The Su God of the Reopening of the Sports Arena

Chapter 2441 Crazy Results! Usain, can you withstand this shot?!

If we say that the core hub is the three-dimensional optimization principle of "force-time-efficiency" for the hip muscles.

The transmission path is based on the mechanical constraint principle of the joint's "rigid support".

If we compare the hip to an "engine," then the knee, ankle, core, and other parts are the "drive shafts," and their "rigidity" directly determines the degree of power loss during transmission.

"Rigid support" does not mean that the joints are completely fixed, but rather that "controllable stiffness" is formed through isometric contraction of muscle groups to ensure that the ground reaction force is efficiently transmitted along the mechanical axis and to avoid energy leakage due to excessive joint deformation.

Suarez's burst of power in those six seconds was incredibly strong, even stronger than his performance in Moscow in 2013.

Although it can't compare to Bolt's terrifying ability to unleash a fourth phase in six seconds.

but……

It has definitely reached a higher level.

At this point, something else is needed to continue his strategy.

This is the strategy.

It will not only erupt, but it will be even more ferocious.

Moreover, the outbreak will last for an even longer period of time.

This is what makes it "both pornographic and violent".

That's what Su Shen wanted too.

In order to achieve this goal.

Therefore, it is essential to ensure the proper control of the graded rigidity of the lower limb joints, which is a crucial safeguard for the transmission pathway.

The moment of impact.

At this moment, the vertical component of the ground reaction force is 3-4 times the body weight of Su Shen.

At this time, the knee joint needs to maintain a stable angle of 82°-84°.

This "narrow stance" is achieved through isometric contraction of the quadriceps and hamstring muscles.

Su Shen used the quadriceps to provide outward support and the hamstrings to provide inward restraint, controlling the time difference of their electromyographic activity within 0.003 seconds to form a "rigid lock" on the knee joint.

Avoid force transmission dispersion caused by excessive joint flexion.

The ankle joint maintains a fixed dorsiflexion posture of 18°-20° through the coordinated contraction of the triceps surae and tibialis posterior muscles, ensuring that the force on the sole of the foot is concentrated on the forefoot.

This increases the proportion of horizontal propulsion from 35% for ordinary athletes to over 50%.

Reduce ineffective energy consumption in the vertical direction.

This is the graded rigidity control of lower limb joints.

Then there's the "torque balance" of the core muscle groups.

Its function is to act as a central stabilizer in the transmission pathway.

During the highest speed phase, the lower limbs swing at high speed with an angular velocity of 14-15 rad/s, generating a lateral torque of 12-15 N·m.

If the core muscles do not provide sufficient support, the torso will sway slightly at a frequency of 2-3 Hz, resulting in a 10%-15% decrease in the efficiency of force transmission.

At this time, the core muscle group will build rigid support through the "instantaneous torque counteraction" mechanism.

When the right lower limb swings forward and generates a clockwise torque, the left external oblique muscle contracts rapidly within 0.01 seconds, generating a counterclockwise compensating torque of equal magnitude.

Keep the degree of trunk tilt within 0.2°.

Ensure that hip power is transmitted vertically along the midline of the torso.

No lateral leakage.

This way.

Vertical force.

Naturally, it will be higher, faster, and stronger.

Su Shen's speed went berserk.

The speed is fast, there's not much to say about it.

After all, he's the fastest one.

The key is how to maintain this speed and slow down the decline as much as possible.

Delay it as much as possible, even by 0.5 seconds.

Even 0.1 seconds.

For the 100-meter event...

They are all completely different effects.

What's more.

How could Su Shen only care about this?
50 meters later.

Connection mechanism.

Su Shen adopts the principle of "gap-free" power continuation through pedal-swing conversion.

This means that the step frequency at the highest speed stage can reach more than 205 steps per minute, and the support time for each step is only 0.025-0.03 seconds. "Rigid transmission" requires that the conversion between pushing off the ground and swinging should achieve "seamless power connection".

Avoid power loss due to disjointed movements.

The core of this process is the mechanical and neural coordination between the "final stage of the supporting leg extension" and the "initial stage of the swinging leg forward swing".

From the perspective of energy continuity in mechanical connection, the transition from kicking to swinging depends on "reuse of the elastic potential energy of the supporting leg" and "connection of the inertial kinetic energy of the swinging leg".

