The Su God of the Reopening of the Sports Arena

Chapter 2426 More Than Just Sprinting! A Devastating Weapon Affecting Track and Field Events Has Eme

Chapter 2426 More Than Just Sprinting! A Devastating Weapon Affecting Track and Field Events Has Emerged!
Optimized distribution of foot mass!
It's the final step in a rapid burst of speed.

The posture of the foot directly affects the distribution of mass in the foot, and thus the moment of inertia. The forward swing recovery technique requires the foot to maintain continuous dorsiflexion throughout the entire swing.

Toes hooked towards the calves,

By bringing the mass of the foot closer to the lower leg, the rotation axis is rotated, reducing the moment of inertia.

Biomechanical calculations show that dorsiflexion of the foot can shorten the radius of foot rotation by 10%-15%.

The moment of inertia decreases by 8%-10%.

This can increase the angular velocity of the thigh by 5%-8%.

This is something that can only be achieved by using the forward swing recovery technique during the run. Without the forward swing recovery technique, athletes are prone to problems such as foot drop and toes pointing towards the ground, leading to an increased foot rotation radius, increased moment of inertia, and decreased thigh angular velocity. Su Shen's experimental data shows that when the foot drops, the athlete's swing period is extended by 0.01-0.02 seconds.

Step frequency decreased by 3-4 steps/minute.

The speed decay rate increases by 2%-3%.

This is why all the athletes who have achieved the highest potential in the past have developed this problem.

Because there has been no breakthrough in core technologies.

The existing technical system makes it difficult for athletes with exceptional potential to advance further here.

Unfortunately, in the original timeline, Ralphman passed away before he could fully develop this theory.

It will take decades before this technological system is truly perfected.

Fortunately.

Su Shen is someone who came from decades later.

Fortunately.

The answer lies within him.

The optimized distribution of foot mass has been completed.

Now we can begin the real discussion of this match—

The forward swing reduction technique allows the hip joint to continuously output high power!
As the core power hub of the human musculoskeletal system, the hip joint's ability to continuously output high power directly determines the upper limit of performance in running and jumping sports.

The forward swing reset technology achieves efficient conversion of muscle elastic potential energy and seamless connection of the power chain through a closed-loop mechanism of "swing-braking-reset-force generation," solving the core pain points of power output interruption and excessive energy loss in traditional technologies.

By combining three dimensions—sports biomechanics, muscle physiological mechanisms, and kinetic chain synergy principles—with three-dimensional motion capture data and electromyography analysis results, we can systematically demonstrate the scientific validity of the forward swing reduction technique as the only path for continuous high-power output of the hip joint.

At least with Ralph Mann.

That's my opinion.

He believes this is the only way, under certain conditions, for the hip joint to maintain high power output.

Otherwise, it wouldn't be so important.

In explosive sports such as sprinting and long jump, the power output of the hip joint exhibits a "pulse-like continuous characteristic"—

The generation, transmission and release of power must be completed within a gait cycle of 0.1-0.2 seconds.

And quickly transition to the next round of development.

Traditional push-off techniques suffer from an energy gap between power generation and cushioning, making it difficult to achieve continuous power accumulation and causing athletes to experience power decay at high speeds.

The front swing reset technique, which has been widely used since the Bolt era, has completely reshaped the sprint technique system.

Its core innovation lies in upgrading hip joint movement from "single push-off force" to a "swing-return-launch" closed-loop system.

The swing leg gains initial velocity through a forward swing dominated by the iliopsoas muscle, stores energy through eccentric braking by the gluteus maximus, and then completes the force output posture reconstruction through rapid hip joint reset, ultimately achieving uninterrupted power output.

Studies in sports biomechanics have confirmed that athletes using this technology can achieve a peak hip power of 12.8 W/kg.

Furthermore, the power maintenance time is more than 40% longer than that of traditional technologies.

Ralph Mann believes.

The forward swing recovery technique refers to a standardized movement pattern in the gait cycle in which the swing leg starts from the extreme position of the backward swing and completes the three stages of forward swing acceleration, braking positioning, and recovery connection with the hip joint as the axis.

