Fig. 6: Task and procedure.

A Participants were presented with the words ”left” and ”right” in their left and right ear. The task required to respond to the content of the word by pressing a button with their right or left thumb while ignoring the stimulus spatial location. Stimulus content and spatial location could be either congruent or incongruent. B Example of trial structure. C The session started with a seated 10 min resting state. After that, participants mounted on the bike and warmed up for 5 min, during which a 30 s practice block was presented. Then, the experimental task was presented for 30 min during which participants had to pedal without stopping. In the low-intensity condition, the resistance of the bike was set at 10% of the maximum W that the participant had moved in the effort test. In the high-intensity condition, the resistance was set at 80%. The session ended with a seated 10 min resting state. Note that in this paper resting state data are not analysed.