In front of the runway.

"Old Yu, this 400-meter sprint, is Zhang Guan good? The 400-meter run is very difficult to run in 46 seconds. You usually train Zhang Guan, how is his 400m technique? Director Ma asked.

"To tell you the truth, Zhang Guan's 400-meter technique is still worse than that of other athletes in the national team." Yu Zhi's voice changed, and then said: "But the physical talent is really good, and it is very perfect in terms of the distribution of movement rhythm. ”

Director Ma didn't seem to understand, and he said, "Old Yu, what you said sounds a little inconsistent!" The most difficult technique in this 400-meter dash is the distribution of exercise rhythm, didn't Zhang Guan just say that Zhang Guan's technique is not good? ”

"The technology I'm talking about is not good, it's the basic technology." Director Yu also said helplessly: "But he is really good at rhythm distribution, as if it is as stable as a computer." I don't really have a way to explain this. You'll find out in a moment. ”

"It's okay, Zhang Guan seems to be ready, let's get ready to start!" After Director Ma finished speaking, he signaled that he was ready to give an order.

……

"Ready, ready to ......" "Bang!"

As the starting gun rang out, Zhang Guan began to run. The start of the 400-meter sprint is not as extreme as the 100-meter pursuit of reaction time, but the main purpose is to facilitate and quickly enter the rhythm after the start, so Zhang Guan's start is not as fast as the 100-meter.

However, Zhang Guan has already activated the "Incomplete Sprint Activation" skill, and he has gained 85% of the sprint effect in corners, and then begins to accelerate along the inside line of the track.

"We've made a lot of progress in cutting the inside line, but there's still a problem with the pace, the steps aren't big enough, the arm swing isn't enough. The pace is not bad, and the rhythm is stable. Director Ma began to comment in his heart.

In the 400m, each athlete has some differences in running style, which in turn leads to differences in technical characteristics. But in the first 100 meters after the run. Athletes tend to adjust the rhythm, if you quickly enter their own adapted rhythm of the game, so in the game, you can see that many big-name athletes did not take the lead in the initial corner, the main reason is that they are adjusting the rhythm and entering the game as soon as possible.

In the first 100 meters, because they have just started, the athletes have more physical strength, and if it is the top competition like the Olympic final, the time of the world's top athletes in the first 100 meters is about 11.50 seconds. If it takes less than 11 seconds, it means that you are running very hard, and the physical strength behind is likely to be insufficient, and if it takes more than 12 seconds, it means that you have saved your physical strength, and then the straight track is likely to sprint quickly. Of course, if there are some competitions at a lower level, the athletes will not do their best, and naturally they will not run such good numbers.

Although the level of domestic athletes is not high, the first 100 meters are generally around 12 seconds, and some athletes who like to run faster in the early stage can also run to 11.5 seconds.

Zhang Guan's sense of rhythm is the same as that of foreign athletes. The first 100 meters took between 11.5 seconds and 12 seconds, which can be said to be a decent performance.

Next, Zhang Guan is ready to enter the second 100 meters, which is also the straight area.

"The corners and straights have improved a lot. There are basically no flaws left. It's just that compared to the curve just now, the speed doesn't seem to change very much. Is this learning the running style of European and American runners? Director Ma continued to comment in his heart.

The second 100-meter is actually the least time-consuming stage for the entire 400-meter. Domestic athletes generally increase the pace of the first straight and increase the speed significantly, and many of them spend less than 11 seconds on this 100-meter stage.

European and American athletes also use the same running style. They can run under 10.5 seconds on this section. But there is also a large proportion of the world's most expensive athletes who do not choose to force acceleration in the second 100 meters, and they are more likely to adjust the stride amplitude to achieve higher speed.

The curve goes into the straight, and an adjustment is required. Zhang Guan was a weakness in this area before, but through practice, the process of cutting straights in corners has become very proficient. At the same time, he is still continuing the 85% dash effect of "incomplete dash activation", so it doesn't seem to have much improvement in speed.

The distance of this section of the straight was actually not very long, and Zhang Guan immediately turned into the corner, but when he entered the corner, the route was a little off, and he had to adjust the course again in the corner, cutting his body to the inside.

"This straight turn is not good, the route is off, you have to lose a lot of time!" Director Ma frowned.

When an athlete enters a corner at the end of the straight, they make adjustments in advance to ensure that they run along the inside of the corner as soon as they enter the corner. Zhang Guan is not very skilled in this technique, and when he adjusts in the corners, the loss of time is a small thing, mainly affecting the overall rhythm.

The third 100 meters is a threshold for domestic athletes, especially the acceleration of the straight road will put people's bodies in a state of exhaustion, and people's bodies will enter a state of slight hypoxia at this distance, and the speed will decrease. And the athlete in this stage is mainly to adjust and build up the strength in preparation for the final sprint. During this time, many domestic athletes will take more than 12 seconds.

There are also many athletes who choose to adjust their rhythm in advance when they are two-thirds of the way through the straight, so that they will be in better shape after entering the corner again, and they can also sprint early.

If you don't choose to accelerate on the first straight, but keep the frequency all the time, you'll be in much better shape heading into the second corner, and you'll have more options for the rest of the race.

Zhang Guan didn't choose to slow down at the second corner, but continued to move at a similar pace as before.

