The Su God of the Reopening of the Sports Arena

Chapter 2501 Three-Joint Torque Technology Upgrade! Controllable Super Speed ​​Arrives

No one expected Su Shen to run like that.

This completely disrupted Bolt's team deployment and team plans in the acceleration zone.

This guy is really something when it comes to getting started.

No matter what, they have to be one step ahead of themselves.

Or several.

Every time I thought I could close the gap with him, he would pull ahead again.

What a damn guy.

He truly is my nemesis.

It is said that when God created man, He would leave you an opponent.

Bolt now believes this claim.

He considered Su Shen to be his nemesis.

In this case.

Sue.

Then you deserve all the hard work I've put in over the past two years.

I haven't been putting in the effort when it comes to girls for the past two years.

It absolutely has to be done to you!!!
After reaching 30 meters, gradually lift your head, ready to enter the middle running zone...

This is Bolt's area of ​​advantage.

After entering his area of ​​strength.

All of the above were just his attempts to make up for his weaknesses.

Let's start from this place.

That's his upgrade of his strengths.

Sue.

Take it!

Three-joint torque enhancement technology!
Let him have a taste!
……

When Bolt first arrived in the United States, everyone thought his skills were quite good. In a backward and wild place like Jamaica, having such skills was already impressive. But in the eyes of these American professionals…

Still not enough.

There is still a lot of room for improvement.

This isn't to deny Mills' professional abilities, but rather to say that without the necessary sports lab support, relying solely on individual skill in modern competitive sports, especially in track and field...

It's difficult to say that one person can fully develop an athlete's potential.

If you think this way, then you are underestimating and insulting modern sports science.

“Eussen, here is the core definition of our newly developed three-joint torque technology and its fit to your body shape. You can take a look.”

Bolt opened it and took a look.

It contained many things I had never encountered before.

He certainly knew about the three-joint torque technology; Mills had taught him this, and it was through this that he was able to upgrade his strength once again.

But he didn't expect that the technology could be upgraded.

After all, Mills had run out of ideas in this regard.

Seeing Bolt's expression, these people were quite satisfied, because this was exactly what they wanted; otherwise, how could they show off their superiority?
If Bolt weren't a model of God, they really wouldn't look down on those Jamaicans.

They can all get used to the fact that Bolt is American.

Although there has never been a concept of a "true American" in history.

But that's okay, because of American history.

Neither is very good.

"The essence of lower limb push-off in sprinting is the coordinated torque output of the hip, knee, and ankle joints—the three joints generate rotational torque in sequence, forming a rigid transmission chain of 'hip extension torque → knee extension torque → ankle plantar flexion torque,' which converts muscle contraction force and ground reaction force into forward propulsion. I think you've already been told this over there, and you've done a good job on this. However, for someone as tall as 1.96 meters with a wingspan far exceeding their height, the three-joint torque technique is not a simple, standardized movement replication, but a customized, upgraded version based on their ultra-long upper limb leverage."

"This is the personalized version that suits you."

"What? You said that word is a bit long and complicated, and I don't quite understand it."

The Americans looked at each other in bewilderment.

But it doesn't matter. Whether Bolt understands it or not is irrelevant; most American athletes don't understand it anyway. As long as he does what he wants, that's fine.

In fact, these people would rather the athletes not understand, so that they can show off their superiority and knowledge. They even feel good when the athletes are subservient and obedient to them.

After all, in terms of physical condition, anyone would feel inferior to an athlete.

It's weaker.

"Come and take a look at this."

An elderly man with a white beard and glasses, who was leading the group, pointed to a section on the computer screen. Bolt glanced at it and saw it densely covered with writing—

Your previous three-joint torque output relied more on the isolated force exertion of the lower limb muscles, with the upper limbs only serving as a balance aid.

The core of your technology is actually to use the large leverage position advantage formed by the ultra-long arm span to build a linkage force system of "upper limb lever traction - lower limb three joint torque superposition".

Its extra-long arm span brings an advantage in upper limb mass distribution, which can generate an inertial traction force far exceeding that of ordinary athletes during the swing. This traction force is directly applied to the hip through the rigid transmission of the core trunk, becoming the "pre-power source" for the torque output of the three joints.

