tubing for pull ups
First let me describe my workout room. It is a room that was added onto the house by previous owners. It is a large room with two "doors"--one is a door to the back yard (so that cannot be used for a door pull up station) and the other is French doors leading into the living room--so again, no way to mount a pull up bar (very wide doorway). Also, because it is an add on room, it isn't constructed the same as the rest of the house--the ceilings are lower. Although I own a pull up station, it is in the garage--the ceiling in the workout room is too low. So it doesn't fit in that room. And finally, because the room was added on, we don't feel comfortable mounting a pull up bar to the ceiling.
When I first did P90X, I couldn't do a single pull up anyway, so the matter was moot. Nevertheless, I bought the pull up station and a doorway pull up bar (for when the weather was too hot or cold for the garage, I'd do it in the doorway of another room). My goal was that even though I didn't do traditional pull ups during the P90X workouts, I would work on pull ups in my own time.
So I used the bands during the workouts. I got the heaviest bands Beachbody offered (40 and 50 pounds I think; I started with 40 and was using 50 by the end of the program). I connected them at the top of the French doorway and used those instead of doing pull ups. Personally, I felt that it was a great substitute. They burned out my back/arms when I used them rather than "attempting" to do pull ups. By the time I finished 90 days of P90X I was able to do 2 full pull ups from a regular pull up bar. No, that's not a lot of pull ups, but it was an accomplishment for me!
I will add that P90X also showed another modification for people who do have a pull up bar by the TV but cannot do a full pull up. You have a chair nearby and you rest one (or two) toes/feet on it to take some of the weight.
In addition, there are also straps you can purchase called Pull-up Revolution (
Amazon.com: Lifeline USA Pullup Revolution: Sports & Outdoors) Which seem to me like an excellent way to modify if you have a pull up bar but cannot do a full pull up. In fact, I've been thinking about getting one since I haven't spent time doing pull ups since I finished P90X--so who knows if I can still do one.
After typing all that tho, I am more interested in getting a Turbo Tower and doing the pull up modification that way, since I have never heard of doing one in that manner and it seems like great way to modify--plus the tower is multifunctional!