The Su God of the Reopening of the Sports Arena

Chapter 2425 The Secret to Hip Joint Power Limit Output!

Stockholm.

Without hesitation, Suarez accepted Bolt's challenge in Stockholm.

This match was also the last Diamond League game that Su Shen participated in before the qualifiers.

When asked by reporters, Su Shen was very direct, saying, "Please ask me this question again after this match is over."

That's a strong answer.

Everything happened after the game.

If I don't run well, then you can criticize me.

If you run well, then you don't need to ask this question anymore.

You should ask Bolt.

Because everyone is preparing for the upcoming World Championships in Beijing, everyone is doing their own thing.

They will participate in the competition.

Zhao Haohuan is the only one who is still finding his form. After all, this is only his third match this year, including the domestic challenge matches.

He definitely needs to come out and get back into form.

Second is...

The Blitzkrieg is now being hyped up.

Suarez and Bolt.

These two people definitely need to come forward.

The atmosphere is getting more and more heated.

I have no choice but to show up.

This group features Su Shen directly facing off against Blake, Zhao Haohuan, and Gatling.

As for the rest of the people...

Including players of Lemaître's caliber.

None of them are qualified to be on this list.

They're just there to make up the numbers.

Su Shen laughed loudly.

After all, many people have asked him if he felt any pressure in this match.

All Su Shen wants to say is...

No pressure.

9.55 is just like Bolt said.

It was indeed just an ordinary result.

That's just...

Forced to be full.

the reason is simple.

This achievement is an insurmountable barrier for everyone else.

An area I can't even imagine.

But for these two people...

They have entered the realm of non-human beings.

Such a terrifying score as 9.55.

In their view.

It was just an average grade.

It's to warm them up for a direct confrontation.

That's it.

Hearing Suarez say that during the interview, whether it was Blake or Gatling next to him...

It felt like my lungs had been poked.

It's simply incomprehensible.

Is that human being?
So cruel?
Who can stand this.

9.55 is just an average score...

Please, that's 9.55 seconds.

Can't you at least show some basic respect?

But when you think of their impressive record...

The horrors of 2013.

It's just a feeling...

There seems to be no problem.

The two of them said that.

It feels completely different to say these things to someone else. If another person said these things, even if they were a "breakthrough ten" (a person who has achieved a certain level of mental maturity), you would definitely think that person is crazy.

But if we switch to the other side...

Replace the two people who said this with themselves.

You'll feel that way.

Hey.

What they said didn't seem to make any real difference.

Because that's exactly what they said...

A score of at least 9.40 or higher.

I have the right to say that.

If you can't run in this range, then saying that a 9.55 time is average is just plain stupid.

Everyone will just laugh at you.

Therefore, you would say that this result is not ordinary.

It depends on whether you have the ability to do it.

If you have the ability to do it, then you can say that.

That's how ruthless you can be.

"Now let's see what Suarez can do and what kind of response he can give to Bolt."

Yang Jian from China Sports Channel was also anxiously waiting for the shot.

To be honest, since this wasn't a major tournament, winning or losing wasn't that important.

The competition is the key.

However, Suarez and Bolt are now locked in a fierce battle. Since they're on the same side, we'll definitely stand by Suarez unconditionally.

Hopefully, Su Shen can withstand the pressure.

He turned the tables on Bolt.

Don't underestimate Bolt. His shot in New York was absolutely stunning, and everyone is now eager to see Suarez's response.

Or they all want to see him.

Whether or not they can respond remains to be seen.

Su Shen landed on the fourth lane.

Next to him are Gatling and Blake.

Next to Blake is Zhao Haohuan.

It can be said that everything was arranged very clearly.

Gatlin was quite frustrated after finishing the race with Suarez in Oslo and becoming one of the least noticeable superstars in history.

thinking.

If going in once isn't enough, then I'll go in a few more times.

By then, you'll all acknowledge me, right?
In the last match, he was utterly crushed by Su Shen.

Gatlin clearly ran at the peak of his career.

They were easily outmatched by their opponents.

This feeling of powerlessness.

This was a feeling he'd never experienced before against anyone this season. Gatlin had initially thought that after another upgrade and breakthrough to new heights, he should have a chance to face these two.

It seems now.

That's complete nonsense.

It's simply impossible to do.

and so.

They immediately became much more obedient.

My goal has been refocused on breaking the 100-meter barrier again, at 9.70.

