Table II.
DTI measures for pre- and post-intervention
| Walk | Stretch | %diff difference | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Pre | Post | d | %diff | Pre | Post | d | %diff | d | |
| FA | |||||||||
|
| |||||||||
| Frontal | .425 (.03) | .426 (.03) | .03 | .24 (3)† | .434 (.03) | .431 (.04) | −.08 | −.75 (3)† | .33 |
| Parietal | .433 (.03) | .433 (.03) | −.02 | −.13 (3) | .439 (.02) | .436 (.03) | −.13 | −.78 (3) | .22 |
| Temporal | .429 (.02) | .426 (.02) | −.15 | −.84 (2) | .435 (.03) | .434 (.03) | −.03 | −.26 (3) | −.23 |
| Occipital | .655 (.05) | .652 (.05) | −.05 | −.36 (2) | .655 (.06) | .656 (.06) | .02 | .11 (3) | −.18 |
|
| |||||||||
| AD (x102) | |||||||||
|
| |||||||||
| Frontal | .112 (.003) | .112 (.003) | −.04 | .14 (2) | .112 (.003) | .112 (.003) | −.03 | .12 (2) | −.01 |
| Parietal | .120 (.003) | .121 (.004) | −.18 | .55 (2) | .120 (.004) | .121 (.004) | −.06 | .23 (2) | −.16 |
| Temporal | .121 (.004) | .122 (.004) | −.15 | .53 (2) | .122 (.003) | .122 (.003) | .05 | −.10 (2) | −.32 |
| Occipital | .167 (.009) | .168 (.010) | −.08 | .43 (3) | .167 (.010) | .168 (.008) | −.05 | .35 (4) | −.02 |
|
| |||||||||
| RD (x102) | |||||||||
|
| |||||||||
| Frontal | .058 (.004) | .058 (.004) | −.03 | .26 (3) | .057 (.005) | .057 (.005) | −.08 | .74 (3) | .16 |
| Parietal | .061 (.004) | .061 (.005) | −.08 | .59 (4) | .060 (.003) | .061 (.004) | −.14 | .89 (3) | .09 |
| Temporal | .062 (.004) | .063 (.004) | −.17 | 1.16 (3)* | .061 (.004) | .062 (.004) | −.02 | .13 (2)* | −.40 |
| Occipital | .049 (.007) | .049 (.008) | −.10 | 1.67 (7) | .049 (.008) | .049 (.008) | .02 | −.06 (7) | −.25 |
Note. Standard deviations are in parentheses; %diff=((Tpost – Tpre)/ Tpre)*100;
*
p<.05, one-tailed,
†
p<.10 (one-tailed);
d=Cohen’s d effect size calculated from paired t-test, positive sign for greater white matter integrity at post following pre-test; %diff difference d=Cohen’s d effect size comparing the means and standard deviations of %difference estimates for each group, positive sign when difference is in favor of the walking group.