The Su God of the Reopening of the Sports Arena

Chapter 2509 Physics... no, kinematics no longer exists?!

This guy.

He was actually Jacobs' future head coach.

It was he who, with Jacobs turning around, achieved the ultimate double-peak time in human history.

It made a splash in Tokyo in 2021.

At this moment, he actually had the idea of ​​training bi-peaked athletes, but as you know, this idea was unlikely to be popular.

It's unlikely that any athlete would follow him in degrading themselves like that, given that a track and field athlete's career is very short.

Only newcomers like Jacobs, who had just transferred, had no other choice.

Of course.

History has proven that he succeeded.

But it's only 2015, and he himself doesn't know if he can succeed.

Therefore, when they saw Su Shen suddenly unleash it.

This gave him a glimmer of hope.

He even wanted to send the scene to everyone around him after the game.

We must make sure everyone opens their dog eyes wide and sees this clearly.

A young leader in the field of sports research.

Sue.

He uses this technology all the time.

This shows that the technology works.

What else do you dogs have to bark about?
My insistence was correct.

If there is one, there can be two.

I want to train an athlete in Europe who can use this system!
So how did Su Shen solve the first four problems?
The return to peak speed after 60-70 meters is by no means a recovery of the efficiency of single-chain power generation.

Rather, it is the front and rear watch chains that are in a state of fatigue.

By breaking through metabolic, neural, and mechanical constraints, a high-level reshaping of coupling relationships is achieved, resulting in a rebalancing of tension, a closed loop of energy feedback, more precise temporal coupling, and smoother force transmission coupling.

These conditions need to be met.

This is the core scientific principle behind the second outbreak.

It is also the only support.

It can be said that each link is interconnected, and none can be omitted.

Compared to the basic coupling of 0-60 meters, the double-chain coupling during the secondary burst is a higher-order synergy after fatigue adaptation, which is more stable, efficient and fault-tolerant, and can be achieved even under conditions of muscle fatigue and insufficient energy.

Achieving rapid re-output is specifically reflected in the four core dimensions of coupling reshaping.

All four dimensions must be advanced simultaneously; none can be omitted.

When faced with the imbalance of tension between the two chains, the bidirectional anchoring of constraint and force fails.

Su Shen adopted a fatigue state rebalancing approach based on the double-chain tension, re-established the anchoring relationship, and achieved complementary and compensatory tension.

Because the prerequisite for a second rapid return is the rebalancing of the tension between the front and back of the watch chain.

After experiencing a tension imbalance of 60-70 meters.

The body adapts to fatigue and compensates through muscle movement, allowing the double-chain tension to regain a dynamic balance.

Achieve two-way anchoring of force and constraint.

Even when muscle contraction efficiency decreases, it can still compensate through tension complementarity.

Ensure a stable output of propulsion.

This is the mechanical basis for the second explosion.

Without tension equilibrium, there is no secondary coupling.

From the perspective of tension regulation mechanism, in the 60-70 meter range of Suarez's run, tension imbalance triggers the body's compensatory regulation. The central nervous system perceives the difference in tension between the two chains through proprioceptive feedback, and adjusts the degree of muscle activation in a targeted manner, thereby achieving tension complementarity.

For the posterior chain, fatigue leads to a decrease in active tension. The central nervous system preferentially activates fast-twitch type IIa fibers in the posterior chain that have a lower degree of fatigue, while mobilizing synergistic muscle groups, such as the adductor magnus, to supplement the force and increase the overall tension of the posterior chain.

Ensure sufficient tension on the front chain.

For the anterior superficial chain, fatigue leads to a decrease in oscillating contraction tension and eccentric constraint tension. The central nervous system optimizes the contraction rhythm of the anterior superficial chain muscles, prolonging the eccentric contraction time and shortening the concentric contraction time. By lengthening the contraction, the eccentric constraint tension is increased, thus compensating for the insufficient concentric contraction tension.

Ensure stable tensile force on the back chain.

From the perspective of tension anchoring relationship reconstruction, the two chains form a "fatigue-state complementary anchoring" during the secondary burst. Unlike the equilibrium anchoring of 0-60 meters, it takes one tension as the core and the other tension as the active adaptation to achieve efficient utilization of tension.

Specifically, the posterior superficial chain is based on elastic tension, with active muscle tension as an auxiliary force, and generates stable pulling force through the elastic rebound of the Achilles tendon and hamstring tendons.

The front chain actively adapts to the elastic tension of the rear chain, adjusting the centrifugal contraction amplitude to ensure that the constraint tension matches the extension tension.

