Last Updated on November 10, 2023 by pg@petergamma.org
We do not know the answer. Under Google Scholar about «treadmill»:
https://scholar.google.com/scholar?start=0&q=treadmill&hl=de&as_sdt=0,5
We haven’t found a really serious scientist who tests treadmill accuracy. Also none who has tested the accuracy of Xiaomi threadmills:
https://scholar.google.com/scholar?start=10&q=xiaomi+treadmill&hl=de&as_sdt=0,5
If treadmills for sporting acitivities would be of interest for really serious scientists, would they not write papers about those and use those in their scientific studies?