The Su God of the Reopening of the Sports Arena

Chapter 2453 The Godhood Realm! The Fourth Stage That Can Be Freely Controlled.

Lausanne Stadium.

Bang bang bang bang bang.

After Bolt crossed the 30-meter mark, his body officially entered the first half of the race – this section is not simply a "speed continuation", but a "critical power-building period" that transitions from "accelerated breakthrough" to "extreme cruising".

At this point, his speed had reached 11.5-12.0 m/s, just a step away from the peak speed of 12.5-13.0 m/s. The muscle operation mode shifted from "explosive power-dominated" to "explosive power and endurance synergy," while the bent-arm technique, through "posture fixation" and "energy throttling," laid a solid foundation for the final speed breakthrough. The core logic of this stage is "to minimize energy consumption and maximize kinetic energy reserves while maintaining high speed," with every detail of the movement revolving around "how to approach the maximum speed in the most energy-efficient way."

Enter the 30-50 meter range.

Bolt's torso has completely abandoned the forward-leaning posture.

The angle between the aircraft and the ground remains stable at around 90°, forming a standard "upright cruising" running posture.

However, this "uprightness" is not a completely rigid verticality, but rather a slight dynamic balance of the trunk in the sagittal plane maintained through "micro-tension control" of the core muscle groups.

The activation level of the erector spinae muscles further decreases to 25%-30%, and the contraction pattern completely changes to "isometric contraction," maintaining only the physiological curvature of the lumbar spine and avoiding lumbar compensation caused by the vibration generated by high-speed running.

The activation levels of the rectus abdominis and external oblique muscles are stable at 25%. The former prevents the trunk from leaning forward due to abdominal relaxation through continuous mild contraction, while the latter counteracts the "lateral torsional force" generated when the lower limbs push off the ground through bilateral symmetrical tension control.

This allows the body's sway in the coronal plane to be controlled within 2-3cm, far lower than the 5-6cm sway of ordinary athletes.

More importantly, Bolt's "torso-head-neck" forms a perfect "linear rigid structure"—

The chin remains slightly tucked in, and the gaze is level with the front. The activation level of the neck muscles is only 15%, almost in a "low-load stable" state. The core value of this structural design lies in "reducing energy loss caused by ineffective movements".

The stability of the head prevents fluctuations in the force on the cervical spine caused by shaking, while the rigidity of the torso ensures that the forward force generated by the lower limbs pushing off the ground can be transmitted "straight" along the spine without the need for unnecessary posture adjustments to consume energy.

Biomechanical monitoring data from US laboratories show that this "stereotyped torso posture" can further reduce the overall energy transfer loss rate to 3%-4%!

This is equivalent to saving 5%-8% of muscle energy for every 10 meters run, thus reserving crucial kinetic energy for subsequent high-speed breakthroughs.

This is called balancing control from "dynamic adjustment" to "stable cruise".

Moreover, in the 30-50 meter range, Boya no longer pursues "maximum frequency" when pushing off the ground with her lower limbs.

Instead, it shifts to "precise matching of frequency and intensity".

Although the step frequency is slightly lower than the 4.5-4.6 steps/second before 30 meters, the "force efficiency density" of each step and the propulsive force output per unit time are significantly improved, forming a "force-compensating frequency" power generation strategy.

This shift is not a decline in muscle strength, but rather a way to avoid "rapid fatigue caused by high-frequency push-offs" by "extending the duration of the force effect of a single push-off" and achieving a "balance between high speed and low energy consumption".

35 m.

Bolt's hip joint.

The functional transformation from "powerful driving" to "stable force transmission".

髋关节作为下肢发力的“核心枢纽”，在这一阶段的功能从“主动发力”转向“稳定传力”。臀大肌的激活度从30米前的65%降至60%，但收缩的“力效持续时间”从0.03秒延长至0.04秒。

This means that muscles no longer pursue "instantaneous bursts of power," but rather use "slow and continuous force exertion" to make the hip extension process smoother, avoiding energy waste caused by excessive force exertion.

The activation level of the gluteus medius and gluteus minimus is stabilized at 25%-30%. Through precise concentric contraction, the abduction angle of the hip joint is controlled, so that the angle between the thigh and the trunk is always kept at about 45° when the thigh swings. This avoids both "excessive abduction increasing air resistance" and "muscle friction and wear caused by excessive adduction".

The activation pattern of the iliopsoas muscle has also undergone a key shift.

Previously, the main movement was "concentric contraction pulling the leg swing," but now it has shifted to "rapid alternation between eccentric contraction and concentric contraction."

When the thigh swings forward, the swing speed is controlled by eccentric contraction to avoid excessive forward extension of the thigh due to inertia; before the thigh pushes off the ground backward, a brief concentric contraction is used to store "initial kinetic energy" for the push-off.

This "flexible" activation mode reduces Bolt's hip joint's "leg swing-push-off" connection time to 0.02 seconds.

It achieves almost "seamless integration".

It significantly improves the continuity of lower limb movements.

40 m.

Usain Bolt's knee joint.

From "actively exerting force" to "buffering and transmitting force" role adaptation.

