After the rest of the things are arranged.
The highlight is definitely the two yellow-skinned ten-breakers now.
After reaching this point, their combat effectiveness has even been directly equal to that of the yellow-skinned Asia.
In addition to taking into account other projects, you must not drop it. You must also start training on the latest technology.
And obviously, sprinting is generally in the range of 40+ steps. In other words, your landing technique must be practiced well, with more than 40 steps. It seems to be only about 40 steps, but for ordinary people, for top 100-meter athletes like Su Shen and others, how to pick out the details may be the key to success or failure.
Bang, bang, bang, bang, bang.
Zhao Haohuan ran past quickly. After a few dozen meters, he stopped and walked over to watch the capture by the high-speed camera with Su Shen.
A PULNIXTM-6710CL high-speed camera system is used.
This is the most advanced high-speed camera system in the world right now.
What else would Yuan Guoqiang say? Ersha Island is the absolute number one track and field holy land in Asia. The first thing is...
You have to keep up with the equipment, right?
Otherwise, what do you mean by the number one track and field holy land?
This is not an era where results could be achieved based on a little personal experience.
After Yuan Guoqiang used these high technologies himself, he understood why Su Shen had always insisted that "Ersha Island's technological upgrading" must be done well. Because compared to experience and the naked eye, this high-tech product can instantly let you understand what dimensionality reduction attack is.
Many things that don't seem to have many problems with the naked eye may look completely different when viewed through a high-speed camera system.
Then there is a Sushen laboratory to start trial operation of the ATAS three-dimensional image analysis system.
Everything began to make Ersha Island completely enter the Ersha Island environment that Su Shen was familiar with.
even.
Even more so.
"It's too thick, Gou Huan. Don't talk about credit cards all of a sudden, you are a comeback. I'm afraid you are really a Xinhua Dictionary." Su Shen said after reading the joint analysis of the PULNIXTM-6710CL high-speed camera system and the ATAS three-dimensional image analysis system. He said: "It's too slow to run like this. Your rhythm may have been better before."
Zhao Haohuan also sees it clearly. This is the benefit of technology. It is shown with your own eyes so that you can see it clearly.
I won't give myself any more excuses.
"During a sprint, push your feet off the ground. After your calves are folded, hook your toes and actively swing forward to press down for support. For a moment, the ankle joints are compressed, and the distance between the heels and the ground is only a credit card." Zhao Haohuan immediately put it in his mouth. When he talks about the basic "credit card rules", it can be seen that he has already memorized them by heart, but just because he is familiar with them doesn't mean that you can use them easily.
"Zhao, I think the biggest problem is that you are not familiar with your movements, and you are always distracted when landing, which causes you to completely lose your ability to move forward." Randy is also here. His main task this winter training is Fully responsible for the breakthrough and improvement of Su Shen and Zhao Haohuan.
"And here." Su Shen pointed to the slow motion of the analysis clip that was constantly playing on the computer screen and said: "I think Gou Huan's maximum buffer time is very poor, maybe because his center of gravity is naturally too high. Between the front support and the rear support, the most appropriate moment is when the angles of the three joints, knee, and hip, are reduced to the greatest extent, and the center of mass of the body has passed the forefoot, but there is obviously a big problem here."
"Please take a look at mine later, coach. I think I may have a problem with this aspect as well." Su Shen has always been outspoken about problems. Because this is not politics or the workplace, this is a track and field, and everyone is a national team member. All goals should be to improve performance.
Moreover, he made no secret of his problems, which also made many people feel that Su Shen truly had an "innocent heart."
Most people, when they reach the position of "backbone", will still care about face, even if they know there is a problem, they will not take the initiative to admit it, but Su Shen has basically never had such a thing.
Really. Say what you have to say.
Bang, bang, bang, bang, bang.
After Su Shen also ran a group, he came over to look at the system analysis. After looking at it for a while, Randy nodded and said: "Yes, Su, you also have this problem, and you also have a problem with your maximum buffer time. Zhao may be because of his height. The center of gravity is too high and you are pressing too hard, which actually affects the rhythm of the credit card implementation."
Su Shen looked at it and found that it was indeed the case. What Randy said was not wrong at all.
His group's running was too focused.
After another set.