The anterior chain uses the oscillating inertial tension as its core and the active contraction tension of the muscles as an auxiliary force to generate a continuous pulling force through the inertia of the lower limb swing.

The rear bracelet actively adapts to the inertial tension of the front bracelet, adjusting the lengthening range of the energy storage to ensure that the energy storage tension matches the swing tension.

This complementary anchoring tension relationship can effectively compensate for the tension loss caused by muscle fatigue.

To achieve a rebalancing of the tensile tension of the double chains.

It provides stable mechanical support for the second extreme speed.

This solves the first problem.

Then proceed to the second point.

The energy feedback between the two chains is interrupted, and the closed loop of energy storage and release is broken.

Faced with this problem, Su Shen's approach was—

Fatigue-state re-closing of the double-chain energy feedback system.

Energy flow is restructured, and losses are minimized.

What is meant by fatigue-state re-closing of the double-chain energy feedback?

Energy flow restructuring with minimal losses?

It's actually quite simple. The core of the second rapid return is the re-closing of the energy feedback between the front and back chains. So after experiencing an energy interruption of 60-70 meters, Su Shen's body begins to adapt and regulate metabolism through the elastic system.

Reconstruct the dual-chain energy transfer path.

To achieve an efficient cycle of energy storage and release.

At the same time, minimize energy loss.

This allows for efficient energy exchange between the two chains.

Supports extremely high-speed output.

This is the energy basis for the second eruption.

Without energy feedback in a closed loop, there is no secondary extreme speed.

On the one hand, the dual-chain elastic system completes fatigue state adaptation, achieves precise synchronization of energy storage and release, and reconstructs the core link of energy mutual feedback.

The elastic structures of the posterior chain, such as the Achilles tendon and hamstring tendon, have adapted to high-intensity loads after high-frequency SSC stimulation 60 meters in advance. During the short adjustment period of 60-70 meters, the viscoelastic properties of the elastic structures are re-optimized, the rebound rate is accelerated, and energy leakage is reduced, even under muscle fatigue.

It can still efficiently complete the cycle of "being stretched and lengthened by the front chain to store energy - being pushed and contracted to release energy".

The quadriceps tendon, tibialis anterior tendon, and fascia of the anterior chain also complete the fatigue state adaptation, improve the eccentric energy storage efficiency, and can store more energy when pulled by the posterior chain, while releasing it quickly during swinging, thus accelerating the forward swing.

More importantly, the energy storage and release timing of the dual-chain elastic system is resynchronized with the muscle exertion timing, with the peak value of the posterior chain elastic release coinciding with the peak value of muscle exertion, and the peak value of the anterior chain elastic release coinciding with the peak value of oscillation acceleration.

Maximizing energy release efficiency provides core support for the closed-loop energy feedback mechanism.

On the other hand, the body activates its metabolic compensation mechanism.

To make up for the energy gap.

Provides energy security for the dual-chain energy feedback.

After 60 meters, Su Shen's body suffered from insufficient energy supply from the phosphagen system.

Instead of waiting to die, he immediately switched his body to a new metabolic mode.

The proportion of energy supplied by the glycolysis system has increased.

It also accelerates the rate of ATP resynthesis in the phosphagen system.

Creatine kinase rapidly catalyzes the conversion of ADP into ATP, thus replenishing energy expenditure.

At the same time, under muscle fatigue, Su Shen's body optimizes energy allocation, thereby minimizing energy consumption of irrelevant muscle groups and prioritizing the supply of limited energy to the core muscle groups of the anterior and posterior chains.

Ensure the energy demand for dual-chain energy storage and release.

In addition, the energy transfer pathways between the two chains have been reopened.

After fatigue adaptation, the conduction efficiency of the core fascia and lower limb fascia recovers, allowing the centrifugal energy stored in the anterior surface chain and the elastic energy stored in the posterior surface chain to flow smoothly.

This forms a closed loop of "front watch chain energy storage - release to assist swinging - pull rear watch chain energy storage - rear watch chain release to assist pedaling - pull front watch chain energy storage".

Energy exchange is highly efficient and waste-free.

To support the continuous output of the secondary high speed.

The third point is the misalignment of the timing coupling of the two chains.

The phase difference between pulling and exerting force increases.

Su Shen's choice for this problem is to refine the fatigue state of the dual-chain time-coupled system.

Neural regulation is restructured, and the phase difference is reduced to zero.

