Not necessarily only hypoxic. As I wrote, the sessions may and should include also other exercises - hypercapnic, semi-dynamic, technique, relaxation, games, etc (as I wrote, there are many examples in my database of exercises). 5 hours or sessions of training a week may be too much for some (that's why I wrote 2-5), but little for others (I know freedivers who train daily). However, I doubt that doing a single table a week makes any effect at all.
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