George,
I have an older model - the FreezeFramer (as does Hans & others). When I first got it, over 4 years ago, I was in chronic afib 24/7. I had no luck using it to convert to NSR. Subsequently I've used it as a pulse monitor though I prefer my Polar as with the FF you are always hooked up to the computer.
Steve Elliott played around a lot with the FF and found the key was a breath rate of around 5.5 breaths per minute. This works out to (amazingly) about 5.5 seconds on inhale and 5.5 seconds on exhale. See: [
www.coherence.com]
There is also a RespErate machine which is a breath monitor & coaches you to breath at < 10 breaths per minute. It has been shown to clinically reduce blood pressure. "By gradually prolonging the exhalation tone to slow your breathing, RESPeRATE leads you to the therapeutic zone of less than 10 breaths per minute." [
www.resperate.com]
[
www.resperate.com]
My own sense is that these benefits are related to increased CO2 in the serum blood - from reduced breathing. Part of the CO2 benefit is related to the "Bohr" effect whereby the bond between oxygen and hemoglobin is weakened as the pH of the blood is lowered. Increased CO2 will do this. This allows the cells to access the oxygen more easily. See: [
en.wikipedia.org] In addition CO2 relaxes smooth muscles.
There are implications for exercise, asthma, insomnia, snoring, apnea among others. Some recent posts on Buteyko breathing go into more detail:
<[
www.afibbers.org];
<[
www.afibbers.org];
[
www.revolutionhealth.com]??
[
www.correctbreathing.com]
[
www.correctbreathing.com]
[
www.correctbreathing.com]
[
www.buteykoclinic.ru]
I recently experienced the relaxation of smooth muscles effect. First, I got a histamine reaction from something I ate. I get these every so often & they normally take an hour or two to completely go away. This time, I exhaled completely & held my breath for 20 or 25 seconds, allowing CO2 to build up. I repeated this several times. In several minutes, I had reduced the reaction by 95%. Several days later, I got the hiccups while eating. I did the exhale & hold breath trick again. The hiccups ceased immediately.
On the side of overbreathing. I used to see how fast I could jump rope - 300 or more rpm - flat out. This could bring on a histamine reaction and mild exercise induced asthma. I now realize I was hyperventilating - & causing the reaction by blowing off too much CO2.
Cheers,
George