The key to the second rapid regression is the re-precision of the timing coupling between the front and rear chains. After experiencing a timing misalignment of 60-70 meters, the central nervous system reconstructs the dual-chain control mode through feedback calibration and fatigue adaptation, thereby achieving zero phase difference between tension and force exertion.

Even under conditions of nervous fatigue.

It can still maintain accurate timing.

Ensure continuous output of propulsion.

This is the neural basis for the second outbreak.

Without precise temporal coupling, there is no continuity of secondary bursts.

The "fatigue-state regulation optimization" of the central nervous system is the core of the temporal coupling and re-precision. Unlike the active precision regulation of 0-60 meters, the second burst is based on feedback-based adaptive regulation, which has stronger fault tolerance.

The central nervous system rapidly senses the timing deviations of the double-chain force exertion and tension through proprioceptors such as muscle spindles and Golgi tendon organs, and sends regulatory commands in real time to correct the timing of muscle activation and inhibition.

First, optimize the activation sequence of the double-chain muscles so that the initiation time of the active contraction and swing of the front chain is exactly delayed after the end time of the push-off force of the rear chain, thus avoiding premature pulling of the rear chain by the front swing and ensuring that the force of the rear chain is fully released.

Secondly, the inhibition sequence of the double-chain muscles is optimized so that the start time of relaxation and stretching of the posterior chain is synchronized with the start time of swing acceleration of the anterior chain, maximizing the pulling force of the anterior chain and maximizing the energy storage of the posterior chain.

Third, optimize the rhythm of the dual-chain force application, unify the frequency of pulling and force application, and make the swing frequency of the front chain and the extension frequency of the rear chain completely consistent, so as to avoid force loss caused by rhythm disorder.

At the same time, the neuromuscular "rapid activation-inhibition" mechanism is restarted, and its efficiency is far greater than before fatigue, which is the key guarantee for precise temporal coupling.

In sprinting, the coordination of the two chains requires muscles to quickly activate and exert force, and quickly inhibit and relax, in order to achieve precise timing.

After 60 meters, nerve fatigue causes the efficiency of this mechanism to decrease, while during the second burst, the body adapts through fatigue, which improves the transmission efficiency of the neuromuscular junction.

The accelerated release of acetylcholine shortens the time it takes for muscles to switch between activation and inhibition.

So Su Shen had no choice but to do—

The front chain switches from eccentric relaxation to centripetal contraction.

The chain then switches from centripetal contraction to centrifugal relaxation.

All achieved precise regulation.

Focus on one thing.

In addition, the brain's motor cortex has enhanced ability to coordinate the two chains, treating the anterior and posterior chains as a whole force unit rather than independent muscle groups. This results in simpler and more precise control commands, avoiding errors caused by individual control of a single chain.

It can also bring the phase difference of the timing coupling of the two chains to zero.

The propulsion force is continuous and without breaks.

It was able to return at lightning speed.

The fourth question follows immediately.

The double-chain force transmission coupling breaks.

The connection between the fulcrum and the path fails.

Su Shen's solution here is—

The fatigue state of the double-chain force transmission coupling is smoothed again.

Pivot stability reconstruction.

Optimize and streamline the path.

The reason for doing this is because...

Su Shen knew better than anyone else.

The guarantee of the second rapid regression is the smooth re-coupling of the force transmission between the front and rear chain surfaces.

After experiencing a 60-70 meter transmission rupture, the body reconstructs the stability of the mechanical fulcrum through core compensation and movement pattern optimization, clears the force transmission path, and achieves efficient integrated output of dual-chain forces.

Even under conditions of fulcrum fatigue, force loss can still be reduced through compensatory stabilization and path optimization.

This is the mechanical transmission basis for the secondary explosion.

Without conductive coupling, there is no efficient secondary high-speed output.

And that’s it.

The "fatigue-state compensatory stability" of the core fulcrum is the central guarantee for smooth force transmission and coupling.

If the core muscles are fatigued, it will be impossible to maintain the high-intensity contraction required for 0-60 meters.

However, at this point, the body can actually compensate through the coordinated action of muscle groups.

This achieves relative stability of the core.

That's exactly what Su Shen did.

The transverse abdominis and multifidus muscles are core deep stabilizing muscle groups.

When fatigue sets in, the central nervous system mobilizes superficial muscle groups such as the internal and external oblique muscles and erector spinae muscles to replenish the force.

Through the coordinated contraction of superficial muscle groups, the trunk's antirotation, antiextension, and antitilation capabilities are maintained, providing a stable central anchor point for the transmission of double-chain forces.

