Fig. 1From: The effects on pain, physical function, and quality of life of quadriceps strengthening exercises combined with Baduanjin qigong in older adults with knee osteoarthritis: a quasi-experimental studyFlowchart of the study participants. QSE: quadriceps strengthening exercise; BDJ: Baduanjin qigong; CE: the combined exercise of quadriceps strengthening exercise and Baduanjin qigongBack to article page