There was a banging knock on the door.

"Lu Wei, Lu Wei, come out quickly! Someone is looking for you! ”

In a male athletes' dormitory at the Xinzhuang training base, a voice suddenly shouted.

"Who?"

Lu Wei, who was taking a shower in the bathroom, heard his roommate's shout, wrapped in a bath towel and hurriedly walked out.

As soon as he got out of the bathroom, Lu Wei saw that his roommate was entering the door with someone, and when he saw the person coming, he was stunned.

"You're Lu Wei, right?"

Su Zu looked at the young athlete in front of him who was a little stunned, and asked.

Lu Wei is not low, almost one meter and nine, and he looks very strong, and after being a little stunned at this time, he suddenly became a little excited.

"Ah, I am, Su Zu, no...... Brother Zu, is there something wrong with me? ”

Lu Wei is a newcomer who just entered the national youth team last year, and the main event is the men's 400m, which is one year younger than Su Zu. But no matter how newcomer he is, there are few people who don't know Su Zu now.

"You just came back from closed training in the United States, right?" Su Zu looked left and right at the dormitory, which was similar to him, but he was now in a single room, and this side was a double room.

"yes, Baylor University, see Michael Johnson." Lu Wei said with a smile that for athletes who practice 400 meters, Michael Johnson's status is like Jordan in basketball.

……

"Pneumothorax?"

This is what Su Zu learned from Lu Wei's mouth, and he and Yang Guangzong both went to Baylor University for closed training.

During the short training camp during the day, Su Zu felt that Yang Guangzong was a little abnormal, but the other party never said anything, so he had to ask a little question.

The situation was really worse than Su Zu thought, Yang Guangzong was sick.

Su Zu didn't know what kind of pneumothorax was, but he later found his team doctor Xu Zhikui to find out, and he could be regarded as having some understanding.

To put it simply, this is a cardiopulmonary dysfunction disease that will recur and be very troublesome. Predisposing factors are strenuous exercise, coughing, heavy lifting, and so on.

The main reason why Yang Guangzong got pneumothorax was that his coach asked him to change from 200 meters to 400 meters, which was caused by too much training intensity and physical discomfort.

Lu Wei is not particularly clear about the specific internal factors, but if you think about it from another angle, Su Zu can guess a few points.

What does Liu Renjia say about this coach, the level is there, but the utilitarianism is too heavy, which is also the norm for some coaches, who use athletes as a tool to achieve their personal ambitions.

He was excluded from the men's 4×100m coach list at the beginning, and Yang Guangzong's title of the first person in China in the 200m was taken away by Su Zu.

For Yang Guangzong personally, he is the semi-finalist of the men's 200-meter run at the Olympic Games, and the champion of the men's 4×100-meter relay team is still brilliant.

But for Liu Ren's family, this is a sudden loss of the champion coach, and the ranking in the team has also moved back several positions.

On this trip to the United States, Baylor University invited the legendary athlete to be "Forrest Gump" Michael Johnson, who casually analyzed that there is no problem with Yang Guangzong's running skills, but the cadence is slightly slower than that of athletes of one or two hundred meters, and if he runs 400 meters, he may be able to go further.

Then what else is there to say, Liu Renjia directly asked Yang Guangzong to start running 400 meters, and this training intensity is almost according to the training of the top 400 meters athletes, and then there is a problem.

Athletes are strong and competitive, this kind of thing is almost impossible to talk to others, with Su Zu's understanding of Yang Guangzong, although he is also smiling on weekdays, he will never show his fragile side in his bones.

Yang Guangzong's pneumothorax should have just appeared now, and Su Zu didn't know whether it was serious or not, but it was certain that if he continued like this, I was afraid that Yang Guangzong would really be abolished.

"We have to find a way to solve this matter!"

……

Athletics field, the scorching sun in June.

The sound of fast footsteps swept across the runway, and Su Zu suddenly kicked on the starting gear and began to accelerate rapidly.

Five high-speed cameras were set up at different corners on both sides of the runway, facing Su Zu on the runway, capturing his movements from the moment his feet left the starting gear.

"See? Slow down the video a little longer. ”

On the sidelines of the arena, Yu Liwei, Li Zhizhong, and Yuan Guohua all poked their heads and leaned in front of a small laptop.

On the computer, Su Zu's starting action was being slowed frame by frame. There are videos taken from the left and right sides and from the rear, and they are clearly visible in every moment when the muscles expand.

This is the research equipment that the Athletics Management Center began to equip each team with after various commercial sponsorships this year. In the past, there were only one or two of these things, where could they be used as rich as the current five.

"It's a little different." Yuan Guohua touched the stubble that was slightly raised on his chin, with a thoughtful expression.

"At the start, the difference between the soles of my feet and my toes was much bigger than I thought." Li Zhizhong watched the slow motion of the video also thoughtfully.

The three are all coaches of the track and field team, and some are athletes, so they are no strangers to these things, and when you analyze the details, there are many ways to do it.

The starting action of the sprinters looks the same, but in fact, there are differences in the details inside.

At this time, Su Zu tried two typical starting movements, and then recorded a video to analyze the advantages and disadvantages.

The first is that at the moment of starting, the feet are swinging from side to side, and only the inside of the forefoot is on the ground, which is an oblique pedal, which can reduce the time that the foot is in contact with the ground. (Tyson Gaye)

The second is to fold and swing straight forward, and the position of the foot on the ground is more than half a foot, and the time of contact with the ground is longer than the previous one. (Asafa Powell)

In the first six steps, the first takes 0.86 seconds and the second takes 0.99 seconds, which is very disadvantageous in a sprint event where the result is a hundredth of a second.

