The Su God of the Reopening of the Sports Arena

Chapter 2256 Lightning Dialogue! The Similarities and Differences of Technology

Bolt actually also exerted his strength.

Acceleration zone.

Showed his changes.

This left Powell dumbfounded.

No.

You two brothers.

I think we have discussed it.

Let’s play this together!

Who can stand this!

I really can't stand it.

Even Lao Bao can’t do it.

The rest.

Even worse.

Bang bang bang bang bang.

Although Bolt's dorsiflexion angle is small, he activates the tibialis anterior muscle in advance to ensure that the height of his toes is 15cm, avoiding rubbing the ground during acceleration.

This is called - ankle pre-swing!

The mid-run begins.

At this time, the first and second place have already shown the core situation of the game.

There is no doubt that Su Shen is in No. 1 place.

The second place has become Usain Bolt.

That arrives so fast?

Su Shen was also a little surprised.

This is the time when Bolt came up.

This time point is faster than I imagined.

The reason is.

Bolt definitely made some breakthroughs in the acceleration zone.

There are technical changes.

Okay.

You are worthy of it.

It really can't be described by common sense.

Did God give us the perfect specimen for sprinting?

Oh well.

Then let me see me, the reopener bestowed by the Eastern Jade Emperor.

Can I fight with you, the son of God!
Bolt continued to perform at this time.

During running, the three joints of the lower limbs, hip-knee-ankle, generate torque and distribute power precisely.

Achieve efficient sports performance.

Core changes while running - core joint combination of running!

Torque-power synergy of the three-joint chain of the lower limb!
It doesn’t matter if Bolt doesn’t understand, as long as Mills understands.

Mills believes that the power of running comes from the torque coupling and power relay of the "hip-knee-ankle" three-joint chain, and the torque direction and power output of each joint change through different stages.

Ultimately, a closed loop of "energy absorption-storage-release" is formed.

Then he will run like Bolt on the way.

Allow for a buffer period for landing.

This is the key to torque absorption and power conversion.

Thirty meters later, Bolt began to transition into mid-distance running.

at this time.

End of startup and acceleration.

It's his time.

And just the torque adjustment.

It also boosted his confidence.

I am indeed a genius.

these things.

I don't understand.

But that doesn’t mean I can’t do it.

I have to give myself a thumbs up!

With this mentality.

Bolt's confidence soared as he ran.

At the moment the ankle joint touches the ground, the reaction force of the ground triggers the ankle joint to plantar flex.

The triceps surae eccentrically contracts to produce dorsiflexion torque opposition. During this phase, the ankle joint mainly absorbs power.

The impact force is converted into elastic potential energy and stored in the Achilles tendon and calf fascia.

If the dorsiflexion torque is insufficient, excess energy will be conducted upward.

Thirty-five meters.

The knee joint tends to flex under the reaction force of the ground.

The quadriceps and hamstrings work together eccentrically.

Creates an extension moment that resists flexion.

During this stage, the knee joint absorbs power and regulates flexion speed to avoid excessive impact. Its power output characteristics directly affect Bolt's lower limb rigidity and injury risk.

Forty meters.

When Bolt's hip joint is slightly flexed, the gluteus maximus and hamstring muscles eccentrically contract to produce an extension torque.

Resist the forward lean of the torso.

The hip joint cushions the impact through negative power output.

At the same time, the iliopsoas muscle maintains moderate tension to reserve energy.

Bang bang bang bang bang.

The entire ten-meter coordination mechanism.

The three joints absorb torque in the order of "ankle-knee-hip".

A decreasing buffer gradient is formed.

The overall power is negative.

Effectively reduce the impact of ground reaction force on bones.

Bolt's sense of technology is unfamiliar even though the term is unfamiliar.

Can……

Su Shen is not a vegetarian either.

Hard fight is not weak at all.

Utilize the three-dimensional characteristics of ground reaction force and joint response mechanisms during running.

Thirty meters looking up.

During the landing cushioning period, force absorption and energy conversion.

Su Shen used three-thirds of his strength to solve the problem.

Vertical direction: At the moment of contact with the ground, the vertical force component increases sharply. The ankle joint generates dorsiflexion moment through eccentric contraction of the triceps surae, the quadriceps femoris and hamstrings of the knee joint cooperate with eccentric contraction to resist flexion, and the gluteus maximus and hamstrings of the hip joint eccentrically contract to resist forward tilt of the trunk.

The cushioning gradient of "ankle-knee-hip" converts vertical impact force into elastic potential energy and stores it in the lower limbs.

Thirty-five meters.

