The Elevation Training Mask 2.0 (ETM®) was designed to emulate altitude training.The effect of ETM®use on body composition, VO2max and jump power was investigated. Twenty-two healthy adults were separated into an experimental (EXP; n = 10) and a control group (CON; n = 12). All completed 20 weeks of a fitness-oriented program. Only EXP used ETM®. All subjects were evaluated on body composition, Course Navette test and Squat Jump test.No differenceswere found between both groups inbody compositionor jump power. There was an increase in VO2max of EXP.Training with ETM® seems to stimulate the increase in VO2max, with no advantage in improving jump power or body composition.Las Elevation Training Mask 2.0 (ETM®) fueron diseñadas para emular el entrenamiento en altura. Se investigó el efectode su empleo sobre composición corporal, VO2máx y potencia de salto. Veintidós adultos saludables fueron separados en grupo experimental (EXP; n=10) y control (CON; n=12). Todos completaron20 semanas de un programa defitness. Sólo EXP usó ETM®. Se evaluó antropometría, test de Course Navette y Squat Jump. No se encontraron diferencias en composición corporalni potencia de salto. Únicamente en EXP el incremento en VO2máx fue significativo. El entrenamiento con ETM® parece fomentar el aumentodel VO2máx, sin ventajaspara mejorar potencia de salto ni composición corporal.