At the same time, the tension of the core fascia is readjusted, and the fascial tension compensates for the lack of muscle strength, further stabilizing the core fulcrum.

Ensure that the push-off force of the rear chain and the swing force of the front chain can be effectively integrated through the core to avoid force leakage.

Next, the "neutral position reduction" of the pelvic fulcrum is the key connection for smooth force transmission and coupling. A 60-70 meter anterior or lateral pelvic tilt causes misalignment of the double chain connection. During the second burst, the body achieves pelvic neutral position reduction through the coordination of the core and hip muscles.

The iliopsoas (anterior superficial chain) and gluteus maximus (posterior superficial chain) are the core muscle groups for adjusting pelvic position. The central nervous system optimizes the force balance between the two, and the iliopsoas of the anterior superficial chain is appropriately relaxed to avoid anterior pelvic tilt.

The posterior gluteus maximus should be moderately tightened to prevent posterior pelvic tilt.

At the same time, it mobilizes the hip abductor muscles to work together and correct pelvic tilt.

Return the pelvis to a neutral position.

Ensure that the attachment points of the front and rear watch chains are in the correct positions.

The direction of force is consistent.

The tension of the double chain is balanced.

in this way.

The force transmission path will then become smooth again.

Of course, the ankle joint should not be ignored either.

This is because.

"Landing mode optimization" and end-point pathway unblocking of the ankle joint fulcrum.

It is the final guarantee for smooth force transmission and coupling.

If you want a second outbreak.

Athletes can then use proprioceptive feedback to optimize their landing angle and timing.

Land on the outside of your forefoot first.

Roll quickly to the inside of your forefoot to reduce impact upon landing.

At the same time, it allows the anterior tibialis anterior muscle of the anterior chain to efficiently complete eccentric buffering.

The posterior chain calf muscles quickly engage in push-off and extension, with precise transmission and connection of force at the end of the movement.

At the same time, the compensation of the fascia and muscles around the ankle joint is reduced, and the blockage of the force transmission path is cleared.

Then the push-off force of the chain is efficiently transferred to the ground through the ankle joint.

Ground reaction force is efficiently fed back to the torso through the front chain.

The force transmission coupling at the ends of the double chains is highly efficient.

Further improve the efficiency of propulsion output.

At the same time, Su Shen chose to optimize the coupling of upper and lower limb coordination.

This will further facilitate the transmission of dual-chain forces.

During the second burst, the upper limb swing and the lower limb double chain force are precisely coupled.

The amplitude and frequency of the swing arm are perfectly synchronized with the pulling force frequency of the front and rear watch chains.

Additional torque is generated by trunk rotation and transmitted to the lower limb double chains.

It compensates for insufficient strength caused by lower limb muscle fatigue.

Further enhance the output intensity and duration of the secondary high-speed boost.

Bang bang bang.

Further optimization of fatigue state of double-chain muscle fiber recruitment is then performed.

Fiber type matching.

Fundraising efficiency has increased dramatically.

The core of the second rapid regression is the re-optimization of the fatigue state of the recruitment of anterior and posterior chain muscle fibers. After experiencing fatigue decay caused by overactivation of 60-70 meters of fast-twitch fibers, the central nervous system completes the precise adaptation of muscle fiber subtyping and reconstruction of recruitment patterns based on fatigue perception.

Since it's a reconstruction.

A single breakthrough.

Certainly not.

We also need...

Break free from the constraints of relying on a single fiber.

Because it enables the layered activation and synergistic exertion of different types of fibers, even when muscle fiber contraction efficiency decreases and metabolic products accumulate.

At this point, if peak contraction force can still be maintained through a leap in fundraising efficiency... it means...

You have touched one of the core kinetic energy sources of this second burst.

Without fiber recruitment optimization, there is no continuous output at the second-fastest speed.

This is also the key to Su Shen's ability to make a rapid return after 70 meters.

From the perspective of fiber classification and adaptation logic.

During the 0-60 meter phase, the epidermal chain primarily recruits fast-shrinking type IIx fibers, relying on their rapid contraction characteristics to achieve initial acceleration. However, these fibers have a low fatigue threshold and are rapidly metabolized.

The 60-70 meter range has entered a period of fatigue decay, with a significant decline in contraction speed and strength, directly leading to insufficient kinetic energy for the dual-chain force exertion.

During the second burst phase, the central nervous system completes the adaptation and switching of fiber subtypes through precise feedback from muscle spindles and motor neurons, no longer pursuing the ultimate activation of a single fiber.

