Bang —————
The competition begins.
The fastest reaction is... Liang Jiahong.
He was in the third lane, and it seemed to be at the end, but the shot started might feel pressureless, and it felt very good.
At this stage, he was highly focused, his brain issued instructions quickly, his nerves reacted extremely quickly, and his muscles responded instantly, producing powerful explosive power.
It's only 0.125s.
The muscles in the leg contract rapidly at the moment of starting, and the contraction speed of muscle fibers may reach 5-7 meters per second. The powerful force pushes the body forward, and the force generated by the force can reach 3-4 times the weight. His weight is 85 kg, and the force of the force at this moment may reach between 225 kg and 300 kg.
Let his body start quickly.
Leave the starter.
Is it the fastest startup?
However, before you have been happy for a second, you will be taught to be a human being.
Because of the other three people.
It's all...begins with a bent arm.
That's right.
Zhou Bing, Xie Zhengye, Su Shen.
All three are.
Start from the fourth path and all the way to the sixth path.
All three of them were bent.
But Liang Jiahong was in the third path and felt that it was not that clear, but in the eyes of others it was...
A wonder.
Xie Zhengye quickly understood why Su Shen strongly recommended that he learn to start with a bent arm.
The straight line project is very obvious, but in fact, for 200 meters...
It's also of great significance.
Starting at 200 meters is originally meant to enter the curve. According to the formula of centripetal force F = m v2/r. Where F is the centripetal force, m is mass, v is speed, and r is the curve radius. When running on a curve for 200 meters, you need to tilt your body inward to balance the centrifugal force.
The bent arm movement can allow athletes to adjust their body posture more flexibly, so that the center of gravity of their body is moderately offset to the inside.
Increase centripetal force.
Reduce the possibility of deviating from the track due to excessive centrifugal force, so as to maintain a good running trajectory when curve starts.
That is to say, when the curve starts, the bent arm start helps the athlete better adapt to the centrifugal force of the curve.
Then this way.
It feels completely different from before.
In the past, when the straight arm starts, the center of gravity of the body was relatively inflexible when starting on a curve. Due to the extension of the arm and the overall moment of inertia of the body, it is difficult for athletes to quickly adjust the center of gravity of the body when starting on a curve to tilt the center of gravity into the inward to balance the centrifugal force.
This may cause you to spend more time adjusting to the curve when entering the curve, and may even temporarily deviate from the inside of the runway due to centrifugal force.
Not to mention that according to the centripetal force formula, the center of gravity of the body is relatively outside in the straight arm state, which is not conducive to quickly generating sufficient centripetal force to fight centrifugal force. In the early stage of corner acceleration after starting, it may affect the stability of the running trajectory.
The starting of the bent arm allows athletes to adjust their body's center of gravity more quickly when starting a curve. The bent arm reduces the moment of inertia, and athletes can easily tilt their body's center of gravity inward to increase centripetal force.
This rapid adjustment of the body's center of gravity helps athletes better fit the curve starting line and reduce the interference of centrifugal force on starting acceleration.
So from the start of starting, Xie Zhengye can start with the bent arm swing and the feeling of body tilting...
Make the body in a posture that is conducive to balance centrifugal force at the moment of starting the curve.
This is something that is not available for straight-arm starting.
It can better create good conditions for subsequent curve acceleration.
No wonder Mr. Su ran so hard for 200 meters before, and this time I finally got it...
Then this time!
I won't lose!
Zhou Bing is similar here. He felt that in terms of power transmission of curved start, the efficiency of straight arm starting is relatively low compared to curved arm starting.
Moreover, when the arm is straight, the angle between the contraction direction of the arm muscles and the curve tangent direction, that is, the main direction of the athlete's forward acceleration, is large, resulting in part of the force dispersed when the leg pushes through the body to the forward direction.
This problem is not something you can change if you want to change it.
Zhou Bing tried it.
It is basically in the straight arm activation state.
Not comprehensive.
No matter how you do it, you will lose sight of one thing.
This makes the athlete's forward power output not concentrated enough during the acceleration process after the corner is started.
It is not conducive to rapid speed improvement in the early stages of the curve.
Especially for the future like myself, I started the "difficult households".
It is even more impossible to play to your strengths and avoid your weaknesses.
There is no way to quickly rush through this stage like Su Shen.
Furthermore, the coordination of your body is not as good as that of Su Shen and others on the curve, which makes the body need additional strength after starting with straight arms to correct the trend of deviating from the tangent direction of the track due to dispersion of power.
This will also consume energy to a certain extent, affecting the acceleration effect of curve start.
Let yourself start up if you are not rich.
It's even worse.
But I don't have any solution at all.
It hurts the brain.
Now it's OK.
Once the bent arm starts and performs, the bent arm makes the angle between the muscle contraction direction and the tangent direction of the curved tangent.
Power transmission is more direct and efficient.
This allows the force of the leg to push the ground better translated into a joint force forward and inner side of the curve through the swing of the curve.
Help yourself to speed up quickly along the tangent direction when corners start.
It is also beneficial for the body to tilt inward to balance centrifugal force.
After Zhou Bing started, he felt that the 0-10-meter stage was started. The bent arm start could enable him to obtain the tangential speed required for the curve faster.
He immediately adjusted his body and combined with the tilting movement to make the acceleration process smoother.