In other words, when the supporting leg enters the final stage of push-off, the tendons of the gluteus maximus and triceps surae are still in a stretched state. Part of the stored elastic potential energy propels the body forward, while the other part is transmitted to the iliopsoas muscle of the swinging leg through the rapid flexion and extension of the hip joint, providing initial kinetic energy for the forward swing of the thigh.

This "energy transfer across links" can reduce the energy loss during the leg kick-swing transition from 22% in previous training to a maximum of less than 8%.

To achieve "rigid continuity" of power.

The speed has picked up.

Bang bang bang bang bang.

It quickly reached its maximum value.

then.

That's where the test begins.

The principle of "fine balance" for angular momentum control has been put into practice.

During the highest speed phase, the angular momentum of the upper and lower limbs needs to maintain a "coupled resonance" state. The core of this is to maintain the optimal ratio of 1:1.5 in the swing angular velocity of the upper and lower limbs through rapid feedback regulation of the neuromuscular system, with the lower limbs at 14-15 rad/s and the upper limbs at 9.3-10 rad/s.

Ensure that the overall angular momentum vector of the body is controlled within ±0.2 kg·m/s.

This mechanism follows the "law of conservation of angular momentum". When the lower limbs increase their angular momentum due to the increase in speed, the upper limbs need to increase their swing angular velocity simultaneously.

The change in the angular momentum of the lower limbs is offset by increasing the angular momentum of the body itself.

Avoid causing rotational imbalance in the body.

This is called "coupled resonance" of the angular momentum of the upper and lower limbs!
From a biomechanical response perspective, the response time of the upper limb to changes in the angular momentum of the lower limb needs to be shortened to within 0.015 seconds, which relies on the rapid pathway of "proprioception-nerve conduction-muscle contraction".

The signal of angular momentum change generated by the swinging of the lower limbs is transmitted to the spinal cord through muscle spindles and tendon organs. After being processed by the motor cortex, it is sent to the upper limb muscle group within 0.008 seconds, driving the deltoid and pectoralis major muscles to contract rapidly and adjust the swinging speed of the upper limbs.

Test data from Suarez's training showed that for every 0.005-second increase in response time, the coupling coefficient between the upper and lower limbs decreased by 0.08.

The body rotation angle increased by 0.15°.

Energy loss increased by 2.5%.

60 m.

The "coupled resonance" of the angular momentum of the upper and lower limbs alone is certainly not enough.

He's moving too fast right now.

It's beyond what ordinary technology can match.

Maintaining such speed, even by just 0.1 seconds, would require even more advanced scientific theories and technologies that are interconnected and work together to achieve this.

What Su Shen is doing here is...

The principle of "zeroing control" of trunk angular momentum is utilized.

Because the "zeroing control" of trunk angular momentum is the key to efficient energy utilization during the highest speed phase, the principle is to compensate for the instantaneous torque generated by the swinging of the limbs in real time through the "graded activation" of the core muscle groups, so that the trunk angular momentum is stabilized at 0.1-0.2 kg·m/s.

From a mechanical perspective, the angular momentum (L) of the torso is determined by the moment of inertia (I) and the angular velocity (ω), i.e., L = Iω.

To achieve "zero-level control".

When the angular momentum of the limbs changes, the rotational inertia of the trunk needs to be altered by adjusting the contraction intensity of the core muscle groups, or by generating a reverse angular velocity to counteract the inertial rotation.

Simply put, during high-speed maneuvers, when Su Shen's right lower limb swings forward and generates angular momentum to the right, the left erector spinae and right rectus abdominis muscles are activated simultaneously.

Contraction of the left erector spinae muscles increases the rotational inertia of the trunk to the left.

The contraction of the right rectus abdominis muscle generates an angular velocity to the left.

The two work together to keep the trunk's angular momentum in balance.

Biomechanical simulations at the Sussin Sports Laboratory show that...

For every 0.3 kg·m/s increase in trunk angular momentum.

The stride width will increase by 2-3cm.

The lateral energy loss increases by 3J per step.

After accumulating 100 meters, the speed decreases by more than 0.3 m/s.

As Su Shen took each step, his swinging leg swung forward from the back position at the end of the support phase. His thigh flexed around the hip joint, and his lower leg folded around the knee joint, creating angular momentum around the sagittal axis of his torso.

