Is there such a thing as moving Isotonic exercise?

Question

I have come up with exercises where I use the resistance of one arm pressing against the other, but instead of remaining motionless, as in Isotonic exercise, I move the arms in motions that resemble weight training. Is there an actual system of training like this?
I am fifty-one and I don't want to train any harder, or with weights. I can do many of these exercises sitting down while watching TV, which means I am more likely to do them.

I did mean to write Isometric, as in Charles Atlas, and not Isotonic. Its all those years working in a laboratory with isotonic saline thats to blame.
Thanks Dennis R.

Answer 1

isometric exercise is a form of exercise involving the static contraction of a muscle without any visible movement in the angle of the joint. This is reflected in the name; the term "isometric" combines the prefix "iso" (same) with "metric" (distance), meaning that in these exercises the length of the muscle does not change.

It can involve maximal contractions of the muscle against the body's own muscle (e.g., pressing the palms together in front of the body) or against structural items (e.g., pushing against a door frame).

Also added an online book, that will go thorough some of the rotuines for you.

Answer 2

Isotonic exercises have movement...I think you mean isometric exercises, which have no movement. what you are doing is manual resistance isotonic exercises...which physical therapists use everyday.