This is what the spectators below look like, and all of them think they have read it wrong.
Is this Xie Zhengye and Zhou Bing?
Is this still the 200-meter curve for us Asians???
In the past, except for Su Shen.
Even Xie Zhengye, who adopted the Jamaican running method, was not as strong as the West African blacks because of his startup ability. He always looked at it and almost made a difference.
This is because first, when the straight arm starts, it is difficult to control the direction of the curve when the arm swings.
Xie Zhengye and others are not as good as West African blacks. Because their arm stretching advantage, the swing amplitude is relatively small and not enough, it is even more difficult to accurately control the direction of the swing of the arms to assist the body in advancing along the inside of the curve during the curve.
Especially for 200-meter curve starting, where there are high requirements for starting direction and trajectory accuracy, the straight arm swing of Chinese athletes may make it difficult for athletes to accurately grasp the position of their bodies on the curve at the moment of starting.
The disadvantage of arm span is magnified here.
But now after the bent arm starts, the swing of the arm when the bent arm starts is more conducive to the control of the curve direction. The swing of the bent arm is relatively small and more controllable. Athletes can accurately adjust the direction and strength of the arm swing according to the curve arc and their own speed.
The disadvantage of wingspan has been greatly reduced.
For example, when Xie Zhengye starts the curve, by controlling the swing of the curved arm, the right arm appropriately increases the inward swinging force for counterclockwise curves.
The left arm appropriately controls the force of swinging outwards, which can guide the body more accurately along the inside of the curve.
The lateral component forces generated by the swing of the straight arm on the curve are relatively difficult to control, and excessive outward or inward force is prone to occur, which leads to unnecessary swings in the curve start stage, affecting the starting speed and direction stability problems. Now, the problem has also been suddenly reduced because it has been replaced with a curved arm...
Xie Zhengye’s own feeling is that this precise arm swing direction control can help athletes better adapt to the curvature changes of the curve during the curve start stage.
It can also maintain the correct trajectory of the body on the curve, reducing the speed loss and risk of foul due to direction deviation.
It's really a word - awesome.
Two words - awesome.
With this move, facing the starting disadvantages of West African black people, a big part can be solved.
No wonder I asked this question before.
Ningde Hail doesn't care at all.
Let yourself practice well.
Don't think so much.
Now it looks...
snort.
Ning Ma must have known it a long time ago.
After the bent arm start is completed.
You can start these straight arms and start the problem.
It's easy to solve.
So at that time.
There is indeed no need to waste time thinking about it.
Do basic training well.
That's enough.
Zhou Bing also ran well.
It is difficult to maintain body balance after starting straight arm when starting on the curve, and now it is no longer available. After the starting movement begins, since the arm stretching is no longer so much, the body is subjected to the dual effects of centrifugal force and acceleration force on the curve, making it easier to quickly adjust the posture to maintain balance.
I saw Zhou Bing, who was usually very ordinary and inconspicuous, suddenly it seemed like he had changed someone else.
It can be seen that the naked eye can adjust the body posture more flexibly.
By fine-tuning the swing of the curved arm, the inclination angle of the body, etc., we can effectively deal with the centrifugal force and acceleration force on the curve.
After cutting into the curve, the bent arm start can keep the body balanced in dynamic changes, providing a guarantee for Zhou Bing to stabilize and accelerate on the curve.
Whether it is Xie Zhengye or Zhou Bing.
All of them are physical balance brought by the start of the curved arm, which allows them to focus more on speed improvement and curve trajectory control.
Plus reduce energy loss and velocity fluctuations caused by equilibrium problems.
This start is not as good as before, and it is completely different.
Then there are ghosts.
"So fast?"
"Is this still Zhou Bing?"
"Xie Xiaogui, why is it so scary?"
Even the first team members looked at it and felt that they had seen the wrong person.
These two people are no longer what they think.
Instead, it seems to have become...
The appearance of Su Shen.
No wonder Xie Zhengye's shot was full of confidence.
He feels the feelings.
I have already started the front and is not as good as Su Shen.
If Su Shen had not gained a lot of advantages in front of him.
Indeed, it is difficult to kill Xie Zhengye, a top-notch fast-dead athlete in history.
Mr. Su.
I'm sorry this time.
Your whip at my love...
It's about to end.
you……
I……
Grass……???
Xie Zhengye was happily thinking about the scene after he defeated Su Shen.
Next second.
Right in front of you.
The red figure not only did not shrink.
Instead...
It's widened.
He even quickly approached the most outspoken Zhou Bing in front.
There is only one possibility that such a situation will occur...
That is when Su Shen started.
Faster.
Even more fierce.
Stronger.
At this moment.
Xie Zhengye looked at the back that he didn't pull in as he imagined.
I just felt that the back seemed to have a head growing behind, and Su Shen's unique warm and innocent smile was revealed, and said:
Progress.
But it's not enough.
The whip of love.
We have to continue.
Can't stop yet.
It feels like - you have read Journey to the West.
Xie Zhengye thought he had achieved the right result, and he fell into a thousand miles apart.
I just feel like I can visit here everywhere.
Then when I looked back, I realized...
I still didn't jump out of Su Shen's Five Fingers Mountain.
It's still in someone's palm.
collapse.
Really collapsed.
Chapter completed!