relationship of the muscle, based on the previous movement of the hip and knee joints, the muscles around the ankle joint are at an appropriate length, which can generate greater tension and thus exert the maximum ground-pushing power.

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 powerful than the previous ones?

The key is this evolutionary training mode. Hu Kai showed it to Su Shen on purpose. When Su Shen saw it, he immediately asked back -

Did you come up with it yourself?

The Lakers and Celtics were a little confused.

But he nodded.

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

But he is Su Shen.

Ask this.

Of course there is a reason why people ask this question.

After listening to Hu Kai's narration, I looked at the report in hand.

Su Shen...

Showed a brilliant smile.

because.

They don't say.

In fact, Su Shen was preparing to help Zhang Peimeng and make some arrangements.

And this direction.

It starts in third gear.

How to know.

Under the influence of so many years.

Lakers themselves.

I actually found this road.

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

It makes Su Shen feel even more valuable.

The value is much higher.

Because this means...

They have their own minds and research abilities.

The direction was right.

This is much better than just giving an answer.

After reading Hu Kai's report, it says:

Nerve conduction and muscle recruitment.

The movement of the human body is controlled by the nervous system. In the three-level acceleration start mode, the brain sends nerve impulses in a specific order and time interval. In 0-0.1 seconds, the neuromuscular pathways related to the hip joint are first activated, recruiting hip muscles such as the gluteus maximus.

Over time, 0.1-0.2 seconds of neural signals focus on activating the quadriceps muscles around the knee joint. After 0.2 seconds, the neural instructions focus on the muscles of the ankle joint. This process reflects the precise control of the nervous system on different muscle groups to achieve the best acceleration effect.

Motor unit size and activation timing.

A motor unit consists of a neuron and the muscle fibers it controls. Large motor units usually contain more muscle fibers and can generate greater force, but are relatively slow to activate; the opposite is true for small motor units. In the three-level acceleration mode, the large motor units of the large hip muscles are gradually activated at the start. As the acceleration progresses, the motor units at the knee and ankle joints participate in turn as needed to achieve a gradual increase in strength and speed.

……

Generally speaking, there is no problem.

There are still many loopholes in the details.

But they are not reopeners.

It's normal to have problems with the details.

It would be abnormal if there were no problems with the details.

As long as the direction is right.

That’s something to be affirmed about.

after all.

Lao Zhang this year.

But it was the peak year of the previous life.

Also this year.

He ran under 10 seconds in the big race.

This gold content.

Comparable to the original Asian record holder, Hiroshi Ito.

Running out of 10 seconds is much more valuable.

The wind speed is also much lower.

Let us really see it.

The possibility of reaching the World Series.

It is possible to break ten seconds.

at this point.

This is what Su Shen himself said in his last interview.

and so.

What is my biggest expectation for this year?

Of course it is Zhang Peimeng.

It all depends on how he performs this year.

I have also spent so many years cultivating it.

2013 years.

Old Zhang.

It's time for you to make good on your promise.

Spring City Center Stadium.

It was seen that Zhang Peimeng's hip joint produced a large extension torque in the 0-0.1 second at the start.

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

Over time, the knee and ankle joints, in turn, generate greater torque and power output, increasing ground reaction forces and accelerating the body.

This is called——

Joint torque and power output.

Joint torque plays a big role within a hundred meters.

For example, during the start and push-off phases, the hip extension torque can generate a strong backward push-off force, pushing the body forward through the reaction force of the ground. The ankle dorsiflexion torque can help increase the reaction force of the sole of the foot and increase the forward driving force.

For example, during the swinging process of the swinging legs, the torques of the hip and knee joints work in coordination to control the swing amplitude and speed of the legs and ensure the balance of the body during the forward movement.

Bang bang bang.

start up.

accelerate.

All in one go.

Both labor and rest are felt.

Today's Zhang Peimeng.

It seems a little different.

Without waiting for Lao Yi to think more.

Zhang Pei rushed in and ran.

look up.

When the torques of each joint are properly coordinated with each other, the energy loss during the transmission process can be reduced, and the force generated by the muscles can be converted into the body's forward momentum to the maximum extent.

at this point.

He kept it in mind.

For example, in the current mid-run phase, the reasonable changes in hip extension torque and plantar flexion torque at different times can allow athletes to efficiently switch between actions such as pushing off the ground and lifting their legs.

Efficient!

That’s the key!

Bang bang bang bang!

Relying on a third gear start to mobilize more joint torque and power output?

This is a good idea.

Su Shen will watch it after the game.

I'm sure you'll comment like that.

Zhang Peimeng this year.

It really doesn't disappoint.

Although the performance of labor and rest is also gratifying.

But this year, Lao Zhang is indeed the most anticipated dark horse.

But that’s not all.

Momentum transfer and energy conversion.

He's trying too.

During the third-level acceleration process, the momentum of various parts of the body is continuously transferred and accumulated.

The movement of the hip first generates momentum, which is transferred through the bone and muscle structure of the leg to the knee joint and then to the ankle joint.

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

Ultimately, chemical energy is converted into mechanical energy that propels the body forward, allowing athletes to achieve faster speeds!

Bang bang bang bang bang.

Bang bang bang bang bang.

Zhang Peimeng ran... so fast?

Maybe it’s because everyone’s focus is on the front.

It's all on Su Shen and Zhao Haohuan.

This resulted in not many people paying attention to it later.

In a sprint race, it is difficult to divide your energy into several equal parts for observation.

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

Especially ordinary people, they simply don’t have the leisure time.

therefore.

Really paying attention to this.

The first one to notice this element.

Not someone else.

It is Zhang Peimeng’s old rival for many years.

Work and rest.

