The Su God of the Reopening of the Sports Arena

Chapter 2157 makes humanity super-start and super-accelerate...all become history!

I saw Su Shen enter the acceleration position.

fast.

Dynamically adjust the torso tilt angle.

Tilt from 55° → 48° to activate the hydrodynamic effect.

Calculated according to the air resistance formula - F_d=0.5ρC_dAv.

The change in the trunk angle can reduce the windward area by 18%.

Greater normal force also helps maintain the body's mechanical balance in the vertical direction, ensuring the stability of the athlete's body posture during high-speed movement, allowing the athlete to more effectively convert muscle strength into forward propulsion and achieve efficient acceleration.

Not to mention, reducing the windward area.

It can also allow the body to break through the air more smoothly.

The lumbar segments undergo stepwise extension with a phase difference of 15°.

The human spine is composed of multiple vertebrae, which are connected by intervertebral discs, ligaments and muscles.

During exercise, the progressive extension of the lumbar segments is an orderly movement pattern.

When the human body enters accelerated running from the initial posture, the nervous system sends out commands to coordinate the contraction of the muscles around the lumbar spine.

Due to the different muscle attachment points and mechanical levers of each lumbar segment, under the action of muscle contraction force, the lumbar spine will stretch in a certain order and angle, resulting in a step-by-step extension with a phase difference of 15°.

This gradual stretching allows the spine to better adapt to changes in body posture and external forces during exercise, while reducing pressure on individual vertebrae and intervertebral discs, protecting the structure and function of the spine.

Why do this?

Of course, it is to utilize the principle of improving the efficiency of the eccentric-concentric contraction conversion of the iliopsoas muscle.

The iliopsoas muscle is an important muscle that connects the lumbar spine, pelvis and femur, and plays a key role in the movement of the hip joint during running.

When accelerating into a sprint, as the trunk inclination angle changes, the body's center of gravity and mechanical environment also change.

The iliopsoas first undergoes an eccentric contraction, which is when the muscle is stretched while under load, during which time the muscle stores elastic potential energy.

As the body moves forward, the iliopsoas muscle quickly converts into concentric contraction, that is, the muscle shortens to generate force, releasing the stored elastic potential energy and converting it into forward momentum for the body.

This connects to why we need to do this first - dynamically adjust the torso tilt angle.

Because they don't do a good job of utilizing the principle of improving the efficiency of the eccentric-concentric contraction conversion of the iliopsoas muscle.

What Su Shen wants to use is to increase the power of rapid kicking and stretching.

The acceleration zone requires rapid speed increase, and the efficient contraction conversion of the iliopsoas muscle enables Su Shen to pre-stretch the muscles through eccentric contraction and store elastic potential energy when pushing off the ground.

Then it quickly contracts concentrically, converting the stored energy into a powerful pushing and stretching force, pushing the body forward and accelerating it, so that each step can generate greater propulsion.

Then optimize your body posture.

The iliopsoas works in conjunction with other muscles, and the improved efficiency of its contraction conversion helps maintain the body's balance and correct posture during acceleration.

Through efficient contraction, the iliopsoas muscle can better control the movement of the hip joint, allowing the body's center of gravity to transition smoothly and reduce energy loss.

That is to say, let yourself...use more energy to accelerate forward.

Combined with enhancing joint stability.

This is because the hip joint needs to bear greater pressure and impact during acceleration. The efficient contraction and conversion of the iliopsoas muscle can better maintain the stability of the hip joint, and through precise muscle control, the joint can maintain the correct position and angle here.

Reduce joint movement and risk of injury.

Provides a stable foundation for the legs to exert force.

So what is the basis?

The answer is of course——

Push your cadence further!

Cadence?

What is the relationship with the principle of improving the efficiency of eccentric-concentric contraction conversion of the iliopsoas muscle?

relation……

big.

The iliopsoas muscle has a high contraction conversion efficiency, which allows the leg muscles to quickly complete the contraction and relaxation cycle and speed up the leg swing.

The improved efficiency of the iliopsoas muscle's eccentric-concentric contraction conversion means that the muscle can complete the process from lengthening to shortening more quickly.