Front-to-back direction - the front-to-back force makes Su Shen tend to fall forward, and the ankle dorsiflexion moment, knee extension moment and hip extension moment act together.

This can slow down the body's forward momentum, prevent excessive forward leaning, and maintain balance.

Forty meters.

Then comes the internal and external directions - the internal and external forces can easily cause torsion of the lower limbs, and the muscles around the knee joint, such as the vastus medialis, vastus lateralis and hip abductor muscles, work together to exert force.

Maintain the stability of the lower limbs in the frontal plane and prevent joint varus or valgus.

Enhanced stability.

It's like fighting Bolt.

Bolt doesn't waste words either.

Continue to strengthen your technical sense.

"here we go!"

"Let's fight!"

This is the first feeling of countless professionals when they see this place.

This is also the highlight of the game that countless audiences buy tickets to watch.

Bolt continued to push forward.

During the landing cushioning period, the ankle joint is the first joint to contact the ground and undertakes the primary cushioning task.

The moment he touches the ground, the reaction force of the ground triggers the ankle joint to plantar flexion, and the triceps surae, including the gastrocnemius and soleus muscles, perform eccentric contraction to generate dorsiflexion moment to resist plantar flexion.

During this process, the ankle joint mainly absorbs power, and the power is expressed as a negative value, which means that the muscles are doing negative work, converting the impact force into elastic potential energy and storing it in the Achilles tendon and calf fascia.

From a biomechanical perspective, the magnitude and direction of the ankle joint torque directly affects the efficiency of the transmission and absorption of ground reaction force. If the dorsiflexion torque is insufficient, excess energy will be transmitted upward, increasing the burden on the knee and hip joints and potentially leading to an increased risk of lower limb injury.

During the landing buffer period, the dorsiflexion angle of the ankle joint of excellent sprinters is usually between 10° and 15°, and the dorsiflexion torque can reach 50-70 N·m. This reasonable angle and torque control helps to efficiently absorb impact energy.

Bolt.

They are all beginning to approach the upper limit of this data.

Then the power output characteristics of the knee joint during the landing buffer period also show a negative value, and its main function is to absorb and regulate energy.

The flexion angle and extension torque of the knee joint have an important impact on the risk of lower limb injury.

When the knee flexion angle exceeds 130 degrees, the load on the quadriceps and hamstrings increases significantly, which may cause muscle strain or wear of the joint cartilage, making your movement unstable.

During the landing buffer period, the flexion angle of the knee joint of excellent sprinters is generally controlled between 120° and 130°, and the extension torque can reach 100-120 N·m.

Bolt is also beginning to approach his ceiling.

Bolt used to be in these places.

They are all very rough.

But in order to keep improving.

Now here, he needs to get himself closer to the ceiling of those numbers.

Of course you know.

He can do it too.

The main function of the hip joint at this stage is also to absorb energy.

Reduce the impact of ground reaction force on Bolt's body.

The magnitude and direction of the hip extension torque affect the control of the body's center of gravity and the preparation for subsequent extension.

Insufficient hip extension torque will cause the body's center of gravity to lean forward excessively, increasing the difficulty of subsequent extension and reducing running efficiency.

During the landing buffer period, the hip extension torque of excellent sprinters is usually between 80-100 N·m, and the hip flexion angle is about 15°-20°.

Bolt used to be in the upper middle position.

Some are even the median.

but now.

Also starting to approach the upper limit.

Su Shen was also not idle.

What Bolt is doing, he is doing too.

The principle of using three-dimensional ground reaction force to regulate the cushioning period during landing.

First, during the landing buffer period, the vertical component of the ground reaction force is the largest component, which produces an upward impact force on the human body. In order to effectively absorb this impact force, the human body lowers the body's center of gravity through flexion of the lower limb joints and eccentric contraction of the muscles, prolonging the time of force action, thereby reducing the peak impact force.

Specifically, ankle dorsiflexion, knee flexion and hip flexion form a "flexible buffer chain", which absorbs vertical impact force through eccentric muscle contraction and converts kinetic energy into elastic potential energy and stores it in tendons and fascia.

For excellent sprinters, the peak vertical ground reaction force at the moment of landing can reach 2-3 times their body weight, but through an effective buffering mechanism, the peak impact force can be reduced to 1.5-2 times their body weight.

Su Shen.

He also relied on the foundation he had laid over the years and his control over technology and body in two lifetimes.

It is also beginning to approach the upper limit of this data.

Then use force control and speed regulation in the front and back dimensions.

The forward and backward components of the ground reaction force affect the forward and backward movement of Su Shen's body.

