Maximum velocities of the red- and blue-shifted absorption features (panels a and c, respectively) observed in the He I λ10830 Å profiles. Panels a and c: scatter plots of the Lupus absorption velocities with circles, and Upper Scorpius velocities with squares. The solid, dashed and dotted lines are the free-fall velocities (panel a) and escape velocities (panel c) for stellar radii R_* = 1, 2, 3 R_⊙, respectively. Panels b and d: histograms of the maximum absorption velocities for both regions in 10 km s⁻¹ velocity bins.