Chapter 885 God has the skills to achieve success???
The so-called "credit card landing" technology is a type of landing technology.
Is there any technique for landing on the ground?
It's harmful, don't even mention it, it's really harmful.
It was proposed by American trainers in 2009. It began to fully evolve in the United States in 2012 and appeared in large numbers. Of course, there are also people who are born with it. For example, a certain "track and field holy body" is naturally close to this landing technique. Let's talk about it.
Just say whatever you want.
If you want to cry, make a scene, or hang yourself, please come here and queue up.
"The biggest goal is to dorsiflex the ankle joint before the foot lands. The biggest goal is to dorsiflex the ankle joint as soon as the foot lands on the ground. The gap between the heel and the track can only fit a credit card. Oh my god." Zhou Bing
As I read it, I felt bad all over.
Damn it, you can only put in one credit card when you land?
How thick is a credit card?
Isn’t this damn close to “flying close to the ground”?
How could a human being accomplish this?
When you first heard about it, you must have had this expression and thought. After all, how much is a credit card? Are you talking about science or fantasy?
Zhou Bing's words obviously made the people below also stunned, because this statement was really shocking.
Someone even took out a credit card from his wallet, gestured twice, and kept shaking his head.
It seems that this is too exaggerated.
But only Randy knows that this theory has indeed taken shape in the United States, but it has not yet become a complete system. However, it is said that the American track and field team has begun to try this latest landing technology.
Su Shen looked at Zhou Bing and the people below, smiled, and asked: "Why, do you think this is impossible? It can't be done?"
"No, Ah Tian, this credit card, no, it would be better if you put a Xinhua dictionary under it." Zhou Bing was also worried that Su Shen was too exaggerated and would not live up to it later. His prestige on Ersha Island
He was damaged, so he wanted to help Su Shen settle things.
After all, they are good brothers who came together.
Of course Su Shen understands the good intentions, but what needs to be said is: "The so-called credit card landing technique is to pre-stretch the calf muscles and elastic components of the connective tissue that support and push the human body forward, stimulating rapid traction in the neuromuscular system.
Tension reflex, to achieve the purpose of improving muscle rapid response strength and movement speed."
"The two major landing techniques at the moment are the forefoot support technique: during sprinting, after swinging the leg to complete the forward swing, the forefoot and toes are used to actively "scratch the ground" support method. And the full foot support technique: sprinting
During the run, after swinging the leg to complete the forward swing, use the support method of actively landing the entire foot." Su Shen patiently analyzed and compared the new technology for everyone below: "But what about the "credit card landing" technology? It is
A more advanced landing technology derived from the full-foot technology. During a sprint, the foot is lifted off the ground. After the calf is folded, the toes are hooked and the toes are actively swung forward and pressed down for support. At that moment, the ankle joint is pressed tightly, and the heel is in contact with the foot.
The ground is only a credit card away."
"After everyone understands the classification of these landing techniques, we can continue the topic below." Su Shen changed the ppt picture on the big screen, and three simplified diagrams of human landings appeared on it: "As can be seen from the image
In the full-foot technology, the ankle joint points are denser at the moment of landing. This reflects that in this technology, the foot stays on the ground for a long time. Although there is no cushioning in the vertical direction, the foot always decelerates from landing to pushing off and
For a long time, in the forefoot technique, although there are not as many landing ankle joint points as in the full foot technique. But at the moment of landing, when the forefoot forms front support, the stepping joint is in a relatively high position. Due to the speed during running,
Faster, the instantaneous speed and force of the foot landing are also relatively large, which causes the forefoot landing technique to inevitably cause the ankle joint to buffer downwards. When the maximum buffering is reached, it transitions to the back pedaling stage. In this process, the first step is made.
In the reciprocating process of moving downwards and forwards and upwards, the extent of the cushioning depends on the strength of the athlete's ankle joint."
"What about the 'credit card' landing technique? We can see that there is less cushioning after the foot lands. It can be seen by observing the distribution of ankle joint points. The distribution of points is not overly concentrated in one area, and there is no up and down buffering process.
.It is characterized by actively transitioning into the back-pedaling process after landing. Therefore, its buffer time is much lower than the other two landing techniques. This shows that the "credit card" landing can better reduce the buffer time. I think the reason is that the toe hook
From the start, the gastrocnemius and soleus muscles are lengthened in advance. At the moment of touching the ground, due to the stretch reflex, the forward rolling of the knee joint is accelerated, thus shortening the landing time."
"We can compare the landing angles and departure angles of the three modes under the ideal conditions created by the data model." Su Shen tapped the keyboard, and several sets of data for the three modes popped up, and said: "We can see
The forefoot landing technique has a ground angle of 66.379 and the ground clearance angle is 65.411. The forefoot landing technique has a ground angle of 68.423 and the ground clearance angle is 65.898. The 'credit card' landing technique has a ground angle of 75.189 and the ground clearance angle is 63.566."
