showed a trendp < 0.05
In our feasibility study in a single-arm design (n = 7), a 6-week Qigong exercise program demonstrated an improvement in sleep quality measured by Parkinson’s Disease Sleep Scale-2 (PDSS-2), in which the results showed sub-scores of PDSS-2 were significantly improved or showed a trend of improvement including motor symptoms at night ( p < 0.05) and disturbed sleep ( p = 0.06) in individuals with PD [ 17 ].