Instead, it constructs a layered adaptation system of "core-led + auxiliary compensation + reserve supplementation". For the posterior chain, the core muscle groups preferentially recruit fast-twitch type IIa fibers with relatively low fatigue levels.

This type of fiber combines the contraction speed of type IIx fiber with the fatigue resistance of type I fiber. It can maintain the speed of force exertion while extending the duration of force exertion. At the same time, it can switch the fatigued type IIx fiber to elastic auxiliary fiber, relying on its residual elasticity to participate in the tendon's energy storage and rebound, rather than actively exerting force.

Reduce unnecessary consumption.

For the anterior chain, the oscillating muscle group adopts an adaptation model of "Type I fibers for stabilizing rhythm + Type IIa fibers for increasing speed".

Type I fibers dominate the centrifugal stability and rhythm control during the oscillation process, avoiding disordered oscillation under fatigue.

Type IIa fibers are precisely activated during the critical period of oscillation acceleration, compensating for the insufficient acceleration caused by fatigue in Type IIx fibers, thus achieving stable maintenance of oscillation speed.

From the perspective of the mechanism for improving recruitment efficiency, the muscle fiber recruitment during the second burst breaks through the "synchronous and comprehensive recruitment" mode of 0-60 meters and transforms into a higher-level mode of "precise targeted recruitment + collaborative compensatory recruitment".

He hasn't wasted these past few years.

After continuously improving their physical condition through training.

The accuracy and efficiency of fundraising have also improved significantly.

This is the core optimization direction for adapting to the advantages of Su Shen's neuromodulation.

On the one hand, the central nervous system accurately identifies incompletely fatigued muscle fiber clusters in each muscle group of the anterior and posterior superficial chains based on the proprioceptive feedback of muscles under fatigue.

Implement targeted activation to avoid ineffective recruitment of fatigued fibers, thereby reducing energy waste and metabolic burden.

This allows each nerve impulse to be converted into effective contractile force.

On the other hand, the activation of cross-muscle group collaborative compensation recruitment mechanisms is breaking through the limitations of single muscle group fiber recruitment.

It was as if sparks reignited within Su Shen's body.

When the posterior chain exerts force, in addition to the core gluteus maximus and hamstrings, the central nervous system simultaneously recruits the reserve fibers of the hip external rotator muscles and the deep calf flexors to fill the blind spots in posterior chain exertion.

This is to avoid imbalance in the push-off and extension caused by the weakening of localized force.

During the swing of the anterior chain, synergistic fibers of the iliopsoas muscle and superficial abductor fibers of the anterior thigh are recruited simultaneously, strengthening the eccentric constraint and concentric acceleration during the swing and compensating for the fatigue of the core swinging muscle group.

This allows the efficiency of nerve impulse transmission in Su Shen to leap forward during fatigue adaptation.

The resistance to transmission at the junction between motor neurons and muscle fibers is reduced.

The precision of acetylcholine release has been improved.

The timing and magnitude of fiber recruitment are made to perfectly match the requirements of dual-chain coupling.

To achieve "fundraising is the first step to action, and action is the first step to high efficiency", providing continuous momentum for the second phase of rapid development.

……

However, people cannot see these principles; what the naked eye can see is only the following image.

Bang bang bang.

Once the 70-meter marker line is crossed.

Su Shen first stabilized his body's center of gravity in a neutral position, without swaying at all.

The previously somewhat heavy push-off and swing instantly switched rhythm.

From here, we will gradually increase our speed and return to our peak.

Every step is closely linked to the core of dual-chain coupling and reshaping.

The dynamic images are as clear as a frame.

Su Shen's body weight was firmly anchored in a neutral position.

Without the slightest deviation or wobbling, the muscle fatigue accumulated from the previous race was completely dispelled by precise technical movements.

The slightly heavy pedaling rhythm switched instantly.

Rapidly rise from the critical point of exhaustion in one's future.

Step by step, we are moving towards maximum speed.

Every step of the swing is closely linked to the coupling and reshaping of the front and rear watch chains.

Keep your core muscles constantly engaged to provide rigid support.

The force transmission path is unobstructed throughout.

Dynamic force application is like the meshing of precision gears.

There was not a single unnecessary consumption.

The rapid rebound began immediately from 70 meters.

Steadily advance towards the peak.

The moment of landing on the first step at 70 meters.

The outer side of the forefoot makes a firm landing first, with a precise and unbiased placement. The ankle then flexes slightly, and the anterior superficial chain muscles, tibialis anterior and peroneus longus and brevis, respond first, coordinating with the quadriceps to lengthen and perform an eccentric contraction.

