Hypoxic breathing
I've been focusing on my swim for the past few weeks, and the concept of hypoxic breathing sets came up (ex. breathe every 3 strokes, then 5, then 7, etc.). I don't have much experience with these (other than I know they're hard!), but what do all of you think? How exactly does a triathlete benefit from doing these? Is there a minimum level of swim competency that you should have to get the most out of hypoxic breathing?
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I think it has more application for pool swimming. It teaches breath control and how to go without oxygen for a while, like when doing flip turns or sprinting. It is also good for awareness andhaving your mind and body deal with something uncomfortable.
I also think sets of this nature help to calm us in the water. When there isn't that much fuel around then we need to learn to use it for the task at hand. When I do these sorts of sets I focus on balance via a tight core, a smooth power phase and a gentle kick. It isn't until I get to the 9 cycle pattern that I really start to suffer...
Hypoxic sets are what they made us do in the 70's and 80's to add a sadistic twist to workouts. My favorite was 100's where you get 4 breaths the first 25, 3 the second, 2 the 3rd and 1 the last.
Short answer, no benefit.
When I was becoming a NAUI SCUBA instructor in college, they made us jump in the deep end with all our gear in both hands with air turned off. To pass, you had to jump in, turn on the air, and put your complete set up on without letting a single peice of gear touch the bottom, float away or leave your control. It had nothing to do with diving, but it did demonstrate confidence, comfort in the water, the ability to keep cool and stay calm.
Freestyle sets without breathing would seem to be a little of the above, but more likely have zero benefit. IMHO, I would say focus on form, breath in a constant cycle and swim your fastest without damaging either...