Abstract: Stationary training bicycle having a pedal crank mechanism coupled to a transmission by a flywheel. A magnetic braking device interacts with the flywheel and is variable in its braking action. A calibration table stored in a computing device contains a plurality of braking device settings with reference rundown times of the flywheel not loaded via the pedal crank mechanism and relating to the speed reduction from a first speed to a second speed. The actual rundown time of the flywheel is ascertained at least once by means of a measuring device or the computing device and compared to the reference rundown times. If actual setting and target setting do not correspond, information relating to the actual setting can be output on the display device.