"It's not a common run for domestic athletes, the pace doesn't change in the first 200 meters, and it's the same when you go into the second corner, it's the kind of running that you're going to use Michael Johnson?" Director Ma was stunned for a moment, and then immediately remembered that the legendary American sprinter Michael Johnson seemed to use this running style.

The advantage of this style of running is that it can save energy in the early and middle stages, and then gain more speed in the later sprints; The downside is that it is possible to fall behind in the first half. In Michael Johnson's time, this style of running was very popular, and Michael Johnson also conquered the whole world with this style of running. Up to now, many American athletes are still using this running method, which can be regarded as a mainstream running method for European and American athletes.

The athletes who use this style of running are often some athletes with strong explosiveness. Although their rhythm is very evenly controlled in the early and middle stages, when they want to accelerate, they will instantly increase the speed, which will catch the opponent a little off guard.

"How did you do it? How to teach Zhang Guan to use this running method, this kind of running method is very demanding on the body, and it requires a perfect distribution of physical strength. Director Ma glanced at Yu Gui with some confusion, and then focused his attention on Zhang Guan.

"With this running method, the first sprint should start at about 250 meters! So what will Zhang Guan choose next? Sprint to the end? Can he control it? ”

Michael Johnson's run is at the 250m mark, which is almost halfway through the corner. Athletes change their pace and start their first sprint, and the world's top athletes, with this running method, take the third 100m almost 0.3 seconds slower than the second 100m.

This sprint will continue until the time when you are about to enter the straight, and then there will be two variations:

One way to run is to sprint straight down to the finish line, but after 250 meters of high-speed movement, even if the rhythm has been used to reduce physical exertion. It is also impossible for the vast majority of athletes to maintain a sprint of up to 150 meters, and often they have little strength by about 350 meters.

Another way to run is to finish the sprint before entering the straight, then quickly adjust the pace when you enter the straight, and then start the second sprint. Straight to the finish line. This method has a little more cushioning than the first method and can last longer and longer in the later straight sprints, but it is extremely physically demanding, as the first sprint of around 250 meters consumes some of the energy. Immediately after entering the straight, the second sprint is performed, and if the physical fitness is not up to the requirements, the explosive power will not come out, and it will not be able to rush at all. At the same time, it is also important to adjust quickly after the first sprint. This technique is not something that every athlete can master.

"It's about to reach 250 meters, so Zhang Guan should be ready to sprint, but I don't know if he wants to rush to the end, or choose a second sprint? The difficulty of the second sprint is too high, and he should choose to run to the end! But then again, Zhang Guan's rhythm in the first half of the game is very good, and if he chooses to sprint twice after entering the straight, it is not impossible. Director Ma stared at Zhang Guan tightly and began to look forward to Zhang Guan's next move.

In the 250 meters, Zhang Guan is still running at a constant pace according to the original rhythm.

At 260 meters, Zhang Guan also did not change the rhythm.

270 meters, too.

He's still in the same rhythm as he was at the start.

"What's going on? Zhang Guan: What is this going to do? It's almost the final straight, why don't you sprint? Is it because of the lack of physical strength? No, although the speed in front of him is not slow, there is no obvious change in the rhythm, and there must be reserves in physical strength. Director Ma couldn't understand what Zhang Guan was going to do, so Director Ma just stared at Zhang Guan and entered the straight.

"It's on the straight!"

At the same time, Zhang Guanmeng began to accelerate, and his speed increased in an instant.

"Hit the straight before you start sprinting! What the hell is this! It's too late. Is this the kind of running that was outdated decades ago? How did Lao then teach? There are progressive things that are not taught, and this outdated running method of the last century is taught? This kind of running has long been eliminated by the times! Director Ma began to blame Yu Dao again in his heart,

But then, he noticed that there seemed to be something different about Zhang Guan's speed on the track. Specifically, it seems to be a little too fast.

"How can the sprint speed be so fast! Is he really running 400 meters? Instead of running 200 meters? At this time, Director Ma had already grown his mouth in surprise.

Zhang Guan has not changed the rhythm until the moment he enters the straight, and then he has not started from there. It was also at this moment that he turned off the "Incomplete Sprint Activation" skill.

The 85% sprint effect and the 100% sprint effect seem to be only 15% different, but as the last part of the race, Zhang Guan doesn't have to worry about physical strength, don't worry about rhythm, all he has to do is to rush forward like running 100 meters!

At this time, Zhang Guan's physical fitness is still relatively abundant, and the uniform rhythm in front will save physical strength, and the incomplete sprint activation can only consume 50% of the sprint skills, that is to say, Zhang Guan's current physical energy consumption is definitely much less than that of athletes who run into the final straight under the same conditions.

Then, he showed a speed that did not belong in the 400-meter dash! (To be continued.) )

PS: The second more is delivered. Because I want to write 400 meters, I have a similar understanding of this project to the same level as everyone else, so when I wrote this episode, I went to the Internet to buy more than a dozen related papers to learn the knowledge of 400 meters, and some of the papers also analyzed the running methods and technical characteristics of individual world-class athletes. I don't know if anyone else has gone to the paper to write a web novel, but I'm trying to be as rigorous as possible! Do you still have a commuter pass? If you don't have a commuter pass, you can give a few referral tickets! Thank you.