The Su God of the Reopening of the Sports Arena

Chapter 2422 The Most Obscure New Giant! It's Your Turn Again, Usain
Oslo.

Start-up phase.

Su Shen established an initial velocity advantage by "efficiently transmitting ground reaction force + driving force through the hip joint".

The swinging leg is actively driven by the hip joint, shifting from "passive backward swing" to "active forward pull".

The arm swing is coordinated with the angular momentum of the lower limbs.

This establishes a strong start-up advantage.

Secondly, in the acceleration phase, the step frequency is increased stepwise by "rapid SSC cycle + dynamic adjustment of rotational inertia".

These were all practical training exercises conducted in the previous two matches.

In this race, his plan was to break through from the middle of the race.

During the middle of the race, Suarez planned to maintain his peak cadence by using "high power output from the hip joint + angular momentum stability".

The core of biomechanics at this stage is "how to maintain hip joint drive efficiency and angular momentum stability at high speeds". It is necessary to focus on applying the principles of hip joint drive and angular momentum conservation, and avoid decreased cadence and energy loss by strengthening the explosive power of hip muscles and optimizing lower limb-upper limb coordination.

Biomechanical adaptation logic during the mid-run phase.

During the middle running phase, the body is in an upright posture with the torso at an angle of about 85°-90° to the ground. The swing speed of the lower limbs reaches its peak, with the thigh angular velocity at 11-12 rad/s. The hip muscles need to continuously output high power to maintain the swing speed.

If the hip joint's driving force is insufficient at this time, it will lead to a prolonged swing cycle.

If angular momentum is out of balance, the lower limbs and upper limbs will swing asynchronously, causing the body to sway from side to side and increasing energy loss.

Therefore, this stage requires maintaining swing speed through "high power output of the hip joint" and reducing energy waste through "angular momentum stabilization control" to ensure the continuous peak stride frequency.

So what Su Shen meant was—

High power output from the hip joint.

The iliopsoas and gluteus maximus muscles work together.

During the forward swing phase of the run, the iliopsoas muscle needs to contract with maximum power to drive the thigh forward, stabilizing the hip flexion angle at 70°-80°. At this angle, in Suarez's current state, the iliopsoas muscle has the longest lever arm and the greatest power output. At the same time, the gluteus maximus needs to quickly eccentrically contract and then concentrically contract during the swing leg recovery phase, outputting approximately 700-800W of power to quickly pull the thigh back, forming a rapid "forward swing-backward swing" cycle.

To achieve this synergy, it is necessary to strengthen the "rapid transition of hip flexors to hip extensors" during training. For example, by using "progressive overload hip flexion and extension" training, the time difference between the coordinated activation of the iliopsoas and gluteus maximus muscles after training is reduced from 0.03 seconds to 0.01 seconds, and the swing cycle is stabilized at 0.30-0.32 seconds. Biomechanical data shows that by doing so, the power output of the hip muscles in elite athletes can be maintained at more than 85% of the peak level during the middle run phase.

Ordinary athletes can only maintain 60%-70%.

This is the core reason why the former can maintain a high step frequency for a long time.

Gatling refused to believe it.

He immediately organized his own counterattack!
This year's performance is truly impressive!

The 30-meter mark is now the golden range for showcasing Gatling's "hip delivery technique".

He did not treat hip thrust as an isolated movement, but rather linked it with core control and the depth of the push-off, making each forward and backward swing of the hip an "amplifier of forward kinetic energy".

It retains the steady rhythm of running in the middle of the race, and transforms explosive power into a sustained stride length advantage through hip extension, breaking down the "famous" hip extension into perceptible technical details of each step.

Gatling gun delivers a hip strike!

Just as he entered the 30-meter mark, Gatlin began his hip extension with a "core traction" warm-up.

The muscles on both sides of the waist and abdomen exert force first. When the left side of the waist and abdomen contracts slightly, the left hip is "lightly pushed" forward. Although the range is small, about 5-8 centimeters, it accurately puts the left hip in the "forward extension force position".

When the right side of the waist and abdomen contracts in succession, the right hip moves forward in sync. The whole process is like "the core lifting the hips to move". There is no deliberate hip twisting, only a natural extension following the rhythm of the core.

At this moment, the hip thrust and the push-off form a "preliminary linkage": as the left hip thrusts forward, the left leg pushes off the ground and extends backward. The moment the foot leaves the ground, the left hip uses the reaction force of the push-off to "bring" forward another half distance, subtly increasing the stride length by 3-5 centimeters.

