What commenters say. Recommended to help understand open mechanics and as a drill to perform on a slope for start improvement.
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@lapband45in r/Sprinting • Recommends
On “Form”
Straight leg bound: link to this video
Speed bound: link to this video
You may know these under a different name but if you’ve never done them take them very slowly until you get the technique down to avoid injury
…d try bounding drills, which is where you really try to get as much distance per stride as possible like a triple jumper. Although this won't help with being flat footed, it can help you understand the difference between big and open mechanics vs the faster and sharper mechanics in real sprinting. Long levers vs short levers.
Here's an example: [video
You'll notice he's not got a lot of heel elevation which is okay for bounds.…
On “HOW can I improve my start? Could you please tell me”
Oh you see? You've got a 20m slope!
I don't think broad jumps (as in a single max distance jump) are good. Multiple bounds are better suited, especially single leg bounds (which I find are much better on a slope…): link to this video or link to this video (more advanced).
Now let's talk about "flat" exercises.
I can't be 100% sure from your video, but I have a feeling some exercise involving balance could help you. Sometimes a "lack of strength" is a lack of balance and your body is putting the brakes (works the same with "lack of mobilty" BTW).
link to this video or link to this video (start with lower intensity) also link to this video (more "top speed") and just in case there's an easy version link to this video
And then you've got the classics wi…