Clinical Trials and Research undertaken into the Buteyko Method and related issues.
Breathing Patterns Source: Chest, 1983, 84:202-205Tobin et al (Summary)
Smokers who had not had a cigarette for three hours and who also had no sign of pulmonary (chest) disorders breathed on average 18.3 times per minute.
People with asthma breathed on average 16 times per minute on average.
Those with COPD and who also had high end-tidal CO2 breathed 20.4 times per minute and those with COPD and low end-tidal CO2 breathed 23.3 times per minute.
Those who had difficulty breathing at rest or on mild exertion with reduced lung capacity breathed on average 27.9 times per minute. Their tidal volume was normal and so their minute volume was raised.
Those with a ôchronic anxiety stateö had an average of 18.3 times per minute. Their breathing however was quite erratic: frequent sighing to a volume three times greater than mean tidal volume, occurred 4 to 15 times in a 15 minute observation period; 8 to 15 second suspension in breathing after they had inhaled; occasional erratic breathing with rapid shallow breathing alternating with apnea and intermittent large sighs.
People with pulmonary hypertension breathed at an average of 21.2 breaths per minute.
Anaemia, seizures, over-active thyroid, diabetic acidosis, liver, heart, renal failure and raised levels of progesterone all increase the breathing pattern without us thinking about it.