heel recovery at start

[rainy.here]

@teabagallday

so i see video of carl lewis doing a block start and this video of asafa powell exiting the blocks. ive noticed that powells heel recovery on his first step is very low (toe scrapes ground), but carl’s heel almost touches his butt on its way through its first step. what are people’s thoughts on this? is one way more mechanically correct than the other or is really just an individual thing?

lewis -> http://www.youtube.com/watch?v=RwNw6zT2s-U&feature=player_embedded

powell -> http://www.youtube.com/watch?v=h0aoWI2EARM

I strongly believe that low heel recovery is more efficient. Carl was not a good starter. Powell is one of the best starters ever.