Its essence is to achieve efficient energy flow through the optimization of joint movement trajectory.

This technology comprises four key nodes:
1. Backswing critical point: When the swinging leg swings back to a 15° angle with the ground, the hamstrings complete the concentric contraction and the iliopsoas begins to pre-activate.

2. Acceleration point of forward swing: When the hip joint flexion angle reaches 30°, the rectus femoris and iliopsoas muscles work together to generate force, and the angular velocity of the swinging leg exceeds 5 rad/s.

3. Braking and resetting point: When the swinging leg swings forward to form a 70° angle with the torso, the gluteus maximus initiates eccentric braking, and the hip joint completes deceleration within 0.03 seconds.

4. Point of connection for force generation: After the repositioning movement, the hip joint maintains a 10° forward tilt angle, and the gluteus medius and vastus lateralis muscles are activated simultaneously to prepare for force generation.

3D motion capture data shows—

The error in the forward swing recovery action of elite sprinters can be controlled within 3°.

The deviation in movement of ordinary athletes often exceeds 15°.

This directly resulted in a 35% decrease in power output.

Therefore, it is necessary to make corrections based on the kinematic characteristics and biomechanical advantages of the joint.

The forward swing reset technique optimizes the hip joint motion trajectory, achieving three-dimensional coordination of "angular velocity-torque-power".

At the kinematic level, its core advantages are reflected in two dimensions:
The range of angle change has been optimized.

The hip flexion angle during the forward swing phase increases from 15° to 85°, and during the backward swing phase it decreases from 85° to 10°. The angle change within the complete cycle reaches 150°, which is 25% higher than the traditional technique, providing more displacement space for muscle contraction.

Linearization of motion trajectory.

By adopting a composite trajectory of "arc forward swing + linear reset", the deviation angle between the resultant force direction of the hip joint and the direction of movement is controlled within 5°, and the energy transmission efficiency is increased from 68% of the traditional technology to 89%.

At the kinetic level, this technology converts 72% of the swing leg's kinetic energy into muscle elastic potential energy through a braking torque of 4.6 times the body weight generated by the eccentric braking of the gluteus maximus. This conversion efficiency far exceeds the 38% of traditional technology.

This "braking energy storage" mechanism is similar to the compression process of a spring, providing sufficient energy reserves for subsequent force exertion.

Therefore, the forward swing reset technology is the core mechanism for achieving continuous high power output.

This is Ralph Mann's theory.

But how do you do it?

He did not leave behind a specific solution.

But this is the problem.

Su Shen has provided the answer here.

Extreme speed phase.

Break through speed limits by "efficiently releasing tendon elastic potential energy + optimizing the rigidity of the supporting leg"!

The principle is that during the extreme speed phase, the swing and extension speeds of the lower limbs reach their peak, and the energy consumption of the muscles actively exerting force increases significantly. It is necessary to rely on the "passive release" of the elastic potential energy of the tendons to reduce the burden on the muscles. At the same time, the supporting leg needs to withstand an impact load of 4-5 times the body weight. If the joint stiffness is insufficient, it will lead to a decrease in the efficiency of ground reaction force transmission, and it will be unable to generate effective propulsion.

Therefore, this stage requires reducing muscle consumption through "efficient release of tendon elastic potential energy" and improving the efficiency of ground reaction force utilization through "optimization of supporting leg rigidity" to break through the speed limit.

In other words, the tendon's elastic potential energy is released efficiently, in conjunction with the energy storage of the Achilles tendon and quadriceps tendon...

They proceeded almost simultaneously.

Su Shen had done the calculations.

When the supporting leg lands during the high-speed phase, the Achilles tendon and quadriceps tendon need to stretch rapidly to store energy, completing the "energy storage-release" conversion within 0.01-0.02 seconds after landing.

In the specific technique, the ankle joint quickly cushions the impact the moment the forefoot of the supporting leg touches the ground.

The Achilles tendon is stretched by about 10-15mm and stores about 50-60J of elastic potential energy.

At the same time, the knee joint is slightly flexed, and during the stretching and extension phase of the quadriceps tendon, the elastic potential energy of the tendon is released rapidly.

