Table 2.
Baseline Demographic Characteristics
| Characteristic | Aerobic Exercise + Cognitive Training, n=24 | Aerobic Exercise + Educational DVD, n=15 | Stretching + Cognitive Training, n=16 | Stretching + Educational DVD, n=17 | P-Value |
|---|---|---|---|---|---|
| Age, mean±SD | 75±6.1 | 71.2±6.2 | 71.9±5.2 | 74.3±6.3 | .18 |
| Female, % | 54 | 73 | 50 | 76 | .27 |
| Education, years, mean±SD | 16.9±1.9 | 15.2±3.3 | 17±2.1 | 16±2.1 | .61 |
| Non-Hispanic white, % | 71 | 60 | 81 | 65 | .60 |
| Modified Mini-Mental State Examination score, mean±SD | 93.8±5.9 | 94.9±5.6 | 94±4.5 | 94.2±4.8 | .94 |
| Geriatric Depression Scale score, mean±SD | 2.4±1.3 | 2.1±1.9 | 1.7±1.4 | 2.5±2.5 | .57 |
| Medical history, % | |||||
| Hypertension | 67 | 60 | 25 | 47 | .60 |
| Diabetes mellitus | 13 | 13 | 6 | 6 | .82 |
| Heart attack | 8 | 13 | 6 | 0 | .51 |
| Bypass surgery | 13 | 0 | 6 | 0 | .25 |
| Smoking history | 50 | 53 | 50 | 59 | .95 |
| Sleep quality, mean±SD (maximum 28) | 11.3±4 | 13.3±4.1 | 11.6±3.3 | 12.3±3.7 | .46 |
There were no significant group differences in baseline demographics. P-values based on analysis of variance for continuous variables and chi-square for categorical variables, with Fisher exact test used if any cell size was less than 5.
SD=standard deviation.