I don't know if it's just me just being grumpy for slow or lack of progress in the sprint start drive phase and maybe i'm over thinking this, but I have a theory about force developed during the start.
Not a lot of stats on force developed from the block start to up right but what it seems to me is that they don't put all out force at the blocks, I think maybe they want to come out as quickly as possible but start applying more force after, increasing force exponentially for every steps they take.
Usain bolt's max force production was reached after 1 second, which is between 5m and 10m, so have we been just chasing the wrong end of the stick or maybe the more reactive of an athlete you are then the later you apply force.
will try this out on the track and see how it effects my form and time, from 100% effort force out of the blocks and then accelerate after, upto relaxed but fast start and then gradually increase power for every stride.
i don't know, just my 2 cents.