The Su God of the Reopening of the Sports Arena

Chapter 2238: New Technology in Action! Level 3 Power Chain!

Chapter 2238: New technology in action! Level power chain!

Bang————————

At the start, Chen Juan bent her arms to an angle of 60°-70°, with her elbows adducted close to both sides of her torso, forming an energy storage state similar to a compressed spring.

According to the principle of leverage, the triceps, anterior deltoid and other muscle groups are at the optimal length for exerting force at this time.

After the gun goes off, both arms extend rapidly with the elbows as fulcrums, generating a powerful rotational torque.

The trunk rotates through the shoulder joint, and the rotational force of the upper limbs is transmitted to the lower limbs through the core muscles, forming a three-level power chain of "upper limb drive-trunk transmission-lower limb propulsion".

Correct.

It is a three-level power chain system.

This is one of the key points of Chen Juan!

This is also the new advice Su Shen gave her.

The human body is a complex biomechanical system that generates and transmits force through the coordinated action of joints and muscles at each stage of movement.

When starting a race, the upper limbs generate initial power through specific movements, and use the principle of leverage to put the triceps, anterior deltoid and other muscle groups at the optimal length for force generation.

This enables a larger torque to be generated with a smaller force.

Provides power for rapid extension of the upper limbs.

Then during the movement as the energy is transformed between different forms and parts of the body.

The energy generated by the upper limb movements drives the trunk to rotate through the shoulder joints and transfers the energy to the core muscles. The core muscles play a role in stabilizing and transferring energy, converting the rotational force of the upper limbs into propulsive force of the lower limbs, enabling the body to gain forward acceleration and achieve effective utilization and transfer of energy, thereby complying with the law of conservation of energy.

Secondly, the nervous system plays a key regulatory role in the entire power chain.

The brain accurately controls the timing and strength of contraction and relaxation of each muscle group through nerve signals, so that the movements of the upper limbs, torso and lower limbs can be coordinated.

For example, at the moment of starting, the nervous system will prioritize activating relevant muscle groups according to the needs of the movement to ensure the orderly transfer of force and efficient movement.

The technical principle is:

Start with your arms bent at a specific angle.

Forming energy storage state.

After the gunshot, stretch quickly using the elbow joint as a fulcrum.

This movement pattern utilizes the leverage structure of the upper body.

Able to generate maximum force output when the muscle contracts, providing starting power for the entire kinetic chain.

At the same time, the rapid swinging of the arms can also help maintain body balance and coordinate movements, helping athletes achieve a stable posture at the moment of starting.

Just like Chen Juan now——

After the gunshots rang out.

Start immediately.

The trunk serves as the hub connecting the upper and lower limbs, and transmits force through the contraction and relaxation of the core muscles.

After receiving the rotational force from the upper extremities, the core muscles will perform an isometric or eccentric contraction.

At this time, the force is transferred steadily to the lower limbs.

This requires athletes to have good core stability and strength, be able to adjust their body posture in an instant, reduce energy loss, and ensure smooth transmission of the power chain.

Chen Juan's core strength has reached a new level this year.

She is the best core player among the entire Ersha Island women's team and also the best core player in Asia.

Even if we look at the whole world, her core is now extremely powerful.

This is not to say how strong her core talent is.

Instead.

She is the one among all people because of Su Shen.

One of the first female athletes to do extensive scientific training for strength and core.

The rest of the people just practice it casually, without a scientific and systematic process.

Even if some people want to improve in this area, there is no scientific experience to guide them.

You can only cross the river by feeling the stones.

This and Chen Juan are directly protected by the super plug-in Su Shen.

I kept the accelerator on full throttle all the way on the highway.

Fundamentally different.

therefore.

You could say her core talent isn't the best among athletes.

but?
Her core training and core science development…

But she is the strongest among women.

none of them.

Otherwise, she wouldn't have attracted Frasier's attention.

You have to know that Fraser is a super star among female athletes. Not only her career height, legendary height, honor height, but also her career endurance height.

They are all the best among women.

There aren't many athletes that she likes.

An Asian athlete that she likes.

There wasn't even one before.

This is not to look down on previous Asian female athletes.

It's just that you have the ability of Fraser.

How could you possibly take a second look at an Asian female sprinter who is so far behind even 11 seconds?
Even if this is said.

That's against my will.

Even a fool can see that.

The organizers definitely gave too much.

Not that she really felt that way.

Su Shen saw that Chen Juan's core skills had improved again this year, and decisively told him that they could start a new round of technical advancement.

That is the one right now.

A three-level power chain of "upper limb drive-trunk conduction-lower limb propulsion" is formed.

Take a step forward.

Cut into the corner angle.

The lower limbs are the final link in converting force into forward momentum for the body.

After receiving power from her torso, Chen Juan's hip, knee and ankle joints in her lower limbs worked in coordination.

Through the contraction of the leg muscles, especially the gluteus maximus, quadriceps femoris and calf triceps and other major muscle groups, the sole of the foot and the ground generate a strong force.

This is based on Newton's third law. The ground will give the human body a reaction force, pushing the body forward and accelerating.