When the right lower limb swings forward, it generates clockwise angular momentum; when the left lower limb swings forward, it generates counterclockwise angular momentum. The two alternate within the period, forming a fluctuation in longitudinal angular momentum.

The arms swing back and forth around the shoulder joints, with the arms narrowing inwards when swinging forward and extending outwards when swinging backward. This asymmetrical arm swing trajectory generates angular momentum around the coronal axis of the torso.

When the right arm swings forward and the left arm swings backward, the torso experiences a coronal angular momentum to the right.

Conversely, it is subject to coronal angular momentum to the left.

At the moment of transition between the supporting leg and the swinging leg, the body's center of gravity will briefly shift. The horizontal and vertical forces of the supporting leg's extension form a couple, generating rotational angular momentum around the vertical axis of the torso.

If the core muscles fail to compensate in time, this instantaneous angular momentum can cause a slight twisting of the trunk.

This is what is called—

The longitudinal angular momentum of the lower limb swing.

The coronal angular momentum of the upper limb swing arm.

The instantaneous angular momentum that supports the transformation.

These three factors together constitute the main source of angular momentum.

Then comes the advanced stage.

"Zeroing control".

Open!
According to the angular momentum formula L=Iω, the control logic in the highest speed stage can be divided into two main paths: "moment of inertia adjustment" and "angular velocity cancellation".

Su Shen hopes that the two can be achieved synergistically through the "graded activation" of the core muscle groups.

First rotational inertia adjustment path.

The core muscles change the shape of the trunk by contracting, thereby adjusting the moment of inertia. When the limbs generate a large angular momentum, the deep core muscles contract rapidly, causing the trunk to change from a "relaxed state" to a "rigid state". The physiological curvature of the spine decreases, the cross-sectional area of the trunk shrinks, and the moment of inertia decreases accordingly. Thus, without changing the angular momentum, the fluctuation of angular velocity is reduced.

The second angular velocity cancels out the path.

The superficial core muscle groups generate opposing torques based on the direction of the angular momentum of the limbs, creating opposing angular velocities to counteract inertial rotation. For example, when the right lower limb swings forward, generating clockwise longitudinal angular momentum, the left erector spinae muscles contract strongly, producing a counterclockwise torque on the trunk. Simultaneously, the right rectus abdominis muscles contract, originating from the pubic symphysis and inserting at the xiphoid process of the sternum, further reinforcing the opposing torque. The combined torque of these two forces brings the trunk's angular velocity close to zero.

The result is what you see right now...

The "zero-speed control" technology at the highest speed stage showcases the details of the movements.

During the peak speed phase of the 100-meter sprint, "zero-speed control" is not an abstract mechanical concept.

Instead, it is presented concretely through specific body postures, limb coordination, core strength and other technical movements, with each movement detail corresponding to a clear biomechanical control target.

Although when Su Shen first brought it up, even Randy and Ralph Man were full of questions.

Because they had never heard of this word before.

It's normal not to have heard of it.

This is based on the front swing reset technology system.

When Ralph Mann passes away in 2025.

It's all just a guess.

This truly includes its formal application in actual track and field training in the future...

That was many years later.

only.

Su Shen.

He is the one who restarted.

Naturally, all these knowledge systems are deeply ingrained in my mind.

65 m.

The torso posture during the highest speed phase is the foundation of "zero-gravity control".

The core requirements are "dynamic stability and rigid transmission".

During the process, Su Shen leaned forward at an angle that aligned with his spine.

Maintain a 5-8 degree forward tilt of the torso, achieved by hip flexion rather than lumbar flexion.

Viewed from the side, the head, cervical vertebrae, thoracic vertebrae, and lumbar vertebrae are in a straight line, and the earlobe is on the same vertical line as the acromion, hip joint, and knee joint.

This posture allows the core muscles to be in a "pre-tension state," reducing compensatory curvature of the spine, lowering rotational inertia, and ensuring that the ground reaction force is transmitted in a straight line along the spine, preventing energy from being dispersed during transmission.

Next is the fixation of the pelvic position.

Sustained isometric contraction of the core muscles, especially the transverse abdominis and gluteus medius, will keep the pelvis in a "neutral position".

