Primary Outcome
In alignment with our design, a planned marginal analysis to test different orders of interactions was employed. Compared with control (arm 5) and regardless of the addition of cognitive training or vitamin D, ADAS-Cog-13 scores improved significantly in participants that received the exercise regime (arms 1 through 4: mean difference, 1.79 points; 95% CI, −3.27 to −0.31 points; 