Publications by authors named "Elisa Le Roux"

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.

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Article Synopsis
  • 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.*
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Active-desks are emerging strategies aiming at reducing sedentary time while working. A large inter-individual variability in energy expenditure (EE) profile has been identified and has to be explored to better optimize and individualize those strategies. Thus the present study aimed at comparing the metabolic and physical profile of individuals characterized as high spenders (H-Spenders) versus low spenders (L-Spenders) based on EE during a cycle-desk low intensity exercise.

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