Oxygen masks limit the amount of oxygen by limiting the amount of air entering the mask. Wearing this mask can improve training intensity and personal strength. At the same time, it can improve muscle strength, help burn fat and improve basal metabolic rate. Oxygen mask is mainly used to train muscle endurance under anaerobic condition, improve explosive force, and enhance cardiopulmonary function and endurance. At present, oxygen masks are widely used in training.
Hypoxia mask is not equal to altitude training
Manufacturers claim that oxygen masks can control the air intake per unit time by adjusting the respiratory resistance, which can imitate altitude training.
But the key to altitude training is "low oxygen content in the air", not "reducing the amount of air inhaled" or "increasing the resistance of breathing". If you have a basic logical concept, you should understand that there is not much correlation between the three.
As far as function is concerned, the oxygen mask can only adjust the resistance of breathing. It can enhance the suction of your diaphragm, but it is useless for ordinary people to enhance this ability. It can neither increase your vital capacity nor increase your body's ability to carry and use oxygen.
Therefore, wearing this mask for training will not achieve the effect of "enhancing the oxygen carrying capacity of red blood cells" in altitude training in hypoxic environment.