The Su God of the Reopening of the Sports Arena

Chapter 2264 Mills and Bolt jointly invite Su Shen to a duel

Mills looked at Bolt.

I feel very guilty inside.

He began to review the game frantically.

Or maybe he has never reviewed something so crazily in his life.

Because Bolt did nothing wrong in this game.

This time it was his own fault.

He didn't expect anything beyond the competition. Bolt was only responsible for the competition.

So you should be responsible for things outside of the game.

Non-linear characteristics of dose-response curves!
This seems to be that guy's thesis.

The training effect follows an inverted U-shaped curve, that is, moderate load promotes functional improvement, while excessive load leads to performance decline.

Athletes who run more than 120 km per week have a 80 times higher risk of injury than the 2.8 km group.

This nonlinear relationship stems from the limited adaptability of the body - when the training intensity and frequency exceed the threshold, the recovery process cannot completely repair the damage, and fatigue will continue to accumulate.

It may even affect the functional properties of the body.

Bolt's performance is a typical example.

Specific compensation of movement pattern!
Mills knew this. This theory was proposed by America. The excessive use of specific muscle groups and joints in track and field events will lead to compensatory loads in non-dominant parts.

The strong posterior muscles of the lower limbs in sprinters can increase the anterior pelvic tilt, thereby increasing the pressure on the lumbar spine.

In throwing events, asymmetry of rotation often leads to scoliosis.

This compensatory mechanism can maintain athletic performance in the short term, but will cause structural damage in the long term.

Bolt's body after this race.

Also need to test carefully.

Another very important point is that he believes Bolt's recovery was not good enough.

If the recovery is done well enough, even the consecutive outbursts before this game should not be a problem.

Bolt has enormous physical potential, and on this day he was absolutely convinced.

So it’s still my own fault.

Modern recovery techniques, such as ice baths, compression garments, and hyperbaric oxygen chambers, can speed up short-term recovery.

Especially the liquid nitrogen treatment room launched by their Su Shen system.

It is said that the Mvp club has already done it.

Looking at Powell's current condition, it is possible.

Before, he thought he could win without it.

But now it seems that we have to convince those old guys above.

It would be a waste if such a good thing were not used.

Mills wasn't so tough before, because he thought Bolt could win and that his tactics were enough. But now that he can't win...

Now that I've lost...

Mills is not going to be stubborn.

He was never like this.

Flexibility has always been the foundation of his life.

Moreover, even with such technology, there are various drawbacks that require them to be used in combination and cross-wise.

For example, although cold therapy can reduce muscle inflammation, it will inhibit satellite cell activity and delay long-term repair.

However, over-reliance on passive recovery methods such as massage may weaken the body's own recovery ability.

Additionally, psychological stress and lack of sleep can further inhibit the recovery process, creating a vicious cycle.

These are all things to pay attention to.

And that guy also said in his paper——

There are significant individual differences in athletes' injury risk, which is closely related to genetic factors.

It seems to be something called...Specific polymorphisms in the COL1A1 gene affect collagen synthesis.

Athletes who carry the risk allele have a 40% increased risk of Achilles tendon rupture.

IL-1 gene variation is positively correlated with the risk of osteoarthritis.

In addition, mitochondrial DNA mutations may lead to energy metabolism disorders, making some athletes more susceptible to sports fatigue.

These have been overlooked before, and I must take Bolt to check them out.

Mills is different from other coaches. He is the kind of person who will seriously review the game after losing it.

He wouldn't think it was just bad luck.

Especially this time, I think I have done my best.

I already think I have trained Bolt to be what I want him to be.

But still lost.

That was the reason why people used to blame Bolt for not being self-disciplined or not studying his technique seriously enough.

It all shattered here.

Mills thought very clearly.

Lost.

There must be a reason.

We were trying at full speed but still lost. We must find out the problem.

Injuries or physical discomforts that occur in track and field athletes after continuous high-intensity training and competition are the result of the combined effects of mechanical overload, metabolic disorders, neuromuscular fatigue, training-recovery imbalance, and genetic susceptibility.

From micro-damage to biomechanical damage to system-level dysfunction, imbalance in each link may trigger a chain reaction.

To prevent and respond to these problems, it is necessary to establish a dynamic monitoring system based on individual characteristics, combining biomechanical optimization, metabolic regulation and precise recovery strategies to maintain the long-term health of athletes while pursuing athletic performance.

