All 6 randomized controlled trials of the Buteyko method for asthma
Med J Aust. 1998 Dec 7-21;169(11-12):575-8.
Buteyko breathing techniques in asthma: a blinded randomised controlled trial.
Bowler SD, Green A, Mitchell CA.
Mater Adult Hospital, South Brisbane, QLD.
OBJECTIVE: To evaluate the effect of Buteyko breathing techniques (BBT) in the management of asthma. DESIGN: Prospective, blinded, randomised study comparing the effect of BBT with control classes in 39 subjects with asthma. The study was conducted from January 1995 to April 1995. PARTICIPANTS AND SETTING: Subjects recruited from the community, aged 12 to 70 years, with asthma and substantial medication use. MAIN OUTCOME MEASURES: Medication use; morning peak expiratory flow (PEF); forced expiratory volume in one second (FEV1); end-tidal (ET) CO2; resting minute volume (MV); and quality of life (QOL) score, measured at three months. RESULTS: No change in daily PEF or FEV1 was noted in either group. At three months, the BBT group had a median reduction in daily beta 2-agonist dose of 904 micrograms (range, 29 micrograms to 3129 micrograms), whereas the control group had a median reduction of 57 micrograms (range, -2343 micrograms to 1143 micrograms) (P = 0.002). Daily inhaled steroid dose fell 49% (range, -100% to 150%) for the BBT group and 0 (range, -82% to +100%) for the control group (P = 0.06). A trend towards greater improvement in QOL score was noted for BBT subjects (P = 0.09). Initial MV was high and similar in both groups; by three months, MV was lower in the BBT group than in the control group (P = 0.004). ET CO2 was low in both groups and did not change with treatment. CONCLUSION: Those practising BBT reduced hyperventilation and their use of beta 2-agonists. A trend toward reduced inhaled steroid use and better quality of life was observed in these patients without objective changes in measures of airway calibre.
N Z Med J. 2003 Dec 12;116(1187):U710.
Buteyko Breathing Technique for asthma: an effective intervention.
McHugh P, Aitcheson F, Duncan B, Houghton F.
Emergency Department, Gisborne Hospital, Gisborne, New Zealand.
AIM: To assess the impact of the Buteyko Breathing Technique (BBT) on medication use in asthma. METHODS: A blinded randomised controlled trial comparing BBT with control was conducted in 38 people with asthma aged between 18 and 70. Participants were followed for six months following the intervention. Medication use and indices of ventilatory function were recorded. RESULTS: No significant change in FEV1 (forced expiratory volume in one second) was recorded in either group. The BBT group exhibited a reduction in inhaled steroid use of 50% and beta2-agonist use of 85% at six months from baseline. In the control group inhaled steroid use was unchanged and beta2-agonist use was reduced by 37% from baseline. Investigator contact between the two groups was equal. There were no adverse events recorded in either group. CONCLUSIONS: BBT is a safe and efficacious asthma management technique. BBT has clinical and potential pharmaco-economic benefits that merit further study.
Thorax. 2003 Aug;58(8):674-9.
Effect of two breathing exercises (Buteyko and pranayama) in asthma: a randomised controlled trial.
Cooper S, Oborne J, Newton S, Harrison V, Thompson Coon J, Lewis S, Tattersfield A.
Division of Respiratory Medicine, City Hospital, Nottingham NG5 1PB, UK.
BACKGROUND: Patients with asthma are interested in the use of breathing exercises but their role is uncertain. The effects of the Buteyko breathing technique, a device which mimics pranayama (a yoga breathing technique), and a dummy pranayama device on bronchial responsiveness and symptoms were compared over 6 months in a parallel group study. METHODS: Ninety patients with asthma taking an inhaled corticosteroid were randomised after a 2 week run in period to Eucapnic Buteyko breathing, use of a Pink City Lung Exerciser (PCLE) to mimic pranayama, or a PCLE placebo device. Subjects practised the techniques at home twice daily for 6 months followed by an optional steroid reduction phase. Primary outcome measures were symptom scores and change in the dose of methacholine provoking a 20% fall in FEV(1) (PD(20)) during the first 6 months. RESULTS: Sixty nine patients (78%) completed the study. There was no significant difference in PD(20) between the three groups at 3 or 6 months. Symptoms remained relatively stable in the PCLE and placebo groups but were reduced in the Buteyko group. Median change in symptom scores at 6 months was 0 (interquartile range -1 to 1) in the placebo group, -1 (-2 to 0.75) in the PCLE group, and -3 (-4 to 0) in the Buteyko group (p=0.003 for difference between groups). Bronchodilator use was reduced in the Buteyko group by two puffs/day at 6 months; there was no change in the other two groups (p=0.005). No difference was seen between the groups in FEV(1), exacerbations, or ability to reduce inhaled corticosteroids. CONCLUSION: The Buteyko breathing technique can improve symptoms and reduce bronchodilator use but does not appear to change bronchial responsiveness or lung function in patients with asthma. No benefit was shown for the Pink City Lung Exerciser.
