The Su God of the Reopening of the Sports Arena

Chapter 2295 Scientific Approach is the Core Theme for All High-Level Athletes in the Future
The three principles of startup—

1. Vector decomposition of force: By adjusting the proportion of horizontal/vertical force components through the push-off angle, a balance between "propulsion" and "stability" can be achieved;
2. Rotational inertia optimization: Reduce swing energy consumption by adjusting body posture, including arm and leg retraction;
3. Neuromuscular matching: Select "burst" or "rhythmic" activation mode based on muscle fiber type.

BOOM ...

Gardner's 11-second flat time in the semifinals relied on a "zero-error start," the core of which is "redundant design."
Take this shot, for example.

The reaction time was deliberately slowed to 0.15 seconds to avoid false starts, but the continuity of the movements after starting reached 98%.

The step length increase is controlled at 0.1 meters per step to ensure that the standard deviation of the center of gravity trajectory is ≤1.8 centimeters.

The arm swing amplitude should be fixed at 70% of the shoulder joint's range of motion to avoid excessive movement that could lead to imbalance.

She did this by taking advantage of the biomechanical stability mechanism of step size amplification control.

The step length increment is controlled at 0.1 meters per step, meaning each step increases by 0.1 meters compared to the previous step. Essentially, this achieves low-fluctuation operation of the center of gravity trajectory by linearizing the step length change rate.

According to the theorem of center of mass motion, the displacement of the human body's center of mass is determined by the product of step length and step frequency. When the step length increases too much, it will cause the vertical impact force to increase sharply during the support phase, with an increase of up to 30%, causing the center of mass to fluctuate up and down with a standard deviation of >3 cm.

The balance between the horizontal force exerted on the ground and air resistance is disrupted, and the forward and backward shift of the center of gravity increases by ±5 cm.

Gardner's 0.1-meter increment strategy allowed the step length to increase smoothly from 0.85 meters in the first step to 1.05 meters in the third step, with the step length change rate remaining stable at 11.8% per step.

The motion capture data here shows that the standard deviation of its center of gravity trajectory is controlled at ≤1.8 cm, which is only 50%-60% of that of athletes with large increases.

This stability stems from the gradual realization of momentum conservation: the horizontal momentum increment Δp=m·Δv at each step is uniformly distributed, avoiding energy consumption for attitude adjustment caused by sudden momentum changes.

So you can't say that Emilia has no ability at all.

Their exercise experiments are still among the most advanced in the world.

Without Su Shen.

They come with a knowledge system that is decades ahead of its time, a huge amount of capital as a foundation, and a ten-year timeframe to plan ahead.

You simply can't handle that.

The strongest one right now is still the Amelica Laboratory.

There is no doubt about this.

The quantitative control principle of the standard deviation of the center of gravity trajectory in this wave is quite good.

This aligns well with the biomechanical stability mechanism of step size amplification control.

Stewart, on the other hand, is a well-rounded, all-around starter with balanced skills.

Her starting block layout combines explosive power and stability: a front-to-back distance of 1.35 meters and an angle of 6°, which makes the horizontal force account for 79% and the vertical force account for 21%, close to the theoretical ratio (8:2).

In the ready position, her center of gravity is 1.05 meters high, which is 0.618 of her height. This center of gravity position gives her a stability margin of 15 centimeters during the support phase.

Upon activation, its neuromuscular system exhibits "biphasic activation": 0-0.1 seconds of fast-twitch muscle fiber bursts, followed by a switch to fast-twitch muscle synergy after 0.1 seconds.

The CP consumption rate remained stable at 1.0 mmol/kg/min.

It balances speed and endurance.

Her approach here is a smooth transition mechanism for ground reaction force.

In other words, the linear control of the step size increase directly affects the curve characteristics of the ground reaction force.

A 0.1-meter increase keeps GRF's vertical force peak at 2.8 times body weight, while for athletes with a large increase it reaches 3.5 times, and reduces the fluctuation of horizontal force by 40%.

This "low peak value, high stability" force curve has a dual advantage.

Joint protection effect.

The impact load on the knee and ankle joints is reduced by 25%, which is suitable for the lower limb joints of female athletes.

In particular, the anatomical characteristics of the anterior cruciate ligament of the knee joint—the varus moment of the knee joint in women is 15% higher than that in men, and low impact load can reduce the risk of sports injury.

Secondly, there is the effective transformation of force.

That is, the proportion of the horizontal component of force remains stable at 75%-78%.

According to the formula for calculating work, W=F·s, a stable horizontal component of force keeps the output deviation of propulsion work for each step within ±5%, thus avoiding energy waste.

