Abstract: A device for determining power output comprising at least two sensors configured to be accommodated between a foot and a sole of a shoe, and wherein the device is adapted to attach to a cleat; wherein the sensors are adapted to measure a compression force and a tension force applied by a user to a pedal of a bicycle such that the power output can be determined. The present invention overcomes the limitations of the prior art shoe sensors by providing a force measurement device inside the cycling shoe that can measure or calculate compression (push down), tension (pull up) and shear forces that act at the plane of the interface between the cleat and the pedal.

Abstract: The invention provides a measurement device and method for measuring a cyclist's power output, in response to an external force provided by said cyclist applied to a bicycle, including a force sensor (13), characterised in that said force sensor is embedded in a bicycle cleat (11) bolted to the shoe (10). The invention further provides an accelerometer (14) for measuring a cyclist's power output. The inventive device and method provides a number of advantages over prior art solutions. The device of the invention means that the installation does not need any part of the bicycle to be replaced. The present invention does not restrict the type of components that may be used on the bicycle. Because the sensors are embedded in the cleat it is very simple to move the system to another bicycle. The invention also allows for detailed analysis of pedalling style, leading to improvements in efficiency.

Abstract: The invention provides a measurement device and method for measuring a cyclist's power output, in response to an external force provided by said cyclist applied to a bicycle, comprising a force sensor (13), characterised in that said force sensor is embedded in a bicycle cleat (11) bolted to the shoe (10). The invention further provides an accelerometer (14) for measuring a cyclist's power output. The inventive device and method provides a number of advantages over prior art solutions. The device of the invention means that the installation does not need any part of the bicycle to be replaced. The present invention does not restrict the type of components that may be used on the bicycle. Because the sensors are embedded in the cleat it is very simple to move the system to another bicycle. The invention also allows for detailed analysis of pedalling style, leading to improvements in efficiency.