The essence of this upgrade to the three-joint torque technology is to completely synchronize the torque output timing of the hip, knee, and ankle with the traction timing of the upper limb lever, thereby achieving a two-way gain effect of "upper limb traction amplifying lower limb torque, and lower limb torque feeding back to the upper limb swing speed".

Ultimately, during the crucial first 20 meters of the race, explosive power is boosted exponentially.

It allows you to achieve a leap in speed.

"From a biomechanical perspective, your exceptionally long arm span directly extends the lever arm length L of your upper limb swing; at the same time, the high-frequency swing in the bent-arm posture increases the output efficiency of the force F—making the traction torque generated by your upper limb swing 1.8-2.2 times that of ordinary athletes. This additional traction torque will be directly superimposed on the torque output system of the three joints of the lower limbs, increasing the extension torque of the hip by more than 30% in the initiation phase, laying the foundation for the subsequent torque release of the knee and ankle joints."

"So what we need to do is..."

The white-bearded, bespectacled old man clicked the mouse.

New text and mind maps appeared on the screen.

The upgrade of the three-joint torque technology enhances the start-up phase (0-10 meters).

Utilizing torque timing optimization and ground reaction force amplification.

"The starting phase is the core technical challenge in sprinting, especially for a tall athlete like you. The key to breaking through the bottleneck of starting speed is to quickly establish effective output of torque in the three joints while leaning forward, and to avoid power delay caused by an excessively high center of gravity. Your previous technique in this area was not good enough. The upgrade of the three-joint torque technology we have equipped you with, combined with the large lever traction of your ultra-long wingspan, has solved this problem. Its core principle lies in the precise control of torque output timing and the maximization of ground reaction force."

At this point, the mind map reads:

The first step is the pre-triggering of hip torque: the timing synchronization of upper limb lever traction.

The hip is the starting point for torque output in the three joints and the core hub connecting the upper and lower limbs.

In traditional initiation techniques, the generation of hip torque relies on the active contraction of the iliopsoas and gluteus maximus muscles, which is a "passive triggering" mode, resulting in a relatively long delay in torque output.

Your upgraded three-joint torque technology, through the large lever traction of the ultra-long arm span, transforms the triggering mode of hip torque into "active pre-triggered".

Then a GIF popped up.

The description of this GIF is as follows:

When Bolt is in the starting block position, his extra-long forearm in the bent-arm position is almost parallel to the ground, and the lever arm of his upper limb is in the optimal position for exerting force.

As soon as the starting signal was given, his lower limbs pushed off the starting blocks, and his upper limbs began to swing forward at a high frequency—the large leverage arm brought by the extra-long arm span allowed the traction torque generated by the swing to act directly on his hips.

According to the principle of torque superposition, this traction torque will be superimposed with the endogenous torque generated by hip muscle contraction, forming a "superimposed torque".

At this point, the torque output of the hip is no longer a single muscle contraction force, but a combined force of "endogenous torque + upper limb traction torque".

Subsequently, through technological upgrades, the timing of upper limb swing and the timing of hip torque output were precisely synchronized within 0.02 seconds.

The timing difference between the upper limb swing and the hip torque output of an average athlete is usually 0.05-0.08 seconds, which makes it impossible for the traction force to be effectively superimposed.

Bolt's customized technology, through long-term neuromuscular training, allows the muscle spindle signals of upper limb swing to be completely synchronized with the contraction signals of hip muscles.

It achieves torque superposition without delay.

This superposition effect increases the torque output intensity of the hip during the start-up phase by 40%, directly propelling the hip forward quickly and avoiding the "hip lag" problem commonly seen in tall athletes.

The second step is the chain release of torque in the knee and ankle joints: optimization of torque transmission efficiency.

The pre-triggered hip torque provides a "power-fronted" basis for the release of torque in the knee and ankle joints.

The core upgrade of the three-joint torque technology lies in constructing a rigid transmission chain of "hip torque → knee joint torque → ankle joint torque," ensuring no energy loss during torque transmission. Bolt's extra-long arm span lever further enhances torque transmission efficiency by stabilizing the core posture.

During the initial push-off phase, the superimposed torque generated in the hip is directly transmitted to the knee joint through the rigid connection of the hamstring muscles. At this point, the extension torque of the knee joint is no longer an isolated quadriceps contraction force, but a "relay torque" that receives the torque from the hip.

