I am most glad to see people trying this method. Thank you very much for the intelligent discussion gentlemen...
In the meantime, here is a little update for you about my own training: In order to see where my own training stands I decided to do one or two exclusive non-ACIT session for each of the muscle groups. When I tried to lift the old weight for chest presses (I use a machine for this) I got the exact same number of reps with 240 lbs as I had during my last non-ACIT session, but I am sure I would have gotten 1 or more likely 2 more reps if I had not messed up. After having trained ACIT style for over 3 months (longer for some muscles and shorter for others), I simply ended up squeezing the muscle too much even though I did not intend to do so. Also I stopped several inches short of lock-up on top, making the exercise harder. Before ACIT, I used to almost go to lock-out on top and during the last few reps I would momentarily lock out and take a very short rest. Next week, I will try again and am fairly confident that i will get out more reps than I used to before ACIT. So to make a long story short, it looks like my strength did go up as a result of ACIT. This will also help me test another hypothesis: does a slight ACIT deconditioning help to reignite gains when one switched back to ACIT?
As much as I am against the idea of deconditioning as it is applied in most contexts, I think it can be a useful thing when the deconditioning period for one pathway is used productively to "conditon" for another pathway. IOW, to me it looks like both ACIT and heavy conventional sets activate growth and they do so through slightly different pathways. After having exhausted short-term gains with one method, one can switch to another to milk benefits from the other pathway and then switch back again to the original method. In that sense, ACIT does not have to be the primary lifting style of the individual and can be used temporarily while taking a break from other methods. Hence, having two methods to switch back and forth with can make any deconditioning period from one method highly productive. Instead of "deconditioning" yourself from heavier weihts by simply lifting light, why not ACIT for a few weeks before you eturn to heavy weights?
Here is another observation:When I do one set of chest presses ACIT style, I am pretty weak in the chest and can decline press 185 for only 7 reps. This time, after one set of regular chest presses on the same machine, I was able to decline press 190 for 9 reps. So ACIT is definitely working the muscle differently. However, believe it or not, I feel less tired after an ACIT set despite the fact that my muscles are more exhausted...
Will keep letting you know
Hunkar