The movements are fluid and not stiff, and the ground reaction force is steadily absorbed. The force is evenly distributed to the entire forefoot, without any localized excessive pressure.

At the same time, the Achilles tendon and hamstring tendon of the posterior chain tighten simultaneously, and the tension generated by the lengthening of the anterior chain muscle group quickly stores power. The gluteus maximus tightens slightly in an elastic state without rigid force, and relies entirely on the elastic tension of the fascia and tendons to drive the push-off preparation.

Although the hamstring muscles are fatigued, they do not actively exert force. Instead, they rely on the adductor magnus to gently compensate and steadily lock the pulling force of the posterior chain on the anterior chain.

This allows the double-chain tension to be in dynamic equilibrium.

Keep your body upright, neither leaning forward nor backward.

The center of gravity is always directly above the support point.

This will lay a solid foundation for future acceleration.

At the moment of pushing off, the elastic tension of the rear chain is released explosively first, becoming the core driving force for acceleration. The lower leg pushes off smoothly but does not lock the knee joint, always maintaining a slight flexion elastic space to avoid interruption of force transmission.

Push your hips back naturally.

The elastic potential energy stored in the tendon fascia is completely converted into forward propulsion without any upward diversion. At the same time, the anterior chain precisely matches the tension rhythm of the posterior chain, and the swinging leg swings forward rapidly with the inertia of eccentric contraction.

Bang bang bang.

The iliopsoas muscle exerts force briefly and decisively, without dragging or rushing, perfectly keeping up with the rhythm of the rear chain's push-off. The swing amplitude is precisely controlled, leaving ample space for the rear chain to push off.

To avoid conflict between the front and rear chains, the rear chain is pulled in the opposite direction by the swing inertia, allowing it to stretch and store energy at the moment the push-off ends.

The double-chain tension forms a perfect closed loop, resulting in powerful and stable extension, rhythmic and continuous swinging, and a continuous accumulation of propulsive force.

The moment of liftoff at the end of the push-off.

The posterior chain muscles relax immediately, and the Achilles tendon and hamstring tendon stretch forward with the momentum of the body. With the pulling force of the swinging anterior chain, they quickly complete the secondary energy storage without the need for additional muscle strength. The switch from exertion to relaxation is completed in milliseconds, without any unnecessary internal consumption.

The anterior fascial chain then switches to concentric contraction, the swinging leg is raised forward and upward to hip level, the front thigh muscles exert force briefly and then relax immediately, relying entirely on the swinging inertia to propel the leg forward, energy flows rapidly along the fascial chains throughout the body, and the energy stored in the swinging of the anterior fascial chain immediately feeds back to the posterior fascial chain.

The energy from the rear bracelet extension synchronously assists the front bracelet's swing, with energy feeding back to each other without any loss.

It is equivalent to...

Even if there is lactic acid buildup in the muscles.

Every bit of strength is precisely used to propel the vehicle forward.

The speed is visibly increasing.

During the mid-air transition phase, the neural regulation precisely timed the moment the rear watch chain relaxed and lengthened, and the front watch chain swung and accelerated in perfect sync, without the slightest misalignment or lag.

The swinging arm and swinging leg are fully coordinated. When the right arm swings forward, the right leg moves forward precisely, and when the left arm swings forward, the left leg follows in sync. The swinging arm amplitude is narrower but more explosive.

The angle between the upper arm and forearm remains stable, the shoulder is relaxed and lowered throughout the entire movement, without any tension or lifting. The arm swing is driven by core tension, which not only stabilizes the body's balance but also helps stabilize the torso through the centrifugal force of the arm swing. The torso does not turn, sway, or twist, and the core muscles remain continuously tense to form a rigid center.

The swing frequency and the push-off frequency were perfectly synchronized, and the previously slightly disordered power generation rhythm was completely restored. The push-off and swing states were switched in milliseconds without any interruption, the propulsion force was continuous and uninterrupted, and the speed increase became increasingly rapid.

Bang bang bang.

Upon landing again, there were signs of fatigue in the core muscles.

However, by coordinating the contraction of the transverse abdominis, internal and external oblique muscles, and erector spinae muscles, the torso is firmly stabilized, without collapsing the waist, twisting the hips, sinking the shoulders, or jutting the head. The pelvis is locked in a neutral position, becoming a stable hub for the transmission of dual-chain forces.

