Publications by authors named "Cecile Thevenot"
Bedrest shifts fasting and postprandial fuel selection towards carbohydrate use over lipids, potentially affecting astronauts' performance and health. We investigated whether this change occurs in astronauts after at least 3 months onboard the International Space Station (ISS). We further explored the associations with diet, physical activity (PA), and body composition.
View Article and Find Full Text PDFFuture long-duration human spaceflight will require developments to limit biocontamination of surface habitats. The MATISS (Microbial Aerosol Tethering on Innovative Surfaces in the international Space Station) experiments allowed for exposing surface treatments in the ISS (International Space Station) using a sample-holder developed to this end. Three campaigns of FDTS (perFluoroDecylTrichloroSilane) surface exposures were performed over monthly durations during distinct periods.
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- Astronauts experience body mass loss and changes in body composition during long-term space missions, with a study observing these effects over 6 months on the International Space Station.* -
- Measurements taken from 11 astronauts showed a significant decrease in body mass, primarily due to changes in physical activity and energy expenditure, with notable differences between individuals' responses to exercise.* -
- Those who maintained higher energy expenditure while in space managed to preserve their fat-free mass, while others who decreased physical activity experienced a reduction in fat-free mass and an increase in body fat.*
Future long-duration human spaceflight calls for developments to limit biocontamination of the surface habitats. The MATISS experiment tests surface treatments in the ISS's atmosphere. Four sample holders were mounted with glass lamella with hydrophobic coatings, and exposed in the Columbus module for ~6 months.
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