ps, high-energy early warning - this chapter has a lot of professional science popularization and introduction, don't read if you don't like it!

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"It's been a week since the fitness work, Oliver, how are the players doing?" Klopp asked Oliver Bartlet, the head of the strength and conditioning staff sitting across from him. Pen "Fun" Pavilion www.biquge.info

"Most people are in a normal situation and have improved their fitness. In addition......"

"Huh?"

"There's one guy who's progressing really fast. Bartlett pulled one out of his fitness report and handed it to Klopp.

"Zhou Yi's?" Klopp saw the name on the report.

"Yes. Bartlett said. "I'll just say he's a talented player in terms of fitness. His previous physical performance was poor because he had never received formal professional physical training, and I bet his previous physical training was probably just a few laps around the football field. ”

In fact, Bartlett overestimated Zhou Yi too much, in the past, Zhou Yi would only go to the track to run two or three laps when the school had sports requirements, as long as he could mix up to meet the standards, he would not continue to torture himself so much, compared with boring running, he preferred to play football.

When Klopp was talking to Bartlet, he looked down at the report, which visually showed the changes in Zhou Yi's daily training in the form of charts.

Dortmund's physical training phase was an eye-opener for Zhou Yi because of professionalism.

Each player wears a special tight-fitting T-shirt with electrodes inside the T-shirt that are attached to the body to monitor the player's heart rate and pulse changes in real time and upload them to the physical fitness of the strength and conditioning coaching staff through wireless network. In this way, the physical data of each Dortmund player in the physical training stage can be easily archived and managed, so that the coach can grasp the player's situation in real time.

If a player's heart rhythm is found to be abnormal during training, the coach will immediately intervene and ask the player to reduce the intensity of the exercise until the heart rate returns to normal.

On the one hand, it ensures the safety of the players' training, and on the other hand, it also ensures the quality of training.

"We had him train at a maximum heart rate of more than 85 percent for 60 minutes, once a day, for seven days, and you can see that his maximum heart rate dropped five times. This is a remarkable change. You know, professional endurance athletes do the same, and it takes seven weeks to drop 10 times. And it took him only one week to drop five times, which shows that he has a high talent in endurance. Bartlet continued.

In addition, if he was asked to train at 60 to 90 percent of his maximum heart rate intensity for 20 minutes to an hour, five times in seven days, his cardiovascular function also improved significantly. This is reflected in the change in physical fitness. There's a very obvious and intuitive change, it's hard to see him slumped on the floor after training like he did on the first day, right?"

Klopp thought about it carefully, it was really like this, he trained three times a day, and after each training session in the last few days, Zhou Yi's performance was indeed better than before.

"It's really unexpected, this kid's thin figure didn't expect to contain such a huge amount of energy. Klopp shook his head and sighed.

"yes, I'm incredulous about that. Bartlett said. "Training such people gives me a sense of accomplishment. ”

Klopp put Zhou Yi's fitness report aside and looked at Bartlet: "But it's not enough, Oliver. Such results are not good enough. ”

This made Bartlett feel a little cold, and he asked in surprise, "It's not good enough, it's so much better than when he was in the youth team......

"The youth team is the youth team, we are the first team, the first team has the requirements of the first team, and that and the youth team are completely two worlds. ”

"But in terms of first-team players, if he continues to practice according to our current training plan, it will be enough to meet the first-team playing standards. ”

"Is it enough just to play?" Klopp asked with a laugh, "I don't think he would think that way himself, would he? I don't just want him to play in the first team. ”

"It's ......" Bartlett didn't expect Klopp to think so highly of such a youth team player.

He would not have been so surprised to know that Jurgen Klopp had personally flown to Barcelona to persuade Zhou Yi to join Dortmund.

Seeing that Bartlett was a little hesitant, Klopp turned his head and asked Dr. Marcus Braun, "Doctor, do you think Zhou Yi's body can withstand more exercise?"

Forty-two-year-old Dr. Marcus Braun, a specialist in sports medicine and head of the team doctor at Borussia Dortmund, leads his team to closely monitor the physical condition of the players every day, and if there is any discomfort, he immediately notifies the coaching staff to stop training or adjust the training plan to reduce the intensity and avoid injury.

