Yoga for breast cancer patients and survivors: a systematic review and meta-analysis

BMC Cancer

Research Article

Petra Klose¹  Silke Lange¹  Anna Paul¹  Gustav Dobos¹  Holger Cramer¹ 

[1] Chair of Complementary and Integrative Medicine, University of Duisburg-Essen, Knappschafts-Krankenhaus, Am Deimelsberg 34a, 45276, Essen, Germany;

关键词: Breast neoplasms;    Yoga;    Complementary therapies;    Quality of life;    Psychological health;    Meta-analysis;    Review;   

DOI  :  10.1186/1471-2407-12-412

 received in 2012-03-09, accepted in 2012-09-12,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundMany breast cancer patients and survivors use yoga to cope with their disease. The aim of this review was to systematically assess and meta-analyze the evidence for effects of yoga on health-related quality of life and psychological health in breast cancer patients and survivors.MethodsMEDLINE, PsycInfo, EMBASE, CAMBASE, and the Cochrane Library were screened through February 2012. Randomized controlled trials (RCTs) comparing yoga to controls were analyzed when they assessed health-related quality of life or psychological health in breast cancer patients or survivors. Risk of bias was assessed using the Cochrane risk of bias tool. Standardized mean differences (SMD) and 95% confidence intervals (CI) were calculated.ResultsTwelve RCTs with a total of 742 participants were included. Seven RCTs compared yoga to no treatment; 3 RCTs compared yoga to supportive therapy; 1 RCT compared yoga to health education; and 1 RCT compared a combination of physiotherapy and yoga to physiotherapy alone. Evidence was found for short-term effects on global health-related quality of life (SMD = 0.62 [95% CI: 0.04 to 1.21]; P = 0.04), functional (SMD = 0.30 [95% CI: 0.03 to 0.57), social (SMD = 0.29 [95% CI: 0.08 to 0.50]; P < 0.01), and spiritual well-being (SMD = 0.41 [95% CI: 0.08; 0.74]; P = 0.01). These effects were, however, only present in studies with unclear or high risk of selection bias. Short-term effects on psychological health also were found: anxiety (SMD = −1.51 [95% CI: -2.47; -0.55]; P < 0.01), depression (SMD = −1.59 [95% CI: -2.68 to −0.51]; P < 0.01), perceived stress (SMD = −1.14 [95% CI:-2.16; -0.12]; P = 0.03), and psychological distress (SMD = −0.86 [95% CI:-1.50; -0.22]; P < 0.01). Subgroup analyses revealed evidence of efficacy only for yoga during active cancer treatment but not after completion of active treatment.ConclusionsThis systematic review found evidence for short-term effects of yoga in improving psychological health in breast cancer patients. The short-term effects on health-related quality of life could not be clearly distinguished from bias. Yoga can be recommended as an intervention to improve psychological health during breast cancer treatment.

【 授权许可】

CC BY   
© Cramer et al.; licensee BioMed Central Ltd. 2012