Compared to the acceleration zone, Bolt's knee joint shifts from "active propulsion" to a dual function of "buffering and force transmission" in the 30-50 meter range.

The activation rate of the quadriceps decreased from 75% before 30 meters to 65%-70%.

However, the "timing of force exertion" during contraction is more precise—full force is exerted only during the "critical 1/3 of the stroke" when the knee joint extends from a bent position to near straight.

The remaining strokes are sustained by the muscle's "elastic potential energy" to maintain the extension speed.

This "precision exertion" strategy can reduce the energy consumption of the quadriceps by 15%-20%.

The hamstring activation rate increases to 35%-40%. In the later stages of knee extension, the hamstrings slowly lengthen the muscle fibers through eccentric contraction, buffering the impact of excessive knee extension and preventing ligament damage caused by high-speed push-off.

This coordinated "knee extension-knee protection" mode ensures that the force on Bolt's knee joint during high-speed movements is always kept within a safe threshold, with the force fluctuation not exceeding 10%.

It is worth noting that Bolt's "torque transmission efficiency" in his knee and ankle joints reaches its peak after he enters the middle of the race.

The knee extension torque is transmitted to the ankle joint "without loss" through the calf muscles, so that the ankle joint's push-off reaction force and the knee joint's propulsive force are "superimposed in the same direction".

Motion capture data during training showed that the torque loss rate transmitted from the knee joint to the ankle joint was only 2%.

It is far lower than its previous 8%-10%.

This "efficient power transmission" becomes the key support for approaching maximum speed.

45 m.

Bolt's ankle.

An efficiency upgrade from "ground-pushing acceleration" to "elastic extension".

In the 30-50 meter range, the function of the ankle joint is upgraded from "active ground pulling" to "elastic extension", becoming the "end-point energy amplifier" for lower limb power generation.

The activation level of the calf muscles is maintained at 75%-80%, but the contraction pattern presents an efficient "eccentric-centripetal" cycle: when the foot contacts the ground, the muscles slowly contract eccentrically at a speed of 0.15m/s, absorbing the ground reaction force through the elastic deformation of the muscle fibers, and converting the impact energy into "elastic potential energy".

As Bolt's foot was about to leave the ground, his muscles quickly switched to concentric contraction, releasing elastic potential energy and causing his ankle joint to rapidly extend from a 35° flexion to 175°, generating a powerful push-off force.

This "elastic force exertion" mode improves energy utilization by 30% compared to simple centripetal contraction, which is equivalent to outputting 15%-20% more propulsion force per step.

At the same time, the "elastic cushioning" function of Bolt's arch was maximized.

The activation level of small muscle groups such as the adductor hallucis and flexor digitorum brevis in the arch of the foot is maintained at 20%. Through continuous isometric contraction, the arch structure of the foot is maintained, which increases the "buffer area" when the forefoot contacts the ground by 10%, further improving the storage efficiency of elastic potential energy.

The activation level of the tibialis anterior muscle remained stable at 35%.

Contract your forefoot before it lands to ensure "precise ground contact" and avoid energy loss and impact damage from landing on your heel.

Data shows that adopting this "forefoot-first strike" pattern can reduce Bolt's energy consumption per step during the race by 8%-10%.

To conserve key kinetic energy for rapid breakthroughs.

50 m.

Regarding the swing arm.

From "dynamic optimization" to "stable throttling," the focus has shifted to functionality. Bolt's upper limb arm swing technique has been completely finalized, with no further angle adjustments required. The elbow flexion angle is now stable at 100°-105°, and the arm swing trajectory and muscle activation mode have entered a "standardized cruise" state.

This "solidification" is not a technological stagnation, but rather an "energy throttling" achieved by "reducing motion variables," allowing the upper limbs to shift from "active propulsion" to "low-consumption stability," and allocating more muscle energy to the lower limbs for rapid breakthroughs.

Bolt was initially puzzled by this as well.

But soon.

He understood.

Because that's exactly how I kept running.

More comfortable.

In other words.

In the 30-50 meter range, Bolt's muscle energy distribution strategy undergoes a fundamental change.

Instead of concentrating energy on the lower limb explosive muscle groups, it achieves "endurance adaptation" of all muscles under "high-speed load" through "system balanced distribution".

This reconstruction is not about "weakening explosive power," but rather about activating more "endurance-type muscle fibers" while maintaining explosive power, extending the duration of high speed, and creating a "time window" for the final breakthrough.

Yes.

The whole routine.

All of this is for the sake of speed.

Run the first half of the 30-50 meter stretch.

This is Bolt's "final build-up period" as he approaches his top speed.

The advantages of the bent-arm technique at this stage are mainly reflected in three aspects: "posture fixation to reduce wear and tear, muscle synergy to improve efficiency, and energy distribution to maintain endurance."

This greatly boosted Bolt's career.

First posture shaping reduces losses.

An upright and stable torso posture and a fixed bent-arm swing pattern reduce the overall energy transfer loss rate to 3%-4% and reduce the ineffective energy consumption of each step by 8%-10%.

The second muscle works together to improve efficiency.