"Zhao, the ankle angle when leaving the ground is better, but the ankle angle at the maximum cushioning moment is still not good, it is too high." Randy looked at the screen analysis system and said: "The change in the speed of the body's center of mass during the front support phase is very problematic. "
"Zhao, you have to know that sprinting is a typical event that combines speed and strength. Since it is an event that combines speed and strength, the horizontal speed of the center of mass will be one of the important factors that affect the sprint performance. In this case, we are training in sprinting Strive to obtain the maximum horizontal speed and reduce the vertical speed. Look at your area." Randy pointed to a part of the screen and said: "The vertical speed of the center of mass has a greater impact on the horizontal speed. The vertical speed causes the center of gravity to fluctuate too much, which affects the speed in the horizontal direction, causing a loss of speed in the horizontal direction."
Zhao Haohuan looked over and found that this was indeed the case.
"Maybe I paid too much attention to the issue of maximum buffering and ignored this issue. I'll try to improve it later."
"Okay, you have to remember that on the premise of ensuring that the forward horizontal speed is large enough, the speed in the vertical direction should be reduced to create favorable conditions for obtaining greater horizontal speed." Randy said, pointing again Ichijo said: "And your free hip has also been affected. Forget about the free hip, you are too tight. Your free hip is already very familiar. You don't need to think too much about it, but it will affect it."
“Just relax and focus on what you need to improve.”
"Okay, I'll try again later." Zhao Haohuan nodded.
Afterwards, Su Shen ran again and conducted data analysis and arrest again.
This is the improvement model of real super masters, because for them, most of the existing technologies have basically been mastered, and it is only a matter of application and on-the-spot performance. Therefore, the areas they want to improve have begun to become...
detail.
detail.
detail.
Say important things three times.
So you can often see Su Shen and others sitting together with Randy on Ersha Island, staring at the computer screen, expressing opinions and nodding from time to time. This is the scene of improvement by international masters. It is completely different from those who have not broken through ten and still have a lot of technical skills that they have not yet fully understood.
"You also have a big problem with your center of mass this time." Randy pointed to a part of the pop-up part of the analysis system, clicked pause, and said: "In the front support stage, the average speed of the center of mass of the forefoot support technology in the horizontal direction is 8/s. , the average speed in the vertical direction is -0/s; the average speed of the center of mass of the full-foot support technology in the horizontal direction is 8/s, and the average speed in the vertical direction is -0/s. Do you still remember the target value we set? "
"The average speed of the landing technical center of mass in the horizontal direction is 9/s. The average speed in the vertical direction is 0/s."
"At the same time, you also have the problem of poor changes in the speed of the body's center of mass during the back support phase." Randy said quickly: "Originally, this landing technique should show a higher horizontal speed, and the average speed in the vertical direction should be smaller. Yes. This shows that the speed of this technology in the vertical direction is small, the fluctuation of the center of mass of the body is small, and the impact on the speed loss in the horizontal direction is small. It is conducive to exerting the horizontal forward speed during the rear support push and extension phase, but this part is not done well. No, the entire center of mass point has begun to float. We have studied that the "credit card" landing technology should show a high horizontal speed and a small vertical speed. It should be more conducive to the horizontal acceleration of the center of mass, and your wave , or more like the forefoot support technology. Although there is a large horizontal speed change, the speed in the vertical direction is also very large, which will inevitably cause the body's center of mass to fluctuate too much, affecting the forwardness of the center of mass speed."
"Yes." Su Shen also looked at it seriously and nodded slightly.
At this level, subtle technical changes may determine success or failure.
This is why he actually still needs Randy, a professional master coach.
If a person is reckless, that is only suitable for the initial stage. It is only suitable for the stage before breaking ten at the beginning, and after breaking ten.
On the contrary, we need more help from others in order to achieve a better breakthrough.
…
"The front-pedaling stage refers to the process from when the foot lands on the ground to when the projection point of the total center of gravity of the human body moves above the landing point. At this stage, because the foot supporting the leg changes from being supported by the forefoot to being supported by the whole foot, and From the support of the whole foot to the support of the forefoot. Therefore, when the human body is on the ground for cushioning, the movement of the human body is from the back of the support point to the vertical upper part of the heel, and then from the vertical upper part of the heel to the vertical upper part of the forefoot. Okay. You can try it."
