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Active mind‐body movement therapies as an adjunct to or in comparison with pulmonary rehabilitation for people with chronic obstructive pulmonary disease
Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Canada.
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2018 (English)In: Cochrane Database of Systematic Reviews, ISSN 1469-493X, E-ISSN 1469-493X, no 10, article id CD012290Article, review/survey (Refereed) Published
Abstract [en]

Background: Active mind‐body movement therapies (AMBMTs), including but not limited to yoga, tai chi, and qigong, have been applied as exercise modalities for people with chronic obstructive pulmonary disease (COPD). AMBMT strategies have been found to be more effective than usual care; however, whether AMBMT is inferior, equivalent, or superior to pulmonary rehabilitation (PR) in people with COPD remains to be determined.

Objectives: To assess the effects of AMBMTs compared with, or in addition to, PR in the management of COPD.

Search methods: We searched the Cochrane Airways Group Specialised Register of trials and major Chinese databases, as well as trial registries from inception to July 2017. In addition, we searched references of primary studies and review articles. We updated this search in July 2018 but have not yet incorporated these results.

Selection criteria: We included (1) randomised controlled trials (RCTs) comparing AMBMT (i.e. controlled breathing and/or focused meditation/attention interventions for which patients must actively move their joints and muscles for at least four weeks with no minimum intervention frequency) versus PR (any inpatient or outpatient, community‐based or home‐based rehabilitation programme lasting at least four weeks, with no minimum intervention frequency, that included conventional exercise training with or without education or psychological support) and (2) RCTs comparing AMBMT + PR versus PR alone in people with COPD. Two independent review authors screened and selected studies for inclusion.

Data collection and analysis: Two review authors independently selected trials for inclusion, extracted outcome data, and assessed risk of bias. We contacted study authors if necessary to ask them to provide missing data. We calculated mean differences (MDs) using a random‐effects model.

Main results: We included in the meta‐analysis 10 studies with 762 participants across one or more comparisons. The sample size of included studies ranged from 11 to 206 participants. Nine out of 10 studies involving all levels of COPD severity were conducted in China with adults from 55 to 88 years of age, a higher proportion of whom were male (78%). Nine out of 10 studies provided tai chi and/or qigong programmes as AMBMT, and one study provided yoga. Overall, the term 'PR' has been uncritically applied in the vast majority of studies, which limits comparison of AMBMT and PR. For example, eight out of 10 studies considered walking training as equal to PR and used this as conventional exercise training within PR. Overall study quality for main comparisons was moderate to very low mainly owing to imprecision, indirectness (exercise component inconsistent with recommendations), and risk of bias issues. The primary outcomes for our review were quality of life, dyspnoea, and serious adverse events.

When researchers compared AMBMT versus PR alone (mainly unstructured walking training), statistically significant improvements in disease‐specific quality of life (QoL) (St. George's Respiratory Questionnaire (SGRQ) total score) favoured AMBMT: mean difference (MD) ‐5.83, 95% confidence interval (CI) ‐8.75 to ‐2.92; three trials; 249 participants; low‐quality evidence. The common effect size, but not the 95% CI around the pooled treatment effect, exceeded the minimal clinically important difference (MCID) of minus four. The COPD Assessment Test (CAT) also revealed statistically significant improvements favouring AMBMT over PR, with scores exceeding the MCID of three, with an MD of 6.58 units (95% CI ‐9.16 to – 4.00 units; one trial; 74 participants; low‐quality evidence). Results show no between‐group differences with regard to dyspnoea measured by the modified Medical Research Council Scale (MD 0.00 units, 95% CI ‐0.37 to 0.37; two trials; 127 participants; low‐quality evidence), the Borg Scale (MD 0.44 units, 95% CI ‐0.88 to 0.00; one trial; 139 participants; low‐quality evidence), or the Chronic Respiratory Questionnaire (CRQ) Dyspnoea Scale (MD ‐0.21, 95% CI ‐2.81 to 2.38; one trial; 11 participants; low‐quality evidence). Comparisons of AMBMT versus PR alone did not include assessments of generic quality of life, adverse events, limb muscle function, exacerbations, or adherence.

Comparisons of AMBMT added to PR versus PR alone (mainly unstructured walking training) revealed significant improvements in generic QoL as measured by Short Form (SF)‐36 for both the SF‐36 general health summary score (MD 5.42, 95% CI 3.82 to 7.02; one trial; 80 participants; very low‐quality evidence) and the SF‐36 mental health summary score (MD 3.29, 95% CI 1.45 to 4.95; one trial; 80 participants; very low‐quality evidence). With regard to disease‐specific QoL, investigators noted no significant improvement with addition of AMBMT to PR versus PR alone (SGRQ total score: MD ‐2.57, 95% CI ‐7.76 to 2.62 units; one trial; 192 participants; moderate‐quality evidence; CRQ Dyspnoea Scale score: MD 0.04, 95% CI ‐2.18 to 2.26 units; one trial; 80 participants; very low‐quality evidence). Comparisons of AMBMT + PR versus PR alone did not include assessments of dyspnoea, adverse events, limb muscle function, exacerbations, or adherence.

Authors' conclusions: Given the quality of available evidence, the effects of AMBMT versus PR or of AMBMT added to PR versus PR alone in people with stable COPD remain inconclusive. Evidence of low quality suggests better disease‐specific QoL with AMBMT versus PR in people with stable COPD, and evidence of very low quality suggests no differences in dyspnoea between AMBMT and PR. Evidence of moderate quality shows that AMBMT added to PR does not result in improved disease‐specific QoL, and evidence of very low quality suggests that AMBMT added to PR may lead to better generic QoL versus PR alone. Future studies with adequate descriptions of conventional exercise training (i.e. information on duration, intensity, and progression) delivered by trained professionals with a comprehensive understanding of respiratory physiology, exercise science, and the pathology of COPD are needed before definitive conclusions can be drawn regarding treatment outcomes with AMBMT versus PR or AMBMT added to PR versus PR alone for patients with COPD.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. no 10, article id CD012290
National Category
Physiotherapy
Identifiers
URN: urn:nbn:se:umu:diva-154717DOI: 10.1002/14651858.CD012290.pub2ISI: 000449049600027PubMedID: 30306545OAI: oai:DiVA.org:umu-154717DiVA, id: diva2:1274070
Note

En tidigare version av artikeln finns också publicerad. DOI: 10.1002/14651858.CD012290. DiVA: http://umu.diva-portal.org/smash/record.jsf?pid=diva2:950257.

A previous version of this paper has also been published. DOI: 10.1002/14651858.CD012290. DiVA: http://umu.diva-portal.org/smash/record.jsf?pid=diva2:950257.

Available from: 2018-12-27 Created: 2018-12-27 Last updated: 2019-01-03Bibliographically approved

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