After the Spring Festival, Zhang Guan immediately devoted himself to track and field training. Although it has been more than a year since he was away from the track and field field, Zhang Guan has also been engaged in sports for the past year, so his competitive state has not declined much.

On the training ground, Director Yu pressed the pause button on the stopwatch, and then immediately looked at the numbers on the stopwatch.

"Hand count 9.70 seconds! If you count the error of 0.24 seconds in manual timing, the speed of electronic timing is 9.94 seconds, which is still the world's top speed. And Zhang Guan obviously hasn't done his best! It seems that he has not participated in formal track and field training for more than a year, and Zhang Guan's condition is still very good. Director Yu let out a sigh of relief.

"What I'm most worried about is that Zhang Guan has not participated in track and field competitions this year, and he has not trained in track and field, and his competitive state will decline seriously, and even 100 meters can not even run in 10 seconds. By the time it comes to the Olympics, although you may not be able to break the world record, you should have no problem winning the gold medal. Director Yu thought silently.

Zhang Guan also walked over from behind the finish line and asked, "How are the results?" You alright! If you're not satisfied, I'll run again, faster! ”

"9.70 seconds, not bad." Director Yu showed Zhang Guan the numbers on the stopwatch, and then continued: "Let's go, let's test the 200-meter run again." ”

After that, Zhang Guan successively conducted the 200-meter dash, 400-meter dash, 800-meter middle run and 1500-meter middle run, and the test results showed that Zhang Guan's competitive form in track and field events did not decline, basically the same as at the end of 2006.

"Boy, you're in good shape! I thought you wouldn't be able to play in your current state. There's also a high-intensity training plan for you, which seems a bit redundant. Director Yu patted Zhang Guan's shoulder, then pointed in the direction of the sand pool, and then said, "Go ahead, Coach Li is still waiting from there to test your long jump!" ”

……

A few minutes later, Zhang Guan jumped 8.32 meters in the long jump.

"Okay, there is no regression at all, you can recover your state, and you will have no problem winning the gold medal in the Olympics!" Coach Li said happily.

"Coach rest assured, there will be no problem with the gold medal. Although I haven't competed in track and field for more than a year, I have never relaxed physically. Zhang Guan continued: "Coach Li, in my current state, there is no problem in learning the triple jump!" ”

"Triple jump?" Coach Li hesitated for a few seconds and asked softly, "Do you really want to learn the triple jump?" ”

Zhang Guan nodded solemnly: "I have asked Director Ma to help me sign up, the National Track and Field Championships in May, as long as I jump out of a standard A score, I will still go to the Olympic Games." ”

"Competing in the Olympics? Do you still want to win a medal in the triple jump? Coach Li asked uncertainly.

Zhang Guan shook his head: "It's not a medal, it's a gold medal!" Since it is to participate in the competition. There is no point in not winning the gold. ”

"Olympic gold medal in the triple jump?" Coach Li's tone was a little surprised, and when he saw Zhang Guan's serious expression, he immediately felt the persistence and desire for the gold medal in Zhang Guan's heart.

"Okay, you want to practice. I'll hand it over! Coach Li said.

The triple jump is different from different long jumps, the first jump of the triple jump is a one-legged jump, landing with the starting leg; The second jump is a stride jump, landing with a swinging leg; The third jump is a jump. Drop into the bunker with both feet. To put it simply, it can be seen as an ordinary long jump with a single foot jump and a stride jump.

The run-up is also very important for the triple jump, and the final result depends on the horizontal speed obtained during the run-up and the vertical speed generated by the take-off, but a good run-up is only the first step in the triple jump. The quality of each movement completed, the ability to maintain body balance, and the proportional distribution of the three jumps will also affect the final result.

For Zhang Guan, he was originally the world champion of the long jump, and he had learned the skills of stepping, so there was no difficulty in the technical movements of the triple jump that could not be mastered, so what Zhang Guan needed to learn most was some details.

"The triple jump is the same as the regular long jump, the faster the better. The faster the speed, the more kinetic energy can be obtained. However, the horizontal velocity obtained in the run-up is constantly decreasing in the process of triple jumping, so how to reduce the loss of horizontal velocity and obtain a reasonable vertical velocity is the main problem to be solved in the triple jump technique. ”

After Coach Li said this, he paused for a moment to let Zhang Guan digest what he had just said, and then hurriedly said: "The total speed loss rate of the world's best triple jumpers can be maintained below 40%, which also makes them have an advantage in the last two jumps, especially the last jump. The speed loss rate of our triple jumpers exceeds this number, which is also the gap between us and the world's top triple jumpers. ”

"There is a saying about the ratio of three jumps in the triple jump, and there has been an optimal ratio of three jumps several times, but in fact, it is not possible to arbitrarily stipulate that a certain jump rhythm is the most appropriate, because the athletes' physical conditions, quality levels, technical characteristics, psychological state and other aspects are very different, so each athlete must go through practice to be able to form a jump rhythm that is more suitable for his own characteristics. If you want to learn the triple jump well, you have to spend more time on it and practice your own jumping rhythm as early as possible. Coach Li continued: "In general, the triple jump is a product system composed of three distances composed of raw materials such as speed, strength, coordination, and flexibility. You can get the idea, right? ”

"I understand." Zhang Guan nodded and then asked: "You just said the ratio of three jumps, what is the proportion of three jumps for ordinary athletes?" ”

"There's really no exact number to rely on, but what is certain at the moment is that the farther an athlete jumps, the greater the proportion of his third jump, which is the problem of horizontal velocity loss that I just mentioned. The fact that they are able to jump far shows that their loss of horizontal speed will be smaller. So, you'd better focus on practice! Coach Li said.

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