Bend into straight.

Su Shen is already the first.

Xie Zhengye is on the bend.

It can be said that I have never been so much behind.

This is what we need to talk about the benefits of reading.

Science comes from knowledge.

Running 200 meters in plateau areas, athletes face unique environmental challenges, where changes in airflow dynamics caused by thin air have a significant impact on running performance.

Then, athletes adopt a lower center of gravity posture and are observed to effectively improve the stability of airflow in this special environment, reduce body shaking and offset, and thus optimize running efficiency.

How to deeply analyze the scientific principles behind this phenomenon?

This is of great significance to my country to improve the quality of plateau track and field training and athletes' competitive level.

Unfortunately, this requires strong professional knowledge as support.

First of all, you need to know the aerodynamic characteristics of the plateau environment. The plateau areas are higher at altitudes and the atmospheric pressure is significantly lower than those in the plain areas.

According to the ideal gas state equation PV = nRT (where P is the pressure, V is the volume, n is the amount of substance, R is the universal gas constant, and T is the temperature), when the temperature changes relatively small, a decrease in air pressure means a decrease in air density.

The decrease in air density changes the interaction between air and moving objects, causing the force of air flow to change on the object. According to the formula for air resistance—

When other conditions remain unchanged, a decrease in air density will lead to a decrease in air resistance.

Then you need to know the airflow characteristics.

For example, complex airflow caused by terrain.

The plateau area has a complex terrain, and the terrain of mountains, canyons and other terrain makes the airflow block and guide during movement.

For example, in valley areas, during the day, the hot air rises on the hillside during the day to form valley wind, and at night, the cool air sinks on the hillside to form mountain wind. This kind of valley wind alternating day and night causes the direction and speed of the air flow to change continuously. In addition, when the air flow passes through obstacles such as peaks, it will form circumcision and vortex, making the air flow disordered.

For example, turbulence phenomenon.

Due to the low air density, the viscous force of the airflow is reduced, making turbulence more likely to form. Turbulence is an irregular flow state, which contains vortexes and pulsations of various scales.

In plateau areas, factors such as uneven heating of solar radiation and roughness of the terrain have exacerbated the formation of turbulence. During running, athletes will be subjected to random airflow forces when entering the turbulent area. The magnitude and direction of these forces are constantly changing, which will interfere with the athlete's body posture.

Only by understanding these basic principles can you know which direction you should make.

If you know nothing about these basic principles, then you can only touch the elephant by blind people.

Two words to fool you.

Su Shen is a person with a complete scientific system.

This is also why sports science needs to combine the progress of other sciences and supporting research.

This is just this.

When Su Shen said it.

All shocked a crowd.

Including Randy and Ralph Mann.

Neither of these two bigwigs expected that they could be deduced from this aspect. In fact, in a lofty place, they could appropriately lower their center of gravity.

As for how much does this low scientific angle affect the changes in other angles of the body?

That is the point that needs to be practiced and studied.

But if you can't even touch this direction.

You can't just say research.

Even the door cannot be entered.

What's more, Su Shen not only knows where this general direction is, but also understands the exact data difference.

Then his really only needs to be fine-tuned within this range.

The cost of trial and error is extremely low.

Only by understanding these can you understand the next step.

Mechanism of influence of low center of gravity posture on airflow stability.

It's like the windward area and resistance decrease in proportion—

When athletes use a lower center of gravity posture, the area in the body facing the wind decreases.

Compared with standing posture and low center of gravity running posture, the projection area of ​​the body in the horizontal direction can be reduced by about 15%-20%.

According to the air resistance formula, a smaller windward area can further reduce air resistance and reduce the direct impact of the airflow on the body on the basis of the reduction of the plateau air density.

It's like streamlined optimization based on this.

Study the effects of low-center-of-gravity postures that make athletes' body shape closer to streamlined shapes.

It is studied that during running, air can flow more smoothly through the body surface, reducing airflow separation and vortex generation.

Put it to a more specific point—

For example, athletes with appropriately lowered their heads, chests, and hips bent their lower center of gravity postures make their body contour more in line with the trend of airflow flow and reduce the unstable force caused by airflow disorders.

Then it is based on the conservation and stability of angular momentum.

According to the law of conservation of angular momentum L = Iw (where L is angular momentum, I is moment of inertia, and w is angular velocity), the lower center of gravity increases the moment of inertia of the athlete's body.

When an athlete is disturbed by airflow to generate an external torque, the change in the body's angular velocity will decrease due to the increase in moment of inertia, thereby reducing the degree of body shaking and offset.

For example, when impacted by lateral airflow, the torsional amplitude of the athlete's body in a low center of gravity posture is significantly smaller than that in a high center of gravity posture.

Then advance to support surface and balance maintenance.

The support surface of athletes is relatively larger in the low center of gravity posture.

Then during running, the feet contact the ground to form a support surface, and the lower center of gravity can make the projection of the center of gravity closer to the center of the support surface.

According to the equilibrium stability theory, the larger the support surface, the lower the center of gravity, and the higher the stability of the object.

Therefore, the low center of gravity posture allows athletes to adjust their body posture more quickly and maintain balance when dealing with airflow interference.

Bang bang bang bang bang bang bang.

Su Shen curve enters the straight road.

In order to continue to maintain a low center of gravity posture and to realize the potential of Jamaican running, muscle activation and strength transmission are things to do well.

When running in a low-center of gravity posture, the athlete's core muscle groups, such as rectus abdominal, internal and external oblique muscles, erection spinal muscles, etc., will be activated more strongly.

This chapter is not finished yet, please click on the next page to continue reading the exciting content later! These core muscles not only play a role in stabilizing the spine and pelvis, but also adjust the body posture by rapid muscle contraction and relaxation when the body is disturbed by airflow.

For example.

When the body is tilted to one side by the impact of airflow, the core muscles can quickly exert force, returning the body to a state of equilibrium.

For example, wind speed.

It's just one.

At this time, the stronger the core is, the stronger it can be.

The strength of the core directly affects the efficiency of force transmission.

Because the low center of gravity posture helps to improve the efficiency of transmitting strength in the lower limbs.

During running, the force generated by pushing the lower limbs into the direction of progress needs to be transmitted through the body.

The lower center of gravity makes the force transmission path shorter and more stable, reducing the loss of force during the transmission process.

At the same time, in order to make yourself stronger.

Not slow down.

The angles of the hip, knee and ankle joints in the low center of gravity posture are more conducive to the muscles' force and output of strength.

This allows you to maintain speed and posture more effectively when fighting airflow interference.

This place.

Although it is not the same as the American style of running, rest depends more on inertia to save effort.

But it doesn't mean to do nothing.

Since the intensity is getting higher and higher.

The consumption of the body will definitely increase.

At this time, you don’t want to save physical fitness like a distribution burst.

Want to continue to push the speed down.

Then there are other ways to maintain a better speed.

Keep this speed longer and longer.

One of the ways that Su Shen did was-

Respiratory mechanics and gas exchange.

In a plateau environment, respiratory function is crucial to athletes' performance.
To be continued...