Tai Chi (n=15) Control (n=6)
  Pre Post Pre Post
Executive Function Measures
Trails-A (sec) 52.3 (37.8) 40.8 (13.3) 38.5 (7.9) 38.3 (10.6)
Trails-B (sec) 123.5 (46.8) 108.1 (49.0) 91.8 (23.1) 84.0 (19.1)
Letter Verbal Fluency 31.5 (15.3) 33.9 (11.2) 36.2 (9.6) 34.8 (9.5)
Category Verbal Fluency 16.3 (6.5) 18.1 (7.1) 15.8 (4.6) 15.3 (6.1)
Stroop Color Word 31.3 (9.5) 35.1 (12.8) 34.3 (3.8) 35.2 (5.2)
Digits Backwards 5 (2) 6 (3) 7 (2) 7 (2)
Parkinson's Disease Questionnaire 39
Total 31.4 (20.4) 32.5 (19.4) 29.0 (28.4) 38.0 (30.6)
Sub score                
Mobility 18.8 (19.3) 21.0 (20.4) 19.6 (26.8) 22.9 (29.6)
Activities of Daily Living 27.2 (23.1) 22.2 (18.9) 20.8 (24.2) 24.3 (28.3)
Emotional Wellbeing 15.8 (15.7) 13.9 (16.0) 16.7 (15.8) 27.8 (25.6)
Stigma 17.1 (20.7) 17.1 (21.7) 8.3 (9.4) 9.4 (8.6)
Social interaction 5.6 (10.3) 10.6 (12.8) 12.5 (20.9) 12.5 (20.9)
Cognition 20.8 (14.3) 27.1 (17.9) 22.9 (12.9) 32.3 (17.9)
Communication 25.0 (19.9) 23.3 (21.6) 18.1 (19.3) 29.2 (14.7)
Bodily discomfort 31.7 (19.0) 35.6 (19.8) 29.2 (22.2) 38.9 (25.6)
Falls Efficacy Scale 29.7 (21.7) 23.9 (17.9) 21.7 (22.3) 26.5 (26.7)
Table 2: Pre and post intervention comparison of dependent variables in respective groups.