The effects of different meditation exercises on sleep quality in older people: a network meta-analysis

Chronic sleep loss or sleep disorders is a public health problem affecting older people and cause many health problems. We aim to estimate the effects of different meditation exercises on relieving and improvement of sleep disorders in older people using the pairwise and network meta-analyses.

Randomized controlled trials, which were published in English and reported on meditation exercises for sleep disorders in the older people, were retrieved from PubMed and EMBASE up to May 2018. Publication bias of the included studies were assessed by the Cochrane Collaboration recommendations. Network meta-analysis was performed by ADDIS, and all test models used random-effects model. Pooled effect sizes were presented with weighted mean differences (WMDs) and 95% confidence interval (CI).

A total of ten studies were included in our research. Pairwise comparisons indicated that Qigong could significantly improve the quality of sleep in older people with sleep disorders compared with Activities (WMD = - 4.28, 95% CI - 5.75 to - 2.81). In addition, there were significant differences in Education vs. Usual care (WMD = 2.60, 95% CI 1.03-4.17) and Tai Chi vs. Activities (WMD = - 1.05, 95% CI - 1.73 to - 0.38). With great consistence and convergence, network meta-analysis showed that there was a significant difference in Qigong vs. Activities (WMD = - 4.23, 95% CI - 8.31 to - 0.21). Moreover, Qigong showed a best outcome in relieving sleep disorders, followed by Yoga.

Qigong, Yoga, and Tai Chi improved sleep disorders in the older people, and Qigong intervention had the best effect followed by Yoga. A long-term clinical verification should be needed in the future.