In the entire participant group, the results of multiple linear regression analyses adjusted by age, sex, education (≤12 years or >12 years), presence of diabetes, hypertension, ApoE ε4 carrier, and BMI were as follows (Table 6): (i) results of the odor identification test were significantly associated with TMT-A and tended to be associated with MoCA and QIDS, (ii) IPS was independently associated with all cognitive function tests except for QIDS and SAS, and (iii) knee extension strength was significantly associated with TMT-B and SAS. The gene discussed is APOE; the disease is diabetes mellitus.