Based on hundreds of
medical studies, it is possible to suggest that the following effects
take place with the progression of a chronic disease:
- we breathe more air (minute ventilation increases);
- breathing frequency becomes higher;
- breathing becomes deeper (tidal volume increases);
- CO2 content in blood decreases;
- CP becomes shorter;
- body oxygenation decreases;
- heart rate increases, and so forth.
These effects are reflected in the Buteyko Table of Health Zones.
- Pulse* – heart rate in 1 minute (all parameters are measured at rest)
- Respiratory frequency – respiratory rate in one minute (number of inhalations or exhalations in one minute);
- % CO2 – percentage of CO2 in alveoli of the lungs (or arterial blood if there is no ventilation-perfusion mismatch) – Crucial CO2 effects are vasodilation and the Bohr effect
- AP - the Automatic Pause or natural delay in breathing after exhalation (*during unconscious breathing)
- CP - the Control Pause, breath holding time after usual exhalation and until first distress;
- MP - the Maximum Pause, the sum of the CP and WP.
* Note about pulse: Not all people have greatly increased heart rates, as is provided by this table, when parameters are at the bottom of the table or their CPs are low. Some categories of people with less than 20 second CP can have a resting pulse of around 60 - 70. However, increased heart rate for lower CPs is a feature of, for example, heart patients and patients with severe asthma. During the 1960's, when conducting his research, and later, Buteyko and his colleagues applied the Buteyko breathing training program mainly for heart and asthma patients, who were mostly hospitalized with frequent deficiencies in blood cortisol levels.
/ This version of the Table is based on Buteyko KP, The method of volitional elimination of deep breathing [English translation of the Small Buteyko Manual], Voskresensk, 1994.