Kathy Dooley: Intrinsic vs Extrinsic Core Muscles

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What is the difference between extrinsic and intrinsic core muscles? Kathy Dooley creatively demonstrates the functional anatomy for you using body painting.

I didn’t mention anything about this muscle attaching to the deep layers of thoracolumbar fascia. Dr. Anna mentioned the internal abdominal oblique and transversus abdominis attaching to that. Never do I say the external does that, because it does not. It is an extrinsic core muscle, not intrinsic.

What did Dr. Anna tell you was the difference between an extrinsic core muscle and an intrinsic core muscle? What is the difference?

Because that’s a hot button topic, this core stuff.

Intrinsic muscles help you to build intra-abdominal pressure the best, but they are more tonic than phasic, meaning they tend toward being more of a stability muscle than permitting a lot of mobility.

The external abdominal oblique has the word “external” in it, because he’s extrinsic, meaning he doesn’t help build these forces well, but he does help take the force you build and send it to the outside world.

Need more ‘hands-on’ anatomy with Kathy Dooley?
This video was a sample from Immaculate Dissection:
Functional Anatomy Featuring Body Painting.
[Click for more preview clips.]

Anna Folckomer

Clinician Anna Folckomer was a classically training modern dancer, who after suffering injuries that halted her dancing career, is now a full-time acupuncturist and herbalist practicing in Manhattan. As part of the team of Immaculate Dissection, she regularly travels to lecture on anatomy and corrective exercise.

Danny Quirk

Danny Quirk is a medical illustrator who works in traditional media for anatomy and clinical books, who in recent years has brought his skills to painting anatomy onto human bodies for his Immaculate Dissection teammates to use as lecture tools. He also drew the illustrations found in the Immaculate Dissection manuals, and has been featured in mainstream magazines and video media.

Kathy Dooley

Kathy Dooley is a rehabilitative chiropractor and co-founder of Catalyst SPORT in NYC. She's an adjunct anatomy professor at two New York City medical schools, Einstein College of Medicine and Weill Cornell Medical College, an adjunct professor at New York University College of Dentistry and Sophie Davis School of Biological Sciences and is a visiting professor for Saint George’s University Medical School in Grenada, West Indies. Kathy is also lead instructor for two different seminar series: NeuroKinetic Therapy (NKT), and Immaculate Dissection, an anatomy and palpation seminar which she co-founded. She is certified as an SFG kettlebell instructor and RKC kettlebell instructor.

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Kathy Dooley: Intrinsic vs Extrinsic Core Muscles

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