In conjunction with the active exertion of muscles, it forms a combined propulsive force of "active muscle force + elastic tendon force".

At this point, the release of tendon elastic potential energy can contribute 30%-40% of the total propulsive force, reducing the burden of active muscle exertion by 35%, thereby avoiding a decrease in stride frequency due to muscle fatigue.

In extremely elite athletes, the elastic potential energy release efficiency of the Achilles tendon during the peak speed phase can reach 85%-90%, or even more.

Ordinary athletes only achieve 65%-75%, which is the key factor that allows them to break through speed limits.

At this moment, if the rigidity of the supporting leg is optimized, the stiffness of the ankle-knee-hip joints will be matched.

Because the support legs need to form an "ultra-rigid transmission chain" during the high-speed phase, it is necessary to ensure the efficient transmission of ground reaction force.

The specific stiffness setting is as follows:
Ankle stiffness 200-220 N/mm.

It is 10%-15% higher than the mid-race run.

Knee joint stiffness 240-260 N/mm
It is 9%-11% higher than the mid-race run.

The hip joint stiffness is 220-240 N/mm, which is 10% higher than that of running in the middle.

It's just the most basic data.

This stiffness combination allows the vertical component of the ground reaction force to be quickly converted into horizontal propulsion force, avoiding energy loss caused by joint "micro-collapse".

In specific technical operations, when the supporting leg touches the ground, it is necessary to maintain a "rapid transition from the forefoot to the entire foot".

The landing time should be controlled between 0.01 and 0.02 seconds.

At the same time, the core muscle groups maintain isometric contraction to maintain trunk stability and ensure that the reaction force travels along—

The path of "ankle joint → knee joint → hip joint → trunk" transmits without loss.

Data from the Su Shen exercise biomechanics experiment.

When the stiffness of the supporting leg joint reaches the above standard, the braking time during the support phase can be shortened to 0.03-0.04 seconds.

The time is 0.05-0.06 seconds under normal stiffness configuration.

The horizontal propulsion force accounts for 55%-60% of the total, compared to 45%-50% for the standard configuration.

Taking male 100-meter athletes as an example, their speed can be increased by about 0.5 m/s during the top speed phase.

Of course, the specifics depend on the actual operation.

But for top athletes, this is already a tremendous breakthrough.

This is especially true for athletes who lack top speed.

That's all.

Powerful enough, lethal enough, and unexpected enough.

Of course, some people might say that such energy is too wasteful and requires too much physical effort.

It is difficult to sustain.

Su Shen had certainly considered this issue as well.

It involves muscle-tendon synergistic regulation.

This is to avoid "energy-wasting contraction".

The efficiency of muscle and tendon coordination during the high-speed phase directly affects energy utilization, and "excessive active muscle contraction" should be avoided.

This means that the muscle continues to exert force even after the tendon has released its elastic potential energy.

This will lead to a waste of energy.

The specific control strategy is as follows:
Through proprioceptive feedback from muscle spindles and Golgi tendon organs, during the extension phase of the supporting leg, the active muscle contraction only needs to maintain the "direction and amplitude of the tendon's release of elastic potential energy".

Rather than providing additional power.

For example, in the initial stage of push-off, when the tendon begins to release energy, the active contraction intensity of the quadriceps femoris is controlled at 60%-70% of the maximum contraction intensity.

As the tendon releases energy.

The shrinkage strength gradually decreases to 40%-50%.

Continue until the push-off ends.

Su Shen improved his muscle-tendon synergy efficiency by 30%-35% through 12 weeks of "muscle-tendon synergy training".

Energy waste rate decreased from 25% to below 10%. Speed decay rate during peak speed phase decreased from 3% to 1.5%.

Ensure that the peak speed duration is extended by 0.3-0.5 seconds.

How do we achieve a composite trajectory of "arc forward swing + straight return" to keep the deviation angle between the resultant force direction of the hip joint and the direction of movement within 5°?

How can energy transfer efficiency be increased from 68% in traditional technologies to 89%?

That's what Su Shen did.

It adopts the physiological basis of power generation in skeletal muscle through the stretch-contraction cycle (SSC).

