The Su God of the Reopening of the Sports Arena

Chapter 2454 940! Another 940!

Chapter 2454 9.40...! Another 9.40!

From the audience's perspective.

It became.

After crossing the 50-meter mark, what first and foremost struck the audience about Bolt's running posture was his hip extension, which far exceeded that of ordinary people.

The slow-motion replay on television clearly showed that with each push-off, the angle of his hip extension reached an astonishing range.

The supporting leg's thigh is almost parallel to the ground, and the arc of the hips pushing backward is still clearly visible even at high speed, as if each step is actively "lengthening" the body's propulsion distance.

This iconic move is not simply a display of talent, but a precise application of the bent-arm start principle in the core power output stage, and the result of the combined effect of "space reservation" and "power focus".

You should know that in sprinting, the extension range of the hip joint directly determines the upper limit of stride length and propulsion, while the stability of the core muscle group is the key to supporting the hip extension movement.

At the start, Bolt's compact, bent-arm swing pattern effectively "unleashes" his core muscles:
With arms bent at your sides, keep your shoulder and neck muscles relaxed to avoid the strain on your shoulders and neck caused by the weight of your upper limbs when swinging your arms straight.

This design allows the core muscles to focus their energy on maintaining upper body balance and stability, thus saving more power for the subsequent explosive phase.

Compared with other athletes, especially those without bent arms, improper arm swing at the start of the race leads to tension in the shoulder and neck muscles, which in turn causes stiffness in the torso and forces the core muscles to divert energy to correct the upper body posture.

At this point, when entering the high-speed phase, the core strength has already been somewhat depleted, and naturally it cannot support a large hip thrust.

Especially tall people.

Look at Zhao Haohuan back then.

There was no bent-arm start.

That's a typical example.

Bolt, who mastered the bent-arm start, leveraged the "core energy-saving advantage" established by the bent-arm start, allowing his core muscle groups, such as the transverse abdominis and erector spinae, to fully contract after 50 meters, providing a solid support foundation for hip extension.

This causes the range of motion of the thigh to exceed conventional limits.

It unleashed astonishing energy.

Precise control of the forward lean angle of the torso during the bent-arm start phase also lays the groundwork for the high-speed hip extension.

At the start, Bolt's torso leans forward at an angle of 30-40 degrees. This angle is not set arbitrarily, but is the "optimal value" after repeated testing.

This approach ensures forward momentum at the start while avoiding stiffness in the torso caused by excessive forward leaning. This moderate forward lean allows the muscles around the hip joint, such as the gluteus maximus and iliopsoas, to be in a "pre-activated" state at the start, while also providing ample space for the hip joint to swing backward.

and so.

When Bolt enters the 50-80 meter high speed phase.

Gradually adjust your torso to an upright position. At this point, the space reserved in the early stage is completely released, allowing the hip joint to achieve maximum extension without compression.

In contrast, his previous performance was hampered by excessive forward lean or poor control at the start, which compressed his hip joint range of motion. Therefore, even when he consciously pushed his hips forward at high speeds, the lack of space resulted in distorted movements, failing to increase stride length and instead increasing energy consumption.

It used to be a source of deep concern for me.

It was perfectly resolved.

Mills felt the same way.

Extremely excited.

Although it wasn't done entirely by myself, I at least provided the research methods and determined the direction of the research.

And the final facts proved that the problem was not with his research direction.

The problem wasn't with the strategy I determined myself.

Jamaica's outdated sports technology has held it back.

This, on the contrary, proved that he had a keen eye for talent.

This made Mills appear much more confident.

In a good mood.

Bang bang bang bang bang.

The "force focusing" effect of torsional stability.

Extremely fast explosion.

Excessive hip extension opens the hip.

An explosion occurred.

It was as if the ground itself was about to be swallowed by him.

I stepped out of the pit.

While extending his hips to the maximum range of motion, Bolt's torso remained upright and stable without any lateral swaying, a detail that is a continuation of the results of "torsion training".

At the start, the American coaching team will specifically train his external oblique and erector spinae muscles, using "micro-tension control" during arm swing to help these muscles form fixed memory.

In this way, when the hip thrust at high speed generates lateral torsional force, the core muscle group can contract synchronously and instantly, fixing Bolt's torso into a "rigid pillar" and effectively counteracting the interference of the torsional force.

The direct advantage of this stability is that it allows all the force of hip thrust to be concentrated in the forward and backward direction, avoiding lateral energy loss.

In slow motion, it can be seen that every time Bolt thrusts his hips, it's like a "spring that is compressed and then fully released," with power transmission efficiency reaching almost 100%.

Previously, the lack of torsional stability often resulted in torso swaying during hip extension, with some of the force being dispersed to the left and right, significantly reducing the propulsive effect. This is one of the key reasons why Bolt has been able to consistently widen the gap at high speeds this season.

60 m.

At extreme speeds, Bolt's arm swing is no longer the "compact start" at the beginning of the race, but has been upgraded to a "close-fitting resistance + coordinated hip delivery" mode.

