Abstract
In patients that are in rehabilitation the physical ability is measured with stationary cycle ergometers. A new ergometer, that can be mounted easily to a bicycle, allows the mobile measurement independent of the location. The principle is based on the simultaneous measurement of chain force and chain velocity. One component of the chain force is measured, that is generated by the change of the chain's direction by pulleys. The velocity of the chain is measured by the rotational speed of one of the pulleys. The new ergometer is easy to attach and remove. The measured values are digitized, numerically processed and recorded. Through a GSM-Modem these data are transmitted to a remote central host computer and allow the control/evaluation of the patient's performance.
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