That is, the anterior superior iliac spine and the pubic symphysis are on the same horizontal plane.

This prevents anterior pelvic tilt, ensuring the anterior superior iliac spine is higher than the pubic symphysis.

Or it may tilt backward, causing the anterior superior iliac spine to be lower than the pubic symphysis.

A neutral pelvic position helps stabilize the movement trajectory of the hip joint and reduces the extra angular momentum generated during lower limb swing.

It also provides stable attachment points for the erector spinae and rectus abdominis muscles, improving torque output efficiency.

Then comes the relative fixation of the shoulders and torso.

The shoulders maintain a "shoulders down, chest out" state through the contraction of the rhomboid and middle trapezius muscles, and the angle between the acromion and the torso is kept stable at 15-20 degrees, avoiding the shoulders from rising and falling or swaying from side to side with the arm swing.

Shoulder stability reduces the coronal angular momentum generated by upper limb arm swing, while ensuring that the force point of the arm swing is concentrated at the shoulder joint, thus improving the coordination of the arm swing.

Since arm swing coordination has been mentioned, then...

70 m.

Control of the movement trajectory and angle of the swing arm.

They went on stage at the same time.

Su Shen swings his arms back and forth around the shoulder joints. When swinging forward, his arms move along the sagittal plane on both sides of his body. The angle of his elbow joint gradually decreases from 130-155 degrees at the end of the back swing to 75-90 degrees at the top of the front swing. The height of his palms reaches the level between the tip of his nose and his chin.

As you swing back, the angle of your elbow joint gradually increases, and the height of your palm reaches 20-30cm behind your hip joint.

This trajectory design allows the angular momentum generated by the swing arm to be in the opposite direction to the angular momentum of the lower limb swing, forming a "diagonal balance".

When the right lower limb swings forward and generates clockwise angular momentum, the left arm swings forward and the right arm swings backward and generates counterclockwise angular momentum, which cancel each other out.

The arm swing speed and step frequency began to synchronize.

During the highest speed phase, the arm swing frequency and step frequency are strictly synchronized at a 1:1 ratio, with each step corresponding to one complete arm swing cycle, and the angular velocity of the arm swing is stable at 30-35 rad/s.

This synchronicity is achieved through the neural coordination control of the arm swinging muscle groups such as the pectoralis major and latissimus dorsi, and the lower limb swinging muscle groups, via the "diagonal nerve innervation pattern" of the central nervous system.

Ensure that the timing of force exertion in the upper and lower limbs is precisely matched to avoid angular momentum fluctuations caused by misalignment of arm swing and stride frequency.

Next is the graded adjustment of arm swing force.

That is, the arm swing force will be adjusted in real time according to the changes in the intensity of the lower limb swing.

When stride length increases and lower limb angular momentum increases, the contraction strength of the arm swinging muscles increases, and the arm swing amplitude increases slightly.

To generate a larger reverse angular momentum.

When the stride is stable, the arm swing force should be maintained at 70-80% of the maximum contraction strength to avoid energy waste caused by excessive force.

The effect presented in the actual gameplay footage became—

Su Shen's arm swing movements are characterized by being "compact, powerful, and symmetrical".

The arms swing along the sides of the body without any lateral movement; the forward and backward swings are symmetrical and the speed is uniform.

It forms a "pendulum-like" movement that coordinates with the leg's pushing and swinging motion.

This visual harmony is precisely...

The "zero-control" is a direct manifestation of the balance of angular momentum between the four limbs.

75 m.

Su Shen has now surged to the front, and no one can threaten him. He never intended to compete with anyone in this match.

He only has one competitor in this competition.

That is locking the enemy from a distance.

It was another flash of lightning at that time.

Usain Bolt.

And he believes it.

When Bolt was racing against those people, he had the exact same thoughts as himself.

The two people have similar ideas.

It appears to be a race against athletes on the other seven tracks.

But actually, for the two of them right now...

No matter who you're running with.

In truth, deep down...

It's all with him.

In the duel.

A battle fought remotely.

Bang bang bang bang bang.

As the speed is maintained, the distance run continues to increase.

Maintaining extremely high speeds becomes increasingly difficult at this point.

Fortunately.

These were all within Su Shen's expectations.

Immediately employ the lower limb kick and swing technique.