Open it a few more times.

Prove that you have the ability to score within 9.70.

That's enough.

We can't take down these two.

At least I can think about it; it's a medal, after all.

To be able to win a medal in this era.

That's the gold medal for ordinary people.

Ever since Suarez and Bolt both broke the 9.50-second barrier...

Almost everyone began to automatically transform their confrontation with them into a battle between immortals and mortals.

In other words, even if you are at the level of a giant.

Even if you can open it in 9.70 seconds.

You've only earned the qualification to compete for a bronze medal.

This is obvious.

Before Su Shen had grown up.

Usain Bolt swept all the gold medals.

No one can threaten him.

At that time, everyone came to compete for the silver medal.

Treating a silver medal as if it were a gold medal.

It was the slogan that athletes of that era almost unanimously shared.

There's no way around it, the gap is too big. Why treat a silver medal as a gold medal?
Otherwise, that would be...

Why was that guy who came in second place at the Beijing Olympics so excited?
It's because humans, as animals, are capable of weighing all aspects. And as viewers, we also make choices, and when we discover a significant gap in skill levels...

Actually, the audience doesn't expect you to create miracles.

At least until you've demonstrated the potential to create miracles.

No one will use this requirement to make demands on you.

Lemaître observed the atmosphere at the scene from Stockholm.

It is indeed very lively.

It was more exciting than I remembered the Diamond League.

The strong intervention of Su Shen's team.

It has brought about many positive effects.

Bang!
Gunfire rang out.

Game start.

Justin Gatlin, dynamic core traction, reconstructing the path of center of gravity shift.

The Gatling gun completely overturned the traditional startup logic of "core anchoring".

Instead, the "dynamic core traction" technology was adopted.

When “set”, his hands are 10 centimeters wider than his shoulders when he puts them on the ground, with his palms lightly touching the track rather than clenching them, and his shoulder and back muscles remain relaxed.

The purpose of deliberately increasing the support area is to leave more space for subsequent shifts in the center of gravity.

The hips are raised 3 centimeters lower than usual, the calf muscles maintain only basic tension, the angle between the hip and knee joints is widened to 35°, and the body's center of gravity is slightly shifted backward, breaking the traditional "forward press" preparatory posture.

At the moment the gun fires, the core muscles do not "contract alternately," but rather make a slight twist of 0.5° around the "waist and abdomen as the axis."

When the left leg pushes off the ground, the core rotates slightly to the left, smoothly transitioning the center of gravity from the back foot to the front foot; when the right leg takes over, the core returns to the right, pushing the center of gravity forward. This "dynamic torsional weight transfer" essentially utilizes the rotational inertia of the core to reduce resistance to the movement of the center of gravity.

It avoids the stiffness caused by the traditional "straight forward press".

From a biomechanical perspective, the center of gravity transfer time is shortened to 0.08 seconds, which is 5% faster than a conventional start-up, effectively compensating for the acceleration lag under light wind conditions.

The push-off action uses "instantaneous explosive force" and abandons the traditional "elastic buffer".

The moment the ball of the foot touches the ground, the ankle joint is stretched to its limit, the knee joint extends from a slight bend to 135° in 0.03 seconds, and the heel of the pushing leg is instantly raised to the mid-thigh without any power accumulation process.

The core logic of this design is to directly activate the fast-twitch fibers of the quadriceps muscle during the initiation phase, using "short-term high-intensity force" to seize the initial speed, rather than preserving elastic potential energy.

When swinging the arms, the elbow angle increases from 90° to 100°. When swinging forward, the arms go past the waist, and when swinging backward, the scapula contracts significantly, using the inertia of the arm swing to further pull the core to twist.

This forms a coordinated power generation chain of "arm swing - core - ground push".

At the 10-meter mark, Gatlin's torso leaned forward at an angle of 32°.

Although the start is steeper than a regular start, it remains stable due to core dynamic traction, and is currently in second place.

His technological restructuring successfully achieved a "balance between speed and stability" during startup without strong winds.

The Gatling gun does have its advantages.

He can run for so long.

It's definitely not just about talent.

Blake also made a change here. He abandoned the traditional approach of "refined collaboration" and instead used "neural overtuning activation" technology to seize the initiative.

When he "sets", his hands are placed on the ground at a 5° inward angle, his fingers are in a semi-bent state, and his elbows are kept at a 110° "non-standard angle".