The forward swing reset technique precisely controls the speed and amplitude of muscle stretching.

To push SSC efficiency to its theoretical limit.

1. Pre-stretching phase: During the forward swing, the gluteus maximus is rapidly stretched to 1.2 times its resting length, and the frequency of afferent nerve impulses to the muscle spindle reaches 300Hz, triggering a strong stretch reflex.

2. Energy storage phase: Tendons store elastic potential energy during the eccentric contraction phase, with an energy density of up to 4.8 J/kg, which is equivalent to 5 times the amount of glycogen in the same mass of muscle.

3. Rapid release phase: The resetting action causes the muscle to quickly switch from an eccentric state to a concentric contraction, and the elastic potential energy is released within 0.02 seconds, with the peak power output increasing by 2.3 times compared to simple concentric contraction.

Electromyography studies have confirmed that when using the forward swing reset technique, the peak electromyographic activity of the gluteus maximus occurs 0.015 seconds after the start of the reset movement, which is 0.03 seconds earlier than the traditional technique, achieving a precise match between energy release and the timing of force exertion.

In this way, the curved ground grip can be combined with the front swing.

Combining curved ground-pushing and forward swing?
Yes.

That's what Su Shen planned.

The human motion kinetic chain follows the principle of "proximal dominance - distal transmission". As the core proximal joint, the hip joint's motion pattern directly determines the energy transfer efficiency.

The forward swing reset technology achieves seamless powertrain engagement through three mechanisms—

Timing-based coordinated control: The core muscle groups are activated 0.02 seconds in advance during the forward swing phase, stabilizing the pelvic position and reducing energy loss during hip joint exertion to below 12%.

Joint coupling optimization: The hip joint forward swing, knee joint flexion, and ankle joint dorsiflexion form a "three-joint coupling", with the inter-joint motion phase difference controlled within 5°, and the energy transfer efficiency improved to 91%;

Load distribution and buffering: The reset movement absorbs the ground reaction force through the eccentric contraction of the quadriceps, reducing the instantaneous load on the hip joint by 30%, creating conditions for sustained force exertion.

In other words, before Ralphman proposed this theory, there were others who wanted to improve the curved ground excavation method.

But the results were never good.

The biggest problem is excessive energy consumption.

The load is too large.

This is not a lie.

Comparative experiments show that athletes lacking forward swing recovery techniques experience significant kinetic chain disruptions during high-speed running.

In other words, the knee joint is still in the buffering phase when the hip joint exerts force.

When these two elements intersect, energy loss can reach as high as 45%.

Then you simply cannot be together.

It is even less likely that the front side can be maintained.

If you do systematic training for the forward swing recovery and master this technical system, this precise control will enable athletes to quickly switch between "power generation - recovery - power generation" within the gait cycle.

The continuity of power output is significantly better than previous technologies.

Prior to this, there were three bottlenecks in hip joint power output that the dominant technologies could not overcome.

All of these factors will prevent it from achieving sustained high power output from the hip joint.

First, the energy conversion efficiency is low: relying solely on active muscle contraction to generate energy results in an elastic potential energy utilization rate of only 28%, limiting the peak power output.
Secondly, there is a significant gap in the power generation cycle: after the push-off ends, there is a 0.05-second buffer period before the next round of power generation can begin, causing an interruption in power output;

Thirdly, there is a lack of coordination in the kinetic chain: the phase difference between the movement of the proximal hip joint and the distal joint exceeds 15°, and more than 50% of the energy is lost during the transmission process.

Sports biomechanics tests show that athletes using traditional techniques exhibit "sawtooth-like fluctuations" in hip joint power output.

The peak interval is 0.12 seconds.

The forward swing reset technology enables "platform-based continuous output".

The power level is maintained at over 80% of its peak value for up to 0.08 seconds!
Prior to this, there were other technological categories that wanted to be improved.

In response to the shortcomings of traditional technologies, improved solutions such as "backswing acceleration technology" and "knee joint dominant technology" have emerged... but none of them can achieve continuous high power output.

Just when everyone was almost in despair.