To control the source of angular momentum in order to "reduce inertia and increase efficiency".

Because the lower limbs are the main source of trunk angular momentum.

Therefore, lower limb techniques at the highest speed stage should not only pursue propulsion, but also control the magnitude of angular momentum generation through "inertia reduction and efficiency enhancement".

Otherwise, it would be "zero-control".

I'm afraid this is the most we can hold out for.

It cannot continue.

Of course, that's not what Su Shen wants to see.

After the supporting leg extends, the swinging leg quickly performs an "active fold".

膝关节屈曲角度从蹬伸末期的160-170度快速减小至折迭顶点的40-50度，脚跟接近臀部，小腿与大腿的夹角控制在30-40度。

This folding motion can significantly reduce the rotational inertia of the swinging leg, increasing the swing angular velocity to 25-30 rad/s, while reducing the amplitude of angular momentum generated during the swing.

In other words, during the forward swing, the hip flexor muscles exert force to swing the folded swinging leg forward along the sagittal plane.

Avoid swinging outwards to reduce the angular momentum generated in the coronal plane.

Next, when the supporting leg lands, the inside of the foot contacts the ground first, then transitions to the entire foot, with the landing position 30-40cm in front of the body's center of gravity. The knee joint maintains a slight bend of 15-20 degrees, forming a "cushioning support".

When pushing off, the hip, knee, and ankle joints exert force sequentially. The direction of the push-off is consistent with the forward lean of the torso, and the angle with the horizontal ground is about 55-60 degrees. This avoids excessive vertical force, which can cause fluctuations in the center of gravity.

This push-off technique can increase the forward component of the ground reaction force to 75-80%, while reducing the rotational torque caused by deviation in the push-off direction.

After completing all of these steps, focus on posture control during the airborne phase.

They also started operating simultaneously.

During the airborne phase, the swinging leg and the supporting leg maintain a symmetrical folding posture, with the angle between the two legs remaining stable at 80-90 degrees, avoiding an asymmetrical situation where one leg swings too far forward and the other leg swings too far backward.

This symmetrical posture allows the overall angular momentum of the lower limbs to cancel each other out, reducing rotational interference to the torso.

To professionals, Su Shen's movements at this moment were characterized by "full folding, active forward swing, and stable landing."

When the swinging leg folds, the heel is close to the buttocks; the forward swing is light and quick; and the body's center of gravity transitions smoothly upon landing without significant lateral shift or vertical undulation. This technical performance is achieved by controlling the source of angular momentum in the lower limbs...

This lays the foundation for "zero-scale control" of the torso!

80 m.

Zhao Haohuan also realized the intention of the guy in front of him.

but.

You are a promising candidate.

Maintaining even a fraction of the speed here would be difficult.

Besides, you're the type with an extremely promising future.

What would you do?

Can you do it?

Zhao Haohuan was the closest bystander.

Besides my own breakthrough tasks and status checks, the thing I most want to see is...

Of course, it's about how Su Shen will face this difficult problem.

But of course, Su Shen had thought of all of these things before.

The core muscle groups are regulated through "graded activation and instantaneous compensation".

The core muscle group is the main executor of "zero-scale control" of trunk angular momentum, which is important for maintaining speed.

Then this place is indispensable.

85 m.

The biomechanical coupling mechanism of "zero-control" technology.

The "zeroing control" of torso angular momentum during the highest speed phase is not the result of a single technical maneuver.

Rather, it is a "multi-linked coupling system" formed by the trunk, upper limbs, and lower limbs at the biomechanical level.

Each stage involves the transmission and feedback of force.

Achieve dynamic equilibrium of angular momentum.

At 85 meters, the speed drop became even more drastic. At this point, Su Shen was already completely unable to maintain any significant top speed.

but.

This year's Su Shen.

Of course, we came with a solution.

The biomechanical coupling mechanism of "zero-control" technology is one of the answers to this difficult problem.

As long as you can answer correctly.

This will undoubtedly significantly reduce the distance to within 15 meters in the last 20 meters.

The process of high-speed deceleration.

Torque transmission coupling between the trunk and upper limbs!
The counter-torque generated by the upper limb swing needs to be efficiently transmitted to the core through the connection structure between the shoulder and the torso.

Only then can the angular momentum of the torso be offset.

