Center of pressure (CoP) displacement characteristics before take-off. A. CoP backward excursion before the SLJ take-off for the various distances. B. Representative CoP backward excursions of one parkour expert and one parkour beginner. The black circles delimit the ellipse of CoP excursion in the normal stance before take-off. Arrows indicate the direction of the CoP excursion. ^*, ^***: significant difference between the several conditions, at P < 0.05 and P < 0.001, respectively. ###: significant inter-group differences with P < 0.001.