What Makes A Good Sprinter?

As I've been looking more into sprinting lately, I've wondered what variables contribute to a fast sprint performance.  Obviously, there is a genetic component involved - no one can just "train" themselves to Olympic level speed.  But certainly there's room for improvement, and I was curious as to what factors are important.

The first thing I found involved the strength part of the equation.  This study shows that squat strength is highly correlated to sprint speed and also vertical jump height.  Therefore, improving strength in the squat should improve a person's sprinting time.

Another piece to the puzzle is power output.  This study showed that athletes performance in the jump-squat (with weights added) correlated very substantially to sprint time.  I had assumed that the power output was important as well as the strength portion, since in a sprint a person has to apply force very quickly (power).  The jump-squat is a good measure of power output, since it tests the ability to move weight quickly.

There are other factors involved in improving sprint performance, but it appears that improving squat strength and power are a good start.