Fig. 4

Changes in peripheral circulatory responses, ∆[HbO₂], ∆[HHb], and ∆[Hb_tot] with the difference of gradient degree (0°, 40°, and 80°) for each group (white circle: Tr-AB, white square: UnTr-AB, black trianle: Tr-SCI). Data are mean ± SE. *, ** p < 0.05, 0.01 vs. 0 gradient degree at each group. +, ++ p < 0.05, 0.01 vs. Tr-AB