The Su God of the Reopening of the Sports Arena

Chapter 2012 Is this still the person who runs 200 meters?

Chapter 2012: Is this... still the person who can run 200 meters?

"Aye, the starting moment of the 100-meter race contains the key techniques that determine the outcome. There is a huge difference between starting with bent arms and starting with straight arms. There are complex and profound scientific principles behind this."

"From a biomechanical point of view, the bent-arm start is a highly optimized starting method. When you use the bent-arm start, the bending angle of your arms is determined based on the optimal mechanical model of muscle force. The short moment arm structure formed by the bent arms is like a set of efficient levers installed on both sides of the body. When starting, the force generated by muscle contraction can be transmitted to the body with higher efficiency through this short lever, driving the body forward."

"From the perspective of muscle kinematics, in this posture, the contraction direction of the deltoid, biceps and triceps, the main muscles involved in the arm swing, is more consistent with the direction of the arm swing, reducing the decomposition of force during the transmission process. At the same time, due to the short moment arm, the muscles only need a smaller contraction amplitude to produce a larger angular velocity, thereby making the arm swing faster. This series of muscle synergy allows the arm swing force to burst out in an instant, providing a strong initial acceleration for the start."

"Looking at the transfer of the body's center of gravity, the bent-arm start allows the center of gravity to move forward more quickly and stably. During the start, the movement trajectory of the body's center of gravity is one of the key factors that determine the efficiency of speed improvement. The bent-arm start shortens the arm swing radius, allowing the body to obtain acceleration along a vector direction closer to the horizontal direction at the moment of starting, which is like paving a high-speed channel for the movement of the center of gravity. This center of gravity movement method not only reduces unnecessary energy loss in the vertical direction, but also allows the body to enter a high-speed running posture more quickly, just like a rocket quickly adjusts its posture at the beginning of launch to obtain the best flight trajectory."

"In sharp contrast is the straight-arm start. When starting with a straight arm, the arms are straightened, resulting in an excessively long moment arm. According to the torque principle, under the same muscle force, the longer the moment arm, the greater the torque generated, but this requires more energy to overcome the resistance torque, and the efficiency of force transmission will be significantly reduced. In this case, the shoulder muscles need to expend more energy to start the arm swing, and during the arm swing, the force will be dispersed on the long arms and cannot be concentrated like the bent arms. From the perspective of motion trajectory, when starting with a straight arm, the arm swing will cause the body's center of gravity to fluctuate greatly in the vertical direction. This is because the straight arm swing action will generate an upward component force, resulting in unnecessary displacement of the center of gravity in the up and down directions, increasing energy loss. This waste of energy is like the frequent braking and starting of a car while driving, which seriously affects the increase in starting speed."

"So the bent-arm start movement pattern is more conducive to the rapid coordination of the nervous system. Since the rhythm of muscle contraction and relaxation in the bent-arm movement is relatively simple and efficient, the nervous system can more accurately control the order and strength of muscle force. However, due to the complexity of the straight-arm start movement and the indirect transmission of force, the nervous system needs more time and energy to adjust when controlling the coordinated work of muscles, which will lead to obvious disadvantages at the start moment when every second counts."

"In short, there are significant differences between bent-arm start and straight-arm start in multiple scientific dimensions, such as biomechanics, muscle kinematics, body center of gravity transfer, and neuromuscular control. These differences determine that in the key link of the 100-meter start, the bent-arm start has an incomparable advantage and is the inevitable choice for those pursuing extreme speed."

"Of course... this is the prerequisite."

“You need to be able to really master that starting technique.”

"It is very difficult to master this technique thoroughly, which is why there are not many black players who can master this technique. The technical difficulty is quite complicated."

"So if you can't master this technology, it's better not to use it to the point of proficiency."

This is what Su Shen said when he explained the concept of bent-arm start to him. In fact, at that time, Su Shen was already looking forward to when he could master this technique.

With this younger body now.

A more scientific body.

Build a better body.

A healthier body.

Want to see if he can do it.

Unexpectedly, I am not even 20 years old yet.

He had already transformed this technique into actual combat, which was more than 10 years earlier than in his previous life.

well.

let me see.

Have you really mastered it or are you just pretending to master it?

Aye.

Su Shen looked forward.

Stare at the start position.

His eyes were like torches.

boom--------

Xie Zhengye started.