The "elastic extension" of the lower limbs and the "inertial arm swing" of the upper limbs increase the "force efficiency density" of muscle exertion by 15%-20%, achieving "outputting more propulsion with less energy".

The third energy distribution maintains endurance.

The synergistic activation of fast and slow muscle fibers, and the deep synergy between respiration and muscle metabolism, delay lactic acid accumulation and improve muscle endurance at high speeds by 25%-30%.

When Bolt crossed the 50-meter mark, his speed had already reached over 12 meters per second.

It is only 0.05 m/s away from the peak speed.

And this final 0.05m/s.

That's the key.

With body posture, muscle condition, and energy reserves all in "optimal breakthrough state," one only needs to exert force for another 5-10 meters to reach personal speed limit.

The technical design at this stage perfectly embodies the fusion of "scientific training" and "talent development".

By reducing ineffective energy expenditure through precise technical adjustments and protecting muscle condition through scientific energy allocation, the path to breaking through peak speed was ultimately paved.

It was achieved through high-tech calculations from the United States.

The final answer given to Bolt.

Sue, thank you.

I was originally worried about what kind of situation would allow me to trigger the fourth stage of the six-second burst on my own.

After all, even Bolt, the saint of track and field.

Achieving this level is not easy.

At least based on his original technical skills.

It's hard to do.

But right now.

Start with bent arms.

This provided him with a new breakthrough.

There's really no complicated reason.

Because he started faster, his acceleration will also be faster, given Bolt's abilities.

He was originally a player who focused on speed and finishing in the second half of the game.

At a higher speed in the first 50 meters.

Naturally, one can achieve even greater bursts of speed.

When Bolt's bent-arm start completed its mission in the early stages of acceleration and seemed to have left the core stage of the technique, the "hidden advantage" he left behind was like a domino effect, from controlling the rhythm of acceleration to accumulating speed in the first half of the race, laying a solid foundation for finally breaking the limit speed of 46km/h (about 12.8m/s).

The bent-arm start is not an isolated "starting action," but a "speed catalyst" that runs throughout the entire race—it optimizes the power output and posture control during the starting phase, allowing Bolt to get into the zone more quickly during acceleration.

This allowed Bolt to "approach the top speed threshold" earlier in the first half of the race.

The arrival of the bent-arm start had an impact on Bolt breaking the 46km/h limit that went far beyond simply "accelerating ahead of time"—it was like a "key".

It unlocks the maximization of hip delivery efficiency and simultaneously optimizes trunk stability, lower limb force chain, and even the synergy of neural responses. These are the overlooked "hidden effects."

Together, they constitute the secret to his extraordinary speed.

This makes excessive hip extension no longer an isolated movement.

Rather, it is a natural explosion of the entire technology chain.

Breaking the speed limit of 46km/h tests not only instantaneous explosive power, but also the "precise distribution of energy throughout the race"—and the bent-arm start saved Bolt "critical energy reserves", becoming the "final piece of the puzzle" for him to break through the speed ceiling.

During a normal start, Bolt consumes 30%-35% of his muscle energy during the acceleration phase due to his height, excessive inertia, improper arm swing, and unbalanced posture.

Bolt's bent-arm start, by reducing ineffective movements and optimizing power transfer, keeps the energy consumption of the acceleration run at 25%-28%. What seems like a difference of only 5%-7% in energy consumption has a "butterfly effect" throughout the 100-meter race.

In the first half of the race, his muscle fatigue level was much lower than his opponent's, the explosive power of his fast-twitch muscle fibers decayed more slowly, and the endurance support of his slow-twitch muscle fibers lasted longer.

This "energy reserve dividend" is fully manifested during the rapid burst phase of 50-80 meters.

When opponents begin to experience muscle weakness and a decline in speed due to excessive energy consumption in the early stages, Bolt still has enough energy to activate "reserve muscle fibers," enabling him to achieve excessive hip extension and extreme ankle extension.

It was this "little bit of energy" saved by the bent-arm start that allowed him to "squeeze out" another 0.5-1 m/s of propulsion when his speed approached 46 km/h, ultimately breaking through the limit threshold of human speed.

For an athlete of his level.

Once the threshold is breached.

That's no longer a problem.

Sue.

thank you.

To use a phrase from your Eastern tradition...

This time, when I was dozing off.

You just happened to bring me a pillow.

Although Mills had been paying attention to this technology since 06.

But regardless of the circumstances, the source of this technology is currently Su Shen.

Bolt would like to say thank you to him.

It's not fake.

Let me show you some history.

The fourth stage of the six-second burst of free control.

How terrifying must it be?

A burst of speed in six seconds.

Bolt felt his speed increasing and showing no signs of stopping; this exhilarating feeling made him feel as if he were moving with effortless grace...

Just keep increasing the speed, increasing it, increasing it, and increasing it again.

When comparing it to Moscow.

That kind of speed is entirely generated by the extreme pressure and extreme focus of the body.

Only once.

It's more like it's controlling its own speed.

He put it in gear himself.

I stepped on the gas myself.

A burst of speed in six seconds.

Phase Four.

open!

Sue!
Die!

This shout was something Bolt had been holding back for years.

at last.

In Lausanne.

Beside Su Shen.

It erupted violently.