Table 1.
Participant characteristics
| Demographics | |
| Age (years) | 71 ± 4 (65–83) |
| Sex (count) | 41 Females (62%) |
| Education (years) | 16 ± 3 (10–23) |
| Framingham Risk Score | .17 ± .10 (.03–.37) |
| Household Physical Activity - Phone-FITT Score | 10.67 ± 4.28 (1–20) |
| Recreational Physical Activity - Phone-FITT Score | 9.39 ± 5.40 (0–21) |
| Neuroimaging | |
| Intracranial Volume (cm3) | 1487 ± 171 (1090 – 1862) |
| Whole Brain Volume (cm3) | 1066 ± 111 (799–1311) |
| Gray Matter Volume (cm3) | 569 ± 53 (429–672) |
| White Matter Volume (cm3) | 434 ± 58 (323–584) |
| Cognition | |
| Memory Domain | |
| CVLT - Learning | 49.76 ± 9.58 (29–69) |
| CVLT - Delayed Free Recall | 10.98 ± 3.16 (0–16) |
| Visual Paired Associates - Learning | 12.58 ± 3.59 (5–18) |
| Visual Paired Associates – Delayed Free Recall | 5.53 ± 0.93 (2–6) |
| Verbal Paired Associates - Learning | 17.92 ± 3.14 (10–24) |
| Verbal Paired Associates – Delayed Free Recall | 7.09 ± 1.06 (5–8) |
| Faces – Immediate Recall | 35.53 ± 3.90 (28–45) |
| Attention / Working Memory | |
| Digit Span Forwards | 10.97 ± 2.47 (5–16) |
| Digit Span Backwards | 7.68 ± 2.52 (3–14) |
| Letter – Number Sequencing | 10.62 ± 2.68 (4–17) |
| Arithmetic | 12.67 ± 3.23 (6–19) |
| Mental Control | 25.11 ± 4.95 (15–38) |
| Executive Function | |
| WCST errors | 22.12 ± 12.75 (7–52) |
| Trail Making Test – Version B | 82.82 ± 29.35 (36–173) |
| Phonemic Fluency (FAS) | 43.55 ± 12.40 (23–74) |
| Processing Speed | |
| Digit Symbol Coding | 61.11 ± 12.95 (28–91) |
| Trail Making test – Version A | 36.48 ± 11.71 (19–87) |
Continuous data are presented as mean ± SD (range) and categorical data are presented as count (percentage). Phone-FITT scores are the sum of duration scores for household and recreational categories. Cognitive data are unadjusted mean ± SD (range) raw test scores; CVLT = California Verbal Learning Test; WCST = Wisconsin Card Sorting Test. N = 66