Located on the front of the upper arm, it is a key muscle for bent-arm start.

When starting to run, the biceps brachii contracts strongly, pulling the forearm to bend inward, allowing the arm to complete the arm flexion movement, providing traction force for the arm to start the body forward.

The moment Xie Zhengye started running, he quickly contracted his biceps to bend his arms quickly, preparing for the subsequent acceleration movement.

Secondly, it is located deep in the biceps. It works with the biceps to strengthen the elbow flexion. During the start, it assists the biceps to complete the arm flexion, increases the strength and stability of the arm flexion, ensures that the arm can bend quickly and powerfully, and provides better support for the body's start.

Then there is the brachioradialis, located on the outside of the forearm, which is also one of the main flexors of the forearm. Its contraction helps the forearm bend better, and when starting, it cooperates with the biceps and brachialis to control the bending angle and speed of the forearm, making the arm movement more coordinated and efficient.

Then the anterior deltoid muscle connects the shoulder and upper arm. When the arm is bent and the start is started, it will contract moderately to help stabilize the shoulder joint and assist the arm to lift forward and upward. This not only helps the arm to enter the bent state faster, but also increases the amplitude and strength of the arm swing, providing additional power for the body's acceleration.

Next is the supraspinatus muscle, which is located above the shoulder and is mainly responsible for the abduction and lifting of the shoulder joint. When starting with the arms bent, the contraction of the supraspinatus muscle can help maintain the stability of the shoulder joint, ensuring that the shoulder joint will not shake or dislocate during the process of raising and bending the arm, so that the arm movement can proceed smoothly.

In conjunction with other forearm muscles, such as the pronator teres, wrist flexors, and finger flexors, although they play a relatively small role in the bent-arm start, they also participate in the action. The contraction of these muscles can help adjust the hand posture, so that the palm can better grip the starting block, increase the friction between the hand and the starting block, and provide better support for the body's forward start.

Eventually they come together and activate the core.

Includes the muscles of the abdomen, back, and pelvic floor.

When starting with bent arms, the core muscles will contract to keep the body stable, effectively transferring the power of the legs to the upper body, so that the power of the upper and lower body can work better together.

Also, the contraction of the abdominal muscles can help maintain the body's upright posture and prevent the body from falling forward when starting; the contraction of the back muscles can help keep the body straight and increase the body's explosive power.

then.

A full flexed-arm start.

It became.

Get out of the starting line.

Compared with the straight-arm start, the latissimus dorsi is connected from the lower back to the upper arm. When starting, it contracts to pull the arm backward and downward, while the pectoralis major contracts to pull the arm forward and downward. These two muscles work together to make the arm swing back and forth in a straight state. In this swinging mode, the force generated by muscle contraction needs to be transmitted through a longer lever arm, resulting in the dispersion of force. In order to generate sufficient swing torque, the muscle needs to contract more significantly and consume more energy.

just now……

The bent-arm start mainly relies on the contraction of flexor muscles such as the biceps, brachialis and brachioradialis to complete the arm bending action. When these muscles contract, the direction of force is more concentrated on the bending of the arm, allowing the arm to swing quickly and powerfully.

Moreover, because the arm is bent, the muscle contraction distance is relatively short to generate sufficient angular velocity to drive the body forward. The deltoid anterior bundle and supraspinatus muscles of the shoulder mainly play the role of assisting in stabilizing the shoulder joint and moderately pulling the arm upward and forward, making the transmission of force more direct and efficient.

Take a step forward.

Xie Zhengye could feel that the contraction of his abdominal rectus muscles, external oblique muscles, and back erector spinae muscles could maintain the normal physiological curvature of the spine, effectively transmit the power generated by the legs upward, and ensure the stability of the upper body during the rapid swing of the arms, so that the body could accelerate in a relatively stable direction. Compared with the straight-arm start, the contraction of the abdominal rectus muscles can prevent the body from leaning forward excessively, allowing the body's center of gravity to shift more smoothly in the horizontal direction.

Similar to the straight-arm start, the arm swinging action makes the body's center of gravity more likely to fluctuate up and down, and the core muscles need to expend more energy to control this instability.

Now it is greatly reduced.

For example, when the arms swing backward, the body's center of gravity may move backward and upward. At this time, the abdominal muscles need to contract more strongly to prevent the body from leaning back. At the same time, the back muscles must work together to ensure the overall balance of the body.