This process relies on the rigid coupling of the scapular girdle and thoracic spine. Instability at this point is the primary and most obvious sign, so the first step is to…

Try to stabilize your unstable body as much as possible.

It's unstable, and the energy expenditure from running at high speeds is too great.

So……

Stable anchoring of the shoulder girdle.

After 80 meters, the final sprint zone begins.

The rhomboid and middle trapezius muscles fix the scapula to both sides of the thoracic vertebrae through isometric contraction, forming a "rigid connection" between the scapular girdle and the thoracic vertebrae. At this time, the movement trajectory of the shoulder joint is strictly limited to the sagittal plane, and the torque generated by arm swing is not dispersed by the sliding of the scapula, but is directly transmitted to the core area through the thoracic vertebrae.

Biomechanical calculations show that when the scapular girdle is stable, the efficiency of transmitting arm swing torque to the trunk can reach 85%-90%.
If the shoulder girdle is loose, the transmission efficiency will drop to below 60%!

This directly leads to insufficient reverse torque.

Things have stabilized somewhat.

But it's not enough.

The coordinated effort of the chest and back muscles!
We have to continue!

Su Shen passed the 80-meter mark in one go.

New technological changes will be made.

During the forward swing, the clavicular part of the pectoralis major muscle contracts to generate a forward pulling force, while the upper part of the latissimus dorsi muscle contracts synchronously to generate a backward restraining force. The force couple formed by the two keeps the shoulder joint in a stable range of motion during the swing.

During the backswing, the lower trapezius and teres major muscles work together to control the speed and angle of the arm's backswing.

This coordinated effort not only ensures the precision of the arm swing, but also transmits real-time information about the angular momentum of the limbs to the core through changes in muscle tension.

It provides feedback signals for the graded activation of the core muscle groups.

In other words, stable coupling of the scapular girdle is characterized by "the shoulder always maintaining a relatively fixed position with the torso".

No matter how frequently the arms swing, the relative distance between the acromion and the spinous process of the thoracic vertebrae remains unchanged.

There was no phenomenon of the shoulder moving up and down or shifting left and right with the arm swing.

This stable state is a direct reflection of the efficient transmission of torque.

That naturally saves physical strength and energy.

Let Su Shen be here.

More sustained than ever before.

More durable.

Even more of a real man!!!

Bang bang bang bang bang.

90 meters!
Surprisingly, Su Shen's deceleration here was much less than expected. Many people may be so focused on body shaping that they overlook this detail.

But Zhao Haohuan was the closest to him.

On the contrary, he was the first person to sense something was wrong.

he.

The speed drop seems to have decreased significantly.

No, it's not just that there's been a significant reduction.

It should be said that...

Too few.

a lot of.

There are so many!
The last ten meters.

Zero-level control.

It must be done well.

Finally, we reached the ten-meter mark for advancement.

"Inertial compensation coupling" between the trunk and lower limbs.

As fatigue continued to increase.

What Su Shen wanted was—

The angular momentum generated by the lower limbs pushing off is the main source of trunk angular momentum, so the core of the coupling between the two is the dynamic balance of the "hip joint-pelvis".

Angular momentum can be compensated by adjusting the ratio of the rotational inertia of the lower limbs to that of the trunk.

Adjustment of the "universal joint" of the hip joint.

The hip joint, as the connecting hub between the lower limbs and the trunk, directly affects the direction and magnitude of the angular momentum of the lower limbs through its angle of motion.

During the highest speed phase, the flexion and extension angle of the hip joint is strictly controlled between 45 and 50 degrees.

When the body swings forward to its maximum angle, the angle between the thigh and the torso is 45 degrees.

When the swing reaches its maximum angle, the included angle is 50 degrees.

This is to prevent Su Shen from causing a sudden increase in the rotational inertia of his lower limbs due to excessive flexion and extension.

At the same time, the hip abduction and adduction angles are controlled within 5 degrees to reduce the generation of coronal angular momentum and concentrate the lower limb angular momentum mainly in the sagittal plane.

This allows the core muscle groups to counteract the force through a torque in a single direction.

92 m.

The pelvis functions as a "dynamic balance platform".

To mobilize.

The so-called "dynamic balance platform" function of the pelvis refers to—

The core muscles perform periodic isotonic contractions, causing the pelvis to tilt slightly during each step of support and takeoff.