The push-off force from the rear chain is steadily transmitted upwards along the back of the thigh, hip, and core, and then seamlessly transmitted along the torso to the front chain without any leakage of force. The ankle joint rolls smoothly upon landing, quickly transitioning from the outer side of the foot to the entire forefoot bearing the force. The front chain cushions the force evenly, and the ground reaction force is quickly fed back to the core along the instep, front of the calf, and front of the thigh.

The double-chain force transmission path is completely unblocked.

The pushing force and swinging force are no longer separate forces, but are integrated into a single, purely forward-moving force.

My body moved more and more lightly.

The feeling of fatigue was gradually dispelled by efficient exertion.

Its speed is just one step away from the top speed.

Not even close.

It was so close!

Su Shen felt that he was still one step away from success.

Another bundle of firewood needs to be added before it can be lit again.

75 m.

The speed has actually rebounded significantly.

The dual-chain coupling enters a higher-order cooperative state.

The rapid recovery has entered a critical stage.

At this moment, Su Shen...

Each step involves a more compact swing.

The stride frequency remained unchanged and even slightly increased. The posterior chain still primarily relied on elastic tension for power, with active muscle exertion only providing auxiliary support, maximizing fatigue resistance. The Achilles tendon's rebound strength increased rather than decreased.

The tension connection between the gluteus maximus and hamstring tendons becomes increasingly smooth, with no gaps in force exertion.

The front chain swing rhythm is more stable, the switching speed between eccentric and concentric contractions is further improved, the tension complementarity is maximized, and the height of the swing leg is always kept stable at the hip level.

Don't deliberately raise your spirits and waste your energy.

It also does not reduce the stride length.

During the swing, the inner thigh muscles tighten simultaneously to prevent the legs from abducting and shifting outward, allowing the swing force to be fully focused forward.

The torso posture becomes increasingly upright, with the head straight, neck relaxed, shoulders lowered, and the body's longitudinal axis kept perpendicular to the ground, minimizing air resistance and eliminating any unnecessary swaying during running.

Every inch of body posture serves to accelerate forward, and the accumulation of lactic acid in the muscles is counteracted by efficient energy flow and elastic force exertion, resulting in a smooth and effortless exertion.

It reveals a light yet explosive power.

Each step landing is precisely coordinated with the push-off.

The pace of progress became increasingly smooth, and the speed continued to climb rapidly.

Okay, almost there.

Just a little bit.

76 meters to 78 meters.

The rapid recovery has entered a critical sprint phase.

The dual-chain coupling has been upgraded from high-level collaboration to seamless integration, with no trace of force switching. Force transmission and energy flow are completely integrated, and the speed is getting closer and closer to the peak.

At this moment.

When landing and providing support.

The forefoot strikes the ground, no longer simply catching the outside of the foot, but rather the outside of the foot lands first and then instantly transitions to the entire forefoot bearing the force. The support time is further shortened, and the eccentric contraction of the anterior chain tibialis anterior and quadriceps femoris muscles is more layered.

Superficial muscle groups are responsible for cushioning and dissipating force.

The deep muscle groups firmly anchor the tension.

To prevent the leakage of ground reaction force.

At the same time, the lengthening range is precisely controlled.

It stores energy for subsequent centripetal contraction.

The elastic chain formed by the Achilles tendon, hamstring tendon, and gluteus maximus exhibits a wave-like tension transmission, extending upwards from the Achilles tendon through the back of the calf and the back of the thigh to the gluteus maximus. The tension progresses layer by layer and is transmitted segment by segment without any breaks.

Fatigued muscle groups rely entirely on the elastic linkage of the fascial chain to store energy, without the need for additional compensatory force exertion.

During this phase, the core muscles maintain high intensity and stability, and the transverse abdominis muscle continues to tighten deeply, keeping the pelvis locked in a neutral position and becoming the core hub where the tension of the two chains converges.

The swing tension of the front chain and the extension tension of the rear chain converge precisely and are efficiently converted here, so that the body's center of gravity is always in the optimal range slightly forward and directly above the body, which ensures the power to propel forward.

It also avoids excessive forward leaning, which can lead to physical exhaustion.

Every step lands like a precise lever.

The ground reaction force is maximized and converted into acceleration power.

Push off and extend your leg to generate power.

The elastic potential energy of the rear chain is released at a uniform and continuous speed, without any unnecessary consumption of instantaneous bursts. The extension range of the lower leg is precisely controlled, and the knee joint always maintains a slightly flexed and elastic state, which not only ensures the extension force, but also leaves enough space for the next round of power accumulation.