Bolt's technological upgrade focuses on optimizing the torque-bearing angle of the knee joint—locking the knee joint's bending angle at around 135°, which is the optimal mechanical angle for torque transmission, increasing the torque transmission efficiency from the hip to over 95%.

Next, the torque from the knee joint is transmitted to the ankle joint, triggering the release of plantar flexion torque in the ankle. The ankle joint is the end of the torque output of the three joints and a key link in converting torque into ground reaction force.

Bolt's technological upgrades, by strengthening the elastic potential energy reserves of the calf muscles and Achilles tendon, allow the torque output of the ankle joint to exhibit an "explosive release" characteristic.

Its extra-long reach and large lever traction play a role in stabilizing posture during this process. The inertial force generated by the swing of the upper limbs can effectively prevent the body's center of gravity from shifting during torque release, keeping the ankle joint in the optimal force-generating posture and avoiding torque loss caused by center of gravity swaying.

From a scientific perspective, this process is entirely consistent with the core principles of the Hill muscle model.

In other words, the contractile force of a muscle is negatively correlated with its contraction speed, and through the chain release of torque, the muscle can output maximum force within the optimal contraction speed range.

Bolt's three-joint torque upgrade technology keeps the contraction speed of the hip, knee, and ankle muscles within the "optimal force range" of the Hill model. At the same time, the traction effect of the upper limb lever further enhances the initial contraction speed of the muscles, ultimately maximizing the torque output efficiency during the start-up phase.

The third step is the amplification of the ground reaction force: the bidirectional gain of the couple system.

Ground reaction force is the essential source of propulsion in sprinting, and the upgrade of the three-joint torque technology, combined with the large lever swing of the ultra-long arm span, can build a highly efficient force couple system.

This achieves an exponential amplification of the ground reaction force.

According to Newton's third law, the force exerted by the lower limbs pushing off the ground is equal in magnitude and opposite in direction to the ground's reaction force. During the initial acceleration phase, the force generated by the torque output of Bolt's three lower limb joints creates a downward and backward force. Meanwhile, the swinging motion of his exceptionally long arms generates a forward and upward pulling force. These two forces are equal in magnitude, opposite in direction, and not collinear, forming a typical couple system.

The core advantage of a couple system is that it enables objects to produce pure rotational effects without generating additional translational interference.

For Bolt, the unique advantage of this couple system is that the extra-long arm span extends the length of the couple arm.

According to the formula for moment of a couple, M is the moment of the couple, F is the force, and d is the length of the couple arm. The length of the couple arm d is positively correlated with the moment of the couple M. Bolt's advantage in arm span makes his couple arm 8-10 centimeters longer than that of the average Black athlete, which increases his moment of the couple by 25%-30%. The stronger moment of the couple directly amplifies the horizontal component of the ground reaction force—the vertical component originally used to maintain body balance—which is partially converted into a forward propulsive force.

This is only the initial stage.

Then came the acceleration phase.

Their proposed solution was—

The three-joint torque technology upgrade enhances the acceleration phase (10-30 meters): the torque superposition effect and the synergistic improvement of stride length and stride frequency.

The laboratory believes that:
The core technical goal of the acceleration phase is to achieve the synchronous growth of stride length and stride frequency, and the realization of this goal depends entirely on the continuous superposition of torque output of the three joints.

Bolt's upgraded three-joint torque technology, combined with the advantage of his ultra-long arm span and large lever position, creates a virtuous cycle of "torque superposition - stride extension - stride frequency maintenance", achieving a linear increase in speed within the 10-30 meter acceleration range.

It is divided into two steps.

The first step is...

The continuous superposition of torque at three joints: from "single torque output" to "cyclic torque gain".

During the acceleration phase, each push-off by the athlete is an independent torque output process.

The torque output of ordinary athletes exhibits a "decreasing trend"—as muscle fatigue intensifies, the torque output intensity of the hip, knee, and ankle gradually decreases. However, Bolt's upgraded three-joint torque technology, through the large lever traction of his ultra-long arm span, achieves "cyclical gain" of torque, ensuring that the torque output intensity not only does not decrease during acceleration but continues to increase.

Its core principle lies in the energy recovery effect of upper limb leverage. Bolt's extremely long arm span generates enormous inertial kinetic energy during the swing, which is converted into elastic potential energy of the hip muscles through the transmission of the core torso during the arm's backward swing phase.