This seemingly "irregular" posture is actually designed to shorten the path of nerve signals from the brain to the arm muscles. During the "preparation" phase, all the muscles in the body enter a "pre-excitation state," with the calf muscles exhibiting high-frequency micro-tremors and the hip joint slightly retracting, accumulating nerve impulses like a compressed spring, rather than the conventional "static tension."

After the gunshot, the central nervous system sends an "overshoot command" to the muscles:
The initiation signals for the lower limb push-off and the upper limb arm swing are issued simultaneously, and the arm swing action even starts 0.01 seconds earlier than the push-off.

From the perspective of exercise physiology, this "neural overtuning" is achieved through deliberate training to break the natural reflex of "pushing off the ground before swinging the arms," ​​allowing the upper limbs to generate inertia in advance, thereby pulling the lower limbs to exert force more quickly.

This "advanced coordination" completely overturns the traditional logic of "joint timing force exertion," compressing the time difference between action connections to near zero.

When pushing off the ground, his hip, knee, and ankle joints no longer exert force synchronously, but rather in a "step-like explosive motion":
The hip joint exerts force first and then swings back, leading to the extension of the thigh.

After 0.02 seconds, the knee joint follows through with a push-off.

Finally, the ankle joint completes the "point-and-launch" motion.

This "step-like" design is intended to allow the lower limb muscle groups to generate power in stages, starting with the gluteus maximus, then the quadriceps femoris, and finally the gastrocnemius, thus avoiding overloading of any single muscle group and allowing the ground reaction force to be transmitted in a "superimposed" manner.

When swinging the arms, the forward swing amplitude exceeds shoulder height, and the backward swing is almost close to the torso. Each arm swing is like a "whip lashing", using the forward inertia to pull the body forward.

This is one of the ultimate goals of physical talent training and development.

Actually, Su Shen originally wanted Lao Yi to pursue this path as well.

Unfortunately, the quality of Lao Yi's training was not a problem.

But as it turns out...

Even physical development.

At the end.

It also requires talent.

It requires quick comprehension.

at this point.

The balance between work and rest is still a bit lacking.

He can't compare to Yohan Blake.

Christopher Lemaitre, this white guy can also fly, and he also made adjustments, starting to go through muscle fiber graded activation.

Launching a "long-lasting" system.

The reality is that so many people are starting to change.

A person's physical and mental state is not always consistent.

It is necessary to constantly adapt to changes in one's physical condition.

This is what top athletes should do.

Athletes who break ten are all top performers.

None of them are fools.

Just ...

Can you choose the right path for reform?

The trajectory of technological upgrades. Even whether something is theoretically suitable for you is a question of whether it's practically applicable.

The technological upgrade failed.

These days.

That's the norm.

Moreover, the absence of failure does not equate to success.

Thinking this way shows a complete lack of in-depth experience in this industry, because all one knows is failure and success...

There is a third result.

That is……

The technological upgrades did not achieve the expected results.

There was no significant drop in quality due to failure.

It was unsuccessful, and the breakthrough was as expected.

It's just lukewarm.

Wasting valuable career time with little effect is a disheartening outcome.

It's even harder to accept than outright failure.

Because you still have expectations in your mind.

If it fails, just send it away; there's no lingering attachment.

Lemaître.

This place is a typical example.

Lemaître designed a "muscle fiber graded activation" activation technology to address his low proportion of fast-twitch muscle fibers, completely abandoning the strategy of "blindly pursuing speed".

During the preparation, his body center of gravity shifted significantly backward, his hands gently supported him on the ground, and his shoulder and back muscles were completely relaxed, even slightly drooping.

This "atypical" posture is designed to reduce the amount of muscle involvement during the initiation phase.

One second before activation, the calf muscles only activate slow-twitch fibers, while fast-twitch fibers remain in a "dormant state".

The hips were raised 8 centimeters less than the previous two contestants.

Keep your core muscles in a "low-tension" state to avoid premature energy consumption.

After the gunshot, it is expected that the lower limb push-off will be primarily driven by slow-twitch muscle fibers, with only 30% of fast-twitch muscle fibers being activated.

When the ball of the foot touches the ground, the ankle joint uses the continuous force of slow muscle fibers to cushion the impact, the knee joint flexion and extension range is controlled at 120°, and the heel of the kicking leg does not go beyond the mid-thigh. The whole process is not "explosive" but more like a "smooth transition".