During the support phase, the gluteus medius on the supporting leg side contracts, causing the pelvis to tilt slightly towards the supporting side, reducing the rotation radius of the swinging leg and decreasing the angular momentum of the swinging leg.

During the airborne phase, the external oblique muscles on both sides contract alternately, restoring the pelvis to a neutral position and preventing inertial rotation.

This dynamic adjustment reduces the fluctuation range of lower limb angular momentum by 15%-20%, significantly alleviating the compensatory pressure on the core muscle groups of the Su Shen.

At last.

The body is already very fatigued, and this has been alleviated.

It means a significant enhancement.

Su Shen was perfectly aware of this.

95 m.

This coupling manifests as the synchronicity between lower limb swing and pelvic movement.

When the swinging leg swings forward.

The opposite pelvis is slightly raised, and when the leg swings back, the same-side pelvis is slightly lowered. The overall range of motion is very small, but the rhythm is precise.

It forms a coordinated "wave-like" movement with the lower limbs pushing and swinging.

This ensures both propulsion output and...

Furthermore, it achieved source control of angular momentum.

Five meters left.

There's no suspense about who will win, or rather, the competition was already decided from the very beginning. The real suspense lies only in what Yuan Guoqiang, Yu Weili, and the others know...

Suarez is truly preparing for this match.

Will it set a new world record?
Upon arriving here, they were somewhat nervous and their breathing became rapid.

Suddenly I feel like this is a bit too difficult?

Even so, after seeing Su Shen's significant lead...

I couldn't help but raise my spirits a bit.

After all, that's just how humans are.

Always thinking, "What if?"
As for Su Shen, who is in the final stage on the track.

The proprioceptors begin to activate.

Real-time perception of proprioception.

strengthen.

Muscle spindles in muscles are responsible for sensing changes in the angular velocity of the limbs, tendon spindles sense changes in the tension of the core muscle groups, and the vestibular organs in the inner ear sense changes in the spatial posture of the trunk.

These receptors transmit signals to the spinal cord and motor cortex of the brain at a rate of 0.01-0.02 seconds, forming a real-time mapping of the body's angular momentum state.

For example, when Suarez's right lower limb swing speed increased during the 95-meter race.

Muscle spindles immediately transmit signals to the central nervous system.

Triggers adjustment of the contraction intensity of the core muscle groups.

The next step is to establish a tension balance between the antagonistic muscle groups.

During fatigue, the antagonistic muscles in the core muscle group maintain the torque balance of the trunk through mutual inhibition and synergy.

Like now.

When Su Shen's left erector spinae muscle contracts to generate a counterclockwise torque, his right erector spinae muscle relaxes simultaneously to avoid generating a counteracting torque.

At the same time, the rectus abdominis muscle adjusts the rotational inertia of the trunk through moderate contraction.

It forms a dual regulation of "torque-inertia" with the erector spinae muscles.

The last five meters.

Su Shen also felt that he had reached the peak of fatigue.

That's right, though; his shot was aimed at pushing the limits.

Since it's about pushing your limits, how could you not feel fatigued?

Su Shen decided to go all the way.

Science harnesses the wind.

Mountain driving.

Open them all.

Dynamic optimization of the forward tilt angle!
A tailwind generates a thrust in the direction of movement, causing the body's center of gravity to tend to shift forward. At this time, Su Shen needs to slightly adjust the angle of his torso forward from 5-8 degrees in calm winds to 4-6 degrees, and achieve posture control by slightly extending his hip joint.

This adjustment avoids "uncontrolled forward lurch" caused by excessive forward shift of the center of gravity, while allowing the tailwind thrust to be efficiently transmitted along the spinal axis, converting it into forward linear momentum rather than rotational torque.

Stiffness matching for core muscles!

深层核心肌群收缩强度需降低5%-8%，从静风时的60-70%最大收缩力调整至55-62%，使躯干保持“适度刚性”。

It avoids energy waste caused by excessive tension and can buffer the instantaneous fluctuations of downwind thrust through slight deformation.

The superficial core muscle groups remain in a "low-threshold activation state," ready to respond to angular momentum deviations caused by changes in thrust.

Adaptive adjustments to swing arm technology.