The camera captured from the side that his elbows were bent at a slightly smaller angle than at the start, with his upper arms close to his sides, and his arm swing trajectory resembling an arc drawn close to his body, without any unnecessary outward expansion.

This is an extension of the "low-consumption swing arm" principle of the curved arm start, which reduces air resistance by reducing the swing amplitude.

"Drag reduction logic" in wind tunnel testing.

This has now become a vivid image of "arms not blocking the way" on the field.

More importantly, the synchronization of arm swing and hip extension is crucial: when his hip joint extends backward, the arm on the same side also swings backward to its limit, with the elbow almost touching the waist.

As the hip joint returns to its forward position, the arm also swings forward simultaneously.

This is the landing of the "inertia of upper and lower limb linkage" at the start.

The neural connection between "bent arms and swinging legs" established at the start of the race has now become a conditioned reflex. Without deliberate control, the coordination of "arm swing leading to hip delivery and hip delivery promoting arm swing" can be achieved. There is no disconnect in the movement in the picture, as if the whole body is "exerting force in one direction".

65 m.

The image captured from the side of the lens is shown.

As his hip joint extends backward to its limit, the arm on the same side also swings back to the waist position, with the elbow almost touching the torso.

As the hip joint returns to its forward position, preparing for the next push-off, the arms also swing forward to the chest simultaneously.

The synergistic effect, with "hip and arm swing in sync and force direction consistent", further concentrates the force.

The power gain resulting from this synergistic effect is significant. Biomechanical studies have shown that synchronized movement of the upper and lower limbs can increase overall power output efficiency by 10%-15%.

Bolt achieves a "1+1>2" effect with every step he takes between 50 and 80 meters thanks to this coordinated movement. His movements are fluid and seamless, as if all the muscles in his body are working in the same direction. This is also an important guarantee for him to maintain his high-speed cruising.

70 m.

Under the lens of the track vehicle, Bolt's push-off motion appears to be "seamless".

As soon as the sole of the foot touches the ground, the calf muscles quickly tense up, the ankle instantly pushes out, and then the quadriceps muscles on the front of the thigh contract, propelling the body forward.

The whole process was as swift and decisive as "bounce on the ground with your feet," without the slightest delay.

This explosive, full-chain push-off relies on ample energy reserves in the lower limbs, which is precisely what was previously...

The curved arm start is a direct manifestation of the "energy-saving advantage".

The bent-arm swing pattern at the start minimizes energy consumption in the upper limbs. Data shows that compared to the previous straight-arm swing, the bent-arm swing reduces upper limb energy consumption by about 25%. This saved energy is not wasted; it is directly converted into "reserve power" for Bolt's lower limb muscles.

Therefore, when entering the 50-80 meter speed stage, other athletes have already experienced some fatigue in their core muscle groups such as the gluteus maximus and quadriceps due to excessive energy consumption in the upper limbs in the early stage, resulting in reduced force and slower speed when pushing off the ground.

Bolt's lower limb muscles still have plenty of strength, enabling him to complete the full chain of explosive movements of "hip thrust-knee push-ankle extension," generating maximum propulsion with each push-off.

In addition, there is the advantage of "postural inertia" from landing on the forefoot.

Once the high-speed phase begins, the advantages of this implementation model are further amplified.

The forefoot touches the ground first, then the foot quickly rolls to the full sole, and then pushes off the ground instantly. The whole process avoids energy loss and movement delay caused by landing on the heel.

Biomechanical tests show that landing on the forefoot can increase push-off efficiency by more than 20% while reducing impact on the knee joint.

The "forefoot strike" pattern established at the start has now become a habit, avoiding energy loss from heel strikes and allowing each push-off to "precisely transfer power." Combined with the hip extension, each step propels the opponent a few centimeters further, resulting in the visual effect of "running faster and faster."

Unleash the ultimate speed.

That's it.

It's a matter of course.

75 m.

After 70 meters, most sprinters begin to experience their "fatigue threshold."

Only a few can maintain this speed without declining too much.

At this point, lactic acid begins to accumulate in the muscles, nerve reaction speed decreases, and movement stability decreases, so speed is very likely to decline.

But Bolt in the footage still maintained a steady pace, with no ferocious expressions on his face, and his breathing was steady. He could even make slight adjustments to his head posture when crossing the 80-meter mark. This "fatigue-free" high-speed cruising is a result of the deep empowerment of the bent-arm start principle at the level of neural control and metabolic regulation.

Extend your stride by pushing your hips forward.

Body-fitting swing arm reduces drag and increases efficiency.

Lower limb explosiveness increases stride frequency.

A series of combined punches.

Bolt doesn't explode.

Who will erupt?
The power of technology.

This is something Bolt deeply felt after his trip to the United States.

Although he used to scoff at this, believing he could become number one in the world without needing to engage with it.

But I only found out after I got there.

Even without Su Shen becoming the world's number one, one still wants to become a better version of oneself and constantly surpass oneself.

Continuously pushing the limits of the world.

It still applies to the modern technology system.

Indispensable.