When entering the next push-off phase, this elastic potential energy is superimposed on the contraction force of the hip muscles, further increasing the output intensity of hip torque. This energy cycle of "upper limb swing kinetic energy → core elastic potential energy → hip torque" creates a "gain closed loop" in the output of torque across the three joints.

From the perspective of energy conservation in biomechanics, the energy loss rate of this closed-loop system is only about 15%, which is far lower than the 35%-40% of ordinary athletes.

This means that with each push-off during the acceleration phase, Bolt converts 85% of his energy into torque output across his three joints, while ordinary athletes can only convert about 60%. This high energy conversion efficiency allows his hip torque to continuously increase during the 10-30 meter acceleration phase, rising from 120 N·m at the start to 150 N·m, with the knee and ankle joint torques also increasing accordingly.

Ultimately, it achieved a continuous increase in stride length—its stride length during the acceleration phase gradually increased from 2.2 meters to around 2.5 meters, which is much greater than the continuous stride length increase model of ordinary athletes in the acceleration zone.

The second step.

Stable maintenance of cadence: frequency anchoring effect of upper limb levers.

Step frequency is another key indicator during the acceleration phase. For tall athletes, maintaining step frequency is much more difficult than expanding stride length.

Bolt's upgraded three-joint torque technology, combined with the large lever swing of his ultra-long arm span, achieves stable maintenance of stride frequency through frequency anchoring effect, avoiding a decrease in stride frequency caused by stride extension.

The essence of cadence is the frequency of lower limb extension, and the lower limb extension frequency and the upper limb swing frequency have a 1:1 coupling relationship.

Bolt's exceptionally long arm span gives his upper limbs a "highly stable" swing frequency—due to the longer lever arm, the upper limbs have greater inertia and the frequency fluctuations are smaller.

This frequency range happens to be the optimal stride frequency range during the acceleration phase of a sprint.

More importantly, Bolt precisely coupled the upper limb swing frequency with the output frequency of the torque of the three joints of the lower limbs through neuromuscular training. When the upper limb swing frequency stabilizes at 4.0+ Hz, the lower limb extension frequency also stabilizes in the same range, forming a coupling mechanism of "upper limb frequency anchoring - lower limb frequency following". The advantage of this mechanism is that the stride frequency no longer depends on the fatigue endurance of the lower limb muscles, but is determined by the inertial swing frequency of the upper limbs, thus avoiding the "stride frequency decay" problem common in the acceleration phase.

From a scientific perspective, this coupling mechanism aligns with the "frequency dominance principle" in motion coordination theory—in coordinated upper and lower limb movements, the limb with greater mass and inertia dominates the overall movement frequency. Bolt's exceptionally long wingspan provides an advantage in upper limb mass, making the upper limb the dominant force in movement frequency, thus enabling the stable maintenance of his stride frequency.

Ultimately, if the training can be completed.

During the acceleration phase from 10 to 30 meters, he achieved a double breakthrough of "stride length increase of 0.3 meters + stride frequency stability of 4.0+ Hz", a technical level that is difficult for ordinary athletes to reach.

Next comes the intermediate run.

That is, Bolt's current stage.

We've reached this stage because the previous two stages laid the foundation.

Only by doing these two steps well can we have what we have today.

That's what Bolt is doing right now.

The upgraded three-joint torque technology enhances power generation in the first 20 meters (30-50 meters) of the race.

The peak torque output and the speed plateau are established in advance.

The first 20 meters (30-50 meters) of the race is a critical interval in sprinting, transitioning from the acceleration phase to the constant speed phase. Its core technical goal is to achieve peak torque output and build a speed plateau.

Bolt's upgraded three-joint torque technology, combined with the advantage of his extra-long wingspan and large lever position, allows him to reach peak torque output in this range, enter the speed plateau period earlier, and establish an irreversible leading advantage.

The steps that Amelika designed for him were as follows.

The first step is the peak output of the three-joint torque: the dual support of core rigidity and lever traction.

The core of power generation in the first 20 meters of the race is the synchronous peak output of torque from the hip, knee, and ankle joints.

Bolt's technological upgrades focused on strengthening the rigidity of the core torso, ensuring that the traction torque of the upper limb levers can be 100% transmitted to the three joints of the lower limbs, achieving a peak torque superposition.

