Abstract: Input performance measurement system for a bicycle comprising a drive train, chain ring mounted on a crank, a chain that drives the bicycle's back wheel, and which bicycle has pedals mounted on crank arms and the crank, wherein the system comprises at least one sensor to respond to a force applied to the pedals and transmitted to the chain ring to produce an electronic signal relative to said force transmitted to the chain ring, wherein the sensor is embodied with at least one electrical coil, wherein the coil is supported by a device mountable on the chain ring so as to arrange at least one coil positioned adjacent to the chain ring and/or a crank arm, which element is movable with respect to one coil due to forces exerted on at least one of the pedals so as to vary the electrical impedance of said at least one coil.

Abstract: The invention relates to a home trainer designed to accommodate a bicycle, comprising a brakable drive roll incorporated in a frame, which can be mounted in a friction coupling with a driven wheel of the bicycle. The frame is provided with a sub-frame that is rotatable about a first pivoting point, the drive roll being mounted in the sub-frame. The frame is further provided with a handle rotatable about a second pivoting point, which is adjustable between an operational position wherein the handle pushes the sub-frame towards the wheel such that the drive roll and the wheel maintain the friction coupling, and a neutral position wherein the handle releases the sub-frame such that the drive roll and the wheel do not engage.

Abstract: The invention relates to a home trainer designed to accommodate a bicycle, comprising a brakable drive roll incorporated in a frame, which can be mounted in a friction coupling with a driven wheel of the bicycle. The frame is provided with a sub-frame that is rotatable about a first pivoting point, the drive roll being mounted in the sub-frame.