I recently was asked a good question: does high altitude resistance training actually work?:

Certainly using oxygen filtering masks works to simulate high altitude training. You may get the same benefits with an oriental exhaust mask (that cuts air intake by about 30%, and I currently use) over the mouth. Moreover, you may put training stress on your lungs by willfully controlling respiration– learn to breathe less oxygen per breath by many means such as through the nose, heating air by holding in the pharynx, diaphragm breathing, filling just the lower lung lobes, and so on.

The market $89 training mask is ingenious; however, the company’s argument of equality of passive vs. active training holds no water, and this is a lesson for all sports, dance, bedroom, or walk in the park. Having ambled on most of the world’s major ranges, active training out-performs passive in myriad physiological gross and microscopic ways, despite studies to the contrary by lazy bone scientists. Isotonic overpowers isometric. Physical doing beats mental rehearsal almost always.

Physical training made easy is grasping there are three techniques to fitness gain: increased weight, repetition or frequency. This is a distillation of every exercise physiology class I ever took, and Joe Wielder’s technique to stop getting sand kicked in my face. The best gain for most sports is by increasing weight (resistance), e.g. the ankle weights I’m wearing and 10lb. of books, bills and camera stuffed in my hiking shorts.

The face mask can be said to increase the resistance of respiration. Future elite athletes, I think, will train in underwater gyms like track horses to increase resistance on every square-inch of skin, and later Olympic champs will train on Jupiter (or a simulator) requiring more effort for every muscle fiber to contract. Until then, you may sink your gym set in the shallow end of a swimming pool, and dog paddle with a weight belt between sets.

The resistance trainer will win nearly every time against one who doesn’t, whatever the activity. I used to tell competitors that the wire on my tournament racquetball racquet was a coach’s antenna.