Muriel Ahore, on the other hand, represents the explosive launch of African power.

Ivorian athlete Ahore's starting technique exhibits "impact characteristics," with his push-off force reaching 4.0 times his body weight.

However, the force only lasts for 0.15 seconds, forming a typical "steep force-time curve" pattern.

This pattern stems from its muscle fiber type—type IIb fast-twitch muscle accounts for 45% and has a contraction speed of 8.5 sarcomeres/second.

The starting blocks are set extremely far forward: the front block is 1.3 meters from the line. This layout makes her first step 1.0 meter long, but at the cost of increased center of gravity fluctuations.

To counteract the fluctuations, she uses a "wide-base arm swing"—the distance between her arms is 20 centimeters wider than her shoulders, which generates a greater stabilizing torque when swinging, keeping the body tilt angle within 3 degrees.

The metabolic characteristics during the initiation phase showed that her phosphocreatine consumption rate reached 1.2 mmol/kg/min, and this "aggressive energy supply" enabled her to reach a speed of 5.8 m/s from 0 to 30 meters.

However, this also led to the lactate concentration reaching 12 mmol/L earlier than expected after 60 meters.

But she also has her own unique skills.

To elevate athletes to this level, both the team and the coaches must have their own unique skills.

For example, this is what we call the low-load activation principle of muscle synergy mode.

That is--

Female athletes have an average of 30%-35% lower muscle strength, especially in the upper limbs and core muscles, than male athletes. Too rapid an increase in stride length can disrupt the balance of muscle coordination.

The 0.1-meter amplification strategy adapts to the characteristics of female muscle strength by reducing the fluctuations in the activation intensity of synergistic muscle groups.

Then utilize the dominant muscle groups of the lower limbs:

Maintain a stable quadriceps activation intensity of 65%-70% MVC to avoid incomplete extension due to insufficient strength.

Balanced muscle groups:

The gluteus medius is used to control pelvic stability.

The activation synchronicity error of the oblique abdominal muscles, which are used to maintain trunk rigidity, is controlled within ±3ms, which is especially important for women.

This is because women's pelvises are 10% wider than men's.

Low-load coordination of the core muscles makes it easier to maintain a neutral pelvic position.

This is a physiological advantage.

Electromyography analysis showed that female athletes using a 0.1-meter amplification technique experienced only a 15% increase in creatine kinase concentration, a marker of muscle fatigue, 5 minutes after initiation. This was significantly lower than the 30% increase observed in athletes using a larger amplification technique, demonstrating that this strategy can delay neuromuscular fatigue.

This is not something that everyone is unaware of; it's a result that has been known for a long time.

We can simply make use of it.

The technology itself that is combined.

That's already pretty good.

Compared to their former American number one, Jeter.

The startup was much more discreet.

In the past, that would have been a violent start.

It's a tribute to the fact that she clearly no longer has that ability, or even the level she had last year.

It was three beats slow to start.

If you watch a lot of track and field competitions, you'll notice that this is a veteran's economical start.

As a veteran in his 30s, Jeter's starting technique has begun to focus on "energy saving," which means his starting block spacing is 1.4 meters and his push-off angle is 42°.

This loose layout reduces muscle contraction intensity by 15%, but through "force vector optimization," it still maintains an initial acceleration of 0.85 m/s.

In the ready position, her torso leans forward by only 38°, a "conservative posture" that reduces the air resistance coefficient by 10%.

At the same time, it reduces the energy consumption of the core muscle groups.

At startup, the arm swing amplitude is 20% smaller than usual, but the swing frequency is strictly synchronized with the step frequency (1:1). This "low amplitude, high frequency" arm swing reduces upper limb energy consumption by 25%.

This year, her team also performed a biomechanical analysis on her.

Biomechanical analysis shows that the smoothness of her ground reaction force curve during the support phase was only 92% this year, with no obvious peak fluctuations.

Then we can no longer use force to start the engine by pushing off the ground.

Only gentle pushing off the ground is allowed.

This "gentle push-off" technique reduces the impact load on the joints by 20% and prolongs the muscle exertion time from 0.18 seconds to 0.2 seconds. Although it sacrifices some instantaneous power, the total power output remains unchanged.

What makes a professional bio-sports laboratory in the United States truly impressive?

Don't think that others are simply incapable.

If it weren't for Su Shen, the one who restarted the game.

Indeed, it is sports technology worldwide.

The vast majority of the crystals are here.

Therefore, even as they age, they will make various adjustments based on the athlete's physical condition.