Within the 30-50 meter range, Bolt's body center of gravity gradually transitions from a "forward-leaning acceleration" posture to an "upright and uniform speed" posture, at which point the rigidity of his core torso becomes crucial for torque transmission.

Through technological upgrades, he increased the contraction strength of the core muscle groups to over 90%, making the torso a "rigid transmission rod"—the traction torque generated by the swinging of the upper limbs with an ultra-long arm span is directly transmitted to the hip through this transmission rod, superimposed with the contraction torque of the hip muscles.

At the same time, the core rigid support prevents the lateral divergence of torque during transmission, allowing the torque output of the knee and ankle joints to reach its peak simultaneously.

Looking at the peak torque data, Bolt's peak hip torque in the 30-50 meter range reached 160 N·m, his peak knee torque reached 140 N·m, and his peak ankle torque reached 180 N·m. All three figures far exceed the peak levels of athletes in the same category.

This peak torque is directly converted into forward propulsion, allowing his speed to reach 12.5 meters per second at 50 meters, thus entering the speed plateau earlier than expected.

Ordinary athletes typically need to reach 60-70 meters to achieve the same speed level.

The second step.

The offsetting effect of air resistance.

Optimization of the streamlined posture of the upper limb lever. During the middle of the race, air resistance increases quadratically with speed. Bolt's upgraded three-joint torque technology, combined with his ultra-long arm span and flexed arm swing, optimizes the body's streamlined posture to…

It effectively offsets the negative impact of air resistance, ensuring that peak torque output can be fully converted into speed increase.

Its extra-long arm span and bent-arm swing allow the upper limbs to stay close to the sides of the torso, minimizing the frontal area A. At the same time, the upper limb swing in the bent-arm posture can guide the airflow around the body to form a "streamlined airflow field," reducing the drag coefficient C_d.

According to their laboratory calculations.

Bolt's drag coefficient in the 30-50 meter range is only 0.85, far lower than the 1.1-1.2 of ordinary athletes. The reduction in air resistance means that the propulsive force generated by the torque output of the three joints does not require additional energy to overcome drag, and is thus entirely converted into speed increase.

From a scientific perspective, this posture optimization aligns with the streamlined principle of aerodynamics—the smaller the windward area and the smoother the surface of an object, the lower the air resistance. Bolt's extra-long arm span and bent-arm swing not only reduce the windward area but also guide airflow through the swing of his upper limbs, making the airflow around his body smoother, further reducing air resistance, and ultimately achieving a highly efficient conversion of peak torque output into speed.

……

30 m.

The Bird's Nest stadium.

Bolt was seen running behind in the middle of the road.

He stood there, completely stunned.

At this moment, he had already bid farewell to the low center of gravity and forward leaning posture of the starting phase. His body center of gravity was slowly raised to a visible degree, but without any looseness.

That's the rigid beauty that comes from the extreme tension of the core muscles.

The transverse abdominis and erector spinae muscles were as if they were being tightened by invisible bands, making the torso as straight as a quenched arc, with the palms almost brushing past the area below the collarbone.

This is not an ordinary arm swing, but a lever traction brought about by an ultra-long arm span - the shoulder muscles suddenly contract, and the traction torque is transmitted along the taut torso to the hip, which is superimposed with the explosive contraction torque of the gluteus maximus.

The moment his foot pushed off the track.

The ground seemed to tremble slightly.

The degree of his body's flight was just right.

It will not waste vertical energy due to being too high, nor will it affect stride extension due to being too low.

The 160 N·m hip torque, 140 N·m knee torque, and 180 N·m ankle torque transform into an unstoppable forward thrust at this moment.

His body shot forward like a cannonball.

At the same time, his left arm swung back in a symmetrical bent-arm posture, with his extra-long arm close to the sides of his torso, completely lacking the outward swing amplitude of an ordinary athlete's arm swing.

This posture minimizes the area exposed to the wind, causing the airflow that would normally create resistance to slide smoothly along his taut back and tightly pressed arms, forming a fluid arc.

33 m.

The spectators in the stands could only see a black lightning bolt speeding across the track, and didn't even have time to see his facial expression.

In the footage captured by the high-speed camera, his facial muscles were tense, and his eyes were fixed on the finish line ahead.