From a physiological perspective, this "tiered activation" is achieved through neural control, which prioritizes the activation of fatigue-resistant slow-twitch muscle fibers, while reserving fast-twitch muscle fibers for the acceleration zone.

Ultimately, this will achieve "peak energy consumption".

You can't say the idea is bad.

The idea is good.

It also addresses the fact that white athletes are naturally the weakest in terms of explosive power, but...

Again.

Just because you're good at the theory doesn't mean you can succeed.

After all, many theories are just theories; there are no concrete ways to implement them. Unless you're like Su Shen, able to directly copy successful methods and immediately move on to the next one if one doesn't work.

There is no such scientific understanding.

The emergence of risk.

It will inevitably exist.

can only say……

You can't say Lemaître's technical improvements were a failure.

can only say.

The effects of the reforms.

how to say.

Very general.

The original intention was to make the arm swing movement "minimize energy consumption", with the elbow angle fixed at 105°, the arm swing amplitude controlled within 10 centimeters on both sides of the body, the forward swing not exceeding the waist, the backward swing not touching the back, the shoulder blades hardly participating in the force, and the arm swinging naturally by its own weight.

The core logic of this design is to minimize upper limb energy consumption during the initial phase, allowing energy to be concentrated in the lower limbs for "smooth acceleration." Simultaneously, his torso lean angle is only 25°, far lower than the previous two competitors, further reducing wind resistance and the energy required to maintain core balance.

pity.

Specific implementation process.

Lemaître couldn't do that perfectly.

Then problems will naturally arise.

In hindsight, judging from Su Shen's perspective—

Lemaître's "minimize energy consumption" swing arm and low forward tilt angle launch design have three main drawbacks: limited speed limit, low balance tolerance, and poor smoothness of transition.

The fundamental problem is the inherent weakness resulting from the technological choice of "sacrificing explosive power for extended battery life".

The core issue in swing arm design.

Speed ​​potential was "actively suppressed".

For example, there is a lack of propulsion and insufficient acceleration at startup.

One of the core functions of the arm swing is to assist the lower limbs in generating force through "upper limb inertial traction". However, its design of "scapula not participating and swinging only by the weight of the arm" completely abandons the forward traction force of the arm swing on the body.

When a regular athlete starts, the traction force generated by the swing arm contributes 10%-15% of the forward kinetic energy, while Lemaître's kinetic energy is almost zero, resulting in an acceleration that is 8%-10% lower than Gatlin's and Blake's.

The speed at a 10-meter node is generally 0.1-0.2 meters per second slower.

On the Stockholm circuit, it is difficult to gain an early lead.

Secondly, there is a gap in movement coordination, which limits the improvement of step frequency.

An efficient sprint start requires "millisecond-level coordination between arm swing and push-off," with the left arm swinging forward corresponding to the left leg pushing off the ground being one example.

His design of "fixed 105° angle and small swing" makes it difficult to match the rhythm of arm swing with the rhythm of lower limb push-off.

When the lower limbs attempt to increase their stride frequency, the arm swing is too small to accelerate synchronously, resulting in a coordination gap of "lower limbs fast, upper limbs slow," thus locking the upper limit of stride frequency.

The disadvantage of step length cannot be compensated for by step frequency.

At the same time, the core drawback of a low torso forward tilt angle is the dual contradiction between balance and acceleration.

With the center of gravity positioned at the rear, the utilization rate of the reaction force from pushing off the ground is low.

The forward tilt angle of the torso is much lower than the 30°-32° of a normal start, resulting in the body's center of gravity being excessively backward.

From a biomechanical perspective, a rearward center of gravity causes the "force line direction" when pushing off the ground to be more vertical rather than horizontal.

The ground reaction force is converted more into "upward support force" rather than "forward propulsion force". The utilization rate of reaction force drops from the usual 85% to below 75%, which is equivalent to wasting 10% of the force efficiency with each step, further reducing the starting speed.

Of course, if you have Su Shen, no, let alone Su Shen, even if you have Carter's burst damage.

In fact, all disadvantages can be turned into advantages.

This could actually become an advantage.

but……

What do you think about Lemaître, who is of white origin?

is it possible?
impossible.

Therefore, if he forces himself to do this, his body's center of gravity will be at an "unstable critical point" with a low forward lean angle.

