Fig. 1.

Schematic of experimental sessions. Participants were allocated either to REST or to EXE group and attended three experimental sessions, including session 1 and two sessions, which were one day and seven days after session 1. Session 1 consisted of 2 minutes of baseline walking, 5 minutes of split-belt treadmill walking, and five minutes of either rest or exercise. Lactate was collected immediately before and after this 5-minute rest or exercise bout (see asterisk). On session 2, participants repeated only the 5 minutes of split-belt walking. On session 3, experimental procedures were the same as session 2 with the exception that the duration of the split-belt treadmill walking was 15 minutes. Green solid line and black dashed lines indicate tied-slow and split-belt walking, respectively.