Home Tournaments Calendar Weather Merchandise Sponsors

Go Back   Spearboard.com - The World's Largest Spearfishing Diving Boating Social Media Forum > General Topics (Non-regional) > General Freediving Area

General Freediving Area If Apnea Diving rocks your world, talk about it here!

View Poll Results: How long can you hold your breath?
< 2 minutes 57 23.36%
2-3 minutes 72 29.51%
3-5 minutes 82 33.61%
5-7 minutes 30 12.30%
> 7 minutes 3 1.23%
Voters: 244. You may not vote on this poll

Reply
 
Thread Tools Rate Thread Display Modes
Old 12-02-2016, 08:23 AM   #61
Dr.P
Registered User
 
Join Date: Jan 2016
Posts: 78
Re: How long can you hold your breath?

Quote:
Originally Posted by Mullins View Post
That's complete rubbish I'm afraid. Suggest you read up on freediving physiology?
I hear and respect your opinion. A quick google search that maybe I should have done earlier shows this has been a source of hot contention for at least 2 decades by different authors and on the forums. ...even the US Navy has an opinion! I don't think we'll settle it today, so I'll offer up my case study of one as evidence for the aerobic camp, though as will all physical activity I'm sure there are a mix of muscle fiber types and metabolic pathways involved.
Dr.P is offline   Reply With Quote
Old 12-02-2016, 08:48 AM   #62
Dr.P
Registered User
 
Join Date: Jan 2016
Posts: 78
Re: How long can you hold your breath?

Quote:
Originally Posted by growingupninja View Post
Dr. P, I think you are ignoring the effect of vasoconstriction, which we know is particularly strong for deep dives, and for DYN swimmers, although genetic factors seem to come into play outside of extreme pressure. Muscles definitely do not get to consume all the O2 they want during depth and DYN.

Sent from my SM-G930T using Tapatalk
...great point, and it actually was my original argument. My point was that this is more the result of aerobic stimulation, not anaerobic. Blood shunting to vital organs is the goal. The byproducts of anaerobic cellular activity - lactic acid, CO2, potassium - are vasodilators and would counteract the affects we are going for. In other words, these vasodilators would open up the large muscle arteries if anaerobic activity were occurring. I think it also must be considered that these byproducts are produced during regular, basal matabolosm, not only in anaerobic activity.

Again, I think the metabolism is more complicated and intertwined than just black and white. I only offered my original findings to show that when I was lean and aerobically fit, I could hold my breath for a long time. When I was lean and anaerobically fit, I couldn't. This speaks loud to me, but of course there could always be confounders. It would take many years to repeat this experiment, and I'm not volunteering to do it again, ha.
Dr.P is offline   Reply With Quote
Old 12-02-2016, 11:25 AM   #63
growingupninja
Lance
 
growingupninja's Avatar
 
Join Date: Mar 2011
Location: Los Angeles
Posts: 1,334
Re: How long can you hold your breath?

Quote:
Originally Posted by Dr.P View Post
...great point, and it actually was my original argument. My point was that this is more the result of aerobic stimulation, not anaerobic. Blood shunting to vital organs is the goal. The byproducts of anaerobic cellular activity - lactic acid, CO2, potassium - are vasodilators and would counteract the affects we are going for. In other words, these vasodilators would open up the large muscle arteries if anaerobic activity were occurring. I think it also must be considered that these byproducts are produced during regular, basal matabolosm, not only in anaerobic activity.

Again, I think the metabolism is more complicated and intertwined than just black and white. I only offered my original findings to show that when I was lean and aerobically fit, I could hold my breath for a long time. When I was lean and anaerobically fit, I couldn't. This speaks loud to me, but of course there could always be confounders. It would take many years to repeat this experiment, and I'm not volunteering to do it again, ha.
I see what you are saying about various anaerobic byproducts being vasodilators (although I thought CO2 is only a vasodilator in the brain--good for keeping us conscious when we are hypoxic--but not in the muscles?) but I think there is a piece of the puzzle missing, since we know during anaerobic portions of a dive our extremities are most certainly getting less blood. During depth there is evidence that pressure plays a role but for many of us it happens during static's and dynamics.

In your specific case it sounds like you went a bit towards the 'anaerobic extreme'... really yoked guys don't typically do well with breath hold. If during muscle and strength building a certain amount of apnea is included in training it isn't as bad for them but nearly all the top static specialists are a bit on the clothes hanger with lungs side; large muscles are metabolically expensive. If they are trained and adapted to support a specific type of necessary workload under apnea then that metabolic expense may be worth it, but any muscle mass outside of that tends to be dead weight. There also seems to be a good deal of individuality there, I know some great DYN swimmers who do their best when they have starved for weeks and others do better when they train for some power and have more muscle mass than general population.

Anyway thanks for sharing.

Sent from my SM-G930T using Tapatalk
__________________
YouTube channel: SoCal Spear-It
https://www.youtube.com/channel/UCme...kaUpPMG4NX1rKg
growingupninja is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 11:24 PM.


The World's Largest Spearfishing Diving Social Media Forum Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright ©2002 - 2014 Spearboard.com