The arm swing amplitude needs to be reduced by 8%-10%, the forward swing height should be lowered from the tip of the nose to the level of the chin, and the backward swing should be lowered to the side of the hip joint.

This is because air resistance is reduced when the wind is downwind, so there is no need to maintain balance by swinging the arms a lot, and reducing the amplitude can reduce the coronal angular momentum generated by the upper limbs.

The range of elbow joint swing angle is narrowed to 80-140 degrees, reducing inertial fluctuations during arm swing and keeping the cancellation efficiency of upper limb angular momentum and lower limb angular momentum above 85%.

Optimize the rhythm of lower limb push-off and swing!
The extra propulsion provided by the tailwind will shorten the support time. At this time, the swing leg needs to fold more quickly, and the knee flexion angle increases from 40-50 degrees to 35-45 degrees. By reducing the moment of inertia, the swing speed is accelerated.

This adjustment allows the generation of angular momentum in the lower limbs to be synchronized with the tailwind thrust.

Avoid rotational interference caused by the "disconnect between the pedaling rhythm and external force".

96 m.

Landing position and angle correction.

支撑腿着地位置需从静风时的重心前方30-40cm后移至25-35cm，着地瞬间膝关节微屈角度增大至20-25度，形成“更柔和的缓冲支撑”。

This adjustment can offset the increased landing impact force caused by the tailwind and prevent the support reaction force from generating additional vertical axis angular momentum.

The increased impact of the inner side of the foot striking the ground further stabilizes the coronal plane balance through the dynamic deformation of the arch.

97 m.

Precise control of the direction of the push-off.

During the push-off, the force exerted by the hip, knee, and ankle joints is more horizontal, and the angle with the ground increases from 55-60 degrees to 58-63 degrees.

By reducing the proportion of vertical force, the ground reaction force and the downwind thrust can form a "resultant force in the same direction".

This adjustment not only improves propulsion efficiency but also avoids fluctuations in the center of gravity caused by excessive vertical force, thereby reducing the fluctuations in sagittal angular momentum.

This is one of the specific scientific details of wind control.

98 m.

Mountain biking is also an option.

Adjust the rhythm and power distribution of the push-off and swing!
Enhanced cushioning for a smooth landing!
At sea level, the torso leans forward at an angle of 5-8 degrees, and the center of gravity is projected 30-40cm in front of the inner side of the forefoot of the supporting foot.

In high-altitude environments, the forward tilt angle increases to 6-9 degrees, and the center of gravity projection point shifts forward by 5-8cm, approaching the front of the forefoot of the supporting foot.

The principle behind this change is that lower air density reduces air resistance by 18%, thus reducing the wind resistance burden caused by excessive forward tilting.

At the same time, a steeper forward lean can shorten stride length, and combined with increased stride frequency, reduce energy consumption per push-off, alleviating rapid muscle fatigue caused by hypoxia.

Viewed from the side.

Su Shen's upper body has a smaller angle with the ground, and the line connecting his head, spine, and hip joints is closer to the ground, but he always keeps a straight line without bending over or hunching.

To avoid angular momentum fluctuations caused by a decrease in core rigidity.

99 m.

Pelvic position: from "absolutely neutral" to "dynamic slight tilt".

At sea level, the pelvis should be kept strictly neutral, with the anterior superior iliac spine and pubic symphysis at the same level. In high-altitude environments, the pelvis should tilt slightly towards the supporting leg by 1-2 degrees during the support phase and quickly return to neutral during the take-off phase.

The principle behind doing this is...

Slight pelvic tilt during the support phase can increase the leverage of the gluteus medius and enhance lateral stability.

To compensate for the "lack of lateral support" caused by reduced air resistance.

Returning to center position during the airborne phase prevents the pelvis from generating additional angular momentum due to rotation.

Side view of the electric rabbit.

Su Shen's pelvis swayed very slightly from side to side, with an amplitude of no more than 3cm, but the overall position remained horizontal, without obvious forward or backward tilt, and the relative position with the torso was stable.

This time.

It is one of the advanced technologies for resetting the front swing, zero-slip control technology, scientific wind control, and mountain driving.

Give it your all.

It was all for this one shot.

Break the limits.

Break the record.

Break through all doubts.

Yussane.

This is a shot that combines two eras.

It surpasses the skill level of the past few decades.

you.

Can it be stopped?