Jesus Depena is the God of high jump research. You can find his interests at:
I highly recommend his 1995 paper for the USA Track and Field science project. It’s a cracking read!
Here are some videos from his site. These movies were obtained from a high-speed videotape taken during the 1988 International Golden High Jump Gala competition in Genk, Belgium by Dr. Bart Van Gheluwe. Depena was first made aware of this pronation problem after discussion with my old trainer Mike Dolby in the late 1980’s. After seeing the videos like these he went on to define the biomechanical problem and to describe the forces and movement angles involved in take-off. Thank you very much Jesus, you are a good man.