In the acceleration zone of sprinting, the cycle of each step includes the leg swing backward, which is the eccentric contraction phase, and the forward swing, which is the concentric contraction phase. This efficient conversion of the pattern reduces the time spent in each phase, thereby shortening the entire muscle contraction cycle and directly increasing the step frequency per unit time.

Is this possible?

Of course it works.

Because it shortens the muscle contraction cycle.

And while doing this technical action.

This is equivalent to optimizing the muscle mechanical properties.

This is because.

The mechanical properties of the iliopsoas muscle have a significant impact on cadence!

Just like Su Shen’s current step.

During the eccentric contraction phase, when the muscle is stretched, actin and myosin in the sarcomere interact to store elastic potential energy.

Efficient conversion efficiency means that the muscles can store more elastic potential energy in a shorter period of time, and this energy can be released more efficiently during the concentric contraction phase.

From the analysis of muscle mechanics model, this rapid release of energy increases the power output of muscle contraction and increases the acceleration of leg swing.

At the same time, the viscosity of the muscles is better regulated during the efficient conversion process, reducing energy loss within the muscles and making muscle contraction and relaxation smoother.

Due to the fast contraction conversion speed, the legs can complete a backward and forward swing cycle in a shorter time, thereby speeding up the overall swing speed.

Then increase your cadence.

There are new possibilities.

of course.

It has come to this point.

It’s that simple. It’s too easy to break through.

Su Shen’s start is unique among everyone.

In the unique situation, I want to go further.

It's like dancing on the top of a pyramid.

The difficulty and complexity of the breakthrough.

They are increasing exponentially.

can.

terribly sorry.

This can stop everyone in the world.

But he couldn’t stop Su Shen himself.

because……

His knowledge system.

He was not allowed to stop.

Don't let him stop.

After doing all of the above, the Achilles tendon superelastic effect is ready and can be activated.

Achilles tendon hyperelastic effect.

activation!

The Achilles tendon has superelastic properties. During the support period in the 100-meter acceleration zone, when the athlete's foot lands, the weight of the body and the impact force generated by the movement cause the Achilles tendon to be stretched.

During the short support period of 0.08s, the strain energy of the Achilles tendon reached 6.2%, close to its ultimate elastic deformation threshold of 8%.

During this process, the Achilles tendon acts like a spring and follows Hooke's law F = kx, where F is the force acting on the Achilles tendon, k is the elastic coefficient of the Achilles tendon, and x is the deformation of the Achilles tendon.

According to the elastic potential energy formula E = 0.5kx, calculation shows that the energy stored in the Achilles tendon during this process is approximately 42J.

This superelastic effect of the Achilles tendon is determined by its special biomechanical structure.

The Achilles tendon is mainly composed of collagen fibers, which will undergo orderly stretching and rearrangement when subjected to force, allowing the Achilles tendon to store a large amount of elastic potential energy while withstanding large tensile forces.

When the Achilles tendon is stretched to a certain extent, its internal intermolecular forces will resist further stretching, ensuring that the Achilles tendon does not exceed its ultimate elastic deformation threshold, thereby ensuring that the Achilles tendon can continue to stably store and release energy during repeated movement.

Then.

During the 100-meter acceleration phase.

This storage and release of elastic potential energy is critical to improving an athlete's propulsion and movement efficiency.

It can quickly release the stored energy at the end of the stance period, helping the ankle joint to generate strong plantar flexion force and push the body forward.

Subsequently.

Reactivate the plantar fascia force conduction!

During the 100-meter acceleration, the plantar flexion of the ankle joint converts the plantar flexion force into forward thrust through the Windlass mechanism.

When the toes leave the ground, the metatarsophalangeal joints dorsiflex, causing the plantar fascia to be stretched taut, like a stretched bowstring.

Just like Su Shen now.

This tensioning force is transmitted through the force lines of the plantar fascia, from the heel to the forefoot, thereby generating a forward component of force that pushes the body forward.

At this moment.

Su Shen stretched vigorously.

The arch stiffness index (AI) is increased to 3.8N/mm.

This means that his arch is now able to maintain better stiffness and stability when subjected to force.

Effectively transfer power to the ground, providing better support and propulsion for the body.

Being able to do this is not metaphysics.

This is science.

