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.

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.

7 Courses

Not Enrolled

Course Includes

  • 1 Lesson
  • Course Certificate

Ratings and Reviews

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What's your experience? We'd love to know!
Scott Randall
Posted 10 months ago
So much info, was great

Love the stories, easy to relate too.

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Sean Sullivan
Posted 11 months ago
Great Deep Dive

Really enjoyed consolidating and building further on my understanding of CO2 tolerance from the level 1 course.

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Mathew Thompson
Posted 1 year ago
Awesome

enjoyed the and found the suggestions for positive mental anchors extremely helpful Thanks Joe

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Emma Gibbons
Posted 2 years ago
Really informative!

Great to get a good start on the subject of CO2 tolerance and science behind it before jumping into the Watermanship Course! Thank you!

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Renato Lopes-Silva
Posted 2 years ago
Create positive mental anchors and positive associations with CO2 tolerance.... Focus on your feelings not on your time..

Super important knowlodge to be safe and effective in the water....

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John Mackean
Posted 2 years ago
very informative

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

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Dave Berry
Posted 2 years 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.

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Brian Trello
Posted 2 years ago
Inspired to go further

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

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M S
Posted 2 years ago
Very informative

A brilliant overview and a unique approach to training.

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mat stu
Posted 2 years ago
Very Fun Way of Learning

Thank you that was incredibly interesting.

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