Cyrille Fournier performs his test on the treadmill

Cyrille Fournier performs his test on the treadmill after the first 35 days period of isolation. ESA-selected Mars500 crewmember Cyrille Fournier is one of a six-strong crew living and working a special isolation facility at the Institute of Biomedical Problems (IBMP) for a 105-day stay as part of the Mars500 study.