The Impact of Yoga on Fatigue in Cancer Survivorship: A Meta-Analysis
A partir d'une revue systématique de la littérature publiée jusqu'en octobre 2018 (29 études ; 1 828 patients), cette méta-analyse évalue les effets du yoga sur l'état de fatigue avant et après une intervention chez des patients atteints d'un cancer
Mind-body approaches, particularly yoga, are used by cancer survivors to cope with treatment-related symptoms. Consistency of yoga-related effects on treatment-related symptoms are not known. This meta-analysis was designed to examine effects of yoga on pre-to-post-intervention improvements in fatigue among cancer patients.PubMed and PsycINFO were searched for peer-reviewed articles of yoga RCTs including cancer survivors and reporting at least one fatigue measure. 29 studies met inclusion criteria (N = 1828 patients). Effect sizes (Hedge’s g) were calculated for fatigue, depression, and quality-of-life (QoL). Patient-related and intervention-related characteristics were tested as moderators of outcomes.Yoga practice was associated with a small, significant decrease in fatigue (g=0.45, p = 0.013). Yoga type was a significant moderator of this relationship (p=0.02). Yoga was associated with a moderate decrease in depression (g=0.72, p = 0.007), but was not associated with significant changes in QoL (p = 0.48). Session length was a significant moderator of the relationship between yoga and depression (p = 0.004). Neither timing of treatment (during- vs. post-treatment) nor clinical characteristics were significant moderators of the effects of yoga on outcomes. The effect of yoga on fatigue and depression was larger when the comparator was a ‘waitlist’ or ‘usual care’, than when the control group was another active treatment (p = 0.036).Results suggest yoga may be beneficial as a component of treatment for both fatigue and depression in cancer survivors.
JNCI Cancer Spectrum 2020