"What do these three sets of data represent?" Su Shen said: "The landing angle of the 'credit card' landing technology is 75.189, which is the largest landing angle among the three technologies. So what does a large landing angle mean? A large landing angle means a landing distance
Relatively recently, the time to reach the maximum buffer is the shortest, so accordingly, the loss of speed is the smallest. The ground angle of the "credit card" landing technique is 63.566, which is also the smallest ground angle among the three landing techniques. This shows that
During the push-and-extension process, the "credit card" landing technique has a better forward center of gravity, a long acceleration distance of the center of mass in the horizontal direction, and obvious acceleration. Moreover, the center of mass fluctuates less up and down, and the speed loss is small. The other two techniques are worse.
For example, the ground angle and ground clearance angle of the full-foot technique are almost the same. The ground angle is small, and the ground angle of the forefoot technique is larger than that of the full-foot technique. In this technique, the forefoot has an obvious "ground-grabbing" action, but it is limited to the forefoot.
Compared with the 'credit card' landing technique, the forefoot touches the ground first, and the landing time is earlier than the 'credit card' landing technique. At this time, the position of the center of mass is relatively lagging behind, so compared with the 'credit card' landing technique, its landing angle is smaller.
In this way, a deceleration effect will also occur. This is because the landing angle is the angle between the line connecting the landing support point and the center of mass and the ground. The size of the landing angle directly affects the landing distance. At the moment of support before landing, the center of mass is vertical
The distance between the ground projection point and the support point.”
This chapter is not over yet, please click on the next page to continue reading! "In addition, let's take a look at the comparison of the ankle joint cushioning angles of the three groups of landing techniques." Su Shen clicked, and three more pop-up messages appeared on the big screen.
The group data are:
Technology Type Ankle Angle Buffer Amplitude When Ankle Angle Is Maximum Cushion When Landing
Full sole 122.514 92.685 29.856
Forefoot 109.717 90.027 19.690
Credit card 109.299 94.498 15.801
"Obviously, the angle of the ankle joint in the "Credit Card" landing has the smallest angle change when it reaches the maximum cushioning. It reduces the time spent on ankle joint cushioning, which is more conducive to the transition to the push-and-stretch stage and prepares for the push-and-stretch. Not only does it reduce
Buffering time is required, and it is conducive to horizontal acceleration. During sprinting, the "credit card" landing technology can make the ankle joint buffering range smaller. Its technical feature is to compress the ankle before landing, so that the ankle joint angle reaches the maximum before landing.
Minimum, thus reducing the range of motion of the ankle joint during the anterior stance phase.”
"It can be seen that the "credit card" landing technique is the best technique during the entire support process. Because the ankle angle is small when landing, it not only reduces the buffer time and reduces the ups and downs of the body's center of gravity, but the ankle angle is large when leaving the ground. It shows that pedaling
Full extension and a large angle indicate that the direction of kicking and stretching is horizontally forward, which reduces the upward ups and downs of the body, thereby reducing the ups and downs of the body's center of gravity. This technique is better than the other two techniques."
"Sprinting is a typical speed and strength event. The horizontal speed of the center of mass is an important factor affecting sprint performance. In sprint training, strive to obtain the maximum horizontal speed and reduce the vertical speed. The impact of the vertical speed of the center of mass on horizontal speed
Larger. Larger vertical speed causes the center of gravity to fluctuate too much, which affects the speed in the horizontal direction and causes speed loss in the horizontal direction. On the premise of ensuring that the forward horizontal speed is large enough, the vertical speed should be reduced.
Speed, creating favorable conditions for obtaining greater horizontal speed."
"In addition, the 'credit card' landing technique shows a high horizontal speed and a small vertical speed. It is more conducive to the horizontal acceleration of the center of mass. At the same time, it can also greatly enhance the rigidity of the ankle and the fascia strength. You said we don't train this,
What are you training for?"
…
"It's that simple. Everyone understands it." Su Shen said with a smile: "After completing this, I will have an optimized version later. You can also understand it as an advanced version. After learning this step,
Children's shoes, you can proceed to the next step of study."
Zhou Bing:......
Hu Kai:……
Zhang Peimeng:……
Yuan Guoqiang:......
Audience:……
Only Xie Zhengye, shaking his head a little, broke the deadlock and said, "It feels so difficult, Mr. Su, what should I do if I can't learn?"
Su Shen smiled warmly and innocently, and said, "You can't learn it, it's very simple."
"In the future, I'll just be a sparring partner and substitute for those who learn."
"Absolute fairness, justice and openness."
All the athletes in the field suddenly fell into a burst of mourning again.
ps: Technical writing is difficult, please support me a lot,┭┮﹏┭┮~~~~~~~~~~~~~~~!