During the landing buffer period, the front and rear forces make the body tend to lean forward. In order to slow down the body's forward speed and avoid excessive forward leaning, the ankle, knee and hip joints work together to generate backward resistance.

At the same time, Su Shen makes his ankle dorsiflexor muscles, such as the tibialis anterior, knee extensors, quadriceps femoris and hip extensor gluteus maximus contract together to form backward resistance and control the forward speed of the body.

During this process, the direction and magnitude of the torque of each joint need to be precisely coordinated to ensure the stability of the body's center of gravity and the reasonable adjustment of speed.

The next step is to balance the forces in the internal and external dimensions and to stabilize the posture.

Su Shen knew that the internal and external components of the ground reaction force could easily cause twisting of the lower limbs and destroy the body's balance in the frontal plane.

Then during the landing buffer period, the internal and external muscles of the knee joint, such as the vastus medialis, vastus lateralis and hip abductor muscles, work together.

This maintains the stability of the lower limbs in the coronal plane and prevents the joints from being varus or valgus.

Because the core muscles also play an important role in this process, they generate anti-rotational torque through continuous isometric contraction, limit the lateral swing of the trunk, and ensure the stability of the body posture.

Moreover, weak core muscles can cause pelvic rotation, causing the ground reaction force to deviate from the direction of forward movement, increasing energy loss and reducing running efficiency.

Su Shen takes care of these details.

It is to make myself better in the technical aspect.

Details win.

At their level, it is already difficult for them to make breakthrough progress with just the so-called big system.

We should also start paying attention to every little aspect.

The display of technology is just the foundation.

How can we make this technology better?
Reach the upper limit.

It has become the most important thing to consider right now.

And the eagle-eyed will surely notice it.

In the end, various techniques actually overlap or have some commonality.

Just like what Suarez and Bolt are doing now.

In fact, one of the foundations is - for a common mechanical goal.

For example, three-joint torque technology and three-dimensional ground reaction force control have a common mechanical goal during the landing buffer period, which is to effectively absorb the ground reaction force.

Reduce the damage of impact to the body.

At the same time, store as much energy as possible to prepare for the subsequent push-off movement.

Both emphasize achieving this goal through the coordinated movement of the lower limb joints and the rational use of muscles.

So you'll find a lot of intersections.

Both will proceed mutually.

It's just a question of how much.

Active and passive issues.

The question is which one is the main one.

It's like front side and back side technique.

It doesn't mean that there is only the front side and no back side.

If that's the case, there's no way to run.

It just depends on which side you put more emphasis on.

But in fact, you occupy both points in motion.

This is active and passive.

That's how much.

It depends on which one is the main one.

The second is reliance on similar muscle synergy mechanisms.

Both the three-joint torque technology and the three-dimensional ground reaction force control rely on the coordinated work of the lower limb muscles.

During the landing buffer period, major muscle groups such as the calf triceps, quadriceps, hamstrings, and gluteus maximus need to perform eccentric contraction to generate corresponding torque or control force.

In addition, the core muscles also play a key role in maintaining the stability of body posture, and both attach importance to the stabilizing role of the core muscles.

Then...

They all focus on the absorption and transformation of energy.

Both focus on the absorption and transformation of energy during the landing cushioning period.

The three-joint torque technology absorbs energy through the negative power output of each joint, converting the impact force into elastic potential energy and storing it in the muscles and fascia.

Three-dimensional ground reaction force control converts kinetic energy into elastic potential energy through vertical force absorption and energy conversion.

Both emphasize the importance of energy storage to provide an energy basis for subsequent stretching.

and so.

In the eyes of many people who don't know everything, it seems that there are subtle overlaps between the two people in some aspects, or even that they look alike.

This is not actually an illusion.

That's the truth.

but.

Since they are two different main technologies.

There are different points.

For example, the analysis perspective and focus are different.

The three-joint torque technology takes the hip joint, knee joint and ankle joint as the research objects, focusing on analyzing the torque generation and power conversion process of each joint during the landing buffer period, and revealing the mechanical mechanism of the landing buffer period from the perspective of joint dynamics.

The three-dimensional ground reaction force control takes the three dimensions of ground reaction force as the analysis perspective, focusing on how the human body controls and utilizes these component forces through its own movement and muscle force, and focusing more on the overall mechanical balance and rational use of force.

For example, in terms of research methods and data collection, three-joint torque technology usually uses a motion capture system combined with surface electromyography technology to measure joint angles, angular velocities, and muscle electrical signals, and then calculate joint torque and power.

The three-dimensional ground reaction force control mainly relies on the three-dimensional force platform, which directly measures the magnitude and direction of the ground reaction force and analyzes it in combination with kinematic data.

