The importance of explosiveness to the 100-meter dash is self-evident. Pen & Fun & Pavilion www.biquge.info Li Dai's explosive aura, although it can only increase the explosive power by 10%, but for a sport that can be completed within ten seconds of the limit time, the increase of 10% explosive power can already be regarded as an astronomical amount.

It is precisely because of the existence of this explosive aura that Li Dai will give the students a test before the start of training in the morning, and then record the results at that time; After the evening training, take another test and record the results. A comparison of the morning and evening results shows the results of a day's training session.

Although Li Dai doesn't know how much this 10% increase in explosiveness will ultimately show in terms of speed, Li Dai can be sure that the improvement in performance brought by the explosive power aura can be very obvious on the electronic timer.

However, Chen Haiyang's father did not have much hope, because he knew that physical training was originally an accumulation of time, and there was no shortcut to this, and it was impossible to have a quick result in one or two days. It's just a month, and now it's only a day's worth of training, so what is the "training effect" at all.

"So it's mysterious, it's just a day's training time, what effect can it have, is it possible to be half a second faster? This young coach probably wants to show himself too much, and he also wants to keep the students too much, since he uses this kind of stupid trick, isn't he worried that after a day of training, the physical strength has been consumed so much, maybe the results will drop compared to the morning! Chen Haiyang's father said secretly in his heart.

Training will consume a lot of physical strength, and the results will not be as good as when the physical strength is abundant, which Li Dai can certainly imagine, so Li Dai let the students rest for half an hour. Half an hour's rest is certainly not enough for high-level professional athletes, but for beginners, half an hour's rest is enough to save up the stamina for a 100-meter sprint.

At this time, Chen Haiyang stood on the starting line again, and Chen Haiyang's father also stood at the finish line again and held the stopwatch.

Li Dai pulled the trigger of the starting pistol, and Chen Haiyang rushed out in response and quickly began to pick up speed.

"I feel like it's getting faster!" Chen Haiyang could feel it while running, and the speed was a little faster than in the morning.

"1, 2, 3, 4......" Li Dai in the distance did not have a timer in his hand, he counted silently in his heart, at this time he also felt a little nervous, very worried that Chen Haiyang's grades were not satisfactory, in that case, nine times out of ten he would not be able to keep this student.

"Whoosh!"

Chen Haiyang's father only felt a figure speeding past him, and he immediately pressed the pause button on the electronic timer.

"I don't know how the ocean did this time." Chen Haiyang's father still had some expectations for his son, and he stared at the electronic timer in his hand, his expression suddenly frozen.

"How is this possible? 12.39 seconds, am I mistaken? Chen Haiyang's father blinked vigorously, and when he looked closely, the electronic timer showed 12.39 seconds.

"When my son did the test before, he didn't run under 12.80 seconds at the fastest, but now he runs 12.39 seconds, which is more than half a second faster than in the morning! Did I press early? Chen Haiyang's father recalled carefully and confirmed that he did not press early.

"Could it be that the electronic timer is broken? It's also impossible, if the timer is broken, it will only slow down, not faster. Chen Haiyang's father raised his head suddenly, looked at his son, and said secretly in his heart: "Could it be that this is the progress he has made in today's training?" ”

At this time, Li Dai had already walked over quickly, only to hear him ask, "How are the results?" ”

"12.39 seconds." Chen Haiyang's father replied honestly, and his words couldn't help but reveal a sense of unconfidence.

"I remember in the morning, Chen Haiyang's time was 13.03 seconds, an improvement of 0.64 seconds, and the effect of today's training was very good." Although such a large improvement is the effect of the explosive aura, Li Dai did not hesitate to take the credit on himself, and then he continued: "I remember that the standard for national third-level athletes is 12.40 seconds, and now Chen Haiyang has exceeded this data, and if he participates in the test now, he can also get a national third-level athlete certificate." ”

The qualification of a national level 3 athlete basically has no effect, at most it is an affirmation of personal ability, but for the average beginner, the national level 3 athlete is also a very encouraging achievement.

Chen Haiyang's father hesitated for a few seconds, and then suddenly said, "Coach Li, I want to let Haiyang test again, do you think it's okay?" ”

Li Dai slightly, he knew that Chen Haiyang's father didn't believe in this result and felt that it was a coincidence, so he made this request, and Li Dai would definitely not refuse, he said: "No problem, but let Chen Haiyang rest for ten minutes first, continuous tests are also easy to cause strain on the curve of sexy lines." I tested a few other students first. ”

Li Dai looked at the form in his hand and shouted at the training ground: "Xu Qingliang, do a warm-up exercise and prepare for the test!" ”

Xu Qingliang came alone in the morning, and there were no parents to pick him up after school in the afternoon, so Li Dai could only let him do the test by himself and tell his parents about the results when he went back.

Xu Qingliang's figure scurried past the finish line, Li Dai pressed the electronic timer, he glanced at the numbers on it, and said: "12.42 seconds, the result is very good." Your morning time was 12.10 seconds, and in today's training, you're 0.68 seconds better! Don't forget to tell your parents about your progress today. ”

Immediately afterwards, Li Dai turned around and called the name of another classmate: "Lu Yanyan, it's your turn." ”

……

Chen Haiyang rested for more than ten minutes, and then stood on the starting line again.

"All in place, ready to ......" Li Dai raised the starting pistol, and with a gunshot, Chen Haiyang rushed out of the starting line again.

In the second test, Chen Haiyang was also psychologically relaxed, and his state was better than before, but there was only ten minutes between the first test, and Chen Haiyang's physical strength had not fully recovered, so he ran a time of 12.51 seconds, 0.12 seconds slower than the first test.

Although the speed was slower than the first time, this still surprised Chen Haiyang's father, and he ran unexpectedly twice in a row, and Chen Haiyang's father had to believe that Chen Haiyang had really made great progress.

"To be able to improve his performance so much in one day, this Coach Li is really a god! If I hadn't seen it with my own eyes, if I hadn't come to time it myself, I wouldn't have believed it! Chen Haiyang's father looked at Li Dai's eyes have become different, ten minutes ago, he still felt that Li Dai was playing tricks, but now he knows that this Coach Li in front of him is really capable.

"I think even the coach of the sports school does not have such a good training level, this training effect is simply against the sky, no wonder this Coach Li dares to promise to refund if he does not meet the standard, it turns out that there are really two brushes, maybe the child should really be handed over to this Coach Li." Chen Haiyang's father thought of this, and he had already made a decision in his heart.

……

Li Dai waited for the last student to leave, packed up his things, and locked the door to the warehouse.

"I don't know how many of these 13 students will be left in the end." Li Dai looked at the straight road in front of him, and couldn't help but feel a little confused in his heart.

"When you go back, call these parents to confirm!" Li Dai muttered to himself.