Almighty Coach

Philip lowered his head and thought carefully for a long time, and then said: "Coach Li, you are right, I should try to participate in the competition of normal people. This is a very good attempt. But I am now I ’m afraid I ca n’t even pass the qualifying. "

"Not afraid, but sure, you definitely can't pass the qualifying." Li Dai nodded honestly, and then said: "At present, you can run to about 11 seconds 50 in the 100-meter sprint event, this is already you This level is a world record, but in normal competition, this is only the level of high school students. Even in Asia, where the track and field are the least developed, the lowest threshold for participating in intercontinental competitions should be within 10 seconds 50, while the United States The level of track and field far exceeds that of Asia. If you want to stand out in the track and field competition in the United States, the speed of 100 meters should be close to 10 seconds. "

"I can't run to 10 seconds at all, or even less than 11 seconds. I don't have feet. This is the factor of the presence of the guest officer. I can't pass." Philip shook his head.

"Don't worry, listen to me to continue." Li Dai motioned to Philip to be quiet, and then continued: "We just said that 100 meters, and on the 200 meters project, your score is much better, you can run within 22 seconds , This result even has the opportunity to board the Asian Games. "

"Actually, my country has a rating standard for athletes. For a 100-meter sprint, it can be rated as a first-class athlete after 10 seconds and 93 seconds. For a 200-meter dash, if you want to become a first-class athlete, you need to run for 22 seconds. 02 . At your current level, you ca n’t reach the standard of a first-class athlete in a 100-meter sprint event, but you can achieve it at 200 meters. Do you know what this means? "

"It means that I am better at 200 meters, which means that my advantage in the 200 meters project will be greater!" Philip said back.

"That's right, do you know why this is?" Li Dai didn't wait for Philip to answer, but first revealed the answer himself: "First, it's a reason I told you before, you lack Achilles tendon, this It affects your explosiveness at the start, so your start will be much slower than other people. This process will probably occupy a distance of 10 meters. At this 10 meters, you must lag behind other athletes. "

"In addition, under normal circumstances, when a sprinter starts running, his body will look forward, and this unbalanced state will remain around 30 meters. During this process, all the strength of the legs will be transformed into The forward driving force can achieve continuous acceleration. While you are wearing a prosthesis, your prosthesis is worn on the knee, so your knee cannot be bent very flexibly to maintain balance. You must maintain the balance of the body. Keep your body upright as much as possible, so you won't get this part of the forward thrust of your body at this 30 meters. "

"At the same time, because of wearing a prosthetic leg, your legs are actually in a state of 40 centimeters above the ground. You have a certain distance from the ground, which means that you cannot perceive the condition of the runway in the first place. Observe that after you start running, it will take you about 30 meters to find your own running rhythm. "

"The 30m is your disadvantage. If it is placed on a 100m dash, 30m will occupy almost one third of the distance, and if it is a 200m dash, 30m is just a little more than one seventh, from this point In other words, the shorter the distance of the race, the greater the disadvantage brought to you by the start. On the contrary, the longer the distance of the race, the smaller the disadvantage brought to you by the start. For example, if you run for five kilometers Or 10,000 meters, everyone is standing and running, and your disadvantage in starting is approaching zero! "

"Next, let's talk about your leopard blade prosthesis." Li Dai pointed to the pair of black prostheses next to it, and then said: "It is elastic, right? Although carbon fiber is very hard, it is harder than steel. But this does not mean that it has no elasticity. As far as I know, carbon fiber is originally a kind of residue with high strength, low density and high elasticity. "

Philip didn't hide, but nodded, admitting that the pair of carbon fiber prostheses can provide additional flexibility.

Li Dai then said: "When you are running, the elasticity provided by the prosthesis will give you extra power. This is like a spring shoe in the playground. When the distance you run is longer, the The greater the gain in elasticity of the prosthesis, this is why you will have an advantage over 200 meters over 200 meters. "

"I understand what you mean. Do you want me to focus on the 200-meter sprint? I can currently run within 22 seconds. This result should allow me to break out of certain qualifiers for track and field competitions. It is possible to play with normal people! "Philip said.

"No, I don't mean that." Li Dai shook his head before asking. "Do you want to hear my advice?"

"Of course, you are my coach, and I need your advice!" Philip promised.

"I hope you practice 400 meters." Li Dai said.

