I like to give him some small hospitality.

I also know how to properly inject chicken blood to young athletes.

Can Xie Zhengye not be "spoiled"?

Of course this world line.

I don't know how many excellent track and field athletes.

Everyone wants to be fooled by Su Shen himself.

Whether he has accumulated honors as an athlete or his cumulative scientific research status, he is enough to make him speak and have an "unestimated impact" in the track and field industry.

"Aye, the step-frequency curved arm start has the following biomechanical advantages. If you want to develop, you have to target it."

"The step-frequency starting can improve the muscle's "contraction-relaxation" reaction speed through training, making the brain more efficient in controlling the movements of the lower limbs. At the moment of starting, the nerves can quickly transmit signals, allowing the muscles to contract quickly and generate strength, allowing athletes to obtain higher pace frequency, take the first step quickly and maintain high-frequency steps, and gain a speed advantage in the starting stage."

This is what Xie Zhengye is doing now.

Through the muscle "contraction-relaxation" reaction speed mentioned by Su Shen, the brain controls lower limb movements more efficiently.

Xie Zhengye has been practicing a lot recently.

"A higher pace frequency can help you maintain a better running posture, reduce unnecessary ups and downs, and thus improve overall running efficiency. At the same time, small and fast pace can better control breathing and heart rate, help stabilize your body in a short time after starting, provide a good foundation for subsequent acceleration, and make energy output more stable and efficient."

Xie Zhengye also paid more attention to this aspect in this shot.

The first thing to do is to reduce unnecessary ups and downs.

The key point of doing this is to reduce ups and downs and energy utilization efficiency, so that energy can be distributed more effectively.

This is because from the perspective of energy metabolism, running is an energy consumption process, and the energy that the human body can call at the start is not endless.

According to the first law of thermodynamics, energy will not be generated or disappeared out of thin air, but will only be transformed from one form to another. In the beginning, energy is mainly converted into kinetic energy and energy to overcome various resistances.

Then when the body produces unnecessary ups and downs, part of the energy will be used to increase the height of the body's center of gravity, so that this part of the energy cannot be completely converted into forward kinetic energy.

Su Shen also gave him an example, for fear that he would not understand.

For example, suppose that the athlete consumes energy E1 for each up and down at the start, if this unnecessary up and down can be reduced, this part of the energy can be saved and distributed more to increase the forward speed.

In short-distance running events, the effective utilization of energy is particularly critical, because we need to burst out the maximum speed in a short time and use more energy to accelerate horizontally, which can significantly improve the starting effect.

So what Xie Zhengye is showing here is his own energy distribution optimization.

Let yourself concentrate more energy on acceleration in the horizontal direction.

This is not.

Starting is suppression.

There is more than a little suppression.

Relying on the bent arm starting and these concepts, Xie Zhengye will definitely start spreading his wings this year.

He is about to be twenty years old.

It's time for the first time to get results.

"Gatling reacts the fastest, but thanks..."

"But the fastest startup is still the best one!"

Hayward's live commentator loudly.

His voice quickly spread throughout the audience.

Xie Zhengye continued to move into the detour without hesitation.

Su Shen told him that the ups and downs of his body will be accompanied by additional energy loss.

In a vertical direction, the body needs to overcome gravity to do work, which involves contraction and dilation of the muscles.

This chapter is not over, please click on the next page to continue reading! Every time you rise and fall, the muscles need to do extra work to lift and fall the body. This process will consume ATP, which is the crucial adenosine triphosphate for athletes.

As we all know, ATP is a direct energy substance for muscle contraction. Excessive energy loss will lead to rapid consumption of ATP, which will affect the muscle's ability to contract continuously.

It is bad for any athlete.

For types with high burst requirements, such as sprinting, it is even more fatal.

So Xie Zhengye has reached this level and has won Olympic medals. Then his training needs to be more refined.

It can no longer be as simple and rough as before.

Be good.

Of course, this is what Su Shen said.

The rest of the people will probably get itchy after hearing this.

Just thank Zhengye for all this, tell me...

Is this too simple and rough?

So, what kind of training can be not simple or rough?

Now, you've seen it.

Or train and change something deeper.

Bang bang bang bang bang bang bang.

Xie Zhengye ran, thinking about Su Shen's words in his mind - in addition, ups and downs will also cause changes in air resistance. When the body moves up and down, the relative speed and contact area with the air will change, which will lead to an increase in air resistance.

According to the air resistance formula F = 1/2CpAv², where F is air resistance, C is air resistance coefficient, p is air density, A is the windward area of ​​the object, and v is the relative velocity of the object and the air. From this formula, it can be concluded that when an athlete starts up, the greater the body's ups and downs, the more complex the changes in the windward area and relative velocity will be.

Then the greater the air resistance.

This further increases the energy loss.

...

Damn.

Xie Zhengye listened for the first time.

The head kernels were buzzing.

I just run.

Why do you feel that Ersha Island is better than when studying culture?

It's also a brain-consuming task.

But no matter how much you complain, when you really do it...

He suddenly discovered it.

Su Shen said.

How awesome is it?

How comprehensive it is.

How profound it is.

Fuck.

Who says athletes don’t need to read?

Now I thank Zhengye.

The first one is dissatisfied!

Don't read.

I will tell you how to do it and improve it, but you won’t be able to practice it.
Chapter completed!