The frequency of each arm swing and push-off is as precise as that of a precision instrument.

During this period, his maximum speed per second also continued to increase.

From a peak of 11 seconds per second, all the way up to breaking through 12 seconds per meter.

This number is still increasing.

After adjustments, each of his steps landed precisely on the center line of the track, and the rigidity of his torso further reduced the deviation of his swaying from side to side.

This means that the loss in torque transmission has been reduced to less than 5%.

Then compare it to the running style originally used in Jamaica.

It was almost like upgrading from a slingshot to a cannon.

35 m.

Precise control of torque vector direction and minimization of propulsion loss!

In the first 20 meters of the 30-50 meter run, the athlete's power generation is not only about the peak torque output, but also about the precise control of the torque vector direction.

This means ensuring that the propulsive force generated by the torque of the three joints is directed entirely in the direction of the body's forward movement, thus avoiding energy loss due to deviation in the direction of force application.

Bolt's upgraded three-joint torque technology, combined with the large lever traction advantage of the ultra-long arm span, achieves "zero deviation" control of the torque vector direction, further amplifying the efficiency of speed improvement.

This is them, enabling Bolt to perfectly showcase the third step of his super-fast mid-race preparation.

From a biomechanical perspective, the vector direction of torque in the three joints of the lower limbs is determined by the forward thrust angle of the hip, the extension angle of the knee, and the plantar flexion angle of the ankle. During the transition from acceleration to the middle of the race, ordinary athletes tend to experience hip slump and an upward-biased knee extension due to the increased center of gravity. This results in a vertical component of the torque vector, leading to ineffective loss of propulsive force.

Bolt's technological upgrade, through the large lever traction of his ultra-long arm span, has constructed a linkage mechanism of "upper limb traction - trunk anchoring - lower limb directional force exertion," which fundamentally solves the problem of torque vector direction deviation.

Specifically, Bolt's exceptionally long arm span generates a forward horizontal traction force when he swings his arms. This traction force is transmitted rigidly through the core torso, directly anchoring the forward angle of the hips—keeping them in an optimal forward posture of about 15° with the ground, thus preventing the hips from sitting back.

Simultaneously, the frequency and amplitude of upper limb swing, through neuromuscular coordinated control, synchronously regulate the knee joint's extension angle, locking it within the golden range of 140°-150° for power generation, and maintains the ankle joint's plantar flexion angle at the optimal 45° for power generation. This coordinated angle of the three joints ensures that, once Bolt enters the middle of the race, the propulsive force vector generated by the torque of these three joints is entirely directed in the direction of his forward movement.

The vertical force component is reduced to less than 5%.

It is far lower than the 15%-20% that I had not improved before.

This precise control of the torque vector direction is based on solid scientific evidence—the principle of force composition and decomposition.

When the propulsive force vector generated by torque is completely horizontal and forward, all the force can be converted into kinetic energy for the body to move forward.

However, once a vertical component of force appears, this force will be used to counteract gravity or generate upward displacement, resulting in ineffective energy consumption.

Through technological upgrades, Bolt has increased the effective conversion rate of propulsion to over 95%, meaning that at the same peak torque, he can achieve…

We need to move forward with even greater force.

Precise control of torque vector direction and minimization of propulsion loss, this specific technology, during operation, becomes—

Bolt's hips thrust forward with an overwhelming force.

It felt like an invisible giant hand was pushing us forward violently from behind.

This force did not come out of thin air, but was a perfect superposition of the leverage force of the upper limbs and the contraction force of the hip muscles.

What's even more impressive is his lower body posture: his knee joint is precisely positioned within the 145° range of force exertion at the moment of push-off, without either causing stagnation due to an excessively small angle or wasting vertical kinetic energy due to an excessively large angle.

The ankle joint then pushes off the ground hard at a 45° plantar flexion angle, and the calf muscles and Achilles tendon suddenly snap open like a taut steel string.

The force is transmitted straight upwards along the shinbone.

In slow motion, the technical details of this scene are magnified infinitely:

The moment Bolt's foot pushed off the track, the point of contact between the sole of his shoe and the track landed precisely below his center of gravity, a difference from the previous section... the offset was reduced.

He used to run rather casually.

Of course, this is also due to the limitations of Jamaica's sports science, which makes it impossible for Mills to optimize the system even if he wanted to.

