I do wonder if that's ever actually a legitimate concern for prison staffers, if they get an inmate that is exceptionally agile like this. Like, if a parkour champ gets locked up, do the guards take any additional precautions? Do they grease up all the walls and fences to make them extra hard to climb?
These, and other equally important questions, are what keep me up at night.
In Pennsylvania this last year a murderer escaped from prison by pressing himself again two opposite walls and climbing up. So I guess the answer is, no they don't take additional precautions.
They probably hope all of the other security measures will make up for that one. I can't really think of another option. Even prisoners in solitary are let out for an hour a day.