Among other stupid injuries a year ago I got wrist tendinitis after trying negative and chair-assisted pull ups, and so those things are out of the menu. My road towards pull ups must cross either the Lat Pulldown Machine village, or the Inverted Rows progression. I am doing the latter by means of the adjustable bar of a Smith machine (yes, I know Smith machines are the devil, but I don't use it for squatting).
The Inverted Row progression feels good and seems to be strengthening my back, though I usually see that intermediate gymnastic routines trend to split the exercises, with one day of vertical push & pull (e.g. Pull Ups & Dips) and a second day of horizontal push & pull (e.g. Inverted Rows and Push Ups) thus considering the two exercises different and on an equal basis. That makes me wonder if my Inverted Rows are the right exercises in order to help me do Pull Ups in the future.
The famous book claiming to have been written by a convict says Inverted Rows are the preliminary step to Pull Ups, but I would like to have some other reasonable confirmation.
Remark: Nope, I don't like elastic bands and I have only access to a gym with a nice pulldown machine and a Smith Machine I am using as an adjustable bar to hang from during the Rows. It is either the Pulldown machine or the Inverted Rows.