Figure 1
HbO 2 levels (mean±SE are shown) responded with a graded response to task complexity. Compared to quiet standing, the highest increase was observed in the walking+S7 condition, a moderate increase in the walking and counting condition, and the lowest increase in the usual-walking (A). Differences were observed in HbO2 response between DT conditions in standing and walking (B) and between simple counting task in walking and standing (C). P values represent the post-hoc analysis between conditions.