I feel much more comfortable now.

As the audience watched, they saw Xie Zhengye start in an instant, showing his advantage in the bent-arm start.

His arms were bent at precise angles, his elbows pressed tight to his sides like powerful pistons.

When swinging your arms, the force explodes rapidly from the shoulders along the muscle chain. The short radius swing allows the force to be transmitted more directly, quickly driving the body's center of gravity forward.

This is completely different from the ordinary straight-arm start, in which the force arm is long, the force is dispersed and transmitted slowly, and the starting explosive power is weak.

This problem has now been largely resolved.

Xie Zhengye's leg muscles exploded with power and he pushed off the ground fiercely. His stride reached its optimum at the moment of starting. Every step seemed to be pushed forward in an explosion. The force generated by the friction between the soles of his shoes and the track pushed him like an arrow.

Bang, bang, bang, bang, bang, bang, bang.

After ten meters, you enter the acceleration zone.

Xie Zhengye continued to accelerate, and the rhythm of his arm swings became faster, like a high-frequency drum beat.

At this time, his head remains stable and his neck muscles are as firm as steel cables, ensuring the balance of the head and avoiding energy loss.

The muscles in his shoulders rise and fall rhythmically, like undulating mountains, continuously supplying strength to his arms. His spine maintains the best physiological curvature, like a fully drawn bow, providing stable support and elastic potential energy for the body.

The leg extension movement is more powerful, the hip thrust movement is perfectly coordinated, the thigh drives the calf to swing forward quickly, the calf muscles show amazing explosive power between contraction and relaxation, the step frequency is faster, and each step is precisely on the point of power explosion.

The force generated by the swing of his arms and the force of his legs pushing off the ground form a combined force to propel him forward. His ankles show good rigidity when pushing off the ground, effectively transferring the force to the ground while maintaining stability to avoid energy loss.

In order to cooperate with the explosive movement of bent arms, Xie Zhengye's feet dug into the ground quickly and powerfully, and each contact with the ground could obtain the maximum reaction force. As the acceleration became faster and faster, Xie Zhengye's body leaned forward slightly to reduce the impact of air resistance on speed, just like a cannonball fired from a gun, whizzing through the air.

Gradually raise your head.

Run on the way.

Xie Zhengye's speed further improved and entered a new stage.

At this time, his core muscles played a key role, acting like a stable central hub, integrating the strength of the upper and lower body.

His stride reached a new balance at this stage, ensuring speed without over-consuming physical energy.

At this stage, his body coordination has reached its peak, and the coordination of various joints and muscle groups is like a carefully choreographed dance. The knee flexion and extension of the legs are smooth and natural, and the strength of the calf's backward and forward swing is just right.

Simply put,

The running action is enjoyable to watch.

higher.

It looks better.

Bang!
Extremely fast burst.

Xie Zhengye entered the core area of mid-running, and his speed continued to rise like a rocket. It can be seen that his technical movements are more delicate and precise than last year. The influence of the bent-arm start allows his body angle and swing amplitude to be fine-tuned according to the speed to adapt to a higher rhythm.

The leg muscles still maintain excellent elasticity even under high-intensity running, and can generate powerful explosive power with every push off the ground.

Bang, bang, bang, bang, bang.

Xie Zhengye began to prepare for the final sprint.

The body posture is slightly adjusted to increase the range of hip thrust and further increase the stride length.

His leg muscles have demonstrated super endurance and explosive power after years of training, and every time he pushes off the ground it seems to leave a deep mark on the ground.

The last twenty meters.

Xie Zhengye was getting closer and closer to the finish line, but his speed did not slow down at all. His body was like a high-speed machine, and every part was working frantically for the final sprint.

This is the benefit for a 200m runner to run 100m.

His leg muscles have entered a super-intensive working state, and the impact of lactic acid accumulation on him is much smaller than that of ordinary 100-meter athletes.

Xie Zhengye didn't slow down too much.

It's like the natural rate of decay of the human body.

For him, the impact is smaller.

He's taking big strides here.

Straight across the finish line.

Other people's feelings.

It seems.

It was as if not much was released in the end.

He walked straight across the finish line in front of him.

"No way."

"Why didn't he seem to hold back much strength at the end? He was just running smoothly. Is he running so fast?"

"Maybe I'm too excited?"