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Medical question ??

Thread Status: Hello , There was no answer in this thread for more than 60 days.
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Well-Known Member
Apr 21, 2003
Hi all

Have experienced something today that I was just wondering if anyone is able to shed any light on, if there are any members of the medical fraternity on the forum.

Went in for a dive, had'nt eaten before, and water was quite cold.
Had a long walk to the entry point due to a major cycle race in Cape Town and was not able to park near.
On my 2nd dive, short bottom time ( about 36 seconds), I surfaced and experienced a sudden rapid rise in heart rate.
I has happened once before on a dive, but was very brief. This time I left the water immediately, and could actually feel the heart rate thru my suit, and in my throat area. It eventually subsided after quite a while.

Could this be linked to freediving.? ( I believe lack of O2 in the blood) Rock climbing is my main activity with diving, and physically it's far more taxing than the diving with long walk in's, long routes, but I've never experienced this with climbing ??


When I am in freedive mode, my heart rate at the surface increases drastically. At the instant I hold my breath, it slows drastically, then drops even more at depth with lung compression and bloodshift.
This is your body doing it's best to uptake as much O2 as possible in preparation for the next dive. It's all good!
Erik Y.
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