Hey dude, yes I love band work! There is nothing that a band won't make better in my opinion LOL. But now with all the madness going on and my gym being closed I have broken out all of my stuff for home training and band work is going to play a big role. I'm not sure as to scientifically how much tension is kept on the muscles during a movement, but what I can say is that the tension is more constant throughout the entire movement whereas with free weights it is typically more intense at a mid-range point and then dies off either in the up or down position depending on the exercise.