Yochanan said:Isometrics, dynamic-tension, or Zen, or whatever you call it, does make for impressive strength gains. If you think about it, armwrestling and wristwrestling are isometric sports for the most part, because arms are locked without movement in most contests. I became VERY strong competing in such tournaments, to the point that my right arm was at least 1" bigger than my left. I have since tried to "even out" the arm sizes, but my right arm is still slightly bigger.
I couldn't do more than 24 chin-ups, even with supplements, before I rediscovered this simple method of exercise. And walla, within a few weeks, I was pumping out 31 chin-ups. Nobody can tell me that isometrics is worthless. I had enough confidence in it to make the technique more versatile by designing a machine for it. And even if nobody else wants it, I'm building a prototype of it for myself.
That being said, I still regard isometrics as an exercise to enhance other exercises. I still race by bike, do chin-ups, dips, push-ups, sit-ups, squats, and other exercises. The isometrics just gives me the extra edge to beat out the competition, the competition being the results from my last workout.
Yochanan
Your last sentence summed it all up. I have never disagreed with that position. I use a lot of static movements in my workouts. As you discovered, it is an excellent way to work through sticking points, among other things. And 31 chinups at any age, especially by your age, is impressive as hell!
I'm not so sure about your machine yet, but I admire your ingenuity.