Changes

If you'd like to check how accurate your [[Treadmill]] is, here's the testing procedure. It's not as The simple as some other approaches, but it provides approach of timing a far more accurate resultnumber of revolutions of the treadmill belt doesn't work because the belt slows down when you're in contact and speeds up when you're in flight. This test evaluates the treadmill while you're running on it, so it includes any possible slowdown avoiding that occurs well your foot is in contact with the beltproblem. I developed this procedure while testing the [[Stryd]] Footpod. I'd found that their Footpod is stunningly accurate outside, but seemed to be way off on the treadmill. The folks at Stryd investigated reports from various runners about problems on the treadmill, and they found that many treadmills vary in speed, slowing down when the runner is in contact with the belt. This is in addition to any other calibration problems a treadmill might have.