In the early 90’s the AF came up with Cycle Ergometry for the annual physical fitness test. You’d start with a cardiac monitor placed around your chest, a 2-minute warm-up, then the test began with someone monitoring your heart rate and increasing resistance on the pedals. It was the biggest joke. You could fail the first time, and ace it a week later.
I once padlocked the bike after I was through testing, and had to beg my Commander’s forgiveness for what I called Constructive Vandalism. He invited me golfing that weekend.