Table 3.
Relative change in HbO2 during turning and walking in young, old and Parkinson's participants.
| Task | Time | PFC region | YA Mean (SD) | OA Mean (SD) | PD Mean (SD) | Group p | Period (early vs. late) p | Hemisphere (L vs. R) p | Post-hoc |
|---|---|---|---|---|---|---|---|---|---|
| Turning | Overall | B/L | −0.01 (0.25) | 0.01 (0.30) | 0.06 (0.35) | 0.464 | 0.647 | 0.059 | – |
| L | −0.06 (0.34) | 0.03 (0.30) | 0.05 (0.28) | 0.198 | – | ||||
| R | 0.03 (0.28) | 0.08 (0.33) | 0.09 (0.41) | 0.573 | – | ||||
| Early | B/L | −0.17 (0.19) | 0.04 (0.31) | 0.10 (0.26) | 0.114 | – | |||
| Late | B/L | −0.01 (0.31) | 0.02 (0.41) | 0.05 (0.46) | 0.646 | – | |||
| Walking | Overall | B/L | −0.26 (0.28) | −0.25 (0.36) | −0.03 (0.37) | 0.025* | 0.012* | 0.185 | 0.025* (YA < PD) |
| L | −0.29 (0.32) | −0.21 (0.33) | −0.03 (0.37) | 0.012* | 0.017* (YA < PD) | ||||
| R | −0.21 (0.36) | −0.18 (0.40) | 0.02 (0.49) | 0.065 | – | ||||
| Early | B/L | −0.18 (0.30) | −0.14 (0.32) | 0.07 (0.29) | 0.007* |
0.008*
(YA
<
PD) 0.037*(OA < PD) |
|||
| Late | B/L | −0.29 (0.37) | −0.25 (0.43) | −0.10 (0.44) | 0.136 | – |
*
Significance p < 0.05 should be in bold. PFC, pre-frontal cortex; YA, young adults; OA, older adults; PD, Parkinson's disease; B/L, bilateral; L, left; R, right.