Bang bang bang bang bang.

The force-generating angles of the hip, knee, and ankle joints are perfectly aligned.

The resulting propulsive force vector is as if it has been calibrated by a laser, moving straight forward along the direction of the body's movement, without any superfluous vertical component.

Compared to his opponents behind him, some of them extended their knees at an excessive angle, resulting in a significantly greater height in the air than Bolt, but they landed with a slight stagger.

Some people sit back slightly with their hips, and the propulsion force is obviously biased diagonally upward, making each step seem like they are "bouncing" as they run.

These are all direct manifestations of torque vector direction deviation.

Of course, the old Bolt was the same, there wasn't much difference.

And now every step Bolt takes...

They all resemble straight lines cut by a precise carving knife on the track.

He kept his body height in the air to a minimum, and his feet lightly touched the track when he landed.

There is almost no extra buffering action.

The next push-off was so fast it was dazzling.

This is the optimized effect of zero-deviation torque vector control.

The vertical component of the propulsion force is reduced to less than 5%.

More than 95% of the force was converted into forward kinetic energy.

This……

How could it not be fast?

You can look down on the various systems, ideas, and tax categories in America.

But you can't ignore his leading position in these areas.

underestimate.

Absolutely not.

At least at the strategic level, we must pay attention to this.

35 meters, 40 meters, 45 meters...

The red marker line of the Bird's Nest stadium flashed past Bolt's feet.

The gap between him and his rivals is widening at a visible rate.

At 40 meters, even Gatling, who was in third place, was already far ahead.

In comparison, you can see that Gatling's arm swing is much larger at this moment.

The angle of his upper limbs abduction significantly increased his windward surface area.

More importantly, Gatlin's hip thrust angle is significantly smaller than Bolt's.

The vector direction of the propulsion force has a slight upward arc, and every step requires a little effort to fight against gravity.

There's no way around it; it's not that Gatlin doesn't know this, it's just that he doesn't perform as well as Bolt in this area. Once you know something, and after training and practicing, with the same training volume, you just can't do as well as him…

That means it's either a problem with comprehension ability.

Or it's a matter of your talent.

Choose one yourself.

Bolt's face showed no sign of strain. His eyes were fixed on the finish line ahead, his chin slightly tucked in, and his breathing rhythm perfectly synchronized with the frequency of his arm swing and push-off.

The extra-long arm span and bent-arm swing not only anchor the hip angle, but also, through the coordinated control of neuromuscular mechanisms, allow the force-generating angles of the knee and ankle joints to form a perfect linkage with the hip.

Every change in the frequency of the upper limb's swing can be precisely transmitted to the lower limb.

Adjusting the torque vector direction of the three joints.

Make sure it always points in the direction of victory.

The speed per second is also constantly increasing.

After passing through at 12 meters per second, it increased to 12.1 meters per second.

Then it reaches 12 seconds and 2 meters per second.

It reaches 12 seconds and 3 meters per second.

This shows that his top speed is constantly increasing.

More and more terrifying.

He wanted to achieve the super speed he accidentally set in Moscow.

Make it controllable.

This is what he helped him achieve at the US lab over the past two years.

We must also help him achieve these points.

Improvements to the curved arm start.

This one.

Equally crucial.

If the bent-arm start significantly improved his original natural disadvantage.

So that's the point.

That is, to the extent that he already had an advantage.

Stronger and stronger.

They attacked even more fiercely.

pity……

all of these.

All of this was within Su Shen's expectations.

The incredible speed that erupted in Moscow was truly astonishing.

But if Bolt could do it.

Then Su Shen believed that if he went to the United States and contacted advanced technology teams, he would be able to achieve his goals.

There is a high probability that it will become a state that can be controlled.

If you harbor illusions.

So this time, the battle at the Bird's Nest will definitely be very difficult.

really.

That's exactly what Bolt did.

That's terrifying speed.

It's frightening.

Indeed, even Su Shen would find it difficult to stop him.

but.

Who says it has to be completely blocked?

The advantages accumulated previously.

All you need to do is maintain it gradually.

at this point.

Su Shen knew better than anyone else.

He was the head of the sports laboratory in both his lifetimes.

I will not harbor any illusions.

Everything is based on scientific principles.

Bolt's incredible speed.

The fears facing Moscow.

at last.

It's coming again.