Because the plantar fascia is the fibrous tissue that connects the heel bone to the metatarsal bones, it plays a key role in maintaining the arch structure and transmitting force.

The principle of the Windlass mechanism is based on the anatomical relationship between the plantar fascia and the metatarsophalangeal joints.

When the metatarsophalangeal joint is dorsiflexed, the tension of the plantar fascia increases, and this tension is transmitted to the entire arch through the fibrous structure of the fascia, causing the arch to rise and become stiffer.

The increase in arch stiffness helps reduce energy loss during landing and pushing off the ground, and improves the efficiency of force transfer.

In the 100-meter acceleration zone, athletes need to quickly convert ground reaction force into forward propulsion.

The force transmission of the plantar fascia and the change in the stiffness of the arch are just...capable of effectively achieving this transformation.

Provide athletes with continuous acceleration power, thereby improving athletic performance.

Of course, there is no certainty about the concept of fascia now.

Not to mention activating the plantar fascia force transmission.

There is no cognition at all.

Not to mention applying it to sports practice.

terribly sorry.

Now this wave of science and technology.

Only Su Shen can master it.

The door is only open to him.

and so……

Unfortunately.

Bolt and Carter really put in a lot of effort.

Various attempts at scientific breakthroughs have also been made.

just.

On Su Shen's side.

More scientific.

Go deeper.

More profound.

How do you say that.

correct.

Everything is divided into different grades.

People are no exception.

science.

No exception.

You may have watched Carter and thought that Carter is already very strong.

After watching Bolt, I feel that Bolt is more scientific and more awesome.

But until Su Shen.

Then you will understand.

What is the charm of scientific movement?

They all did a good job.

just.

Not as good as myself.

Competitive sports.

There is a natural contrast.

There is contrast.

There are superiorities and inferiorities.

Bang bang bang bang bang.

When Su Shen's feet landed, the weight of his body and the forward momentum caused the triceps surae to contract eccentrically. This contraction force was transmitted to the Achilles tendon through the tendon, causing it to lengthen.

Bang bang bang bang bang.

The collagen fiber structure inside Suarez's Achilles tendon has good elasticity. During the stretching process, the molecular bonds between the fibers will stretch and twist, just like stretching a high-performance spring, thereby storing a large amount of elastic potential energy.

Bang bang bang bang bang.

The superelasticity of Su Shen's Achilles tendon enables it to quickly adapt to this high-intensity, high-frequency load change, effectively converting the impact force generated every time it lands into elastic potential energy. When the calf triceps muscle switches from eccentric contraction to concentric contraction, the Achilles tendon begins to rebound rapidly.

This rebound is completed almost instantly, and it releases the previously stored elastic potential energy with extremely high efficiency, providing powerful plantar flexion power for the ankle joint.

This momentum allows Su Shen to generate greater force when pushing off the ground, pushing his body forward quickly.

Su Shen continued to widen the gap with Carter.

Bolt.

even.

The first acceleration zone is ten meters.

No one got any advantage!

Carter did a good job.

However, compared with the situation without the assistance of the Achilles tendon's superelastic effect, he cannot obtain a greater reaction force from pushing off the ground with the same muscle force output.

Nor can the body achieve greater acceleration here.

I can only watch Su Shen.

Pull open forcefully.

And of course Bolt.

Bolt used to be except for the start.

Any one segment can suppress everyone.

Including Su Shen.

but.

Actually, things started to change last year.

this year.

Su Shen went one step further.

More obvious!

Usain?

come on.

Let me see how much progress you have made during winter training?

Can it.

It can’t stop my progress during winter training!

Bang bang bang bang bang.

This extra acceleration helps...Su Shen shorten the contact time of his feet with the ground!

Shortening the ground contact time is extremely essential.

Maybe many people don’t know this.

This data is the best in the world.

Not Bolt, not Suarez, not any of the Five Tigers, not even...

Not any male athlete.

That's right.

The person who does the best job with this data.

A female athlete.

Her name is "Butterfly" Joyna.

0.071s.

Yes, you would not have thought that such a key data was created by a female athlete.

but.

This is the fact.

This is done.

This allows athletes to complete a push-off action faster and enter the next step cycle.

Naturally increase your cadence limit!

Naturally, it can have a higher upper limit!

