EXERCISE AMOUNT MEASURING DEVICE FOR BICYCLES AND BICYCLE

An amount of exercise can be measured by using an existing bicycle without the inconvenience of wearing out the tires. The bicycle exercise measurement device comprises a housing (52) configured to be attached to a frame (18) of a bicycle (10), a generator (54) attached to the housing (52), an annular rotational input member (81) for rotationally driving the generator (54), the rotational input member being rotatably mounted on the housing and positioned around a crank axis line which is a rotational center line of a crankshaft (24) and a crank arm (26) for a pedal of the bicycle, a connecting member (90, 140) connecting the rotational input member (81) to the crankshaft (24) or the crank arm (26) in a torque transmitting relationship, a sensor (106, 108, 110, 114, 116, 118) for detecting at least one of electric current of the generator (54), a rotational speed of the generator (54) or the crank arm (26), a torque of the crank arm (26), a position of the crank arm (26), a strain in the crank arm, and a pressure on the pedal (130), a measurement computing unit (100) for computing at least one of power and a pedaling force from an output of the sensor, and a display unit (108) for displaying a computed value of the measurement computing unit.