Definition of "interventionist"

I don't believe in an interventionist God / But I know, darling, that you do / But if I did, I would kneel down and ask Him / Not to intervene when it came to you

1997, “Into My Arms”, in Nick Cave (lyrics), The Boatman’s Call, performed by Nick Cave and the Bad Seeds

Senior players were sceptical to begin with, startled by Conte’s aggressively interventionist training sessions, practice constantly stopped by that barking voice, points of positional detail brutally drilled.

2017 May 13, Barney Ronay, “Antonio Conte’s brilliance has turned Chelsea’s pop-up team into champions”, in the Guardian‎