As a runner, I also think the 40's and shuttles in more apt. But, they should have an eye-exam every 2 or 3 years. And, there probably should be some general stamina test -- so maybe a half mile or a mile. I have worn my GPS running watch for many years and a flank official will walk, run, jog 4.5 to 5 miles per game. BJ a little more. U a little less. So, you have to be able to "go" quite a distance over the course of your 2:30 to 3 hour game.