Table 2.
Group differences in change between intervention and control participants at 12 months. Mean (SD) of change are presented for each group.
| Physical activity group | Control group | Group difference in change | |||
|---|---|---|---|---|---|
| F | p | ω2 | |||
| Change in MRI measures (n) | 34 | 29 | |||
| Right hippocampal volume (mm3) | −192.69 (257.34) | −240.63 (183.27) | 0.70 | 0.405 | −0.005 |
| Left hippocampal volume (mm3) | −99.96 (253.47) | −236.34 (241.86) | 5.12 | 0.027 | 0.061 |
| Cognitive measures | 40 | 30 | |||
| Two-Back Accuracy | 0.39 (7.71) | 6.70 (9.62) | 8.6 | 0.005 | 0.105 |
| Two-Back Reaction Time (ms) | −1.11 (162.2) | −21.53 (172.65) | 0.24 | 0.628 | −0.012 |
| Flanker (interference) | −0.47 (11.01) | 1.01 (10.48) | 0.33 | 0.569 | −0.01 |
| Object Location: identification accuracy (%) | −21 (38) | −27 (43) | 0.7 | 0.403 | 0 |
| Object Location: Location errors | −0.34 (2.04) | −0.75 (2.03) | 0.68 | 0.411 | −0.005 |
| Object Location: Misbinding error | 0.03 (0.13) | <0.01 (0.13) | 1.24 | 0.27 | 0.033 |
| Subjective cognitive complaints (BC-CCI) | −0.25 (3.76) | −1 (4.06) | 0.64 | 0.428 | −0.005 |
Significant between-group differences are highlighted in bold.