Mean change of the maximum velocity of the outflow as a function of the dynamical phase for non-AGNs, using isolated discs (i.e., class 0) as reference. Coloured dots correspond to the observed mean values for individual galaxies in interacting systems (1.1, blue), global interacting systems (1.0, cyan), and mergers (2, magenta). Black dots correspond to the predicted change in Vmax due to the mean SFR derived from the infrared luminosity (open dots) and Hα (solid dots), according to the relations found in 4.1.2. The plot shows that the observed change across the different classes is compatible with the expected change due to SFR. The points have been slightly shifted horizontally in order to avoid overlap.