Effectiveness of mind-body exercise via Baduanjin on physical and psychological outcomes in patients with pulmonary ground-glass nodules: A non-randomized controlled pilot study

•Baduanjin is a beneficial and feasible intervention for GGN patients.•Baduanjin positively improves lung function and psychological condition in 16 weeks.•Baduanjin promotes quality of life.•Research data indicate that breathing and emotions are closely related.