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Search results for query: blackout

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  1. A

    New freediver, currently at the Great Barrier Reef AUS - iron defficiency and freediving

    I suspect that anaemia could lead to a higher possibility of blackout if you tend to push a bit towards hypoxia when freediving.I'm pretty sure it's true that the body will be able to cope better with it to some degree as you do more breathhold/freedive training (improved dive response meaning...
  2. dawnzus21

    Is there a correlation between susceptibility to fainting and blackouts?

    That was surely an interesting bed time reading xDAll of these are very interesting! Thank you so much! However, none of these really include breath holding so it’s a bit hard to know for sure. For example: it’s impossible to adapt your breathing rate underwater, because you’re basically don’t...
  3. A

    Is there a correlation between susceptibility to fainting and blackouts?

    Sorry, wrote some of above in a bit of a rush… Wasn’t meaning to suggest blackout isn’t something of concern at all - e.g. no more diving at least rest of day after blackout.Just saying that if it really is just a blackout caused by pushing hypoxic limit a bit too much, and after some time...
  4. A

    Is there a correlation between susceptibility to fainting and blackouts?

    ...that could be another link with fainting - so some kind of anaemic condition would likely also having some effect on susceptibility to blackout (since it's clearly linked to oxygen transport & delivery in the blood).So I guess if you are anaemic, which could have fainting as a potential...
  5. dawnzus21

    Is there a correlation between susceptibility to fainting and blackouts?

    Let me start by saying that I truly appreciate your answer!I can’t remember exactly who told it to me (it might even be my sister), but she told me that the main reason why the lack of blood to the brain causes fainting in the first place is because it deprives the brain of oxygen. Now, if...
  6. A

    Is there a correlation between susceptibility to fainting and blackouts?

    ...role?But I guess your (sister's?) main concern would be whether this could lead to it being easier (for you?) to reach the point of blackout when freediving. Am I right in thinking the fear would be that it could be more dangerous for you when freediving (or for her, if she is considering...
  7. dawnzus21

    Is there a correlation between susceptibility to fainting and blackouts?

    Hello! I’m a beginner free diver and a question has popped up in my sister’s mind, so I am going to ask it in here XD. Women are more prone to fainting because they have significantly less blood to store oxygen in their bodies. Does it also make them more prone to blackouts?
  8. J Campbell

    What is it even that determines how long you can hold your breath for?

    ...by CO2 levels. But for folks who compete, they learn to push through that urge and the thing that limits their breath hold is O2 levels. They train to hold until the moment before blackout. But for recreational divers and spearfishers, we are not wanting to get close to blackout, so hyper is bad.
  9. Mr. X

    What is it even that determines how long you can hold your breath for?

    Interesting response, thanks. :) The mention of fasting is interesting.BTW Fasting can also affect healing - the Russians studied that* - and weight, e.g 5:2 diet - which helped me several years ago). There can be danger in excessive fasting though our American friends studied that, back...
  10. Jamsebrown

    What is it even that determines how long you can hold your breath for?

    This is really helpful, OMG! Thank you so much! :)
  11. A

    What is it even that determines how long you can hold your breath for?

    ...terminate breathhold, nobody can yet fully answer your question about breathhold performance, let alone actual physical limit (i.e. reaching blackout).That's not to say there hasn't been research on the topic... here are a couple of fairly recent research articles that you might find...
  12. Jamsebrown

    What is it even that determines how long you can hold your breath for?

    And what affects the physical limits? Who has an advantage in that regard?
  13. J Campbell

    What is it even that determines how long you can hold your breath for?

    How long can you hold your breath? The short answer is: until you blackout. Three things will influence this: your mental state of mind, your physical limits, and training.
  14. Jamsebrown

    Answered My weird questions about breath holds

    You’re truly a king. I didn’t expect an essay. Thank you so much for the answer! I appreciate it a lot!
  15. A

    Answered My weird questions about breath holds

    ...(on average) with height and general overall build, which initially suggests that someone taller might (on average) take longer to blackout.However, I'd also counter that by noting that increasing height (and weight) will typically mean you have more cells in your body, which would...
  16. M

    Answered My weird questions about breath holds

    While there are many physical variables that play into it (as you already know), the most important quality I've found that separates a lot of people in breathholding and diving is your mind and being able to allow full relaxation. I know of a few people that are relatively fit and healthy, but...
  17. Jamsebrown

    Answered My weird questions about breath holds

    ...on if height, weight, and ESPECIALLY gender have any effect on the time a person can hold their breath for and the amount of time it takes to blackout. So I’m sorry for my obsessive questions, sorry for my spammy behaviour. I hope you understand. Thank you for your time and have a wonderful...
  18. J

    Question Height/weight advantage?

    Yeah, I was basically asking what are the factors that influence the time it takes to reach hypoxia or a black out. Asking that as I’m a relatively short person, but fairly skinny as well. So I’m wondering what advantages or disadvantages I might have and how will I perform in comparison to...
  19. A

    Question Height/weight advantage?

    ...- there are some studies on apnea breaking point, for example see here. Some who have trained breathhold a lot are able to continue until blackout (though would only do so very occasionally).So are you asking about the factors that influence the time it takes to reach hypoxia/blackout? If...
  20. J

    Question How long it takes to blackout?

    How long it takes to blackout from holding your breath if you don’t move that much? Will it take longer for a trained individual? It seems like there isn’t much known about it or what have an effect on it, like height, weight, age, gender, etc. I know the breathing reflex will kick in before but...
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