52 rest isn’t bad I guess, but 26 seconds of continuous work never happens more than once or twice a season (hell even a career) in American Football.
A much more bioenergetically sound test would be 4-7 repeats of either 40yd dashes, Pro-Agility Drills, W-Drills, Sled Pushes (w/ appropriate weight), etc. with 35 seconds rest inter-repeat for 3-4 series with 3-5 minutes of rest inter-series.
If they wanted to get really sound, they could construct a test specific to each positions biodynamics, but lets not get our hopes up.