So if you want to ask Zhou Yi if he can withstand more intense training, he must ask Dr. Braun.

Dr. Braun opened a form from his laptop and said to Klopp, "I've noticed an interesting phenomenon. At the beginning of training, his lactate threshold was not prominent in the whole team, which was in line with the impression he gave us that he was not a player who could not run, but as the training progressed, I found that his lactate threshold was not very prominent, but it did feel less tiring during training. The lactate threshold didn't increase significantly, but the exercise capacity increased, and I wondered why this was happening?"

The lactate threshold is used as a reference measure of a player's athletic ability.

When people exercise, due to the body's anaerobic metabolism, lactic acid will be produced in the blood and accumulate, lactic acid will make people's body muscles feel burning pain, which is why many people will have muscle soreness after exercise.

The lactate threshold refers to the starting point of a sharp increase in blood lactate concentration when the exercise intensity reaches a certain load. It is also a turning point for the body's metabolic energy supply mode to shift from aerobic metabolism to anaerobic metabolism.

A sharp increase in the concentration of lactate in the blood means that there is a large accumulation of lactate in the body, which means that the body's ability to break down lactate is reduced, and the rate of lactate production is much faster than the rate at which the body recovers, which will lead to a sharp increase in the concentration of lactate in the blood. At this time, the local tissues of the body will change. In order to avoid damage to muscle cells, the body's metabolic processes become slow, which is a sign of the body's self-protection and fatigue.

A high lactate threshold indicates that the starting point of aerobic to anaerobic conversion is high, which means that the body's aerobic ability is better, because the range of aerobic metabolism is extended. As a result, endurance athletes, such as those in long-distance running, long-distance swimming and cycling, have higher lactate thresholds than those in non-endurance events such as sprinting and sprint swimming.

But Zhou Yi's lactate threshold has not increased much, but his physical fitness has improved, which is indeed a bit strange.

"Then we tested his maximum oxygen intake and found that he had a high maximum oxygen intake, which was at the top of the team, and he was not lost to those players who were physically strong. I think that's why -- he has a pair of lungs that are so gifted that they can inhale more oxygen than anyone would normally seem, and they also have a very strong heart that can compress that oxygen into the blood to the rest of the body. In that respect, he is a truly talented player in terms of individual ability. ”

Maximum oxygen uptake is also an indicator of a person's ability to exercise, which refers to the maximum amount of oxygen that the human body can ingest, transport and use during exercise.

In general, the lactate threshold can be significantly increased with professional training. However, maximal oxygen uptake is limited by genetic factors and cannot be significantly increased by acquired training. So Dr. Braun said that Zhou Yi is a talented player, which is completely scientifically based - the maximum oxygen intake is heredized, isn't this talent?

"In addition, because of the problem of the method of testing lactate, we usually take blood to test lactate after the player's exercise, and at this time the blood lactate concentration of the players has begun to decline, so the lactate threshold detected does not represent the data of the player at the highest time. But I think this can show that Zhou Yi's physical recovery ability is very good, otherwise it would not be possible for the lactate threshold to be able to perform better and better under the condition that it is not too high. ”

Hearing Dr. Braun say this, Bartlett next to him also nodded: "Yes, after all, football does not need to maintain a rhythm of aerobic exercise for a long time, but constantly switches between aerobic and anaerobic, and the body's recovery ability is often more important than the lactate threshold." ”

"So through the monitoring and analysis of his body data, I think ...... Zhou Yi's excellent physical recovery ability really allows him to withstand more intense training. Dr. Braun finally gave his conclusion.

Klopp clapped his hands together: "Then let's see how much potential he still has to be squeezed!"

He thought of the scene when Zhou Yi said to himself that he wanted to get the guarantee of the first team.

Did that kid think that everything would be fine when he came to the first team?

Well, tell him now that that's just the beginning of a hellish journey! Want to get ahead? How can you not put in more effort than others?!

Being in the first team doesn't mean it's a good thing at all......