However, with 10 meters as the finish line, it was the second way to reach first. The second type of start may seem like it requires more ground touch, but the ground push is stronger, and the pace is bigger and more powerful. However, if it is in contact with the ground for too long, it requires better techniques to swing the leg forward in a short period of time. And it takes very good muscle strength to run like this.

The level of sprinting has reached the level of Suzu, who used to enter the world's top sequence, and every bit of technical optimization and improvement can bring better performance to more athletes on the field.

"Xiao Zhang, I'll let Su Zu run a few more groups, and we'll record some more materials."

Yu Liwei said to Zhang Pingqiu on the side, he was still a little excited about the achievements of several high-speed cameras, "This can be popularized to other athletes, and there is room for optimization according to everyone's habit level." ”

The analysis of this starting technique is more intuitive if the top athletes still have to run out, if the sprinters who are not at the level enough are likely to not be able to run such a gap, or the gap between the two starting styles is too big and there is no comparison. Of course, it is also related to Su Zu's personal sprinting habits, but it is more or less of a reference.

"That's right, in the past, when I had to analyze this thing, my own starting technique could be improved by at least 0.1 seconds." Coach Yuan Guohua nodded and said, he was a sprinter in the seventies and eighties, at that time, training and competition were buried in running, and many small skills were slowly figured out by himself, how could there be so many technical details of analysis.

"Coach Yu, Coach Li."

While a few people were talking, Zhang Pingqiu walked back with an embarrassed look.

"What's wrong?"

Zhang Pingqiu had a few days with Yu Liwei, and as soon as he saw his face, Yu Liwei guessed that something was wrong, and immediately asked.

"That...... Su Zu said it was boring, he didn't want to run. Zhang Pingqiu replied in a low voice.

"Huh! Our red lightning is a tantrum?! ”

Yu Liwei laughed and glanced at Li Zhizhong, who was sitting in front of the computer, although he was not Su Zu's head coach, but Su Zu was brought into the national team by him, and he was relatively familiar with it, and he has always been the most worry-free.

Even after the Athens Olympics, I didn't see how to expand, and I was still the most focused and hard-working, what is the situation today?

"Tantrums?" Li Zhizhong raised his head, also a little puzzled.

Su Zu has always controlled the amount of his training, and the intensity is very high, so he never has to worry about Li Zhizhong. But once the load is exceeded, he will say in a loud voice that he is already tired of muscles and does not practice, no one can say this, Li Zhizhong and he also have a tacit understanding in this regard.

But it's still rare to pick a child after only a few trips like today.

At this time, on the field, Su Zu began to circle around the track and field slowly after running in front of the camera several times in succession.

Having just tried two different starting positions, he felt he had room for improvement.

His attribute data can intuitively measure the current quality status of the body, as long as there are no major mistakes, the basic performance will not decline.

This is just like what is said in martial arts, when the internal force is cultivated to that stage, if you punch it out, you will have as much power as it should be, and it will not be discounted.

But if there are moves and stunts to match, it is completely different, and you can give full play to the current strength.

In the case of his sprints, the running technique, the pace of the running, the atmosphere of the scene and the excitement of the competitors will also become part of his live performance.

So when he was able to optimize his running technique, Su Zu never hesitated to learn. This is a process of learning moves, which can better give full play to his strength.

However, let's "slack off" today to see if we can succeed.

Sure enough, after Zhang Pingqiu went back, within two minutes, the three big coaches Yu Liwei, Li Zhizhong and Yuan Guohua all walked towards him.

"Su Zu, are you tired of the game and need to take a vacation? You can't slack off now, Coach Yuan still pointed out to you to lead the relay team. Yu Liwei walked over with a smile on his face and said.

"That's right, Xiao Su, is it not in good shape, or what's going on? You're the main force of the relay team. Yuan Guohua also asked with a smile.

Several coaches have watched Su Zu grow up step by step, and the current Su Zu is not an exaggeration to say a word about national treasures, and dozens of small groups and teams are revolving around him.

It's a young man who is less than twenty years old, who has achieved such great results, and occasionally cocks his tail, who can say that it is not?

None of the coaches present had brought a bunch of athletes, and it was normal for a young man of this age to suddenly have some emotions.

On the contrary, it was Li Zhizhong, who glanced at Su Zu with some suspicion and remained silent.

"Coach Yu, I just feel that running alone is boring and unmotivated." Su Zu said slowly.

"Oh?" This statement is a bit unexpected by Yu Liwei, but it's normal to think about it, he is competing with top sprinters, and if he can show his state, it will definitely be boring to run alone for test training.

"Okay, I'll find a few people for you to come over and accompany you to the test." Yu Liwei smiled and waved his hand, it is not easy to find someone in the track and field team to run and test together.

"I don't think it's hard to concentrate on training alone, so I want to find a few long-term training partners." Su Zu said seriously.

Many long-distance and sprinter athletes have their own training partners, such as Tyson Gaye and Wallace Spearmon, like Usain Bolt and John Blake, which stimulate and supervise each other, which is very conducive to the improvement of the athlete's level.

"Training partner?" Yu Liwei was slightly stunned, then laughed, and turned his head to look at Li Zhizhong, "Lao Li, your apprentice is looking for you to work." ”