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This week in the BMJ:
Didgeridoo playing could improve sleep apnoea
BMJ 2006; 332: 0-a [Full text]
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Rapid Responses published:

[Read Rapid Response] Requesting Details
Earon S. Davis   (27 February 2006)
[Read Rapid Response] circular breathing
james c heady, james c. heady   (18 June 2006)
[Read Rapid Response] Re: circular breathing
Barry Martin, Sean Wolfe aand Barry Martin   (17 February 2007)
[Read Rapid Response] Beyond Didgeridoo and Harmonica for Pulmonary problems
Joseph R. Herr   (10 November 2007)
[Read Rapid Response] Query
Joel S Heller   (17 April 2008)

Requesting Details 27 February 2006
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Earon S. Davis,
Public Health, Massage
Evanston, IL 60201

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Re: Requesting Details

I am interested in knowing whether the study participants each mastered circular breathing for the didgeridoo - or whether they simply mastered and practiced the drone sound. It would be helpful to know whether there was a difference between those who mastered circular breathing, as this might indicate that this type of breath control may have a positive impact on upper airway patency.

I also suggest further study of additional modalities related to diverse practices such as voice training, scuba diving, and pranayama (breath control associated with yoga practices). I respectfully submit that this research is urgently needed, as the treatment failure rates for CPAP are enormous and, in fact, these mechanical devices are not proven to ameliorate the risk factors related to chronic cardiovascular and hypertensive disease.

Respectfully, Earon S. Davis, MPH, CMT massage@earondavis.com

Competing interests: None declared

circular breathing 18 June 2006
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james c heady,
writer
los angeles, california 90027,
james c. heady

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Re: circular breathing

I would also like to know whether the participants mastered circular breathing as I have sleep apnoea and am interested in having it ameliorated.

Competing interests: None declared

Re: circular breathing 17 February 2007
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Barry Martin,
Didgeridoo sales and lessons
L.A.Outback, Los Angeles, CA 91604,
Sean Wolfe aand Barry Martin

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Re: Re: circular breathing

Circular breathing is the key to maintaining the continuous sound of the didgeridoo. The trick is to be able to sniff air while pushing sufficient air out with your cheeks to maintain your drone. Some people apprehend this skill immediately, while others take months or years to “break through.” The things to keep in mind are as follows:

- This is just one of many skills you need to get under your belt. It is possible to be an excellent didge player and not be able to circular breathe. If you find that circular breathing frustrates you, you always have other things to work on between attempts. - Be patient with yourself. - Whenever possible, hang out with other didge players. Sometimes seeing it happen helps it happen.

What’s Happening During Circular Breathing

While droning, the player “saves up” a little air in their cheeks, just before using up all the air in their lungs. Note that CBing is much easier if you DON’T use up all your air, as there’s less strain. Before breathing in through the nose, the back of the tongue is pressed up into the soft palate, creating a seal. Now air is sniffed in. The tongue is now relaxed, and air flow resumes from the lungs and diaphragm into the instrument. The skill is in keeping the pressure even between breathing out through the lungs and breathing out through the cheeks. Changes in pressure will result in changes in intensity or volume of the sound.

Exercises

- Inflate your cheeks, and build up some pressure in your mouth. Pinch your nose if you need to. - With your cheeks inflated, try breathing in and out through your nose. - Here’s one to try at home, in the shower, or over the sink. Get a mouthful of water. While breathing through your nose normally, force a steady stream of water out through your lips. The key is to get a steady stream of water forced out by your cheek muscles, while breathing through your nose. Once your muscles have learned this “contradictory” set of actions, transferring this skill to your didge-playing will be easier. - Now, using a straw and a glass of water about 1/3 full, practice blowing bubbles with cheek pressure, and alternating the source of air, first lungs, then cheeks. Sniff air in while using your cheeks to create a steady stream of bubbles. In this exercise, the purpose is to make the switch between lung and cheek power, and keeping the bubbles coming steadily.

Troubleshooting

If this doesn’t come easily, or if these exercises do not help you, there are a variety of other methods to learn CBing published on any number of Web sites. Videotapes, books, online guides and the like are now in great abundance. As before, it’s also a good idea to seek out other didge players. Having others around who can CB is often very helpful. Finally, be patient. Everyone learns at their own pace.

For media that teaches circular breathing and playing the didgeridoo a good resource (in the U.S.) would be here: http://laoutback.net/music/shop/ videos.html

Competing interests: None declared

Beyond Didgeridoo and Harmonica for Pulmonary problems 10 November 2007
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Joseph R. Herr,
Retired
2109 Granite Drive, Alkamo, CA 94507-1602

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Re: Beyond Didgeridoo and Harmonica for Pulmonary problems

I have been treated surgically for sleep apnea with partial success. I have also been treated surgically for ulcerative colitis. In the mid 1990s I reasoned as follows: It is not the CPAP (Continuous Positive Airway Pressure) increasing the pressure at the nose that makes it work, it is the increase in the pressure difference between the tip of the nose and the interior of the lungs that is important. After performing self devised exercises to strengthen the diaphragm for six months I had a 'gut feeling" that I had not been changing my ostomy appliance as frequently as I had before the exercises. Prior to the exercises (Mostly inhaling and exhaling through pursed lips) I was changing my substitute for a colon 13 to 16 times a month. After about 6 to 9 months of exercising I was changing appliances 5 or 6 times a month.

This lead to the conclusion that by treating sleep apnea, colitis is treated. Search for "Herr j [au] AND (reflux OR ear infection OR PMS OR IBS)" [(premenstrual syndrome) [irritable bowel syndrome)]if you wish more details about the effect on the exercises on sleep apnea etc.

The harmonica has been used in treating COPD (Chronic Obstructive Pulmonary Disorder)

Competing interests: None declared

Query 17 April 2008
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Joel S Heller,
Freelance Philosopher
home 67208

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Re: Query

Are these results likely from any lip-buzzing brass instrument, or is there something peculiar to the digeridoo?

Competing interests: None declared