Back to the original question that began this thread.
Here is what I think of HIT, or better yet, what I think of training.
First, I think that training, for whatever reason, be it for BBuilding or for sports, HAS to include a certain amount of intensity, which I will define as the amount of effort used above and beyond normal energy expenditures. What I mean is: in order for any positive growth, progression of weight or size or athletic ability, greater than average energy must be used.
As an athletic trainer, I push my athletes to perform at higher levels of intensity so as to gain as much as possible from the workout. I do this in plyos, speed and agility,skills and technique, game sim, and strength training. Why? Because with the higher intensity comes greater gains. It seems self evident.
I have trained many HS and college athletes using, for strength training, HIT. It has produced great results when combined with other speed, agility and plyos. It is also time efficient, as are the athletes whom I train. Further, my training is very fluid and I have used strictly body weight movements and have found great success from those.
As someone who trains himself, I train with higher levels of intensity. I do not go for moderate level intensity cardio. I like what has become known as High Intensity Interval Training. I do this periodically. With respect to lifting, I train with higher levels of intensity. People don’t get bigger or stronger unless they do. When I say “people”, I mean everyone.
I have noticed, when it comes to lifting, that some do great with intense body weight exercises, others do great with weights, some using multiple sets of the same exercise and others doing well with one set per exercise but maybe hitting the same body part with multiple exercises or movements.
Over the past 3 years or so, I have read up on what is known as HIT and have found that, at it’s root, it is a fluid concept. To me, it doesn’t seem to be a dogma, though, I have found, many can be dogmatic. I like it and use it, in it’s very fluid form. Sometimes, I even use it to failure. Other times, I find myself “cheating” on reps.
Of course, there are times and situations where I use multiple sets of the same exercise. Sometimes to failure and, yes, I find myself cheating on some of those reps also.
I find it equally taxing mentally whether doing one set or multiple sets. Part of me wants to just finish because I am getting my butt kicked and am not looking forward to another rep, let alone another set.
So, what do I think of HIT? I always train in a way that is higher in energy output than normal. Sometimes the exertion is higher than others. Sometimes it takes more than one set to get the level of “intensity” that I am looking for; sometimes I go to failure, either in one set or more than one. Other times, I don’t and get just as good a workout.
I like HIT and I use it, though not exclusively, just as I use any method that is effective
Again, my training, and the way I train others is fluid. To ask which way is right is the wrong question (I know that was not the question that was asked here). Nor does it get down to which is best.