Future research can further explore the gene-environment interaction mechanism and develop personalized sports injury prediction and prevention programs.

Now when Mills thinks of what Su Shen said in his paper, he agrees more and more.

Because of him this time.

There is no excuse at all.

He failed to control fatigue variables and failed to grasp Bolt's state distribution. These were his own problems.

Track and field athletes are prone to injuries or physical discomfort after continuous high-intensity training and outstanding performance. The scientific principles behind this can be deeply analyzed from multiple dimensions, including physiological mechanisms, training load accumulation, and biomechanical compensation.

The analysis should also be combined with sports science theory and empirical research.

Mills actually had the right idea.

The first is the accumulation of microscopic damage to muscles and connective tissue.

During high-intensity training, muscles repeatedly undergo eccentric contraction, such as landing cushioning, and concentric contraction, such as pushing and stretching, which can lead to microscopic injuries such as Z-line dislocation of muscle fibers and sarcomere rupture.

Under normal circumstances, the human body repairs itself through satellite cell activation and protein synthesis, but continuous high-intensity training can cause the damage to exceed the repair capacity.

When muscle damage markers, such as creatine kinase (CK), are persistently elevated to more than 2 times the baseline value.

Athletes' muscle fiber regeneration efficiency decreases, and muscle strength and elasticity are significantly reduced.

Bolt now has this number.

I’m afraid it’s not low.

Creatine kinase CK.

It is definitely exceeding the standard.

No matter how much you are a specimen of God, your biochemical indicators are still those of a mortal body, made up of flesh and blood.

Due to Jamaica's backward training environment and medical conditions, it is impossible to conduct frequent testing, or even basically no testing.

This can be seen from the training environment in Jamaica, where the oldest tugboat is used as weighted resistance.

This is also why if something happens to Bolt, Mills will not use Jamaica’s own medical system team, but will take Bolt directly to Europe.

Especially some of his back problems, so he was taken directly to Germany for treatment.

Why do you think that is? Do you think they think the airfare is too much?

This is because Mills himself knows that the sports medical environment in Jamaica is really not good.

And it is said that on the Su Shen side.

Various indicators will be tested before each game and after each game.

There will also be fixed-point monitoring during a period of time during the training schedule.

Before, Mills thought this was too troublesome and totally unnecessary.

Form is more important than content.

But if you look at it now.

Or I was just too arrogant.

Or maybe I trust my own empiricism too much.

In fact, the development of science and medical technology in this era has played a huge role in promoting any sport.

It is closely related to every sport.

However, this may be difficult to set up, because it is not a simple black-tech sports recovery device.

This requires a complete team and a variety of sports laboratories as a foundation.

But this stuff.

Jamaica has almost none.

Even if it exists, it is useless.

He couldn't even look at it himself, let alone take Bolt with him.

Only when you look at him again at this time can you understand why others have to do such tedious and complicated things.

In fact, if this problem has not been solved, it will be a pity or even a major loss.

People are trying to avoid these regrets and losses in advance.

Mills hadn't noticed this until now.

No, it cannot be said that he has only realized it now, it should be said that he has realized it a long time ago.

But he himself was unwilling to admit it.

After all, he is still a coach who is quite confident in his experience, even a little conceited.

Of course, it is impossible for someone to achieve his level without being conceited and confident in himself.

Otherwise we wouldn't have gotten this far.

It’s just that modern technology is developing too fast. If you don’t integrate with modern technology, you will be surpassed by those who integrate with it…

A hard lesson.

And if he took Bolt to check, he would definitely find other problems.

For example, mechanical fatigue at the tendon-bone attachment point.

Tendons are connective tissues that connect muscles to bones. Their collagen fibers will experience "micro-tears" under repeated high-intensity loads.

Weight-bearing tendons such as the Achilles tendon and patellar tendon have poor blood supply and weak repair ability. When the training load exceeds the tendon matrix remodeling threshold, which is approximately 30%-50% of the maximum tensile strength, tendinopathy will occur.

A follow-up study of 1000 sprinters showed that after 8 weeks of high-intensity training, 68% of the athletes experienced disordered tendon collagen fiber arrangement.

But the theoretical discovery won't be announced until 2014.

Moreover, Su Shen did not write this point in his public paper.

So Bolt has no way to understand this problem now.

Unless he takes it to Su Shen Laboratory.

Otherwise, even in the most advanced laboratories, few people would be able to figure out this problem.

Few people even have this concept.

Not to mention Jamaica.