When the right hip moves forward, the right leg lands to cushion the impact. The force of the hip moving forward and the reaction force of the foot hitting the ground create a "counter-impact buffer," avoiding rhythm disruption caused by hard impact.

The arm swing is also coordinated with the hip thrust adjustment.

When the left hip moves forward, the left arm swings back naturally and the right arm extends forward, as if "using the arm swing to balance the force generated by the hip", so as not to cause the torso to shift due to the hip movement.

By the time he reached 35 meters, his hip extension had not yet reached its peak, but he had already found the "rhythm point of hip power" through core traction.

The stride length gradually increased, without any body swaying caused by hip thrust.

Gatlin delivers a famous painting to the hip.

Well-deserved name.

At high speeds, the high angular velocity swing of the lower limbs generates a large angular momentum. If this momentum cannot be effectively counteracted, it will cause the body to sway from side to side, increasing energy loss.

The angular momentum stability requirements during the mid-race phase are mainly reflected in two aspects:

First, the symmetrical cancellation of the angular momentum of the upper and lower limbs means that the angular momentum generated by the swinging of the upper limbs must be equal in magnitude and opposite in direction to the angular momentum generated by the swinging of the lower limbs, so as to keep the overall angular momentum of the body close to zero.

Secondly, the neutral position of the trunk is stable, avoiding angular momentum imbalance caused by trunk tilting.

Motion capture data shows that when the angular momentum of the upper and lower limbs is asymmetrical, the athlete's energy loss will increase by 15%-20%, and the speed decay rate will rise from 2% to 5%.

For every 1° tilt of the torso to one side, the swing trajectory of the lower limbs will shift by 2-3 cm.

An increase in rotational inertia of 5%-7% and a lengthening of oscillation time of 0.01-0.02 seconds further exacerbate the decline in stride frequency.

Therefore, it can be said that the more stable the body's angular momentum is.

For Su Shen's improvement, it's a running race.

The more advantageous it is!

To achieve this, the moment of inertia must be precisely controlled.

The more precise, the better.

This is because moment of inertia is negatively correlated with angular velocity.

Under the condition of constant angular momentum.

Therefore, precise control of rotational inertia is key to maintaining high angular velocity swing of the lower limbs.

During the middle of the race, the angular velocity of the thigh approaches the "lower leg forward swing" threshold of 12 rad/s. If the knee joint extends too early, i.e. "lower leg forward swing", it will cause a sudden increase in the rotational inertia of the lower limb.

The angular velocity dropped sharply.

This, in turn, prolongs the oscillation period.

Biomechanical research at the Su Shen Laboratory shows that the lower limb rotational inertia is minimal when the knee joint flexion angle is stable at 75°-85° and 45°-55°, which are the backward and forward swings.

At the same time, keeping the foot continuously dorsiflexed and the toes pointed towards the calf can bring the weight of the foot closer to the calf, further reducing the moment of inertia by 8%-10%.

If the moment of inertia is not properly controlled.

This will lead to an increase in the coefficient of variation of the oscillation period.

It rose from 1.5% to 3%.

even more.

That
Step frequency stability.

Significant decrease.

That's normal. So, to do this well, we naturally need to showcase the new technology and movement system that Su Shen has mastered.

Use the front swing to reset.

To do this.

The concept of forward swing recovery technique refers to the complete technical process of the swing leg from "swinging forward to the highest point" to "swinging backward to the lowest point" during the mid-running phase of sprinting.

Its core is to achieve a seamless connection between "efficient forward swing" and "rapid backward swing". Essentially, it is a technical system that integrates the coordinated force exertion of the hip muscles, symmetrical swing of the upper and lower limbs, and rotational inertia control.

Rather than a single "backswing reset" action.

From a technical perspective, the forward swing reset technology is a key link connecting the "forward swing acceleration" and "backward swing extension" during the run, directly determining the length of the swing cycle and the energy utilization efficiency.

If the forward swing recovery technique is not perfect, it will lead to insufficient forward swing force and slow backward swing recovery, which will disrupt the technical rhythm of running, causing a decrease in stride frequency and speed.

Su Shen adopted a rapid switching system for the hip flexor-hip extensor muscle groups.

