2.9. Analysis
There was no exclusion or dropout during the study, therefore, all participants who were selected during the screening were entered in the statistical analysis. Statistical analyses were performed using IBM SPSS ver.24, and the differences between the ALA group and CONT group were analyzed by an unpaired t-test. The points of change in cognitive function before and after 6 and 12 weeks of evaluation were calculated. All data are expressed as the means ± standard deviations. Significance is inferred if 