I don’t know if I will understand it even after 10 years.

Mechanical fatigue of tendon-bone attachment points will be an important theoretical breakthrough in the future.

He gave it to many athletes, and it was clear that their physical condition had recovered well after examination.

But it is easy to decline in performance or even get injured. A scientific explanation was given.

Because of this place.

It is the place that is least likely to be noticed.

But there is actually mechanics in this place.

There is also kinetic mechanics involved here.

Just like the way Bolt's joints shake in the last 10 meters.

Is typical.

In fact, it is about achieving good results through continuous high-intensity competitions. In order to maintain the condition, the intensity is also constantly increased during training.

Keep your status unchanged.

It doesn't seem like there's any big problem, and even the athletes themselves don't feel it.

But in fact, if you understand this problem, you will know that as time goes on, you will have more or less problems at the tendon-bone attachment point.

This is mechanical fatigue.

The recovery time required will be longer.

Not to mention, there is a theory that was not proposed until nearly 10 years ago - the mechanism of cartilage matrix degradation and lubrication mechanism failure.

Weight-bearing joints such as the knee and ankle joints can withstand impact forces of 5-8 times their body weight during exercise, such as during the kick-and-stretch phase of a -meter sprint.

The proteoglycan network on the surface of articular cartilage gradually loses water during repeated compression-rebound cycles. When the water content is lower than 65%, the friction coefficient of the cartilage increases by 40%, resulting in increased wear of the joint surface.

In addition, high-intensity training will inhibit the secretion of hyaluronic acid by synovial cells, reduce the viscosity of synovial fluid, and further weaken the lubrication effect.

Bolt now uses a three-joint torque motion system.

If there is a problem with these important joints.

Then it will naturally affect his athletic performance.

What Mills knew was the cumulative damage to the joint's stabilizing structures.

Structures such as the anterior cruciate ligament of the knee and the lateral collateral ligament of the ankle are responsible for maintaining joint alignment during dynamic movements. Continuous high-intensity training can cause ligament collagen fibers to "creep".

That is, the length increases and the elastic modulus decreases.

When ligament laxity exceeds 15%, joint proprioception is reduced and neuromuscular control ability decreases, leading to compensatory movements, such as knee flexion, which in turn induces meniscus injury or cartilage impingement.

Affects knee performance.

The knee joint is an important part of the three-joint torque technology, a concept proposed by Hewitt in 2005.

Mills knew this.

But he didn't know that.

Actually more.

If it was Su Shen Laboratory, they would definitely make more judgments.

For example, central nervous system fatigue and motor control disorders.

High-intensity exercise relies on precise regulation of muscles by central structures such as the cerebral cortex and basal ganglia.

Continuous training will lead to the depletion of central neurotransmitters such as dopamine and serotonin, which will reduce the excitability of the motor cortex.

When athletes experience central fatigue, their error rate in movement execution increases by 22%, especially in areas that require fine coordination.

Such as the coordination of kicking and swinging during the sprint finish line.

This decreased control ability forces the body to initiate compensatory modes, such as using the lower back muscles to compensate for core stability, causing lumbar spine injuries.

Why did Bolt always suffer from back injuries in the past?

His coach thought he was lazy in training, but it was not the case. Bolt's height and body type need to progress step by step. He just blindly increased the training volume, but did his physical fitness and muscle strength improve?

That would only worsen his already scoliotic body.

More problems arise.

This intuitive reaction is reflected in his back and waist muscle problems.

It’s a pity that Mills can only guess a little about this concept through experience and speculation.

It is impossible for him to know the specific concept now.

There is also oxidative stress damage to the energy metabolism system.

High-intensity training mainly relies on the phosphagen system and glycolysis for energy, and a large amount of reactive oxygen will be produced in the process.

When the amount of reactive oxygen species generated exceeds the clearance capacity of antioxidant enzymes, such as superoxide dismutase (SOD), it will attack mitochondrial DNA, cell membrane lipids and sarcoplasmic proteins, resulting in decreased muscle contraction efficiency.

At the same time, oxidative stress inhibits satellite cell activity, further delaying muscle repair.

More detailed inspections include:

Hypothalamic-pituitary-adrenal axis dysfunction.

Long-term high-intensity training will continuously activate the HPA axis, leading to increased cortisol levels. Although cortisol can promote gluconeogenesis to maintain energy supply, excessive cortisol will inhibit protein synthesis, reduce bone density, and weaken the activity of immune cells.

