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Objective: To compare two breathing exercises (Buteyko and pranayama) with a control group in patients with asthma. Design: Randomized controlled trial. Subjects: One hundred and twenty subjects were randomized to three groups through block randomization. Subjects with an Asthma Quality of Life Questionnaire score <5.5 participated in the study. Setting: Outpatient pulmonary medicine department. Interventions: Subjects in the Buteyko and pranayama groups were trained for 3–5 days and instructed to practise the exercises for 15 minutes twice daily, and for three months duration. The control group underwent routine pharmacological management during the study period. Outcome measures: Asthma Quality of Life Questionnaire, Asthma Control Questionnaire and pulmonary function test.Results: The baseline characteristics were similar in all three groups. Post intervention, the Buteyko group showed better trends of improvement (mean (95% confidence interval), P-value) in total Asthma Quality of Life Questionnaire score than the pranayama (0.47 (–0.008–0.95), P = 0.056) and control groups (0.97 (0.48–1.46), P = 0.0001). In comparison between the pranayama and control groups, pranayama showed significant improvement (0.50 (0.01–0.98), P = 0.042) in total Asthma Quality of Life Questionnaire score.
Conclusion: The Buteyko group showed better trends of improvement in quality of life and asthma control than the group performing the pranayama breathing exercise.
The aim of this systematic review was to determine if diaphragmatic breathing exercise improves quality of life (QoL) in asthma. Electronic databases were searched for randomized controlled trials (RCTs). Data were extracted and risk of bias was assessed by two independent reviewers. Three RCTs were eligible for inclusion (254 subjects). Two studies compared diaphragmatic breathing exercise to asthma education, and one compared with asthma medication. Meta-analysis was not possible due to clinical heterogeneity of the studies. All three studies had a low risk of bias. All studies reported short-term effects, and long-term effects of breathing exercise on asthma quality life. There is a moderate evidence of improvement in QoL following diaphragmatic breathing both in short-term and long-term basis.