OOI Deep Dive: CO2 Tolerance

Joe Knight · November 8, 2020

Welcome to the One Ocean International Deep Dive on CO2 Tolerance, with Joe Knight. This event was held at 1900 AWST on 15/12/2020.

To access the webinar, enrol via the tab at the right of screen.

Guest Speaker for this session was One Ocean International Founder and Head Trainer, Joe Knight.
It was moderated by Austere Risk Management Director, Nathan Burns.

Discussion Points

  • 00:00: Introduction and Welcome from Joe
  • 05:00: CO2 Tolerance
    • What is it?
    • Why is it fundamental to Watermanship?
    • How does it fit into the 6 Pillars of Watermanship?
    • What role does the Dive Reflex play?
  • 15:00: The Urge to Breathe
    • The role of Oxygen
    • The role of CO2
    • The point of Intersection
  • 25:00: The Role of the CNS in CO2 Tolerance
    • Sympathetic vs. Parasympathetic Systems
    • Innervating the Parasympathetic System
    • Primal Instincts
  • 35:00: Innoculation Training and Passive Apnea
    • Positive Stimulus Exposure
    • The Edge of Discomfort
    • Positive Review and Mental Anchors
  • 45:00: Q&A

About the Guest Speaker

One Ocean International Founder and Head Trainer, Joe Knight.

Joe founded One Ocean International in 2012.

He is a currently registered Apnea Academy Freediving Instructor, professional waterman as well as a medic, nutrition and lifestyle consultant and a renowned trainer and coach specialising in personal development.

Joe found his passion for helping others very early in life through joining the Royal Australian Navy, were he served as a Medic and was discharged honourably with a Maritime Commander Australia Commendation whilst serving in South East Asia.

Joe’s legacy is, “Your success is my success”, which he applies to his various roles as a trainer and coach.

He has trained with some of the best athletes and teams in the world including surfers, cross-fitters, humanitarian disaster teams, windsurfers, swimmers, boxers, ultra marathon runners, freedivers, watermen and waterwoman.

Resources and Links

Carbon dioxide poisoning: A literature review of an often forgotten cause of intoxication in the emergency department. (n.d.). Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/ PMC5380556/

Heart rate changes (HR) and oxygen saturation in blood (SAO2) dependency in relation to the static apnea duration (STA). (n.d.). Retrieved from http://www.eqoljournal.com/wp-content/ uploads/2017/06/EQOL_4_1_f.pdf

Hook breathing facilitates SaO2 recovery after deep dives in Freedivers with slow recovery. (n.d.). Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6729099/

Severe hypoxemia during apnea in humans: influence of cardiovascular responses. (n.d.). Retrieved from https://openarchive.ki.se/xmlui/bitstream/handle/10616/37980/thesis.pdf? sequence=1

Shallow water blackout – StatPearls – NCBI bookshelf. (2020, April 24). Retrieved from https:// www.ncbi.nlm.nih.gov/books/NBK554620/

The ins and outs of breath holding: simple demonstrations of complex respiratory physiology. (n.d.). Retrieved from https://journals.physiology.org/doi/pdf/10.1152/advan.00030.2015

About Instructor

Joe Knight

Joe founded One Ocean International in 2012. He is a currently registered Apnea Academy Freediving Instructor, professional waterman as well as a medic, nutrition, and lifestyle consultant, and a renowned trainer and coach specialising in personal development.

4 Courses

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Course Includes

  • 1 Lesson
  • Course Certificate

Ratings and Reviews

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What's your experience? We'd love to know!
John Mackean
Posted 1 month ago
very informative

Cheers for the info. I look forward to putting some of it into practice. Especially the positive mental anchors.

Dave Berry
Posted 1 month ago
Awesome session

Great work guys, I highly enjoyed it! I got some really good info out the session cheers. Looking forward to the next one.

Brian Trello
Posted 1 month ago
Inspired to go further

Thanks Joe, your talk gave me the inspiration to safely push my limits further with your techniques.

M S
Posted 1 month ago
Very informative

A brilliant overview and a unique approach to training.

mat stu
Posted 1 month ago
Very Fun Way of Learning

Thank you that was incredibly interesting.

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What's your experience? We'd love to know!