When salivary cortisol concentrations are persistently above 14 μg/dL, athletes have a three-fold increased risk of upper respiratory tract infection and breathing becomes more difficult.

There is also an imbalance in the testosterone-cortisol ratio and recovery disorders.

Testosterone is a key hormone that promotes muscle synthesis, and continuous high-intensity training can cause testosterone levels to drop by 15%-30%, while cortisol increases, and the ratio of the two decreases. For every 0.1 decrease in the T/C ratio, the rate of muscle protein breakdown increases by 8%, which directly affects the quality of recovery after training.

There is also load transfer caused by power chain imbalance.

Human movement relies on the coordination of the power chain of "foot-ankle-knee-hip-core". When a certain link, such as the dorsiflexion function of the ankle joint, is limited.

Or when there is a decline in function due to fatigue or injury.

The load is transferred to adjacent joints.

This is the key point!
Take the exam!
Calf muscle fatigue in sprinters can lead to an increase in heel strike patterns and a 27% increase in knee impact force, which in turn causes comprehensive discomfort in the three joints.

Coupled with delayed neuromuscular control and a lowered injury threshold.

Muscle fatigue slows down the signal conduction of proprioceptive afferent nerves such as muscle spindles and Golgi tendon organs, extending the time from when the muscle receives stimulation to when it responds by 0.05-0.1 seconds.

During fast movements such as jumping and changing direction, this time difference will cause the joints to be in an unfavorable stress position.

Such as hyperextension of the knee.

The shear force on the ligaments and menisci exceeds their injury threshold.

Finally, there are imbalances in bone remodeling and stress fractures.

For example, imbalanced bone remodeling and stress fractures.

Bones adapt to mechanical loads through the osteoclast-osteogenesis process, but continuous high-intensity training disrupts this balance.

When the compressive stress in the femoral neck, tibia and other parts exceeds 200 MPa, which is about 40% of the ultimate strength of the bone, the activity of osteoclasts is enhanced and the function of osteoblasts is inhibited, resulting in microfractures.

80% of stress fractures occur in athletes who train for more than 12 weeks with a load progression rate of >10%/week.

Combined with the chronic stress load on the cardiovascular system, etc.

and so.

Mills is not wrong in this regard.

If Bolt also had Su Shen's team.

Then he definitely wouldn't have had this problem just now.

This is also part of athletes' training and preparation for competitions.

He stared thoughtfully.

This failure brought him back to his senses from Bolt's high spirits.

Suddenly I realized that this era has reached a different crossroads. If I still stick to traditional personal empiricism like before.

So this time it failed.

It's probably not a coincidence.

Even he suddenly thought of a question.

This year's entire Florist track and field team.

It seems that everyone is achieving results and continuing to make progress, with no tradition of slowing down after the Olympic year.

Aren’t they afraid of getting hurt?

For athletes, injuries are a real problem.

Mills couldn’t figure it out before. It’s okay for just Suarez, but it seems like everyone in their team is working at full speed this year.

Now see Bolt like this.

Plus these insights.

Suddenly it all came together.

So it's not like they don't get tired, or that they're taking risky actions that could ruin their careers.

This is because they have a powerful physiological indicator monitoring system and high-tech equipment, as well as the assistance of a professional sports medical team.

Only then will you have the confidence to do this.

At this point.

I don’t know how many times more than Jamaica.

This is not a question of training mode, training method or training experience.

This is a question of technological level.

Is it...

Thinking of this, an idea suddenly flashed through Mills' mind, but he quickly dismissed it.

Because he didn't want to do that.

As long as there is a slight possibility.

He doesn't want any of it.

But after this game, various monitoring of Bolt must be carried out more diligently than before, even when he is running.

As for those old things.

I can't turn a blind eye this time.

otherwise.

It is not yet my turn to be the person in charge of the runners' club.

He and Bolt are about to step down from the altar.

This.

That's definitely not what Mills wants.

Mills watched.

Look at that Oriental man.

Sudden.

He seemed to be able to empathize with Bolt's feelings.

That's because he started from this moment.

He also stood in the position of Su Shen's opponent.

Now he and Bolt.

Tied together.

Two people.

Let’s fight against Su Shen together.

Sue.

I don't believe it.

You are alone.

Can handle the two of us!!!

Mills never thought that one day he would become a direct rival of an athlete.

but now.

The situation was what had put him in this position.

He had no choice but to take action himself.

Bolt alone.

I can't handle him.