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In the hotel room at night, Zhou Yi turned on the computer and left a message to his parents on QQ, reporting his training and life in the recent period.

This is the first time he has landed on QQ since coming to Radeckersburg, and he didn't have much energy and didn't think about getting on QQ before.

Lately he feels like he's getting a little easier with the team's physical training, which is an improvement, so he's going to come up and give good news to his parents.

“...... Training for the first team was a lot harder than I thought, Dad. But I think I'm pretty good because I've persevered, and now I don't feel as hard as I had at the beginning. My fitness is much better than before, and now I go up to the fifth floor in one breath without panting and my legs are not weak......"

In fact, Zhou Yi has a very intuitive way to know his physical progress, but he can't tell his father about this thing, so he has to use this way of ridiculing advertising to tell his father his current physical condition.

In the virtual world, Zhou Yi pays attention to his attributes every day.

In addition to his perverted vision, his current highest stat is the short pass, which has reached seventy-nine, thanks to his non-stop training in the virtual world and reality.

Passing is what he is built on and of course he takes that very seriously. He spends more than half of his training sessions in the virtual system for passing exercises. Fortunately, the training methods of the virtual system are varied, which is quite interesting and challenging, so Zhou Yi does not feel bored when he practices - what Zhou Yi is most afraid of is boring things...... So in the past, he was very uninterested in physical training, and this is also the reason, he couldn't stand it if he ran and ran unchanged.

Later, after coming to Dortmund, he found that he couldn't train physically, and he couldn't even play in the youth team games, let alone the first-team games, so Zhou Yi gritted his teeth and insisted on accepting boring physical training.

But his persistence paid off.

In addition to the best value of short passes, it is physical strength.

Zhou Yi's current physical strength is seventy-one, which is almost the physical fitness of a qualified first-team player, of course, can he play a full ninety minutes in every game, at least not to be qualified to play in the first team.

Fitness is no longer an important factor in slowing things down.

And Zhou Yi saw that before starting the first-team training, his physical fitness was actually sixty-four, and in just one week, the value increased by seven points, indicating that the effect of this physical training was very significant.

Zhou Yi looked at this progress and was a little strange - when did he become so talented in terms of physical fitness? He always thought that he was the kind of player with poor endurance and speed, but a good brain, he didn't rely on his body, he relied on his brain, but he didn't expect to find that his endurance was far better than he imagined, and Zhou Yi had a feeling of "Did I have the wrong talent before".

However, good fitness is always a good thing, because his style of play requires a lot of movement, and good fitness will keep him from being either substituted or disappearing in the final stages of the game.

In addition to physical fitness, Zhou Yi has also made good progress in strength.

Do you still remember that Zhou Yi just had this system and saw what his strength data was?

Poor eleven.

And now his strength value is forty-nine, which is almost half of his full value. Although he is still not a very strong player, he is still much better than he was knocked down in the first hit. Moreover, Zhou Yi did not invest as much time in strength training as he did in physical training.

In other aspects, crosses are not Zhou Yi's strong point, only forty, and the shots are only fifty-seven because they didn't deliberately train, fifty-one for headers, and forty-six for volleys.

Judging from the offensive data, when Zhou Yi transformed to play as an organizational midfielder, his foundation as a striker was still there. It's just that I didn't deliberately train this ability.

Defensively, Zhou Yi's statistics are miserable, with 10 man markings, 15 steals, 14 tackles, and 9 interceptions.

Zhou Yi was not good at defense, and when he was in the youth team, his defense was at most "eye defense" and "stream of consciousness defense".

He had never practiced defending and had never thought about moving on the defensive side.

In terms of personal skills, Zhou Yi's dribbling is decent, and he is fifty. He's not the kind of fancy dribbling king, and he rarely has practiced with the ball in one person in a game, and his dribbling may only be used to get rid of the first defender and allow him to pass the ball.

In terms of arc, Zhou Yi's data is fifty-one, which is also decent, not a player like Beckham who has a particularly good arc, but it is not very bad.

In terms of free kick accuracy, Zhou Yi is only forty-one, because he has never practiced free kicks, he has no idea about this himself, and the team did not let him take free kicks.

