Table 2.
Participant characteristics for exercise groups.
| PIB sample | CSF sample | |||
|---|---|---|---|---|
| Exerciser | Non-exerciser | Exerciser | Non-exerciser | |
| N | 11 | 43 | 10 | 46 |
| Mean age (SD), years | 68 (10) | 71 (10) | 64 (7) | 67 (9) |
| Gender (F/M) | 6/5 | 34/9 | 6/4 | 37/9 |
| Mean education (SD), years | 17 (2) | 16 (4) | 16 (3) | 16 (4) |
| BMI (normal/overweight/obesity) | 4/6/1 | 16/19/8 | 4/5/1 | 16/17/13 |
| Diabetes (-/+) | 11/0 | 41/2 | 10/0 | 43/3 |
| Hypertension (-/+) | 7/4 | 24/19 | 8/2 | 23/23 |
| Heart problems (-/+) | 10/1 | 32/11 | 9/1 | 33/13 |
| Depression (-/+) | 11/0 | 41/2 | 10/0 | 44/2 |
| APOE ε4 (-/+) | 10/1 | 28/15 | 8/2 | 27/19 |
| Mean MCBP (SD) | .02 (.03) | +.10 (.16)** | -- | -- |
| Mean Aβ42 (SD), pg/mL | -- | -- | 739 (217) | +600 (185)* |
| Mean Tau (SD), pg/mL | -- | -- | 263 (58) | 282 (152) |
| Ptau181 (SD), pg/mL | -- | -- | 49 (13) | 54 (25) |
*
p < .05;
**
p<.01.
+
Data with one outlier removed (see text for details).
Note: BMI=Body Mass Index. Exercise groups are based on the American Heart Association's recommended exercise levels (see text for details).