Oxygen Table Question

[jerky1280]

I have been doing oxygen and CO2 tables to increase my breath-hold ability. My current max for freediving is 55ft, which is incidentally how deep the water I was diving in was. My previous maximum breath hold is just over 3 minutes. I can complete the CO2 table on this site without too much effort, but not the O2 tables.

During my 2:15 breath hold, I started getting the sweats, and a little tingling in my extremities. During the 2:30 breath hold, at around 2:00, I was sweaty and tingly, and then tunnel vision came on quickly. From my experiences with passing out (mostly during military drills), I believe I was around 15-30 seconds from passing out. Is this response at the end of an oxygen table normal?

 

[code2d]

I just started tables today and I also can do the entire co2 table. its not easy for me yet but I can do it.
I can't do the o2 table that well because my top breath hold is about 1:40-1:50 So this happens to me to on o2 as well.
I don't now if that normal though...
​

 

[penguinator]

Well I am not exactly sure what the main question is.... but yes, tunnel vision and passing-out is common when doing tables (I hope you mean dry tables.... if your very close to passing out in the water, save your buddy the trouble and ease off a bit. Dry tables are great because you can really push yourself to the point of passing out in relative safety).

 

[jerky1280]

Well I am not exactly sure what the main question is.... but yes, tunnel vision and passing-out is common when doing tables (I hope you mean dry tables.... if your very close to passing out in the water, save your buddy the trouble and ease off a bit. Dry tables are great because you can really push yourself to the point of passing out in relative safety).

Thanks for the info, I just wanted to be sure that I'm not going too far, or having unusual symptoms.

 

[hteas]

You might want to focus on being relaxed during the breathholds. You may be getting some of the effects from tension and the resulting high blood pressure. During a breathhold after the diving reflex kicks in, you will have very high blood pressure in your head, while it is very low in your exrtremities, all due to the diving reflex. The blood pressure something your body needs to adapt to, but relaxing should help some
Howard.

 

[hobbit]

What is a table?

 

[shoutatthesky]

Hobbit, I suggest you start here http://forums.deeperblue.net/beginner-freediving/64959-how-start-freediving.html

Everything you need to know to get started including what tables are and some examples.

 

[SnuFPunK]

Well I am not exactly sure what the main question is.... but yes, tunnel vision and passing-out is common when doing tables (I hope you mean dry tables.... if your very close to passing out in the water, save your buddy the trouble and ease off a bit. Dry tables are great because you can really push yourself to the point of passing out in relative safety).

Keep in mind that passing out is something you want to AVOID.
Its not OK to black out.

~ Snuf