What is "side-straddle hops"

Usage examples of "side-straddle hops".

Then, driven by barking second-tier cadre, they ran hard to the chin-up bars, a bar per man, where they alternated between sets of ten chin-ups, fifteen pushups, and thirty side-straddle hops, each exercise serving as rest from the one before.

Anna still watching, he began to do side-straddle hops to activate his body.