Specifically, during the forward swing phase of the leg, the iliopsoas muscle contracts with maximum power to drive the thigh forward. When the thigh swings forward to a hip flexion angle of 70°-80°, which is the angle with the longest lever arm of the iliopsoas muscle, the iliopsoas muscle quickly stops contracting, and the gluteus maximus immediately changes from eccentric contraction to concentric contraction.

Quickly pull your thigh back.

Complete the "forward swing-backward swing" reset process.

An upper and lower limb angular momentum coupling system is adopted.

The forward swing recovery technique does not only focus on lower limb movements, but also achieves the coupling cancellation of angular momentum between the upper and lower limbs by constructing a symmetrical swing relationship of "lower limb forward swing - upper limb backward swing".

During the implementation of the technique, the upper limb swing should follow the principle of "the same side lower limb swings backward when swinging forward, and the same side upper limb swings forward when swinging backward," and the arm bending angle should be kept at 90° to minimize the rotational inertia of the upper limb.

The swing amplitude should be controlled to "swing forward to the height of the chin and swing backward to 30cm behind the waist" to ensure that the upper limb swing frequency is completely synchronized with the lower limb gait frequency.

The purpose of Su Shen's work on this coupled system is:
The clockwise angular momentum generated by the forward swing of the lower limbs can be offset by the counterclockwise angular momentum generated by the backward swing of the upper limbs on the same side, making the overall angular momentum of the body close to zero and avoiding swaying from side to side.

Sports biomechanics experiments show that athletes using the forward swing reset technique can achieve a coupling coefficient of angular momentum between their upper and lower limbs, with the ratio of actual coupled angular momentum to ideal coupled angular momentum reaching over 0.95.

Athletes who did not use this technology had a coupling coefficient of only 0.7-0.8.

Energy loss increases by 15%-20%.

After these two aspects are done.

Su Shen's Precision Control System for Rotational Inertia...

It has also begun to be demonstrated in actual combat.

The forward swing recovery technique minimizes the rotational inertia of the lower limbs through precise control of the knee joint and foot posture. During the forward swing phase of the swing leg, the knee flexion angle is stabilized at 75°-85° by moderate tension control of the quadriceps and hamstring muscles, avoiding a sudden increase in rotational inertia caused by premature knee extension.

During the backswing phase of the swing leg, the knee flexion angle is adjusted to 45°-55°, while the foot remains in continuous dorsiflexion.

By bringing the mass of the foot closer to the lower leg, the moment of inertia is further reduced.

During training, Su Shen used sports equipment to detect that athletes using the forward swing reset technique could maintain a stable activation amplitude of 60%-70% for their knee joint stabilizing muscles, reduce the incidence of "lower leg forward swing" by 90%, and decrease the coefficient of variation of the swing cycle from 3% to 1.5%.

This can significantly improve step frequency stability.

Gatling's hip thrust is certainly impressive.

For example, 35-40 meters.

He uses "half-force" from his hips to push off the ground and increase the range of motion.

After 35 meters, Gatlin's hip extension entered the "half-power" phase, with his core exerting greater traction on his hips.

The contraction amplitude of the left waist and abdomen increased to 1.5 times that of before, and the forward extension amplitude of the left hip increased to 10-12 cm.

Furthermore, the speed of hip extension is accelerated, no longer a "light extension", but with a "forward thrusting" force.

When engaging the right side of the waist and abdomen, the right hip moves forward simultaneously with increased force, and the trajectory of the hip swinging back and forth becomes clearer, like "a pendulum swinging back and forth rhythmically."

This is a complete "meshing" of the hip thrust and the push-off.

When the left leg pushes off the ground, the hip joint first "extends backward to store power". After the calf muscles tighten, the hip "springs" forward. The reaction force of pushing off the ground is transmitted through the hip joint, increasing the hip extension by 2-3 centimeters.

When the right leg pushes off the ground, the hip first "slightly retracts" backward, like drawing a bow to store power, and then uses the force of pushing off the ground to propel it forward. The whole process does not have a time difference of "pushing off first and then pushing off", but rather "the push-off and hip thrust are simultaneous".

At this point, the stride length has continued to increase steadily by 8-10 centimeters compared to when it was 30 meters, while still maintaining a stable stride frequency.

While others may experience a contradiction of "increased stride length and decreased stride frequency" when shifting their hips, he relies on precise core control of the hips to ensure that hip shifting only serves to "optimize stride length" without disrupting the original rhythm.