The data collection and analysis methods of the two have different focuses, reflecting different research ideas and technical means.

For example, the core strategy of optimization.

Based on different analytical perspectives and research methods, there are also differences in optimization strategies between the two.

The optimization strategy of three-joint torque technology mainly focuses on improving the torque generation capacity and power conversion efficiency of each joint, such as enhancing the strength of related muscle groups through targeted strength training and improving the coordinated force pattern of muscles through neuromuscular training.

The optimization strategy for three-dimensional ground reaction force regulation focuses more on the comprehensive control of the three dimensions of ground reaction force, such as improving the body's stability in the coronal plane through balance training, and optimizing the absorption and conversion of vertical and anterior-posterior forces through special technical training.

……

You have to understand these points.

Only then can you understand why two people’s practical techniques are both similar and different.

Only then can we know in which direction the practical skills of two people should be stimulated and adjusted in the next step.

Just like now.

Bolt began to respond to the pattern change in the time series.

三关节力矩技术遵循“踝-膝-髋”的顺序性激活特征，踝关节率先响应地面冲击，触地后0-30ms，随后膝关节30-60ms、髋关节60-90ms依次参与缓冲。

This stepped activation pattern creates a decreasing gradient in torque absorption, avoiding overloading of a single joint.

This is what Bolt wants now.

On Su Shen's side, the three-dimensional ground reaction force control emphasizes the synchronous response of the three-dimensional forces.

The vertical force component, the front-back force component, and the internal-external force component act simultaneously at the moment of contact with the ground, requiring the neuromuscular system to perform three-dimensional vector integration in an extremely short period of time, and its response speed and coordination requirements are higher.

Bolt adjusted again.

The conduction path of spatial force lines.

The three-joint torque technology uses force lines to transmit and joints as nodes, presenting a longitudinal series mode.

The ground reaction force is transmitted from the ankle joint along the calf-knee joint-thigh to the hip joint, and the torque of each joint is gradually attenuated through the muscle-skeletal lever system.

Forming a level by level conduction.

Su Shen's side uses three-dimensional ground reaction force control, using force lines to present a three-dimensional network transmission.

The space force line conduction adopts——

The vertical force component is transmitted longitudinally through the joint chain of the lower limb.

The front and rear forces need to be buffered through the coordinated adjustment of ankle dorsiflexion, knee flexion and extension, and hip extension.

The internal and external components of force rely on the lateral control of the internal and external muscles of the knee joint and the core anti-rotation muscles.

Involves spatial coordination of more muscle groups and joints.

As the speed increases, Bolt's neural signal driving mode relies more and more on spinal reflexes and local neural regulation.

At the moment of contact, muscle stretch reflexes, such as the ankle reflex of the triceps surae, are rapidly activated, generating an initial torque resistance.

The cerebral cortex then responds based on the joint angles.

Such as knee flexion angle.

Dynamic adjustment is a mixed control of "bottom-up" and "top-down".

Su Shen was facing his own increasingly faster speed.

His approach is.

Emphasizes the global integration of the central nervous system.

The vestibular system senses changes in body posture, and the visual system predicts ground contact points, combined with mechanical signals from plantar pressure receptors.

The cerebral cortex completes three-dimensional force vector calculations within 0.1 seconds, directing multiple muscle groups to contract coordinatedly.

It is a precise regulation that belongs to the “top-level decision-making”.

Of course, the most important thing is the direct muscle action.

Bolt continued to increase his speed.

The timing of muscle activation begins to adjust.

Muscle activation follows a clear antagonist-agonist synergistic pattern.

For example, now I am running the second ten meters on the way.

During ankle dorsiflexion, the triceps surae antagonists eccentrically contract and the tibialis anterior muscles are activated in concert.

When the knee is flexed, the quadriceps and hamstrings form a "braking-stabilizing" combination.

When facing this problem, Su Shen chose muscle activation and focused more on the coordination of functional modules.

The core muscles, transverse abdominal muscle, multifidus muscle and lower limb stabilizer muscles vastus medialis and tibialis posterior are activated synchronously at the moment of landing.

Forming a "trunk-lower limb" stabilization unit, it prioritizes the balanced transmission of three-dimensional forces.

The two of them formed a terrifying speed.

Start to continue to charge forward.

At this point it doesn’t matter who else is on the stage.

At least it doesn't matter to the two of them.

They have all shown their true abilities.

Firepower confrontation.

Head-on confrontation.

This one.

No one wants to lose.

Everyone wants it.

Take down the opponent.

For this reason.

Only one can survive.

Sort of.

"The fight continues until death."