Philip was shocked. He never wanted to run 400 meters.

Strictly calculated, 400 meters can't even be considered as a sprint. At that time, the inclusion of 400 meters in sprints had a lot of controversy. Many people felt that the technical characteristics of 400 meters are more inclined to middle distance running, but only the competition It ’s time to part ways.

From a physiological point of view, 100 meters and 200 meters are both anaerobic exercise. Athletes run 100 meters without breathing, and they run in one breath, while running 200 meters is only one or two breaths. This process is almost The aerobic metabolism of sugar is almost not used to provide energy. The energy stored in the body and the energy provided by the cell's breakdown of creatine phosphate are enough to ensure that athletes run a 100-meter or 200-meter run, but this process will produce Metabolites such as pyruvate and lactic acid make people feel tired.

And 400 meters is called the combination of aerobic exercise and anaerobic exercise, his sports nature is completely different from 100 meters and 200 meters. The energy stored in the body and the decomposition of creatine phosphate are not enough to support a person running 400 meters, so before the final sprint, 400-meter athletes must perform aerobic exercise, relying on the aerobic metabolism of sugar to provide energy At the end of the sprint, anaerobic exercise is required.

But the human body is not a machine, there can be no such precise instantaneous adjustment, it does not mean that you want aerobic exercise, aerobic exercise, if you want anaerobic exercise, anaerobic exercise, when athletes are running 400 meters, the body is actually It is in a state of hypoxia, which means that the body's exercise organs and internal organs must squeeze out the energy provided by aerobic exercise and anaerobic exercise.

Pyruvate and lactic acid produced by anaerobic exercise can bring side effects to the human body, such as fatigue, muscle soreness, rapid breathing, arrhythmia, etc., and acidosis can also occur in severe cases. In the course of 100 meters or 200 meters, the process of anaerobic exercise will not last too long, and the athletes will feel these side effects after the game. During the 400 meters, the athlete will run halfway through, the body will Feeling of pyruvic acid and lactic acid, in this case, continue to run at high speed, the physical fitness of athletes is extremely demanding, so 400 meters is also recognized as the most difficult item in the track.

Li Dai is not worried about whether Philip is qualified for the 400-meter project, because the detector has long told him that the highest Philip talent is 400 meters, which means that his physical talent is very suitable for sports under hypoxia.

Philip was hesitant. If there was no proper reason, he obviously did not plan to practice 400 meters, because he also knew that 400 meters was too difficult.

"Coach Li, can you tell me why you want me to practice 400 meters? Do you think I can do it?" Philip asked.

"Of course, I have a reasonable basis for making this judgment." Li Dai said with a finger extended: "First of all, I have already said that when I was just now, the starting process is a disadvantage for you, The longer the distance of the race, the less disadvantage you will get from starting. If it is 100 meters or 200 meters, the starting reaction time is calculated in one-thousandth of a second, and it is a huge advantage to be 0.1 seconds faster. The 400-meter start has no such delicate requirements, and the gap of tenths of a second is easier to make up for from the track. "

Li Dai stretched out his second finger, and then said, "Second, as I said just now, your prosthesis is flexible. The longer the distance of the game, the greater your gain from the elasticity of the prosthesis. From this point See, the benefits of running 400 meters are obviously greater than 100 meters and 200 meters. "

"Third, I have to take a physiological point of view. Your legs are partially cut off, so your muscles are also less than normal people, so that when you run, your muscles produce pyruvic acid and lactic acid. Fewer normal people, your body's response to anaerobic exercise will be lighter, the muscles are not sore, and the muscles are not easy to feel tired. This is very beneficial in the second half. Normal players run 400 meters At that time, the speed in the front 200 meters will be faster, and the back 200 meters will slow down due to fatigue. In your words, the front 200 meters may not be slower than others. The back 200 meters will definitely be faster than others. "

Philip nodded and then asked, "As I said, I run a longer distance, such as 800 meters or 1500 meters, wouldn't it be more advantageous?"

