I like reading this Journal of the study of the kinematics erm... I like the statistical analysis they provide in the form of a graph and table of the stride length, stride frequency, speed of usain bolt compared with the finalists at the race.
Usain bolt has a lower stride frequency than the others, but a bigger stride length which is at it's biggest in the end, which doesn't make sense, as he is maintaining speed after 60m he is still increasing stride length.
he has a stride frequency of 11.2 in the first 20m mean in the three races, 2008, 2009, 2012
![](http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661886/bin/jhk-36-149f1.jpg)
Journal
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661886/