breathing higher-concentration oxygen supports measurable gains in maximal oxygen uptake
Inspiratory muscle training (IMT) at 50% MIP significantly increases maximal oxygen uptake (VO2max) in military personnel after 12 weeks of training.
What this means for you
VO2max is essentially your body's ceiling for how efficiently it uses oxygen during effort. When that number goes up, everyday activities feel easier, endurance improves, and your cardiovascular system has more reserve — something most people notice as less breathlessness and faster recovery after exertion.
The published research
Combined inspiratory muscle and lower limb resistance training enhances cardiopulmonary function in military personnel
Frontiers in Physiology · 2026
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