Unlike here, where we rely on so-called coaching experience and skills.

Make some changes to the data that you yourself don't even know the details of.

At the same time, by sacrificing some instantaneous power, Jettel's motor neural network adapts to low fault tolerance better than by forcibly outputting instantaneous power.

This is because the motor nerve conduction speed of female athletes is about 60m/s, slightly lower than that of males (65m/s). Too rapid changes in stride length can exceed the "error tolerance range" of neural regulation.

The 0.1-meter amplification strategy extends the neural feedback regulation time.

Each step allows for a 0.02-second correction window.

Adapted to female neural conduction characteristics.

This is Jeter.

When the stride length increase is ≤0.1 meters, the feedback signals from muscle spindles and joint receptors can complete the regulation of the spinal reflex arc within 0.05 seconds, with a correction range of only ±2°.

If the increase reaches 0.15 meters, the feedback adjustment time needs to be extended to 0.08 seconds, and the correction range needs to reach ±5°, which can easily cause motion deformation.

This "slow-adjustment, high-precision" neural control mode aligns with the advantages of the female brain's motor cortex in regulating fine motor skills.

The proportion of gray matter in the motor cortex is higher in women than in men.

This adaptation further enhances startup stability.

You just say, something so rigorous, so scientific.

How could athletes from other countries possibly possess that?

The United States has dominated track and field for so many years, and it's not just because of asthma medication.

Another American athlete, Octavik Freeman, adopted a completely different rhythmic start.

Freeman's startup technique is based on a time control system.

Its reaction time is stable at 0.145 seconds.

The time taken for the first two steps of startup is strictly controlled within 0.38 seconds.

Through long-term training, the motor cortex of the brain develops a conditioned reflex to the starting signal, reducing the signal transmission delay to 0.012 seconds. At the same time, the starting block pedal angle is adjusted to 7° upward tilt, a design that extends the lever arm of the ankle joint during plantar flexion by 15% and increases the final push-off speed by 8%.

In the starting position, her shoulders drop 3 centimeters and her scapulae retract, putting her latissimus dorsi muscles in a pre-activated state, which can generate an additional 10% backward pull when swinging her arms.

The step size control during the startup phase exhibits a "golden ratio".

The first step is 0.9 meters, the second step is 1.0 meter, and the ratio of the two steps is 0.9.

It conforms to the rhythmic pattern of the Fibonacci sequence.

This ratio keeps the standard deviation of the center of gravity fluctuation within ±2.1 cm, reducing energy waste by 12%.

In comparison, the Okabaré is much rougher.

However, it also utilizes a lever arm.

Ocabarre's starting technology this year embodies the "maximum lever arm" design: the front starting blocks are 1.4 meters from the line, and the rear starting blocks are 1.3 meters apart, forming a 45° push-off angle.

This layout, combined with her 1.80-meter height, allows her hip joints to extend to a range of 160°.

The lever arm of the quadriceps muscle extends to 0.5 meters!
According to the torque formula M=F·L, the torque for pushing off the ground increases by 30% under the same force.

In the starting position, her knees are bent at 140°. This squatting posture stretches the gluteus maximus to 1.3 times its resting length, which, according to the length-tension relationship, increases the contractile force by 18%.

At startup, the vertical component of its force applied when pushing off the ground accounts for 35%.

The height of the body when it jumps is 5 centimeters higher than that of the opponent.

However, through "rapid cushioning technology," the knee joint can bend from 170° to 130° within 0.1 seconds when starting and landing.

Convert vertical vibrations into horizontal power.

The energy conversion rate reaches 75%.

For her current height, it's already a good choice.

In terms of neuromodulation, her coach's approach is to rely on the "slow muscle to fast muscle transition" strategy, with slow muscle fibers (type I) accounting for 60% in the initial activation stage.

After 0.5 seconds, it quickly switches to fast-twitch muscle dominance.

This transition delays lactic acid buildup by 0.3 seconds.

To conserve energy for the later stages.

This is also the key to Okabarre's ability to break 10.80 seconds this year.

Management mechanisms for energy metabolism.

This is Okabarre's new signature move this year.

The 100-meter start phase mainly relies on the phosphagen system for energy, but its reserves are limited, about 5 mmol/kg wet muscle.

Existing incremental strategies extend the energy supply time of the phosphate generator system by reducing energy consumption per unit step.

每步的能量消耗稳定在85-90J，10米内总能耗减少15%-20%。

This characteristic is particularly crucial for female athletes—the maximum energy supply rate of the female phosphagen system is 10%-12% lower than that of the male.

