Cyclists typically have a cadence at which they feel most comfortable, and on
bicycles with many gears it is possible to maintain a preferred cadence at a wide range of speeds. • 60–80 r/min is a typical cadence for many recreational and utility cyclists • According to cadence measurement of seven professional cyclists during three-week races they cycle about 90 r/min during flat and long (≈190 km) group stages and
individual time trials of ≈50 km. During ≈15 km uphill cycling on high mountain passes they cycle about 70 r/min. Cyclists choose cadence to minimise muscular fatigue, and not metabolic demand, since oxygen consumption is lower at cadences 60-70 r/min. While fast cadence is also referred to as "spinning", slow cadence is referred to as "mashing" or "grinding". Any particular cyclist has only a narrow range of preferred cadences, often smaller than the general ranges listed above. This in turn influences the number and range of gears which are appropriate for any particular cycling conditions. == Sensors ==