Freediving Training Dive Response and Pulse Oximeter Demonstation

[smeahzidente]

very inspiring ... how long did it take you to learn to do this?

[wjohnson100]

@smeahzidente I have been able to do it since I did a few years of marathon training back in my 30's and early 40's. I think that marathon training had something to do with it. Not sure if it is because of anything special I did.

[gypblood]

what the!!>>???

you can lower your pulse at will?

I wanna do that!

[wjohnson100]

Yes i can. I just cannot eat before trying it. It has required years of marathon and freediving training to do it. I don't know if there is a shortcut or not. One thing I know. is very helpful to have a heart rate monitor to use as sort of a biofeedback device.

[johanflod]

thanks a lot for explaining. I am just reading "manual of freediving" and this illustrates clearly some of the ideas !

[kai73kora]

you can reduce your pulse by exhauling all the air and hold your breath,when the contactions comes the pulse goes down very quickly.

[wjohnson100]

Not exactly holding my breath but just breathing shallow and extremely slowly.  No contractions either.

[kai73kora]

Does the contrcations starts the DR or kan you have DR without the contractons?

[wjohnson100]

I don't see the dive response as connected to contractions. In this demo I don't go far enough to have contractions. In my long breath holds, I don't start having serious contractions till very late anyway. I suspect that the dive response is related to CO2 and O2 levels in the blood. When O2 levels start to drop significantly at about the 5 minute point, then the heart rate starts to drop.

[kai73kora]

is not the contractions there to help the heart pump blood?

so when the heart goes slower the contrations will help the heart?

any connection?

[wjohnson100]

No, the contractions are of no benefit to heart function, they are just an involuntary response to high blood CO2 levels.

[qis2]

That is one of the coolest demonstrations of heart rate reduction I've seen.

Was thinking of taking my h/r during some static holds. Going to do that now.

how low does your HR go at depth?

[wjohnson100]

Hi,

Never measured it at depth. I imagine it goes down into the 20s at depth or maybe lower. I have found on statics that my heart rate takes about 6 minutes to drop into the high 30s or low 40s. By that time my SAO2% is about 78-80%. Good luck in your training.

[BreathTakingDives]

hey mate its ant judge here. just wondering what kind of pulse oxi meter that was? i want one!

thanks for the vid.

[1992peter]

Does your pulse ox have audio?

[gogglesnoseplugs]

Great video! So... How did you do this dry? Were you holding your breath completely? If not, could you drop it even more dry completely holding your breath? I'm curious to try this myself, with proper supervision of course, yet wonder how I could hold my breath without air getting in my nose. I'm just interested in your opinion about this...