Ralph Mann presented a completely new theory.

If……

Backswing acceleration technology: This technique attempts to increase power by enhancing the speed of the backswing, but it results in a 40% increase in energy loss during the forward swing phase and fails to form an effective stretch reflection.

Knee-dominant techniques: Over-reliance on quadriceps power causes the hip joint to be overloaded beyond its physiological limits, resulting in a 55% power decay after 30 seconds of continuous exercise;

Hybrid power generation technique: It combines forward swing and backward push-off movements, but due to the complexity of neural control, the coordination of the movements is reduced, and the energy transfer efficiency is only 65%.

They may seem to have their own problems, but in reality, there is only one core essence—

The common flaw of these technologies is that they have failed to establish a closed-loop mechanism of "energy storage-release-reset".

It is impossible to establish this successful closed-loop mechanism.

Therefore, the problem of power output continuity is destined to remain unsolved.

Therefore, Ralph Mann said that the uniqueness of the forward swing reduction technique stems from its precise understanding of the hip joint's power output mechanism.

This wasn't something he came up with on a whim.

This led him to spend many years summarizing his experiences and studying literature, thus improving his interdisciplinary comparative skills.

The final conclusion is that as long as these points are done well:
For example, the integrity of energy recycling: for the first time, a closed loop of elastic potential energy "storage-release-re-storage" has been achieved, with energy utilization exceeding 80%, far exceeding the 50% limit of other technologies;

For example, the seamlessness of the power chain connection: through joint coupling and timing control, the energy transfer discontinuity in the gait cycle is eliminated, and the power output fluctuation rate is reduced to below 15%;

For example, optimal physiological adaptation: conforming to the length-tension relationship of muscle contraction and the laws of neural control, so as to achieve the best balance between motor unit recruitment efficiency and energy consumption.

Su Shen obtained specific data through his own laboratory, which was more accurate than Ralphman's theory.

In other words, it involved conjecturing about experiments for multiple projects.

It is not limited to sprinting.

That's right, so why is this technology called a future new technology system?
The reason is that it's not just applicable to sprinting.

It is a powerful technical system applicable to multiple track and field disciplines.

If it were placed in a sprint event:
Athletes using this technology saw an average improvement of 0.32 seconds in their 100-meter time, with the hip joint contributing 72% of the improvement.

If it were placed in the long jump event:
For every 1 W/kg increase in sustained power output of the hip joint during the approach run, the long jump distance increases by 0.18 meters, with a correlation coefficient of 0.89.

If it's placed in a hurdles event:
For every 1 rad/s increase in hip joint reset speed during hurdle clearance, the cadence between hurdles increases by 0.2 steps/second, and the power sustaining time is extended by 0.03 seconds.

What's even more terrifying is that when you develop this technology, you maintain your critical output limits, or even break through your original output ceiling.

It can even reduce your injuries and fatigue at the same time.

Peak load decreased.

During the centrifugal braking phase, the ground reaction force is evenly distributed to the entire lower limb, and the instantaneous load on the hip joint decreases from 5.8 times body weight to 3.9 times body weight.

Muscle imbalance improved.

It enhanced the synergistic ability of the gluteus medius and iliopsoas muscles, increasing the ratio of internal and external rotator muscles of the hip joint from 0.65 to 0.92, thus reducing compensatory injury.
Precision motion control.

It reduced the range of hip joint displacement during force exertion, increased the contact area between the acetabulum and the femoral head by 25%, and reduced the rate of cartilage wear by 40%.

That means that if an athlete uses the forward swing recovery technique appropriately—

The incidence of hip labral injury was reduced by 62% compared to users of the older technology.

The incidence of hamstring strain decreased by 58%.

Blake was practically drooling when he saw it.

I wish I could give it a thumbs up with both my hands and feet.

This way.

It's simply one of the most amazing gadgets ever.

Whoever controls it will have a devastating weapon.

"We've arrived at the speed zone, let's see the ultimate race!"

"Oh, Sue, it's so fast it's blurry!!!"

"Instantly elevates their status above everyone else!!!"

Bang!
This is definitely not an exaggeration by the on-site commentators.