Useful workout high jumpers?

Thanks for the input. I did ask the coach and his response was general conditioning. What you’re saying is exactly how I felt, but these girls have no weight to shave. They are not 400/800 runners. One is O.K. at the 100m and 200m, while the other has little top speed.

I moved here not long ago, but 2x4x400m seems to be the ‘general conditioning’ staple of the pole vault and high jump coaches, which confuses me as these are explosive events.