“RUNNING BATTLE Runners have long debated the difference between training on a treadmill and training on solid ground. “Belt turnover” is commonly cited as a factor that helps to move your foot backwards and there by makes running on a treadmill easier than running on the road. At constant velocity, is this a real effect? If so, wouldn’t it be felt on any “moving” surface you walk on, such as a train or plane – or even Earth?” (Bruestle, 2017, p.57).
Bruestle, D. (2017) The Last Word. New Scientist. 08 July 2017, p.57.