Cycling power meter

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A cycling power meter is a device on a bicycle that measures the power output of the rider. Most cycling power meters use strain gauges to measure torque applied, and when combined with angular velocity, calculate power.^[1]

The technology was adapted to cycling in the late 1980s and was tested in professional bicycle racing i.e.: the prototype Power Pacer (Team Strawberry) and by Greg LeMond with the SRM device. This type of power meter has been commercially available since 1989. Training using a power meter is increasingly popular.

Power meters generally transmit data wirelessly and can be paired to a bike computer, smartphone, or smartwatch. By providing instantaneous feedback to the athlete, and by allowing more precise analysis of rides, power meters can be a useful tool for training.