The rapid rebound of Suarez's Achilles tendon drives his calf to swing quickly.

In the acceleration zone, the increase in step frequency not only depends on the strength and speed of pushing off the ground, but is also closely related to the swing speed of the calf.

The force generated when the Achilles tendon rebounds is transmitted through the muscles and bone structure of the calf, allowing the calf to swing at a faster angular velocity.

This will prepare you for the next step of landing and stretching.

This rapid calf swing reduces the swing phase time, allowing Su Shen to place his foot into the next landing position more quickly, thereby increasing his overall stride rate.

Bolt discovered.

I actually accelerated the zone.

Can't hold Su Shen? !

Or after improving my technology again this year.

This……

how is this possible? ? ?

he.

Has it improved so much?

Nothing is impossible.

If Su Shen could hear Bolt's thoughts, he would definitely tell him...

On technology.

You are not as good as me.

On the advancement and foresight of technology.

you.

Not even as good as me.

You did very well.

That is.

My technique is just better.

Bang bang bang bang bang.

Bolt did not gain any advantage in the first ten meters of acceleration.

This allowed him to accelerate by a second ten meters.

Speed ​​up as hard as you can!

Bolt is getting faster and faster.

There is no way around this.

He is the fastest in the world.

No one can match him.

can be done.

Just try to make his suppression segmented.

Come later.

The later you come.

The more likely you are to take him down!

Bang bang bang bang bang.

Twenty-five meters!

Su Shen's plantar fascia needs to quickly and accurately transmit the ground reaction force to the whole body in order to achieve effective use of force.

The longitudinal fascia fibers are primarily responsible for transmitting vertical forces upward to the calf.

The transverse and diagonal fibers play a role in maintaining the width and stability of the arch.

The horizontal force...

Distribute evenly to all parts of the sole of the foot.

Keep going.

Bolt's pursuit is bound to become more and more fierce.

After each ten-meter segment.

Bolt will become more and more abnormal.

can.

Su Shen was ready.

The arch of the foot plays a key role in this process.

It is like a natural spring and shock absorber, which undergoes elastic deformation when subjected to force, stores energy, and releases energy during the extension phase, enhancing the propulsion of Su Shen's feet.

Then, through the force transmission of the plantar fascia, the ground reaction force on Su Shen's side can be transmitted upward along the bones and muscle structure of the leg.

This allows Su Shen's own body to better utilize this power to propel forward.

Bang bang bang bang bang.

Can't stop!

Bolt is getting faster and faster.

can.

I still have to suppress him.

This shot.

Don't give him the chance to burst out in the acceleration zone.

because……

This shot.

This area.

The outbreak.

it's me!

It’s my turn!!!

Usain!!!!!!!

Bang bang bang bang bang.

During the extension phase, the plantar fascia releases stored energy, which works synergistically with the energy released by the Achilles tendon.

Further enhances the power and effect of pushing off the ground.

This synergy allows Su Shen to generate more powerful thrust when pushing off the ground, propelling his body forward farther and faster.

In addition, plantar fascia force transmission can also optimize the movement sequence and coordination of the lower limb joints.

And in the acceleration zone.

Efficient joint movement coordination is essential to improving cadence.

I saw Su Shen in the final acceleration zone——

The plantar fascia interacts with the surrounding muscles and ligaments.

Adjust the movement angle and speed of each joint of the lower limbs.

Allow your swinging leg to swing forward and land faster in the acceleration zone.

The plantar fascia is connected to the muscles of your calf.

When it is subjected to force, it affects the contraction and relaxation of the calf muscles through the muscle stretch reflex.

Su Shen uses this to regulate the movement of the knee and hip joints.

To reduce swing time.

Allowing Su Shen to complete a step cycle further and faster.

Thereby increasing your cadence.

Combined with the super strong wind.

This was something that was only possible on the plateau before.

The first transformation to the plains began.

Then.

Usain.

This shot.

What can you use to stop me!!!

Su Shen felt a barrier of acceleration zone.

But this time.

He didn't say a word.

Lift your feet.

It breaks!

boom.

With this shot.

Super-start segmentation of humanity.

broken.

Human super acceleration segmentation.

and also.

broken.

As Su Shen raised his legs again and again.

Already shattered.

It has become history.