Because this allows him to face bottlenecks.

To better address bottlenecks.

There are more ways to overcome bottlenecks.

Finally, the bottleneck was broken.

This was when I was in Jamaica.

Something that is very difficult to do.

Although I don't want to say anything bad about Jamaica, I have to say this.

The United States is indeed much better than Jamaica.

For example, excessive hip extension.

For example, the body-hugging swing arm reduces drag and increases efficiency.

These were all new tactics that were developed for him after he went to the American team.

A new, tailor-made strategy.

There is no such advanced level of sports technology, sports technology concepts, or even sports technology equipment.

It's impossible for Bolt to do that.

Especially now, we are seeing the drag reduction and efficiency enhancement achieved by the body-hugging swing arm.

This is a typical example of how Bolt's motion model was precisely repaired through science and technology, research systems, and technological equipment.

The technology has changed.

"Compact" adjustment of arm swing posture.

At this time, Bolt kept his elbows bent at 90-100 degrees, and his upper arms remained close to his sides without any outward expansion.

This posture allows the upper limbs to form a "streamlined shape close to the body," minimizing the frontal area and avoiding additional air resistance when the arms swing. Compared to the "outward swing of the arms" commonly seen in ordinary athletes at high speeds, his arm swing trajectory is like "drawing an arc close to the torso," which can reduce wind resistance by 15%-20%, directly translating into speed gain at extreme speeds.

"Precise" control of the range of motion.

When swinging your arms, keep your wrists and forearms relaxed but not sluggish. The forward and backward swing should not exceed the vertical range of the shoulder line. Avoid unnecessary up-and-down or left-and-right swaying.

This precise control further reduces the impact of air on the limbs, making Bolt's body "smoother" during high-speed movement and reducing speed loss caused by wind resistance.

Especially in the last 80 meters.

Bolt is still holding on.

It is developing at an astonishing speed.

This is because the close-fitting arm swing is not simply a "passive drag reduction," but also an "active enhancement" through coordination with lower limb movements, amplifying the efficiency of power transmission.

In Dallas, they instructed him to leverage efficiency improvements by using a coordinated hip-thrust technique to create synergy and ultimately enhance power output.

The first is the "synchronous linkage" with the hip thrust movement.

During the high-speed phase, Bolt's arm swing rhythm is perfectly synchronized with the hip extension range—when the hip joint extends backward to its limit and the thigh is close to the ground, the arm on the same side swings back to the waist position, with the elbow almost touching the torso.

As the hip joint straightens forward in preparation for pushing off the ground, the arms swing forward simultaneously to the chest. This linkage originates from the neural memory established at the start of the run, making the arm swing a "hip-driving booster." The inertia of the upper limb swing pulls the hip joint backward, further amplifying the stride length advantage.

The focus is on "efficiency" in the second energy distribution.

The body-hugging arm swing does not require additional energy to control arm expansion or stabilize posture, and the saved energy can be concentrated on supplying the core and lower limbs.

At the same time, when Bolt swings his arms, keeping his upper arms close to his torso enhances torso stability and prevents the core power from being dispersed due to upper limb swaying. This allows the power of hip thrust and ground push to be more concentrated in the forward and backward direction, so that "every bit of force is used to propel forward".

Ultimately, it supported a speed exceeding... the limit of 46 km/h.

Bang bang bang bang bang.

At this speed, there's really nothing to say.

This speed.

If it weren't for the speed wall blocking the way...

It's estimated that it will become invincible.

Even as he entered the final 20-meter sprint, Su maintained his signature tight stride frequency, with each push-off being powerful, his arm swing rhythm steady, and his eyes fixed on the track ahead, trying to maintain his advantage until the finish line.

But on this ultimate stage of human speed competition, Bolt's "close-fitting arm swing to reduce drag and increase efficiency" advantage was once again demonstrated. His upper arm was even closer to his torso, the 90-degree bend of his elbow joint remained precisely unchanged, and the arm swing trajectory was as smooth as a pre-set arc without any extra swaying, reducing wind resistance to the minimum.

Not to mention that others have also started utilizing wind resistance.

It has a hint of involving scientific wind control.

At least we have this concept now.

At the same time, the energy and synergistic advantages accumulated in the early stages of the technology loop have been fully released.

Bolt's hip extension was not reduced at all, and he maintained a near-parallel posture when his thighs extended backward. Combined with the efficient push-off from the forefoot landing, his stride length was stable.

More importantly, his arm swing, hip extension, and ground push-off resonate perfectly, with each arm swing precisely pulling the hip joint to generate force, maximizing the efficiency of power transmission.

With ten meters to go, Bolt had already taken a half-body length ahead thanks to this burst of extreme acceleration.

Despite Suarez's best efforts, he couldn't match the sustained explosive power of Bolt's closed-loop technique.

In the final five meters, Bolt pressed the finish line with all his might.

Kill Su Shen.

9.40...

Another 9.40.

and.

Although Lausanne is a small plateau.

The wind speed was also close to 1.5 meters per second.

but.

The A is not added here.

After Bolt finished running.