The Perfect Stride Length: How to Calculate and Improve Acceleration
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- Опубліковано 6 лют 2025
- In this video, we dive deep into the biomechanics of the drive phase in sprint acceleration, focusing specifically on the importance of stride length. Understanding how long your stride should be during this critical phase can help you maximize speed and efficiency. We’ll break down why stride length matters, how it affects your performance, and provide a simple method to calculate the optimal stride length for your own training. Whether you’re a sprinter, coach, or athlete looking to improve, this video will give you the tools to enhance your acceleration
Thank you 🎉
Finally someone explains it in a simple way. What is not clear is from where to measure the leg length? Its not from the hip bone right? Thanks
@@marioscicluna6057 the most precise way is to measure it from the top of the greater trochanter as it is where the leg actually moves. It’s the prominence on top of the thigh and when locating it you should feel like the hip bone rotating inside when the athlete performs a leg abduction
Great video, very clear and simple
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very interesting. Thank you. SO the 2nd step is smaller than the 1st, but then from 3 onwards it increases? These are the first metrics I have ever soon on this!
the first step is longer because it is measure from the rear leg
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Great vedio ❤
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It’s simple the stride length should go up the contact time should go down as the race goes on when both of these stop thats your top speed.
@@isoxsniper4307 max velocity is determined by stride length times stride rate. 2m x 5s/s = 10m/s for example. However many athletes either do a much longer stride then needed or rely to much on frequency. The goal during the acceleration, as this videos discuss acceleration is horizontal force production. To obtain max horizontal force we need to put our body in the best portion to obtain so. The importance of monitoring your stride length during acceleration comes exactly for this reason as many athletes just want to perform a very long step and end up with a vertical shin which will increase vertical and eccentric forces in a phase of the 100 where we should only be concentric and horizontal
@ sure but simply put there comes a point for every sprinter that u can no longer lengthen your stride whilst keeping the same or lowering your ground contact time or lower your ground contact Time while keeping the same stride length this will be your max velocity. Because u can no longer maintain the force if you try to move your legs faster or you can no longer keep the leg speed if u try to push harder.
@ but in this video we are talking about acceleration. Not max velocity where we obtain the lowest contact times and longest stride lenght
@ well let me elaborate I seen these ai apps that watches your stride length grow as you accelerate and your ground contact time decrease as you accelerate step by step u should do a review of one them Theyre teaching sprinters how to lower the contact times as they increase the stride reach top speed the fastest and achieve the most acceleration
@@isoxsniper4307 please, about what app you are speaking of? (pardon my terrible english)
Hi mate, awesome video, do you offer online coaching?
Hi yes we do but as we are located in China, time zones can be tricky
@ how do I contact you about this?
You said measure from the rear plate of the block? Does that mean the front of the back block? Or the rear of the front block?
from the front part of the rear block. That portion we call it plate. Front plate and rear plate for easier understanding
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Can you please explain measuring the GT length again? Sorry, I didn’t really understand it. Also in the video, after you say GT you say something like “greater to kanter” can you tell me what you said? Also, can I apply this method without any blocks?
He said greater trocanter. It the bony prominence on your hip. I'm simple terms: find the hard bump on the outside of your hip
Why can't Olympic Weightlifting coaches break down technique like this. For example you could easily go 5 years snatching only to realize your muscles were actually tight and adhesions which were confused for lack of mobility. Even your hand, finger, grip and torque, knee, hip, chest, eyes, so many little things that can throw off a movement especially when you add weight.
First comment is right. Greater Trenchant AKA GT which is the prominence on top of the thigh were the hip ball rotates inside the hip socket. Which is more reliable than the iliac crest for leg measurements. To be honest it could work also without the blocks, but you would need to make sure that the athlete is always starting in the same position, which is harder without the blocks in place. Markers will do
I feel you, but there's a difference between being a Coach and a Biomechanist. I'm trying to be both
Why do you use 1,5 to multiply? Do you change this constant if the athlete is for example a girl with less strength?
For female and male the length of acceleration will use the same numbers while for MxV it will change. Stride length during acceleration its not dependent on strength or power (strength and power provide are dependent for how fast the extension of the leg occurs).
Stride length during acceleration is dependent on the length of your leg from the starting point of the GT. As the athlete is coming from a 0 Velocity position, he/she needs to spend more time on the ground to generate force in order to accelerate.
If you think about it like being strong and pushing away, you are not actually accelerating bur rather jumping away.
It'll also depend on the power levels of the athlete. We can't apply this to every athlete with similar GT length. What are your thoughts on this?
@@The_Sprints_nd_Jumps_Guru yes sure it does depend. However, more than power it depends on force and body weight. During acceleration, the body comes from a standing position and has to escape also gravity. On a normal athlete that equals to 700/800 N of force on the body. Meaning that an athlete needs to be able to exert slightly more than that to have enough strength reserve to escape powerfully gravity. Usually that equals to being able to lift between 2 or 2.1 times their BW in a parallel squat. Once the athlete does have enough strength reserve to be able to escape the force of gravity on the body it then should be able to focus on horizontal force. So far it worked with every athlete that has reached those requirements
What is the name of the program you use? I want to analyze the videos too.
This one is Dart fish
Hi, how does the athlete strenght affect to the first and second step? I believe that we might not multiply by 1.5 if we have a weaker athlete. Does it change depending on the strenght?
Strength does not depend for the stride length rather for the ability to generate force on the ground and contrast the effects of gravity on the body. So two athlete with different strength levels but same leg length will generally have the same stride length, however the weaker athlete will eventually need more time to contrast the effects of gravity and will have a slower concentric action
Sir can I send you my 20m start video , can you analyze it ?
sure
@VISPerformance what is you email address?
Please send your email address so that I can send you my video on that