1. Jiaojiao Lü, Lingyan Huang, Xie Wu, Weijie Fu, Yu Liu
Effect of Tai Ji Quan training on self-reported sleep quality in elderly Chinese women with knee osteoarthritis: a randomized controlled trail 
Jiaojiao Lü, Lingyan Huang, Xie Wu, Weijie Fu, Yu Liu 
Sleep Medicine 
Volume 33, Pages (May 2017)
DOI: /j.sleep
Copyright © 2017 Elsevier B.V. Terms and Conditions

2. Fig. 1
Percent change in global Pittsburgh Sleep Quality Index and other outcomes of sleep quality.
Sleep Medicine  , 70-75DOI: ( /j.sleep )
Copyright © 2017 Elsevier B.V. Terms and Conditions