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Effect of mindfulness training on asthma quality of life and lung function: a randomised controlled trial [with consumer summary] |
Pbert L, Madison JM, Druker S, Olendzki N, Magner R, Reed G, Allison J, Carmody J |
Thorax 2012 Sep;67(9):769-776 |
clinical trial |
6/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
BACKGROUND: This study evaluated the efficacy of a mindfulness training programme (mindfulness-based stress reduction (MBSR)) in improving asthma-related quality of life and lung function in patients with asthma. METHODS: A randomised controlled trial compared an 8-week MBSR group-based programme (n = 42) with an educational control programme (n = 41) in adults with mild, moderate or severe persistent asthma recruited at a university hospital outpatient primary care and pulmonary care clinic. Primary outcomes were quality of life (Asthma Quality of Life Questionnaire) and lung function (change from baseline in 2-week average morning peak expiratory flow (PEF)). Secondary outcomes were asthma control assessed by 2007 National Institutes of Health/National Heart Lung and Blood Institute guidelines, and stress (Perceived Stress Scale (PSS)). Follow-up assessments were conducted at 10 weeks, 6 and 12 months. RESULTS: At 12 months MBSR resulted in clinically significant improvements from baseline in quality of life (differential change in Asthma Quality of Life Questionnaire score for MBSR versus control 0.66 (95% CI 0.30 to 1.03; p < 0.001)) but not in lung function (morning PEF, PEF variability and forced expiratory volume in 1 s). MBSR also resulted in clinically significant improvements in perceived stress (differential change in PSS score for MBSR versus control -4.5 (95% CI -7.1 to -1.9; p = 0.001)). There was no significant difference (p = 0.301) in percentage of patients in MBSR with well controlled asthma (7.3% at baseline to 19.4%) compared with the control condition (7.5% at baseline to 7.9%). CONCLUSIONS: MBSR produced lasting and clinically significant improvements in asthma-related quality of life and stress in patients with persistent asthma, without improvements in lung function. CLINICAL TRIAL REGISTRATION NUMBER: Asthma and Mindfulness-Based Reduction (MBSR), identifier NCT00682669, ClinicalTrials.gov.
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