Long passing is Zhou Yi's weakness, only forty-seven, just looking at the data may be fine, but compared with seventy-nine's short pass, it is too far behind.

The possession statistic was 59 last week, which is not bad. However, as long as Zhou Yi's ball control is dragged down by lack of strength, because in a football game, no matter how good the ball control skills are, the opponent will squeeze you crooked with a reasonable collision, it cannot be regarded as "controlling the ball".

In terms of physical attributes, Zhou Yi's shooting power is fifty-two, which is decent.

Bouncing fifty, just as ordinary.

The physical strength has been said before, seventy-one, not bad.

Forty-nine in strength and forty-seven in long-range shots. It's all so-so.

Acceleration and sprint speed Zhou Yi's progress is very slow, because the quality of speed is not how much can be improved by acquired training, and it is difficult to improve if there is no talent. Fortunately, Zhou Yi's muscle fibers have a slight upper hand in the speed muscles, so Zhou Yi's speed is not too unbearable. But after so much training, the increase is also very slow.

The acceleration is sixty-one, and the sprint speed is sixty, which is only four points higher than when Zhou Yi just got the system. Judging from this increase, Zhou Yi will never become a speed player like "alien" Ronaldo and Kaka in his life.

However, there must be gains if you lose, Zhou Yi is not good in terms of speed, but in terms of flexibility, balance and reaction, Zhou Yi is not bad.

Seventy flexible, sixty-eight reactive, sixty-nine balanced. This may also be related to Zhou Yi's low stature and lack of strength. Players who are too strong will definitely suffer in terms of flexible ratings.

In terms of other attributes, the tilting Zhou Yi is forty-one, which is much higher than his initial one, but the psychological quality has changed a lot, and the data is actually not accurate. And the inclination does not only refer to the inclination in defense, but also refers to the degree of enthusiasm in the attack, Zhou Yi has no inclination in the defense at all, but after coming to Dortmund, the participation in the attack is becoming more and more active.

The field of vision is still ninety-nine, and there is no change.

And Zhou Yi has forty-seven penalty kicks, and he is not the kind of player that any team will prioritize when taking a penalty.

In the offensive position, Zhou Yi has the attribute of sixty-six, which is not bad.

In terms of total score, Zhou Yi has risen to sixty-eight.

As an eighteen-year-old player, this attribute is quite reasonable.

However, Zhou Yi is a serious player, so he can't just look at the comprehensive score. Fu, it is difficult to ascend. Fortunately, Zhou Yi's muscle fibers have a slight upper hand in the speed muscles, so Zhou Yi's speed is not too unbearable. But after so much training, the increase is also very slow.

The acceleration is sixty-one, and the sprint speed is sixty, which is only four points higher than when Zhou Yi just got the system. Judging from this increase, Zhou Yi will never become a speed player like "alien" Ronaldo and Kaka in his life.

However, there must be gains if you lose, Zhou Yi is not good in terms of speed, but in terms of flexibility, balance and reaction, Zhou Yi is not bad.

Seventy flexible, sixty-eight reactive, sixty-nine balanced. This may also be related to Zhou Yi's low stature and lack of strength. Players who are too strong will definitely suffer in terms of flexible ratings.

In terms of other attributes, the tilting Zhou Yi is forty-one, which is much higher than his initial one, but the psychological quality has changed a lot, and the data is actually not accurate. And the inclination does not only refer to the inclination in defense, but also refers to the degree of enthusiasm in the attack, Zhou Yi has no inclination in the defense at all, but after coming to Dortmund, the participation in the attack is becoming more and more active.

The field of vision is still ninety-nine, and there is no change.

And Zhou Yi has forty-seven penalty kicks, and he is not the kind of player that any team will prioritize when taking a penalty.

In the offensive position, Zhou Yi has the attribute of sixty-six, which is not bad.

In terms of total score, Zhou Yi has risen to sixty-eight.

As an eighteen-year-old player, this attribute is quite reasonable.

However, Zhou Yi is a serious player, so he can't just look at the comprehensive score.