Have I been inadvertently doing hypoxic training?

Training
1

I’ve been doing indoor workouts in a closed room (20 cubic meters of space) because of the need for air conditioning.

Have I accidentally been sucking all the oxygen out of the room? Haha.

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2

I have wondered about the same thing many times. I have to train in my bedroom with the aircon because South East Asia.

3

Unless the room is actually sealed - probably not

4

Does your AC pull air from outside or from within the room?

5

Assuming the room is sealed and the AC isn’t pulling any oxygen out of the air, it would have a small effect on oxygen in the room. If you ride at your vo2max of say 5 L/min, that’s about 3% of the oxygen in an hour. O2 goes from 20.8 to 20.2 which is definitely noticeable, but operating at that vo2max for that long is v unlikely.

The bigger concern Is that the co2 goes up to 3%. Not sure what the effect of elevated co2 on training is… hypercapnic training?! :joy:

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6

Yes.

7

…doesn’t CO2 kill you at about 8%?

8

Um, yes to which?

It was an either/or type of question.

9

Woops. The AC just circulates air in the room.

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10

Then you are maybe ending up with a slightly undesirable balance, but it’s a guess at best. Likely depends on the seal in the room from the door as well as any additional venting in the room.

11

There’s a small wall vent to the outside and about 20 mm gap between the floor and the door.

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