The couch/semi-couch safety ergometers ERG 911 L were developed for use in the cardiology sector.

Special safety aspects require the use of a couch/semi-couch safety ergometer, e.g. patients with suspected problems of the cardiovascular system during exercise following a myocardial infarction, after bypass surgery. The use of a couch/semi-couch safety ergometer is also recommended for the examination of elderly and disabled patients. Thanks to the optimal positioning of the patient on the lying surface, a performance identical to bike ergometry is achieved.