The hip thrust amplitude is more restrained yet more penetrating compared to 70 meters.

Each time the hips push back, the torso moves forward horizontally.

Rather than rising and falling.

This is……

Minimize vertical energy loss.

The instant it leaves the ground.

The energy feedback between the two chains of Su Shen has reached its peak.

The posterior chain muscles relax immediately after the extension, and the Achilles tendon and hamstring tendon are quickly stretched forward due to the body's inertia.

At this moment, the front chain swing leg is in the forward acceleration phase.

The forward tension generated by the swing precisely pulls the watch chain in the opposite direction.

Then the watch chain completes efficient energy storage in a fully relaxed state.

No extra muscle strength is required.

The front chain is at its highest point when the swinging leg reaches its highest point.

Switch to eccentric contraction, quickly relax the muscles on the front of the thigh, and use fascial tension to extend the lower leg forward.

The soles of the feet naturally curl upwards.

Prepare for the next round of implementation.

Energy flows rapidly along the fascial chains throughout the body.

The energy is transferred from the rear chain extension end to the front chain swing end.

Then it flows back from the front watch chain to the power storage end of the rear watch chain.

There is almost no loss during the circulation process.

Even when the muscles are in a state of deep fatigue.

Su Shen can now rely on the elasticity of the fascia to complete the energy circulation.

To provide continuous power support for acceleration.

The so-called "Land Superman".

Except for Bolt.

That's probably what happened to Su Shen.

But I haven't played it yet.

After all, it hasn't met Su Shen's requirements yet.

He really wants to get back to top speed.

Let's get back to top speed.

If you can't get back to top speed, what's the point of doing this?

Bang bang bang.

The sound of spiked shoes behind me was very dense.

But it's quite far from Su Shen.

He knew there was only the sound of nails behind him.

The rest are nothing to fear.

78 to 80 meters!
This is the last-ditch effort to fully restore our speed!
If you can't do that, you won't be able to do anything in the entire game!
My front and back chains, the pre-processing techniques I did.

Let's connect them.

Reignite the inner power within me!!!

Bang! ! !
With so much groundwork laid.

When supporting yourself with your arms bent, the forearm fascia begins to be activated.

until now.

Extensive technical support.

That's why Su Shen let out that roar of anger in his heart.

Without these technologies as support, he wouldn't even have the right to roar.

After all, track and field is a winner-takes-all competition.

It's just so cruel.

So-called friendship and camaraderie are things that can only be judged after the game.

During the match.

Almost non-existent.

Until the very last front and back list chains.

A mutually pulling and balancing reaction has emerged.

Bang!
It's as if a wall has been broken down!
I didn't even have time to think about other feelings.

An intuitive feeling immediately rushed to my head.

Extreme speed!
Speed ​​is back!!!

good!!!!!!!!!!!!!!!!

Su Shen's speed has completely returned to its maximum!
The second rapid recovery has been successfully achieved!
What else is there to say?

The entire body began to exert its full force...

Achieve optimal state!
and.

Every step is precisely designed to serve the core goal of accelerating progress.

When landing and supporting the weight, the ankle rolls at its maximum speed, and the entire forefoot bears the force, from the outer side touching the ground to the extension of the foot, all in one smooth motion.

The support duration is much shorter than in previous races, and the speed of front chain buffer contraction and power switching reaches the millisecond level. It can steadily bear the ground reaction force and quickly convert it into forward power without any delay.

The posterior chain elasticity is fully stored and its resilience is maximized. The Achilles tendon rebound force reaches its peak. The gluteus maximus and the posterior thigh muscles work together to tighten but still maintain elasticity. The force is not stiff. The extension is driven by the combined tension of muscles and fascia, making the extension force more sustainable.

The core muscles remain absolutely stable, with the erector spinae and internal and external oblique muscles working together to keep the trunk upright without swaying left or right or rising and falling, thus becoming a solid carrier for force transmission.

The resultant force formed by the ground reaction force and the force exerted by the body.

It travels upwards along the lower limbs, core, and torso.

Then seamlessly connect to the upper limbs.

The whole body exerts its strength as a unified whole.

There is not the slightest disconnect.

As for the sidelines.

A group of European and American researchers had already stared wide-eyed.

"No...this is absolutely impossible!!!"

“Absolutely impossible!!!”

"You...you're ignoring kinematics?!"

Yes.

The first-ever extremely fast fall in human history, followed by a return to extremely fast speed.

Right now.

The bird's nest at this time and place.

It's happening now.