At the same time, the joints of the lower limbs will undergo appropriate flexion and extension adjustments during the movement to adapt to different stages of movement and changes in ground reaction force, thereby improving propulsion efficiency.

This is because in the field of sports biomechanics, the three-level power chain of "upper limb drive-trunk conduction-lower limb propulsion" is essentially a human movement system constructed based on a multi-link dynamic model.

This model views the human body as a system composed of multiple rigid links, such as upper limbs, torso, and lower limbs, connected by flexible joints, such as shoulder joints and hip joints.

The movement of each link will affect other links through mechanical coupling effect.

Its operating mechanism follows Newton's laws of motion and muscle mechanics, and achieves orderly transfer and conversion of energy through precise regulation of the neuromuscular system.

Chen Juan is doing it.

That's it.

Wonderful turn in!
Such a big size.

Such a quick start into the turn.

It’s just...

It's beyond the norm.

But what is extraordinary?

It’s just that the previous scientific system didn’t understand these things.

It seems extraordinary.

In fact, according to the Hill muscle model, the muscle is at its optimal initial length. At this time, the degree of overlap between actin and myosin in the sarcomere is optimal, which can produce the maximum number of cross-bridge bindings and make the muscle contraction force reach its peak.

At the same time, the lever arm length design at this angle can efficiently convert the linear force of muscle contraction into rotational torque.

It is equivalent to further sophisticated configuration of the lever system.

Then use the unparalleled speed in the women's field brought by bent arms to explode.

Accelerate suddenly!
Bang bang bang bang bang.

During the operation of the power chain, there is inertial coupling and force coupling between each link.

The rapid rotation of the shoulder joint converts the rotational inertia of the upper limb into torsional torque of the trunk through the principle of conservation of angular momentum!

The core muscles use the spiral chain theory to convert rotational force into propulsive force along the longitudinal axis of the body!

In this process, the fascia system, such as the thoracolumbar fascia, is actually passively mobilized as a biomechanical link.

Through elastic energy storage and release mechanism, the energy transfer efficiency is further improved.

Accelerate on the curve!
Keep accelerating!
the whole process……

There was actually a violent starting acceleration feeling that is unlikely to occur for tall people.

This feeling.

Normally it only occurs in shorter athletes.

It is extremely difficult for tall people to show up.

For example, in the men's field.

If you don't support the bent-arm start.

Then there is only one person who is over 1 meters tall who can do it.

There is no need to say much about his name, it must be Usain Bolt.

Apart from this, there is no second person.

Bang bang bang bang bang.

Accelerate on the curve!
Following Su Shen's guidance, Chen Juan's central nervous system achieved precise regulation of the power chain through the dual mechanisms of feedforward control and feedback control.

At the moment of acceleration, the motor cortex of the brain pre-plans the movement pattern and selectively activates the target muscle groups through the spinal cord motor neuron pool.

For example, now it is the upper limb extensors, core stabilizers, and lower limb extensors.

At the same time, the proprioceptive system, muscle spindles, and Golgi tendon organs monitor changes in muscle length and tension in real time, and make dynamic adjustments through spinal reflex arcs to ensure the coordination and stability of movements in each link.

Finish these.

Maximize energy transfer efficiency.

start preparing.

"Sister Juan, the core advantage of a good three-level power chain is the multi-level energy amplification mechanism."

"Multi-stage energy amplification mechanism? What does this mean, Brother Tian?"

"The three-level power chain achieves a step-by-step amplification effect through three energy conversions. For example, in the upper limb driving stage, the linear force generated by muscle contraction is converted into rotational torque through the lever system."

"During the trunk conduction phase, rotational kinetic energy is converted into longitudinal propulsion through the spiral contraction of the core muscles. During the lower limb propulsion phase, the ground reaction force and the lower limb extension force form a combined force to complete the final kinetic energy output."

"Our laboratory research shows that proper use of the power chain can increase energy transfer efficiency by 30%-40%."

Su Shen's words.

To Chen Juan, it was an imperial edict.

The downside of her doing this is that if Su Shen said something wrong, then she would also be wrong.

But if what Su Shen said is right.

Then her execution ability is 100%.

There won't be any hesitation.

Run on the curve!
Who would have thought that among all the people, Chen Juan would be the first to enter.

The 200 meters is different from the 100 meters. Almost no one will give their all here. It is even more difficult for female athletes to run at a high speed here due to their physiological conditions.

Chen Juan, that solved the problem.

Plus, she still runs in the Jamaican style.

Sprint towards the curve ahead with all your strength.

At least it has an advantage over the American rhythm distribution method which reserves too much energy at the beginning.

Two add up.

Plus a new level 3 boost.

Chen Juan is among many famous generals.

He was also the first one to be killed.

Bang bang bang bang bang.

Optimal utilization of elastic energy storage!

The fascia and tendon tissues of the human body have significant elastic properties. During the operation of the power chain, the pre-swing of the upper limbs, the torsion of the trunk and the buffering stage of the lower limbs will cause the elastic tissues to deform and store elastic potential energy.