…
"I think that in the early stage of landing buffering, because the projection point of the total center of gravity of the human body falls behind the landing point, after the swing leg lands and becomes a supporting foot, the force given to the ground by the sole of the foot points forward and downward, and its force is decomposed into vertical downward components. and the forward horizontal component force, causing the body to generate a force that tends to slide forward. At the same time, the body receives an equal and opposite reaction force from the ground. The support reaction force can also be decomposed into a vertical upward component and a backward horizontal component. .The direction of this force is opposite to the direction of body movement. It is the resistance of movement and a braking force, which prompts the human body to decelerate. Since the swinging leg of the human body actively swings backward and downward during soaring movement, the foot of the swinging leg Actively and proactively land on the ground in a scraping manner. Correct scraping technique can reduce the horizontal speed of the foot relative to the ground at the moment it touches the ground, and reduce the horizontal braking force of the ground on the human body. You are too focused on buffering during this period and have ignored it. Scratching the floor, you need to pay attention to this."
…
"In the late stage of landing buffer, as the body moves forward, the projection point of the human body's center of gravity quickly moves from vertically above the heel to vertically above the landing point. But since the human body is moving above the support surface, the support reaction force on the human body is The point is forward and upward. The horizontal component of the support reaction force on the human body is in the same direction as the human body's movement. It is a driving force that prompts the human body to accelerate. However, when I just ran, I felt something was wrong. I didn't feel the front movement of the body at all. Move. I don’t know what the problem is, please help me wait and check again.”
…
"I think there is this problem. It may be that the angle of the hip joint tends to increase during the landing cushioning process. The angle of the knee joint keeps decreasing. The angle of the ankle joint first decreases and then increases, which means that during the front pedaling stage, The hip joint muscles always contract with restraint, and the knee joint muscles contract with concession. When the human body shifts from front pedaling to back pedaling, the knee joint angle also changes from decreasing to increasing, and the contraction characteristics of the muscles also change from The give-and-take turns to restraint. The angle of the ankle joint stops when the body's center of gravity moves from behind the support point to vertically above the heel, and decreases until it can no longer decrease. Its muscles undergo a give-and-take contraction. When the body's center of gravity moves from the heel to the heel, During the process of moving vertically above the landing point, due to the structural characteristics of the ankle joint, the deformation range of the Achilles tendon, etc., the angle of the ankle joint cannot continue to decrease, which will force the angle of the heel and ankle joint to increase and increase the angle of the heel. Caused by a shift into restrained contraction.”
"No, no, I still think it's in the early stage of landing. The reason why the human body's center of gravity is behind the support surface is because the human body receives the support reaction force from the ground level backwards by the soles of the feet as resistance. In this process, although the hip joint muscles are When a restrained contraction is performed, the contraction force acts on the ground through the supporting feet, and the horizontal component of the supporting reaction force generated is in the same direction as the human body's movement. This is the driving force, but the driving force is less than the resistance, so the human body will still act Slow down the movement.”
"But if you put it like this, you can't explain clearly the problem that the projection point of the human body's center of gravity moves from vertically above the heel to vertically above the landing point in the late stage of landing buffer. Because the horizontal component of the supporting reaction force is in the same direction as the human body's movement , and if the hip joint and ankle joint muscles perform restrained contraction at the same time, the contraction force will increase the acceleration of the human body through the horizontal component of the support reaction force generated by the support foot acting on the ground. This is obviously not consistent."
…
The entire winter training continues in this atmosphere.
If there are no god-given perverted plug-ins and can only rely on future scientific knowledge, this is the scenario.
This is also a scene that will inevitably occur when the winter training of real elite-level track and field sports increases and adjusts skills.
Of course, this is a common thing in Ersha Island, but it shocks the hearts of Liu Xiang and Sun Haiping every day.
After all, if athletes can participate in discussions with coaches about these things, how good will the training foundation of this training base be.
It's unimaginable.
"I'm really looking forward to the results after this winter training."
It has to be said that Liu Xiang himself began to look forward to and longing for the performance after the winter training when he came to Ersha Island for the first time.
It is said that the "winter training in Ersha Island is magical". This time I want to see with my own eyes how magical it is.
PS: First update~~~~~~~~~
The technical part is more difficult, so I’ll keep writing as usual and write a little slower~~~~~~~~~