J Asthma. 2000;37(7):557-64.
A clinical trial of the Buteyko Breathing Technique in asthma as taught by a video.
Opat AJ, Cohen MM, Bailey MJ, Abramson MJ.
Department of Epidemiology and Preventive Medicine, Monash Medical School, Alfred Hospital, Prahan, Vic, Australia.
The Buteyko Breathing Technique (BBT) is promoted as a drug-free asthma therapy. It is based on the premise that raising blood PaCO2 through hypoventilation can treat asthma. Our study was designed to examine whether the Buteyko Breathing Technique, as taught by a video, is an efficacious asthma therapy. Thirty-six adult subjects with mild to moderate asthma were randomized to receive either a BBT or placebo video to watch at home twice per day for 4 weeks. Asthma-related quality of life, peak expiratory flow (PEF), symptoms, and asthma medication intake were assessed both before and after intervention. Our results demonstrated a significant improvement in quality of life among those assigned to the BBT compared with placebo (p = 0.043), as well as a significant reduction in inhaled bronchodilator intake (p = 0.008). We conclude that the BBT may be effective in improving the quality of life and reducing the intake of inhaled reliever medication in patients with asthma. These results warrant further investigation.
Thorax. 2006 Aug;61(8):651-6. Epub 2006 Mar 3.
Double blind randomised controlled trial of two different breathing techniques in the management of asthma.
Slader CA, Reddel HK, Spencer LM, Belousova EG, Armour CL, Bosnic-Anticevich SZ, Thien FC, Jenkins CR.
Faculty of Pharmacy, University of Sydney, New South Wales, Australia 2006.
BACKGROUND: Previous studies have shown that breathing techniques reduce short acting beta(2) agonist use and improve quality of life (QoL) in asthma. The primary aim of this double blind study was to compare the effects of breathing exercises focusing on shallow nasal breathing with those of non-specific upper body exercises on asthma symptoms, QoL, other measures of disease control, and inhaled corticosteroid (ICS) dose. This study also assessed the effect of peak flow monitoring on outcomes in patients using breathing techniques. METHODS: After a 2 week run in period, 57 subjects were randomised to one of two breathing techniques learned from instructional videos. During the following 30 weeks subjects practised their exercises twice daily and as needed for relief of symptoms. After week 16, two successive ICS downtitration steps were attempted. The primary outcome variables were QoL score and daily symptom score at week 12. RESULTS: Overall there were no clinically important differences between the groups in primary or secondary outcomes at weeks 12 or 28. The QoL score remained unchanged (0.7 at baseline v 0.5 at week 28, p = 0.11 both groups combined), as did lung function and airway responsiveness. However, across both groups, reliever use decreased by 86% (p<0.0001) and ICS dose was reduced by 50% (p<0.0001; p>0.10 between groups). Peak flow monitoring did not have a detrimental effect on asthma outcomes. CONCLUSION: Breathing techniques may be useful in the management of patients with mild asthma symptoms who use a reliever frequently, but there is no evidence to favour shallow nasal breathing over non-specific upper body exercises.
Respir Med. 2008 May;102(5):726-32. Epub 2008 Jan 31.
A randomised controlled trial of the Buteyko technique as an adjunct to conventional management of asthma.
Cowie RL, Conley DP, Underwood MF, Reader PG.
Calgary COPD and Asthma Program, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta, Canada T2N 4N1. email@example.com
OBJECTIVE: To assess the effectiveness of a non-pharmacological intervention in patients with asthma on conventional therapy including inhaled corticosteroid. DESIGN: A randomised controlled trial of the Buteyko technique in a group of adults with asthma. The control group was trained by a physiotherapist in breathing and relaxation techniques. SETTING: A single centre associated with a University-based asthma programme. MAIN OUTCOME MEASURE: Asthma control, defined by a composite score based on the Canadian asthma consensus report 6 months after completion of the intervention. RESULTS: Both groups showed substantial and similar improvement and a high proportion with asthma control 6 months after completion of the intervention. In the Buteyko group the proportion with asthma control increased from 40% to 79% and in the control group from 44% to 72%. In addition the Buteyko group had significantly reduced their inhaled corticosteroid therapy compared with the control group (p=0.02). None of the other differences between the groups at 6 months were significant. CONCLUSIONS: Six months after completion of the interventions, a large majority of subjects in each group displayed control of their asthma with the additional benefit of reduction in inhaled corticosteroid use in the Buteyko group. The Buteyko technique, an established and widely recognised intervention, or an intensive programme delivered by a chest physiotherapist appear to provide additional benefit for adult patients with asthma who are being treated with inhaled corticosteroid.
For the review of these results, click here: Asthma treatment.