Four elite rowers completed a 12-day altitude training camp living at 1800 m, and training at 1800 m and 915 m, to assess changes in resting metabolic rate (RMR). RMR and body composition were assessed pre- and postcamp. Downward trends in RMR and body composition were observed postaltitude: absolute RMR (percent change: -5.2%), relative RMR (-4.6%), body mass (-1.2%), and fat mass (-4.1%). These variations are likely related to the hypoxic stimulus and an imbalance between training load and energy intake.
Keywords: RMR; athlètes d’endurance; basal metabolic rate; body composition; charge d’entraînement; composition corporelle; disponibilité énergétique; endurance athletes; energy availability; hypoxia; hypoxie; métabolisme de base; training load.