"Can your legs support such a long distance?" Li Dai pointed to the place where he was massaging, and then said: "800 meters is too long, it takes more than a minute to run, that kind of long-term high-intensity exercise Wearing a prosthetic leg will be a burden. You will definitely feel pain where you wear the prosthetic leg. In that state, it is difficult for you to run the full distance. So even the Paralympic Games, the T4 level competition is only 400 meters , Longer distances, such as 800 meters, 1500 meters, or 5000 meters, are for T1 and T5 players. "

In the Paralympic Games classification, 1 represents visual impairment and 5 represents the wheelchair group, that is to say, disabled athletes running long distances are either having eye problems or rolling in the wheelchair. For T4 athletes with disabilities, the pain and injury caused by wearing prosthetic limbs make it impossible for them to finish the long distance race, and the Paralympic Games will not set up T4 middle-distance running.

In fact, in the middle and long distance competition, the level of competition of T1 disabled people is not inferior to that of normal people. T1 athletes are just not good at eyes, but their legs and feet are flexible. It has happened in history that the top four in the 1500 meters of the Olympic Games are not as good as the top four in the T1 level of 1500 meters in the Paralympic Games.

...

Running 400 meters is indeed a good choice for Philip. His physical disadvantage will be smaller compared to normal people with sound limbs.

Philip began training at 400 meters. At the same time, Li Dai also posted a job advertisement and posted information on the Internet. He planned to invite people.

Philip has started training 24/7. Li Dai's main thoughts are also on Philip, and he has no time to take care of 11 other disabled athletes. At the same time, because of Philip's success, some people have started to come to the door to consult about physical training. Li Dai alone is obviously too busy to work.

Recruiting coaches has become a necessity, but Li Dai first chose to recruit part-time coaches.

The labor cost in the United States is too high.

Many people compare prices with the United States and think that American goods are cheap, food is cheap, beef is cheap, clothes are cheap, cars are cheap, and so on. The things going to the country are even more expensive than those in the United States. There are, of course, different reasons for the taxation system, but if you are only satisfied with the food and clothing level, living in the United States is indeed more cost-effective.

People's vision is always to meet the current needs. People in the food and clothing stage will naturally focus on the food and clothing. The people who solve the food and clothing will begin to think about how to eat better and wear more beautifully.

But people live in the world, not just to eat a full stomach, but food and clothing are only basic needs. When the economic income reaches a certain level, they always need some needs other than food and clothing, quality of life, and spiritual satisfaction. Such as cutting a beautiful hairstyle, being a beauty aromatherapy spa, listening to an opera, watching a game, etc., and the cost of dealing with the service industry, the United States is definitely more than ten times more expensive than the domestic, besides, others have finished serving you, except In addition to the book money, tips are also indispensable.

If Li Dai hires a formal employee, he will be required to pay him a salary and buy him various insurances. For Li Dai at this stage, although he can't afford to pay, it is also a huge expense. And if you only ask for a part-time job, the overhead will be much less, and the trouble of buying insurance is avoided.

Li Dai doesn't need the ability of a part-time coach. Anyway, the training plan is compiled by Li Dai. As long as the part-time coach can follow the training plan, it is enough. In the United States, a country with a wide range of sports, www.readwn.com ~, there should be a lot of people who can do this kind of work.

At the same time, if part-time employment is employed, it will be more flexible in terms of employment. If part-time employment is not good, it will be fired directly. If a regular employee is fired, the process will be more troublesome and will involve many legal provisions on labor security.

Of course, if there is really a high-level coach, and the asking price is more appropriate, Li Dai would not mind sending a formal contract. The cost of human resources in the United States is expensive, but if it is a real talent, it can create more extra value, and it is definitely only profitable if hired.

...

The day after the job advertisement was posted, a red-haired middle-aged man walked into Li Dai's training center.

Li Dai looked at each other. This man was in his early thirties, with red-brown curly hair, a pair of dark circles under his big eyes, and a lot of freckles around his nose, typical of European and American whites. The man's dress is very formal, suits, ties and shoes are readily available, and a briefcase is carried in his hand.

Li Dai felt sensitively that this person should not have come for physical training, but he still stepped forward and asked, "Hello, can I help you?"

"Sorry, I'm not here to do physical training. I saw your address on the part-time recruitment website." The man with curly red hair said.

"You are here to apply?" Li Dai's expression was a little surprised. The man was not strong, and he didn't look like a sports person.

"No, I did not apply for it." The other party said, took out a business card from his arms and handed it to Li Dai.

The business card is very simple, there is nothing about the work unit, title, telephone, only one name:

"George Steven!"

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