Table 2. Pearson’s correlation coefficients between measured variables. Variable MMSE Age -.212 ** Sex -.187 ** Education .559 ** GDS -.199 ** Body mass index -.138 ** Body fat -.249 ** Vitamin D .250 ** Comorbidity index .082 Arm curl .257 ** Chair stand up for 30 s .152 ** Back scratch .224 ** Chair-sit-and-reach .262 ** Eight-foot-up-and-go -.443 ** The 6-min walk .255 ** MMSE: mini-mental state examination; GDS: geriatric depression scale; SFT: senior fitness test. *p<0.05; **p<0.01; p<0.001*** using Pearson correlation analyses.