Table 5.
Results of permuted, mixed-design ANOVAs testing the effects of timepoint, group and age group on salivary alpha amylase (A) and cortisol (B) levels
| Effect | df | F | η2p | Parametric p | Permutation p |
|---|---|---|---|---|---|
|
| |||||
| A. Salivary alpha amylase | |||||
|
| |||||
| Group | 1, 102 | 0.01 | <.001 | .909 | .906 |
| Age group | 1, 102 | 31.03 | .233 | <.001 | <.001 |
| Group × Age group | 1, 102 | 0.09 | .001 | .766 | .769 |
| Timepoint | 1, 102 | 4.84 | .045 | .030 | .029 |
| Timepoint × Group | 1, 102 | 0.21 | .002 | .644 | .648 |
| Timepoint × Age group | 1, 102 | 0.59 | .006 | .445 | .450 |
| Timepoint × Group × Age group | 1, 102 | 0.00 | <.001 | .952 | .953 |
|
| |||||
| B. Salivary cortisol | |||||
|
| |||||
| Group | 1, 102 | 1.82 | .018 | .180 | .178 |
| Age group | 1, 102 | 27.09 | .210 | <.001 | <.001 |
| Group × Age group | 1, 102 | 0.80 | .008 | .372 | .369 |
| Timepoint | 1, 102 | 3.07 | .029 | .083 | .082 |
| Timepoint × Group | 1, 102 | 0.27 | .003 | .602 | .607 |
| Timepoint × Age group | 1, 102 | 4.93 | .046 | .029 | .025 |
| Timepoint × Group × Age group | 1, 102 | 0.42 | .004 | .517 | .514 |
Note. For (A), salivary alpha amylase levels were assessed at two timepoints: immediately prior to and immediately following the first handgrip run. For (B), salivary cortisol levels were assessed at two points: prior to the initial baseline resting period, and following all handgrip and n-back runs.