No wonder they say the person who knows you best is most likely your opponent. The two of them have been competing with each other, with Lao Yi and Zhang Peimeng hitting each other, and the two of them should be very familiar with the rhythm of the game between the two sides.

But now.

Zhang Peimeng started from the start.

Just give him a kind of -

Ok.

An unfamiliar feeling.

He didn't have time to think about the details, but the feedback from his feelings...

But it is so intuitive and real.

When starting to run, the force of the legs pushing off the ground is transmitted to the trunk through the hip joint, allowing the trunk to gain forward momentum.

During the acceleration and mid-running stages, the power of the legs is not only transmitted to the torso, but the momentum is also further transmitted and distributed through actions such as arm swinging, thereby continuously increasing the overall momentum of the body.

The human body's muscular system plays a key role in exercise. During the different acceleration phases of the 100-meter run, different muscle groups contract and relax in sequence to achieve the generation and transmission of force.

This time when I was running on the way.

The calf muscles, back muscles and upper limb muscles are also involved. Through the coordinated contraction and relaxation of the muscles, the momentum of each part is accumulated and transferred, so that the speed of the body is continuously increased.

Zhang Peimeng.

I actually started to actively touch...

Relaxing running feeling.

You could say it was a lucky coincidence.

but.

Many things were invented throughout history.

Isn't it just a blessing in disguise?

In each stage of the three-speed acceleration, part of the energy generated by muscle contraction is used to increase the body's kinetic energy and increase the body's speed, and the other part is used to overcome resistance such as gravity and do work, which is converted into potential energy.

When starting a run, the contraction of the leg muscles consumes chemical energy, which is converted into the body's forward kinetic energy and a certain amount of potential energy, allowing the body to gain initial speed and leave the ground to a certain height.

In the subsequent acceleration and mid-run stages, the accumulation of the previous phases can be used to continuously convert chemical energy into mechanical energy through continuous pushing off the ground and the coordinated movement of various parts of the body.

The body's kinetic energy and potential energy continue to increase.

Momentum continues to build.

accumulation.

accumulation.

accumulation.

According to the law of conservation of energy, the total energy of each part of the body remains unchanged when no other external forces do work.

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

So when Zhang Peimeng was running, his arms were swinging, and the kinetic energy of his arms was converted into the kinetic energy and potential energy of other parts of his body.

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

Bang bang bang bang bang.

Zhang Peimeng entered the second half.

He himself felt very good.

Start in third gear to leverage the rest of the technical points.

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

It is indeed a brilliant move.

The key is that he can still do it.

This year's Lao Zhang.

Indeed, you can.

Sixty meters, seventy meters.

Enter the latter stage.

Zhang Peimeng began to adjust his body posture and arms reasonably to create a relatively stable airflow on the surface of his body.

While reducing air resistance.

Use the reaction force of the air to increase your 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 airflow field.

Cooperate with the force generated by the legs pushing off the ground.

It enables the body to move more smoothly through the air, promoting the transfer and accumulation of momentum in various parts of the body - and finally releasing it.

This wave.

Implied impulse theorem.

Impulse is equal to the product of force and time of action, and is also equal to the change in momentum.

During the three-level acceleration process, the force generated by the athlete's leg muscle contraction acts on the ground or is transmitted through the internal structure of the body, and there is a certain amount of action time.

During the starting phase, the legs' quick and powerful pushing off the ground generates a large force with a relatively short action time. According to the impulse theorem, the body will gain a large momentum change and quickly acquire the initial velocity.

Then run at top speed on the way.

Although the force and duration of each push off will vary, the continuous push off and the coordinated movements of various parts of the body continuously generate impulse, allowing the momentum of various parts of the body to continue to accumulate.

Zhang Peimeng this time.

It’s about accumulating momentum.

Lucky hit.

Got the hang of it!

This is for a player like him who has a good pace and is more forward-looking.

It is a huge breakthrough.

If placed in Buddhism.

Then this.

There are only two words to describe it.

It's called——

Epiphany.

Ninety meters.

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

That's perfect, he can concentrate and focus on his own things.

When I reached 90 meters, normally...

Lao Yi should have caught up.

But this shot.

He felt that Lao Yi was approaching.

But it's not the same as before.

At this point, he is already on par with me.

That means...

Ninety-five meters.

dive.

push down.

Retract your arms.

Cross the finish line.

call----------

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

This is also a matter of course.

To be fair, if he saw Su Cheng's performance in the competition, he would definitely be attracted.

Even ranked second.

Zhao Haohuan once again got 9 seconds and was stuck here.

They all feel a little overshadowed.

9 seconds pales in comparison.

What else can be said?

Third, isn’t it normal that there is not much attention?

Only Zhang Peimeng himself.

Now focus on how much you run.

Take a closer look.

He couldn't help but feel his blood boiling.

He hit his left chest hard with his right hand.

Given his personality, he seldom does such things.

but now.

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

It's his body's instinct.

Do you want to do it?

9.83.

This is said to be the luckiest result for domestic athletes.

I didn't expect that I would get there so quickly.

Pb.

Su Shen even joked about it before.

It is said that 9 seconds is a lucky result for domestic athletes. As long as you can run that time, it means you are far from reaching your limit.

This is a joke.

But there is also a hint in disguise.

Sometimes enlightenment of the human mind is more important than physical enlightenment, especially when one reaches a certain limit.

Zhang Peimeng looked at it.

Beat your chest hard.

The abbreviation for Pb follows 9.83.

Let him be all over.

It's like drinking a bowl of hot soy milk.

from head to foot.

All refreshing.

ps: This year is Lao Zhang’s peak year, and the Flower-Growing Family Sprint Team is also about to enter a new form.

Hey.

I get excited just thinking about it!!! La la la!!! ...