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stationary bicycle
A stationary bicycle (also known as exercise bicycle, exercise bike, or exercycle) is a device with saddle, pedals, and some form of handlebars arranged as on a bicycle, but used as exercise equipment rather than transportation.
An exercise bicycle is usually a special-purpose exercise machine resembling a bicycle without true wheels, but it is also possible to adapt an ordinary bicycle for stationary exercise by placing it on bicycle rollers or a trainer. Rollers and trainers are often used by racing cyclists to warm up before racing, or to train on their own machines indoors.
A cycloergometer, cycle ergometer or bicycle ergometer is a stationary bicycle with an ergometer to measure the work done by the exerciser.
== History ==
Exercise machines resembling modern stationary bicycles have existed since the end of the eighteenth century; the Gymnasticon was a prominent early example. In recent years, many new stationary bikes have appeared, including those in recumbent positions, upright bikes and indoor cycling bikes which are bikes built for riding in indoor cycling classes.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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