Low-consumption strategies can prevent premature "energy shortages".

Then use this to delay the lactic acid buildup reaction.

The high-intensity muscle contraction caused by excessive stride length increases accelerates glycolysis and causes a sharp rise in lactic acid concentration. For athletes with large stride length increases, lactic acid levels can reach 8 mmol/L after 30 meters.

Existing amplification strategies work by reducing the oxygen debt of muscle cells.

It slows down the accumulation of lactic acid.

The stability of muscle contraction intensity increases the oxygen release efficiency of myoglobin by 10%, and increases the participation of aerobic metabolism.

The lactic acid concentration at a distance of 30 meters was controlled at 5 mmol/L.

This aligns with the physiological characteristic that women have 18% lower glycolytic enzyme activity than men.

Avoid decreased muscle contraction efficiency due to metabolic acidosis.

Here you will be able to discover the second decade of the 21st century.

The technological level and technological content of the entire sports industry.

It is improving rapidly.

With the help of various devices, computer software, and the development of science and technology.

The exercise is becoming increasingly scientific.

It has become a general trend.

If you don't use it, you will fall behind.

Your development skills will be weaker than others.

You can see who can achieve this level now.

None of them are bad at this.

Even Okabaré's team began to try using various scientific principles to improve and solve the problem of athletes stagnating.

However, these people are fast.

But that's how competitive sports are.

You're fast, but there's always something faster.

Everyone's attention will only be focused on being faster.

The two fastest players in this race.

It's in lanes 5 and 6.

Jamaican athlete Frazier.

It adopts an ultra-short-range start-up system driven by explosive power.

This model is also a characteristic of Francis's coaching style.

Whether it's Frazier or Powell.

This is the pattern of development.

Fraser's startup technology is based on a "power-first" biomechanical model.

Its starting block layout exhibits extremely personalized characteristics.

The front starting block is 1.25 meters from the starting line, and the rear starting block is 1.1 meters away from the front starting block, forming a 38° push-off angle.

This compact layout is well-suited to her 1.52-meter height, which shortens the lever arm of her lower limb muscles by 30% during the push-off. According to the power formula P=F·v, the shortened lever arm forces the muscles to contract faster, ultimately resulting in a push-off power of 12.8kW.

In the starting position, her hips are 15 centimeters higher than her shoulders, her knees are flexed at 110°, and her ankles are dorsiflexed at 25°. This posture puts her quadriceps in an "optimal pre-stretch state."

The length of the sarcomere was stretched to 2.2 μm.

Based on the Hill equation.

At this point, muscle contraction force can increase by up to 22%.

After the starting gun fired, within a 0.138-second reaction time, her nervous system completed triple regulation.

Alpha motor neurons instantaneously activate fast muscle fibers, with the electromyographic amplitude reaching a peak of 850 μV within 0.5 seconds.

The gamma loop enhances muscle spindle sensitivity, ensuring the stretch reflex is completed within 0.02 seconds.

Spinal cord interneurons coordinate antagonistic muscle inhibition, ensuring that the push-off motion does not consume excessive energy.

The first four steps of startup exhibit a "step-by-step acceleration".

Extremely high step frequency.

This increase in cadence stems from the fact that his Achilles tendon elastic modulus is 25% higher than that of an average person.

The elastic potential energy stored when pushing off the ground can be released within 0.05 seconds.

This translates into an additional 8% thrust.

All of this made her rush out and become the first.

Just because this year is the year after the Olympics doesn't mean their strength has to decline.
This is true for the vast majority of people, but there are always exceptions.

In addition to scientific methods, cutting-edge technology is used to maintain it.

And then there are people like Frazier.

He was originally a superhuman in terms of physical endurance.

She is even more capable than Bolt in this regard.

In addition, he has a starting ability comparable to that of a man.

It also has the fastest reaction time.

If she's not number one, then who is?

According to common sense.

Or rather, according to the original course of this match.

Frazier will leave everyone behind from the start.

The suspense was over from the very beginning.

He left the others several meters behind.

They easily won the championship.

He's been incredibly strong this year.

Even if you look at hard power.

His shot was even more powerful than the so-called Pb last year.

And he's similar to Bolt.

Similarly, they set their limits in major competitions.

It's absolutely flawless.

No wonder Francis always says in front of the media that although she doesn't have a super alien like Bolt, she does have the talent for female athletes—

But he was able to have Frazier.

This is already incredibly lucky.

After all, it's the runners' club.

Few female athletes can compare to Frazier of the MVP club.

just.

on this timeline.

A challenger has emerged.

Only.