When encountering minor bumps on the track or slight crosswinds, even at speeds as low as 0.9 m/s, his center of gravity tends to sway from side to side. In order to reduce energy expenditure, he deliberately weakens his core tension, making it impossible for him to quickly correct the center of gravity deviation.

In actual combat, the rhythm may become disordered, with "strides becoming larger and smaller", and even extra energy may be needed to maintain balance, which would contradict the original intention of "minimizing energy consumption".

Therefore, Lemaître can only be described in two words—

If revised.

Zhao Haohuan did a good job.

A Diamond League match.

An international challenge in the capital city.

It made him feel much better.

The bent-arm start technique is gradually returning to normal.

He just needs to be in full form before the World Championships in Beijing.

There is no rush.

accelerate.

Justin Gatlin began working on core fixation and hip rotation to create "spiral acceleration".

This is starting to resemble Guy's style.

At least some of Guy's technical characteristics have been incorporated.

and.

Gatling guns are indeed technically excellent.

Very well done.

Otherwise, he wouldn't have outlasted Bolt, who was a generation younger than him, from Green's era.

Bang bang bang bang bang.

After 10 meters, Gatlin's "dynamic core" was upgraded to a "fixed-axis swing" mode, with his abdominal muscles using the spine as the axis to form a "left-right alternating swing" power generation rhythm.

When pushing off with the left leg, rotate the core 5° to the left, causing the left hip to lift slightly forward and upward.

When the right leg exerts force, the core swings back to the right, and the right hip propels forward, making the entire torso resemble a "spinning top," maintaining stability while generating a forward spiral force. From a biomechanical perspective, this "core swing" can integrate the horizontal force of pushing off the ground with the vertical force of lifting the hips, forming a "diagonal propulsive force."

It can effectively increase step length.

This avoids the impact of ground reaction force when applying force in a straight line.

The push-off motion is linked to the depth of hip rotation: when the left hip is raised, the flexion and extension range of the left knee joint increases to 145°, and the ankle joint pushes off slightly to the upper left, using the inertia of hip rotation to amplify the push-off effect.

When the right hip is thrust forward, the landing angle of the right leg matches the trajectory of the hip rotation, and the reaction force at the moment the foot touches the ground is directly converted into the power of the core rotation.

This coordinated "push-swing" motion creates a "superimposed effect" in the propulsive force of each step, resulting in subtle upgrades in both stride length and stride frequency.

The swing arm is synchronized with the core rotation rhythm: when the core rotates to the left, the left arm swings back with a larger amplitude, and the right arm swings forward in a direction that deviates to the left.

When the core rotates to the right, the right arm swings back to generate force, while the left arm extends forward at an angle adjusted to the right. The elbow angle dynamically changes between 95° and 105° according to the rhythm of the rotation.

This "asymmetrical arm swing" completely breaks the conventional logic of "symmetrical arm swing," further stabilizing the core swing through the inertia of the arm and avoiding the body imbalance that swing may cause.

At the 25-meter mark, Gatlin successfully pinned Blake, keeping his torso swing at a stable 5°-8° without any excessive twisting or loss of control.

His "spiral acceleration" technology achieves a "dual improvement in speed and efficiency" even in a light breeze, fully demonstrating the advantages of technological reconstruction.

Gatling did a great job this time.

Even Randy thought...

Quite good.

To be able to return to one's peak at an advanced age, or even surpass it, requires considerable skill; otherwise, it's simply impossible.

The Gatling gun does have an advantage in this respect.

As for Su Shen, he would definitely take the lead from the start.

The Golden Three Steps.

Bang bang bang.

The initial velocity advantage is established by "efficient transmission of ground reaction force + hip joint driving force".

Christopher is 10 meters behind.

The "muscle fiber graded activation" process has entered the "fast muscle intervention" stage, where slow muscle fibers gradually withdraw from dominance, and the activation ratio of fast muscle fibers gradually increases from 30% to 60%.

At 15 meters, fast-twitch muscle fibers are involved in the push-off force, the knee flexion and extension range increases to 135°, and the stride length increases to 1.8 meters; after 20 meters, the activation rate of fast-twitch muscle fibers exceeds 50%, the ankle joint push-off force is significantly enhanced, the heel of the push-off leg is raised to near the buttocks, and the stride length is further increased.

This "progressive activation" is achieved through neural control, allowing fast-twitch muscle fibers to participate in force exertion in a "gradient" manner, thus avoiding rapid fatigue caused by a single high-intensity activation.

