Lisa, one of my gymnasts, doing her double, Peter standing by ready to catch her if something goes wrong.
CUT AWAY, in order not to "steal" first thoughts from you guys :)
The purpose of those shots was to study the technical details of the jumps. Putting the exposures all into the same frame was an idea I got after shooting.
Here's another result from a similar experiment: www.flickr.com/photos/palmero/132870776/