Table 3.
Results from ANOVA: Mean (SE)
| Age | Cognitive tasks | Age × Cognitive tasks | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Young | Old | F (1, 88) | p | Baseline | Random Digit Generation | Brooks’ Spatial Memory | Counting Backward | F (3, 88) | p | F (3, 88) | p | ||
| Step time (ms) | Variability | 29.8 (2.1) | 50.5 (3.7) | 22.820 | <0.001* | 45.5 (6.4) | 38.8 (4.0) | 38.7 (4.2) | 37.7 (4.1) | 0.678 | 0.568 | 0.109 | 0.955 |
| Mean | 627.3 (10.6) | 673.9 (17.0) | 5.815 | 0.018* | 597.0 (20.6) | 659.0 (22.5) | 683.8 (17.2) | 662.6 (18.0) | 3.744 | 0.014* | 0.586 | 0.626 | |
| Step length (mm) | Variability | 47.1 (6.5) | 47.0 (5.9) | <0.001 | 0.991 | 45.4 (7.7) | 44.0 (8.2) | 53.3 (10.6) | 45.5 (8.4) | 0.223 | 0.880 | 0.447 | 0.720 |
| Mean | 542.2 (17.7) | 419.1 (29.9) | 12.362 | 0.001* | 458.6 (35.1) | 444.1 (31.4) | 520.9 (46.4) | 498.9 (32.6) | 1.027 | 0.385 | 0.534 | 0.660 | |
| Step width (mm) | Variability | 17.3 (0.7) | 18.3 (0.8) | 1.117 | 0.293 | 15.1 (0.5) | 17.7 (1.1) | 19.1 (1.0) | 19.2 (1.1) | 4.115 | 0.009* | 2.855 | 0.042* |
| Mean | 79.4 (3.9) | 108.7 (8.4) | 10.502 | 0.002* | 77.3 (7.9) | 92.4 (9.6) | 108.3 (10.9) | 98.0 (9.6) | 2.056 | 0.112 | 1.374 | 0.256 | |
*indicates statistical significance.