When entering the force-generating stage, this potential energy is released rapidly, forming a "spring effect".

For example, when the core muscles twist the trunk, the elastic deformation of the thoracolumbar fascia can provide an additional 15%-20% explosive power.

Of course Chen Juan is not as good as Su Shen in this area.

But she doesn't have to do that well.

Just do better than the rest.

Through the three-level kinetic chain, athletes can obtain better kinetic parameters.

The torque generated by the upper limb drive can increase the angular acceleration of the trunk by 25%-30%, thereby increasing the extension force of the lower limbs by 15%-20%.

Chen Juan felt more powerful than ever throughout the run.

Even Jeter.

Never thought about it.

Chen Juan's gun is in such good condition.

The 200m hit a low point after the Olympic year.

The scores of most women showed a decline in varying degrees.

This shot was even on a small plateau.

Many people simply cannot display their full potential.

Only Chen Juan is as steady as ever.

On the contrary, it performed well.

stable.

This is the biggest feature of Ersha Island.

Chen Juan is of course the perfect successor.

She doesn't need to perform for a particularly long time.

She just needs to perform normally.

"She's still in the lead now. She ran so smoothly with this shot that no one can catch up with her!"

The coordinated operation of the kinetic chain reduces ineffective muscle contraction and reduces energy consumption.

In fact, Chen Juan didn’t do the whole thing perfectly.

The first actual combat demonstration had more or less problems.

But as long as you do better than others, that's enough.

After all, others can't even do it.

It's already a big win here.

Speed zone!

Rapid liberation!
Chen Juan is far ahead!
In dynamic movements, the tertiary kinetic chain maintains body balance through the "active control + passive constraint" mechanism.

The reverse torque generated by the swing of the upper limbs can offset the tendency of the body to lean forward caused by the extension of the lower limbs.

The isometric contraction of the core muscles of the trunk forms a rigid support, effectively resisting external force disturbances.

Su Shen's experiment shows that athletes who have undergone systematic training can shorten the time it takes to restore balance by 30%-40% when subjected to lateral interference.

Collaborative optimization of action modes!
Chen Juan's speed increased again!

The neuromuscular system achieves automatic control of movements through central pattern generators (CPGs).

During the kinetic chain training process, CPG gradually forms stable neural coding, so that the timing error of the movements of the upper limbs, trunk, and lower limbs is controlled within 50ms.

This can significantly improve the fluidity and coordination of movements.

Chen Juan did a great job indeed!

The three-level energy supply errors are all extremely well controlled.

It's not just about comprehension and learning ability.

And her basic skills.

I have been training with Su Shen for so many years.

There was no discernible change at the time.

Until now.

Only gradually did things begin to change.

More and more positive feedback.

Why do we talk about basic skills?
Just talking about the three-level power chain, without a solid basic skill, you simply cannot proceed.

I tell you, no matter how much you practice, it’s useless.

Because of the complexity of neuromuscular coordination.

Achieving efficient kinetic chain operation requires the establishment of complex neuromuscular connections.

During this process, athletes need to precisely control multiple variables, including upper body swing angle.

The error must be controlled within ±5°.

Torso twist timing.

The phase difference with lower limb extension needs to be maintained at 90°-120°.

The angle between the lower limb extension direction and the ground needs to be maintained at 45°-55°.

Your basic skills are not up to standard.

It's impossible to make it so detailed.

Extreme speed impact.

Near the top of the arc.

When Chen Juan runs on a curve, the outer arm needs to increase the backswing amplitude and speed, and generate a larger reverse torque through the principle of conservation of angular momentum to offset the body's external rotation tendency caused by centrifugal force.

Faced with the centripetal force that is about to disappear suddenly.

Chen Juan uses core anti-rotation and tilt control.

When running on a curve, the torso needs to maintain an inward tilt angle of 3-5°, which is perpendicular to the ground, while resisting the lateral torsion caused by centrifugal force.

Over the top of the arc.

Descend the curve.

Still... first!

Lower limb propulsion, vector extension optimization in an eccentric force field.

At the same time, attention is paid to the differentiated force patterns of the inner and outer lower limbs.

When running in a curve, the outer leg bears 70%-80% of the propulsion force.

It is also necessary to provide forward driving force and inward centripetal force at the same time, and the angle between the direction of the combined force and the ground must be controlled at 35°-40°.

"Down the bend!"

Bang bang bang bang bang.

During the entire downward curve, Chen Juan adjusted the arch support for athletes with knee varus so that the angle between the knee joint center, the second metatarsal bone, and the hip center was controlled at 5°-8° during the curve extension to reduce the stress on the patellofemoral joint.

Curve into the straight!
Chen Juan operates with a three-level power chain mechanism.

As long as she ran out, she felt much more relaxed than before.

None of these famous generals could outrun him.

150 meters 160 meters.

Jeter was frustrated at this time.

He was trying to counterattack on the main straight.

result……

It hasn't shrunk at all.

It's even getting bigger.

Chen Juan continued to move forward steadily.

I saw someone coming to bring me food.

She doesn't care.