The core muscles are simultaneously engaged in a "step-by-step" tensioning process. At 10-15 meters, the tension in the waist and abdominal muscles increases to 40%, maintaining only a basic balance.

At 15-25 meters, the tension increases to 60% and begins to participate in force transmission.

At a distance of 25-30 meters, the tension reaches 80%, forming a "semi-rigid" transmission channel that efficiently delivers the force generated by the fast-twitch muscle fibers in the lower limbs to the whole body. This "synchronous progression of core and muscle fibers" design ensures that the force transmission path can adapt synchronously when the force intensity increases, avoiding "transmission breaks caused by a sudden increase in force".

The energy distribution between pushing off the ground and swinging the arms is gradually adjusted.

At 10 meters, the lower limbs account for 70% of the force and the upper limbs account for 30%; at 30 meters, the lower limbs account for 85% of the force and the upper limbs account for 15%, and the arm swing amplitude is further reduced, with the goal of "maintaining balance".

This "energy concentration" strategy focuses the limited energy of fast-twitch muscle fibers entirely on the lower limbs pushing off the ground, maximizing the acceleration effect.

Ok……

It's just a pity.

This is all thanks to Lemaitre and his team.

As I imagined it to be.

In fact.

None of them were accomplished.

They have already been quickly separated.

There was simply no way to join the earlier matchup.

Poor white people can fly too.

White people first.

But it's here.

So embarrassing.

So ugly.

This finally stirred up the white sprint climax...

It quickly turned into a low point.

People are paying less and less attention to themselves.

White people started to increasingly entertain themselves on the 100-meter track.

Blake then began to exert his strength. Although he was not as good as Gatling at the beginning, he gradually stopped his decline in the acceleration zone.

Ten meters later, Blake's "neural overshoot" technique faced the test of "rhythm loss of control," and he maintained his advantage by relying on "real-time neural feedback error correction."

The forward arm swing during the initiation phase can easily lead to "excessive upper limb movement and lagging lower limb movement" in the acceleration zone, thus causing his nerve center to continuously receive "tension signals" from the muscles.

When the arm swing frequency exceeds the step frequency by 0.1 steps per second, the brain immediately sends a "frequency reduction command".

The contraction strength of the deltoid muscle decreases, and the arm swing amplitude narrows from past the shoulder to the waist.

When the force of pushing off the ground decreases, nerve signals quickly activate the fast-twitch fibers of the quadriceps femoris to replenish the force.

This is precisely the point that cannot be overcome by the combination of work and rest.

From the perspective of motor control principles, this "real-time feedback error correction" is achieved by sensing changes in muscle tension through muscle spindles and tendon organs, transmitting signals to the spinal cord and brain, and then having the brain issue adjustment instructions. The entire process takes only 0.03 seconds, which is close to the physiological limit of neural response.

The advantage of this technology is that it can quickly correct movement deviations, but the disadvantage is that it puts a huge burden on the central nervous system and can easily lead to subsequent fatigue.

However, Blake's body has a high resistance to fatigue.

Extremely high.

Otherwise, the strongest finish in the 200-meter dash in human history would still be a powerful gap.

You thought it was a joke.

Even Bolt couldn't compete in this aspect.

The push-off motion has shifted from a "stepped burst" to a "synchronized force exertion".

The time difference between the hip, knee, and ankle joints in exerting force is reduced from 0.02 seconds to 0.01 seconds, reducing the loss in the transition between movements. At the same time, the range of motion of the knee joint is stabilized at 140°, avoiding muscle tension caused by excessive extension.

When swinging the arm, the elbow angle is fixed at 90°, and the swing frequency is controlled by adjusting the contraction strength of the scapula.

Ensure that the deviation from the step frequency does not exceed 0.05 steps/second.

"Su is still in first place! Let's see if there are any new developments during the race!"

Variety?

What changes?
Su Shen remained unmoved.

40 m.

Optimization of the timing of hip muscle activation.

Maximize the use of the hip muscle lever arm.

50 m.

The symmetrical cancellation of the angular momentum of the upper and lower limbs.

Stable control of the trunk in a neutral position.

Suppress "forward leg swing".

then.

And so began Su Shen's performance.

Extreme speed.

Hip joint.

Maximum output.

That's what he needs to do now.

He wants to take this place.

Push it to the limit.