This is the advantage of Gatling hip delivery.

It is also one of the hallmarks of becoming a world-famous painting.

Bang bang bang bang bang.

As the speed increases, the Gatling gun's arm swing amplitude also expands with the hip extension. When swinging forward, the arm can be raised above the waist, and when swinging backward, the scapula retracts slightly, as if "using the arm swing to 'transfer force' to the hip extension." Each arm swing can assist the hip to move forward more smoothly.

By the time he reached 40 meters, his hip-sending technique was already showing the beginnings of his legendary performance.

The hips swing back and forth with a sense of "stability and power".

The advantage of stride length began to be visible to the naked eye, and the gap in position with the players next to him quietly widened.

They have already firmly secured second place.

Even Zhao Haohuan has fallen far behind.

of course.

This is also because Lao Zhao is in the first game now.

They haven't recovered yet.

Still getting used to it.

Otherwise, the Gatling gun wouldn't have been able to suppress so many enemies so easily.

However, Su Shen's use of the forward swing reset technique is related to his biomechanical needs during the run.

I started using forward swing reduction techniques to improve my hip joint's sustained high power output.

Yes.

He's reached his level.

The hip joint output is already very high; it is extremely difficult to go any further.

can.

This was done by Su Shen.

It's about taking things to the next level.

What he has to do is...

A tribute to a world-famous painting. Gatling delivers a hip thrust.

Suppress it fiercely.

The kind of suppression that shows absolutely no mercy.

When they were on Ersha Island, Su Shen had already told Randy—

Once he reached his level...

We still want to make further breakthroughs in hip joint output.

This step must be done well.

This refers to the mid-flight pre-swing reset technology system.

From start-up to acceleration to mid-journey.

Su Shen has come all the way here.

What needs to be done in each competition is exceptionally clear.

Take this match, for example.

The Battle of Oslo.

What he needs to do is—

Implement it in real-world practice.

Methods to further increase hip joint output.

That is.

Utilizing the front swing reset technology system.

This pushes the hip joint to its already maximum capacity.

Break it.

To surpass the limits.

The forward swing reset technique reconstructs muscle force patterns.

From "passive compensation" to "active driving".

Bang bang bang bang bang.

Inefficient muscle activation patterns are the primary cause of hip joint power output reaching its limit. Traditional running methods suffer from three major problems: delayed activation of hip flexor muscles, excessive contraction of antagonist muscles, and disordered timing of synergist muscles.

This is also an international problem.

The forward swing reset technique precisely controls the muscle activation logic and contraction characteristics, transforming the muscle's working state from "passive compensation" to "active drive".

It directly improves the power output efficiency of the hip joint.

Bang bang bang bang bang.

Su Shen precisely activates the core hip flexor muscles, releasing the muscle contraction potential.

As the core power source of the hip flexors, the iliopsoas muscle's contraction efficiency directly determines the magnitude of the forward swing force of the hip joint. In traditional running, because the forward swing phase of the swing leg relies excessively on the knee joint, the activation timing of the iliopsoas muscle lags behind the extension of the supporting leg by 50-80ms, and its activation intensity is only 65%-70% of the maximum voluntary contraction.

This delayed activation prevents the iliopsoas muscle from working within the optimal range of muscle length-tension relationship.

When the supporting leg leaves the ground, the iliopsoas muscle is in a state of overstretch, with a length of 1.4-1.5 times its resting length, while the optimal length for generating maximum contractile force is 1.2-1.3 times its resting length.

Overstretching can reduce the efficiency of muscle cross-bridge bonding and decrease muscle force output by 20%-25%.

The forward swing reset technique aims to completely change the activation state of the iliopsoas muscle through "action timing optimization" and "neural control guidance".

In terms of the timing of the movement, this technique advances the activation point of the iliopsoas muscle to the end of the supporting leg extension.

That is, 30-40ms before the supporting leg leaves the ground.

此时髂腰肌长度恰好处于1.2-1.3倍静息长度的最优区间，横桥结合数量比传统跑法增加30%以上，收缩速度提升15%-18%。

From a neurocontrol perspective, in technical training, athletes are guided to actively contract the iliopsoas muscle through "visual feedback + electromyographic biofeedback", which increases the integrated electromyographic value of this muscle from 0.35mV·s in traditional running to 0.48mV·s!

Activation strength increased by 37%!

