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The pulmonary resistance training device "Elevation Training Mask 2.0" (ETM) is widely used in various sports to help athletes gain a competitive edge. It is assumed that ETM simulates hypoxic conditions by creating pulmonary resistance, which can potentially result in arterial hypoxemia and as a result promotes the growth of aerobic fitness. The aim of this study was to investigate the influence of wearing the ETM on acute physiological effects, metabolic stress markers and aerobic performance during a maximal incremental cycling test. Ten physically healthy subjects completed maximal incremental cycling test with the mask and without the mask. Results of the ETM usage include insignificant reduction in peak power output (PPO) by −7.5% and this was accompanied by lower lactate (La) values that also did not reach statistical significance. Oxygen saturation (SaO2) was lower at maximal intensity in comparison with the control condition (−2.2 ± 2.3%, p≤0.01), which corresponded to a mild degree of hypoxemia, but did not affect the dynamics of power output at the anaerobic threshold. In conclusion, our findings suggest that wearing the ETM does not produce a hypoxic stimulus great enough to elicit the necessary physiologic responses experienced at true elevation, however, more research is needed to identify the specific physiological mechanisms that are elicited by this device. Keywords—altitude mask, ventilatory training mask, hypoxic mask, aerobic performance, hypoxia, elevation/altitude training.

Effect of the pulmonary resistance training device “Elevation training mask 2.0” on physiological parameters and aerobic capacity during a maximal incremental cycling test