While breathing during swimming is definitely “less easy” than normally, I would point out that when swimming you are not experiencing resistive airflow. But some trainer snorkels do include pieces to increase airflow resistance and it might have similar effects to IMST. I’m not sure if these are used by serious athletes though.
isitmadeofglass says >"when swimming you are not experiencing resistive airflow."<
I disagree! During swimming:
- you have a window of time within which to inhale during each stroke and you're inhaling as much as possible. If you do this slower then you move slower (and you lose the race),
- meanwhile the (mouth, throat, lungs) system works to keep stray water from entering the lungs and to remove any that has entered, causing further restriction,
- the position of the head and neck relative to the body
constantly changes b/c of the body's rotation and the head's movement. The airflow changes accordingly.
Ask any other competitive/Masters' swimmer about this.
For these reasons I doubt "PowerBreathe" is useful to (esp. competitive) swimmers, who already are breathing in a restricted manner. But that's just my opinion after swimming and racing for decades.
Note: To my astonishment, while searching this topic before posting, I stumbled across PowerBreathe ads targeted toward swimmers, the very audience I thought would find it useless! So maybe I've been sucked into a PowerBreathe SPAM campaign unwittingly.