Experimental data shows that after adopting this technology, the hip flexion angular velocity of athletes increased from 350°/s in the traditional running method to 420°/s.

The forward swing force is significantly enhanced.

It can directly drive the power output of the hip joint...

Break through traditional limits!

So even if it's a Gatling gun at 40-45 meters.

The hip is delivered with a "full burst" of power, while core lock-up ensures continuity.

At the 40-meter mark, Gatlin's hip extension enters its peak "full-power" phase, with his core completely becoming the "center of hip power generation."

The left side of the waist and abdomen works together with the left side of the gluteal muscles to push the left hip forward by 15-18 centimeters, and the hip always remains "horizontally extended" during the hip extension, without any upward or downward deviation.

The right waist and abdomen move in sync with the right gluteal muscles, and the right hip moves forward in a horizontal trajectory, making the entire hip appear as if it is "sliding back and forth on a fixed horizontal track".

The force is precisely directed "forward," with no energy wasted.

Still...

Can't stand it.

Even Gatling's hip thrust, ground push, and core work form a "three-in-one" closed loop of power generation.

When the left leg pushes off the ground, the core twists to the left → the hips store power backward → the reaction force from pushing off the ground propels the hips forward. These three movements are completed within 0.5 seconds, without any gaps.

When the right leg pushes off the ground, the core twists to the right → the hip retracts → the force of pushing off the ground propels the hip forward, all in one smooth motion.

At this point, the stride length reaches its peak during the run, yet the smooth transition of "landing and pushing off" is still maintained.

The moment the hips are pushed forward is precisely the instant the feet land. The inertia of the hip thrust is directly converted into the preparatory force for pushing off the ground, without any buffering or pause.

The coordination between arm swing and hip thrust is also maximized.

When the left hip moves forward, the left arm swings back to its maximum range and the right arm extends forward to its foremost point; when the right hip moves forward, the right arm swings back and the left arm extends forward, as if "the arm swing and the hip are making mirror images", which completely balances the body torsional force brought about by the hip movement.

By the 45-meter mark, his signature hip thrust was fully formed, with each step's hip swing carrying a "crushing" rhythm, his stride length advantage continuing to expand, and his figure exuding a "steady and fast" oppressive aura on the track.

The stride length that others need to catch up with through explosive power.

He can easily achieve this by simply shifting his hips.

all.

These are all hip-thrusting scenarios that perfectly match Gatlin's ideas.

But still.

It was strongly suppressed.

fundamental.

It's impossible to catch up.

In other words.

Su Shen is here.

Take the world-famous painting of Gatling.

They were completely trampled underfoot.

completely.

It surpassed Gatling's hip thrust.

Gatling's hip-sending technique was extremely famous in the previous life, at this point in time.

It's a pity we've come this far.

Debut.

It's simply backward.

It means being shot down.

This is not because the Gatling gun is weak.

Exactly because.

Su Shen himself.

The running method used during the journey.

It is completely ahead of its time.

It completely overwhelms the cognitive system that Gatling currently possesses.

Under a major version generation gap.

Even Gatling's hip thrusts are a beautiful sight.

Today, I can only obediently play a supporting role.

To become a foil.

Because of the Easterner in front.

It was as if magic had been used.

Or it could be sorcery.

We can't catch up with them here.

It will probably get even more difficult from here on out.

really……

final result.

Su Shen 9.58.

The water was released and the hole was broken.

The wind speed at the scene was tailwind.

1.9 meters per second.

Under conditions of near-full wind.

Su Shen.

He broke the 9.60-second barrier with ease.

no doubt.

What follows is a classic scene.

"Yosem".

"How about it?"

"again."

"It's your turn."

As for this race, with a great wind, in excellent form, and chasing Suarez, he achieved his first sub-9.70 time.

A Gatling gun with a speed of 9.69.

This was the shot that propelled him to the top.

result.

Nobody paid any attention to it.

Everyone was captivated by the dramatic back-and-forth between Suarez and Bolt.

They didn't spare a single second of attention.

For the newly emerging giants.

Gatling gun.

Such a person should feel fortunate and cheer when looking at their achievements.

After all, it's truly remarkable that someone of his age can still reach the pinnacle of their career.

however.

He became the seventh giant.

There wasn't a single cheer or applause from the audience.

This is true.

Wang Xiaoer's New Year.

One year is worse than one year.

It's said to be the most miserable tournament for the giants to advance.

That's not an exaggeration.