STS-40 Mission Specialist (MS) Seddon on ergometer conducts Exp. No. 066

STS040-211-019 (5-14 June 1991) --- Astride the bicycle ergometer, astronaut Rhea Seddon, mission specialist, breathes into the cardiovascular re-breathing unit during the exercise phase of an experiment. The investigation, In-flight Study of Cardiovascular Deconditioning (Experiment 066), was developed by Dr. Leon E. Farhi of the State University of New York in Buffalo. It focuses on the deconditioning of the heart and lungs and changes in cardiopulmonary function that occur upon return to Earth. By using non-invasive techniques of prolonged expiration and re-breathing, investigators can determine the amount of blood pumped out of the heart (cardiac output), the ease with which blood flows through all the vessels (total peripheral resistance), oxygen used and carbon dioxide released by the body, and lung function and volume changes. Measurements are made both while crew members are resting and while they pedal the exercise bicycle, as Dr. Seddon is doing here. This scene was photographed with a 35mm camera.

astronauts columbia orbiter crew procedures inflight crews spacelab ergometers onboard activities spaceborne experiments sts 40 johnson space center sts specialist mission specialist seddon ergometer exp high resolution sts 40 mission specialist astronaut rhea seddon experiment investigation heart bicycle ergometer exercise bicycle lung function exercise phase volume changes cardiopulmonary function blood flows in flight study state university new york lungs changes blood carbon dioxide crew members earth from space nasa

14/06/1991

NASA

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